Moxa Technologies Computer Hardware C168HS User Manual

Smartio C168H/HS User’s Manual  
Universal 8 Port Serial Board  
May 1999 (6th Edition)  
The content of this manual is also available in CD-ROM and at Moxa Web Site.  
Moxa Technologies Co., Ltd.  
Tel:  
+866-2-8665-6373  
+886-2-8665-6372  
Fax:  
www.moxa.com  
MOXA Internet Services  
Customer’s satisfaction is always our number one concern. To ensure that customers get the full benefit  
of our services, Moxa Internet Services have been built for technical support, product inquiry, new driver  
update, user’s manual update, etc.  
The followings are the services we provide.  
E-mail for technical support  
address:  
FTP site for free driver update  
address:  
user ID:  
ftp.moxa.com  
or  
ftp.moxa.com.tw  
ftp  
password: your_email_address  
World Wide Web (WWW) Site for product info  
address:  
www.moxa.com  
or  
www.moxa.com.tw  
About This Manual  
This manual is composed of six Chapters and one Appendix. This manual is written for installer, system  
administrator and software programmer.  
If you are a first-time installer and system administrator, we recommend you to go through the whole  
manual except Chapter 4.  
If you are a software programmer, you may refer to Chapter 4 “Serial Programming Tools”.  
If you need cable wiring information, please see Chapter “Connection Option (Opt8x) and Cable  
Wiring”.  
If you encounter any problem during installation, please refer to Chapter “Troubleshooting”.  
+ In this manual, C168 Series refers to C168H and C168HS.  
Chapter 1 Introduction  
Overview and features of the Smartio C168 Series boards, list of items and overall installation guide.  
Chapter 2 Hardware Installation  
Hardware installation for the Smartio C168 Series boards and connection option (Opt8x) is detailed.  
Chapter 3 Software Installation  
This Chapter details the software installation, configuration, driver loading/unloading, driver  
upgrade and removal for various operating systems: Windows NT, Windows 95/98 , UNIX, DOS.  
Chapter 4 Serial Programming Tools  
This Chapter roughly describes the programming tools for various O.S. platforms, including PComm  
under Windows NT, Windows 95/98, API-232 under DOS and standard UNIX system calls. Also  
RS-485 programming issue is covered (for Opt8J).  
Chapter 5 Connection Option (Opt8x) and Cable Wiring  
This Chapter describes the RS-232/422/485 cable wiring for each connection option (Opt8x).  
Chapter 6 Troubleshooting  
This Chapter describes the problems and possible answers for Smartio C168 Series boards.  
Appendix Technical Reference  
Specification details, UART, I/O port address map, and DB62 pinouts are described.  
Table of Contents  
Introduction..................................................................... 1-1  
Overview................................................................................................................ 1-1  
Features................................................................................................................. 1-4  
Check List.............................................................................................................. 1-5  
Installation Guide...................................................................................................1-8  
Hardware Installation ...................................................... 2-1  
Default Settings .....................................................................................................2-1  
Quick Hardware Installation................................................................................... 2-2  
How to Do Quick Hardware Installation................................ ................................ .......... 2-2  
Hardware Installation with IO-IRQ Utility................................................................ 2-3  
IO-IRQ Utility and Hardware Configuration................................ ................................ ....2-4  
Software Installation ....................................................... 3-1  
Windows NT .......................................................................................................... 3-1  
Installing Driver ................................ ................................ ................................ ............. 3-2  
Configuring Board and Port................................ ................................ ........................... 3-7  
Updating Driver ................................ ................................ ................................ ............. 3-9  
Removing Driver ................................ ................................ ................................ ........... 3-9  
Windows 95/98 ......................................................................................................3-9  
Installing Driver ................................ ................................ ................................ ........... 3-10  
Configuring Board and Port................................ ................................ ......................... 3-14  
Updating Driver ................................ ................................ ................................ ........... 3-15  
Removing Driver ................................ ................................ ................................ ......... 3-16  
DOS..................................................................................................................... 3-17  
Installing Driver ................................ ................................ ................................ ........... 3-17  
Driver Setup................................ ................................ ................................ ................ 3-18  
Loading Driver................................ ................................ ................................ ............. 3-22  
Unloading Driver................................ ................................ ................................ .......... 3-23  
UNIX .................................................................................................................... 3-23  
Installing Driver ................................ ................................ ................................ ........... 3-24  
MOXA TTY Device Naming Convention ................................ ................................ ...... 3-27  
Baud Rate Settings................................ ................................ ................................ ...... 3-28  
Administration Utility – moxaadm ................................ ................................ ................ 3-28  
Setting MOXA Ports to Terminal................................ ................................ .................. 3-35  
Serial Programming Tools ................................................ 4-1  
Windows NT and Windows 95/98.......................................................................... 4-1  
Installation................................ ................................ ................................ ..................... 4-1  
PComm Programming Library ................................ ................................ .......................... 4-2  
Utilities ................................ ................................ ................................ .......................... 4-2  
UNIX ...................................................................................................................... 4-6  
Programming the MOXA Ports ................................ ................................ ...................... 4-6  
Extended UNIX Ioctl() Commands................................ ................................ ................. 4-6  
Utilities ................................ ................................ ................................ ........................ 4-13  
DOS..................................................................................................................... 4-15  
Installation................................ ................................ ................................ ................... 4-15  
DOS API-232 Library................................ ................................ ................................ ... 4-15  
Utilities ................................ ................................ ................................ ........................ 4-16  
RS-485 Programming for Opt8J .......................................................................... 4-17  
Connection Option (Opt8x) and Cable Wiring ........................ 5-1  
RS-232 Cable Wiring for Opt8A/B/C/D/S............................................................... 5-1  
RS-422 Cable Wiring for Opt8J/F/Z.......................................................................5-7  
RS-485 Cable Wiring for Opt8J ........................................................................... 5-10  
RS-422/485 Impedance Matching........................................................................ 5-11  
Troubleshooting............................................................... 6-1  
General Troubleshooting ....................................................................................... 6-1  
Windows NT .......................................................................................................... 6-4  
Windows 95/98 ......................................................................................................6-5  
DOS....................................................................................................................... 6-6  
UNIX ...................................................................................................................... 6-6  
Technical Reference ........................................................A-1  
Specifications.........................................................................................................A-1  
UART 16C550C.....................................................................................................A-2  
PC I/O Port Address Map.......................................................................................A-3  
DB62 Connector Pinouts .......................................................................................A-4  
1
1 Introduction  
Overview  
Sma rtio - The Smart Multiport Async Solutions  
The term Smartio stands for smart multiport serial I/O solution. The Sma rtio C168  
Series multiport boards offer 8 serial ports for connecting terminals, modems,  
printers, data acquisition equipment and any other serial devices to the PC/AT and  
its compatible systems. With the well-designed and fine-tuned device driver, the  
Smartio boards make full use of the 32 byte Tx/Rx FIFO and on-chip H/W flow  
control, so that they can transfer data without data loss even at high speed such as  
921.6 Kbps, which offers a reliable and high performance solution for serial  
multiport communications.  
The Smartio C168 Series is equipped with custom-designed ASIC chip which  
replaces lots of conventional ICs and reduces the board to half-size. The whole  
family supports 16 bit architecture. Full range of I/O addresses and IRQs are  
available. In addition, with on-board EEPROM for storing the configuration data,  
the family is designed without jumper or switch. These features make each port on  
the board truly independent to any other port and thus compatible with most existing  
multiport boards.  
The Smartio C168 Series is also available in PCI bus. Please contact MOXA  
dealer/distributor or MOXA Web site for more details.  
Smartio C168H/HS User’s Manual 1-1  
Hardware Configuration Method  
JP1 Switch  
ON  
Jumper  
1
2
3
4
. . . . . . . . .  
. . . . . . . . .  
Family  
Smartio  
Traditional  
Multipoort Board  
New : set I/O address  
and IRQ via software  
Utility.  
Traditional : set switch and  
and jumper manually for  
I/O address and IRQ.  
Instead of using traditional jumper or switch for IRQ and I/O address settings,  
hardware configuration of each port is easily set by DOS utility, Io-irq.exe, which  
read and write the on-board EEPROM for configuration information through the  
CAP (Configuration Access Port) address. The CAP address is the only channel  
via which the configuration utility Io-irq.exe can access the board, which is identical  
to the first port's base I/O address.  
The only jumper, JP1, is designed in case that users forget the CAP address.  
Normally JP1 is left open. When JP1 is short, the CAP address is forced to a fixed  
I/O address, 0xA700. However, to adopt quick installation (described later), it is a  
must to keep JP1 always short.  
Quick Installation  
To ease the hardware configuration, users who install only one Sma rtio C168  
Series board under Windows NT/95/98 are recommended to adopt quick  
installation described in Chapter 2.  
Because the family is so flexible in hardware configuration that they are compatible  
virtually with all kinds of other manufacturer's multiport boards using 16450 or  
16550 UART.  
1-2 Smartio C168H/HS User’s Manual  
Introduction  
Surge Protection  
To prevent the boards from damage caused by lighting or high potential voltage,  
surge protection technology is introduced in some model to protect the board.  
Operating System Support  
The family is operational under most popular operating systems such as Windows  
NT, Windows 95/98, SCO UNIX/XENIX/OpenServer, DOS, Linux, QNX,  
FreeBSD, UNIX SVR4.2, However, MOXA device drivers for Windows NT,  
Windows 95/98, Linux, SCO UNIX/OpenServer, UNIX SVR4.2 and DOS are  
provided for easier installation, configuration and better performance. In this  
manual, chapters for MOXA Windows NT, Windows 95/98, UNIX and DOS  
device drivers are included. For other compatible systems not mentioned, please  
refer to the respective operating system’s manual for how to install and configure  
the standard driver.  
MOXA Serial Comm Tools  
For easy application development, MOXA provides an easy-use serial  
communication library under Windows NT/95/98 (PComm) and DOS (API-232).  
Users can use this library to develop your own applications using Microsoft C,  
Turbo C, Assembly, QuickBASIC, Turbo Pascal, Clipper, Visual Basic, Visual C++,  
Borland Delphi, etc. Utilities, such as diagnostic and monitor, are included for  
diagnosing the board/port or monitoring the communication status.  
Wide Applications  
The Smartio C168 Series are suitable for many applications. Here are a few:  
l
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Internet/Intranet Connection  
Remote Access Application  
Multi-user Application  
Industrial Automation  
Office Automation  
Telecommunication  
PC-based (vending) Machine or Kiosk System  
Point-of-Sale (POS) System  
Smartio C168H/HS User’s Manual 1-3  
Features  
The Smartio C168 Series consist of members as follows,  
C168H  
8 port RS-232 or RS-422, high speed 16550C or compatible UART  
C168HS 8 port RS-232 or RS-422, surge protection, 16550C or compatible  
UART  
v
v
v
v
v
v
v
Custom-designed ASIC, compact board size (half-size)  
No switch no jumper, easily configured by software  
Independent I/O address, IRQ setting for each of 8 serial ports  
16 bit AT bus architecture, more IRQs supported  
Surge protection for RS-232 (C168HS)  
Isolation protection for RS-422 (optional connection box Opt8F)  
High speed 16550C Communication Controller with on-chip hardware flow  
control, no data loss  
v
v
PComm serial communication tool  
Support popular OS¡ WÐ indows NT, Windows 95/98, SCO UNIX/OpenServer,  
UNIX SVR4.2, DOS, Linux  
v
Compatible with many other OS¡ QÐNX, SCO XENIX, Free BSD  
C168H/HS  
Windows NT  
Windows 95/98  
DOS  
3
3
3
SCO UNIX/OpenServer  
UNIX SVR4.2  
Linux  
QNX  
SCO XENIX  
FreeBSD  
3
3
R
C
C
C
3 : Driver supported by Moxa and shipped with product  
R : Driver supported by Moxa but sent by request  
C : Driver supported by OS  
Note: MOXA FTP site is available for driver download  
1-4 Smartio C168H/HS User’s Manual  
Introduction  
Check List  
Upon unpacking the Smartio C168 Series package, you should find the following  
items in the package,  
v
v
Smartio C168 Series 8-port high performance async board  
Device driver diskettes:  
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Windows NT and Windows 95/98¡ 1Ñ  
DOS¡ 1Ñ  
UNIX¡ 1Ñ  
v
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C168H/HS User's Manual (This Manual)  
PComm Lite diskette¡ 1Ñ  
You need also one of the following connection options:  
Opt8A/Opt8B/Opt8S  
v
RS-232 connection box with 8 DB25 female/male/female ports, respectively  
(surge protection for Opt8S).  
1.5 meter DB62 to DB62 cable.  
v
Smartio  
C168 Series  
1
2
3
4
5
6
7
8
Opt8A/Opt8B/Opt8S  
Smartio C168H/HS User’s Manual 1-5  
Opt8C/Opt8D  
v
RS-232 octopus cable with 8 port male connectors, DB25 for Opt8C and DB9  
for Opt8D (1 meter long).  
P1P2 P3 P4  
Smartio C168 Series  
P5 P6 P7 P8  
Opt8C/Opt8D  
Opt8F/Opt8Z  
v
RS-422 connection box with 8 port female DB25 connectors (isolation  
protection for Opt8F).  
v
v
1.5 meter DB62 to DB62 cable.  
110V or 220V adapter.  
Smartio  
C168 Series  
Rx Tx  
1
2
3
4
5
6
7
8
Opt8F/Opt8Z  
1-6 Smartio C168H/HS User’s Manual  
Introduction  
Opt8J  
v
v
v
RS-422/485 connection box with 8 port female DB25 connectors.  
1.5 meter DB62 to DB62 cable.  
110V or 220V adapter.  
Smartio  
C168 Series  
Rx  
1
2
3
4
5
6
7
8
Opt8J  
Opt8J is the RS-422/485 connection box with 8 port female DB25 connectors for  
MOXA 8 port boards, including the Smartio C168 Series. There are 8-DIP switches  
on the side of the Opt8J. Each switch controls the communication mode (RS-422 or  
RS-485) of each port, respectively.  
12345678  
DIP  
ON  
RS-422/485 Port Switch of Opt8J  
1
2
3
4
5
6
7
8
ON  
DIP  
RS-422 Mode  
Set the respective switch to OFF position to use RS-422 interface. This means the  
port is always ready to transmit and receive data simultaneously (full-duplex).  
Smartio C168H/HS User’s Manual 1-7  
RS-485 Mode  
The Opt8J supports only 2-wire RS-485 communication. Set the respective switch to  
ON position to use RS-485 interface. This means the port can transmit data only  
when RTS is asserted, and receive data only when RTS is not asserted (half-duplex).  
Refer to Chapter “Connection Option (Opt8x) and Cable Wiring” for RS-422/RS-  
485 cable wiring. And also to Chapter “Serial Programming Tools” for Opt8J RS-  
485 programming details.  
Installation Guide  
This section gives a brief summary of how to install the Smartio C168 Series under  
each supported operating system. The installation is simple and involves the  
following stages:  
Configure Smartio C168 Series with  
io-irq.exe.  
Install the Smartio C168 Series board  
See Chapter “Hardware  
Installation”  
Install the software from the diskette  
See Chapter “Software  
Configure the driver for the board and ports  
Installation” for respective OS  
Connect the devices with the cable  
See Chapter “Connection  
Cable and Cable Wiring”  
Restart the system  
See Chapter “Software  
Installation”  
Check the driver initialization status  
If the system restart successfully, you may  
develop your applications or  
See Chapter “Serial  
Programming Tools”  
execute the desired applications  
1-8 Smartio C168H/HS User’s Manual  
2
2 Hardware Installation  
The installation of the Smartio C168 Series consists of hardware and software  
installation. The hardware installation is detailed in this chapter. The next chapter  
deals with the software installation for various operating systems.  
JP1  
Sma rtio C168 Series  
Default Settings  
The Smartio C168 Series has the following default (factory) settings:  
I/O address:  
0x180 (Port 1), 0x188 (Port 2), 0x190 (Port 3), 0x198 (Port 4)  
0x1A0 (Port 5), 0x1A8 (Port 6), 0x1B0 (Port 7), 0x1B8 (Port 8)  
IRQ:  
10  
INT Vector:  
0x1C0  
CAP Jumper JP1: Open  
Note ! If the default settings above are what you desire and good for the  
system without conflicts, you may simply install the board in the  
system and go directly to the next chapter, “Software Installation”.  
Otherwise, follow the instructions below.  
Smartio C168H/HS User’s Manual 2-1  
Now you should do either the normal hardware installation (detailed in the later  
section, “Hardware Installation with IO-IRQ Utility”) or the quick hardware  
installation (detailed right in the next section, “Quick Hardware Installation”). The  
latter is provided to facilitate the hardware installation, only under the  
circumstances that:  
u
u
u
Only one Sma rtio C168 Series board is allowed to install in a system.  
Windows NT and 95/98 are the only operating systems supported.  
I/O address 0xA700 must be free  
Quick Hardware Installation  
To fully utilize the superior feature of flexible hardware configuration design of the  
Smartio C168 Series, a quick and easy method of installation is designed for users,  
which absolutely free the users from hardware configuration effort, i.e., installation  
without running configuration program: Io-irq.exe. Simply always short the  
jumper JP1. The software and hardware configuration will be completed at the same  
time while doing the software configuration.  
Besides, the speed range will be set to from 50 to 921.6K bps by default, which is  
called High Speed Spectrum and detailed in the section, “Hardware Installation  
with IO-IRQ Utility”.  
How to Do Quick Hardware Installation  
Users who install only one Sma rtio C168 Series board under Windows NT/95/98  
are strongly recommended to do the quick installation as follows:  
1. Short the jumper JP1 on the upper-left corner of the board.  
2. Plug the board in PC with the desired system installed, which is powered off in  
advance.  
3. Process software installation, detailed in the next chapter.  
This is to specify the desired I/O address, IRQ and INT Vector in the software  
configuration panel, no matter what hardware settings are on the board. The  
2-2 Smartio C168H/HS User’s Manual  
Hardware Installation  
software configuration program will automatically update the hardware settings.  
After this, users already complete the whole installation.  
4. Shutdown System (Windows NT/95/98).  
5. DO power OFF and then ON (or Reset) the PC. (Please cold start.)  
6. Restart System (Windows NT/95/98).  
It is very important to keep the JP1 always short in this case. Without running the  
hardware configuration program, Io-irq.exe under DOS prompt, the software  
configuration program will automatically update the hardware settings of the board  
while updating the software settings. This saves the trouble doing hardware  
configuration. However, remember to cold start the system every time the  
configuration changed.  
Hardware Installation with IO-IRQ Utility  
This section is for those who can not use quick hardware installation:  
u
u
Install two or more Smartio C168 Series boards in a system.  
Fail to install, due to the I/O address 0xA700 is not available or has conflict in  
the system.  
u
Use operating systems other than Windows NT and 95/98.  
Before proceeding the software installation, detailed in the next chapter, “Software  
Installation”, do hardware configuration to setup the I/O address and IRQ with  
“Io-irq.exe”, detailed in the next section.  
Remember to keep the hardware settings in mind for the software installation.  
The Smartio C168 Series has the following default (factory) settings:  
I/O address : 0x180 (Port 1), 0x188 (Port 2), 0x190 (Port 3), 0x198 (Port 4)  
0x1A0 (Port 5), 0x1A8 (Port 6), 0x1B0 (Port 7), 0x1B8 (Port 8)  
IRQ :  
10  
INT Vector : 0x1C0  
Smartio C168H/HS User’s Manual 2-3  
Because the ASIC-designed Smartio C168 Series has no switch and no jumper for  
configuring manually the I/O address, IRQ, INT vector, etc. of the boards, you must  
run the software utility, Io-irq.exe, in the driver diskette under DOS system to  
change the hardware configuration.  
1. Choose a PC that has DOS system inside.  
2. Power off the PC.  
3. Make sure no hardware conflict and plug the board in a free 16-bit slot of the PC,  
one board at a time with JP1 open.  
+ If you are installing multiple boards, insert one board at a time and  
configure it using the Io-irq program before inserting the next board.  
This is to prevent conflict between two boards with same default  
hardware settings.  
The Smartio C168 Series has the following default (factory) settings,  
I/O address: 0x180 (Port 1), 0x188 (Port 2), 0x190 (Port 3), 0x198 (Port4)  
0x1A0 (Port 5), 0x1A8 (Port 6), 0x1B0 (Port 7), 0x1B8 (Port 8)  
IRQ:  
10  
INT Vector: 0x1C0  
Configuration Access Port (CAP): 0x180  
4. Power on the PC and enter into DOS system.  
5. Run the utility “Io-irq.exe” contained in the driver diskette to set up I/O address,  
IRQ and INT vector of the board. Please refer to the next section, “IO-IRQ  
Utility and Hardware Configuration” for more details. Or follow the on-line help  
to configure the Smartio C168 Series board.  
After completing the hardware configuration, the board is ready for use under  
operating systems, such as Windows NT and 95/98, DOS, UNIX etc.  
IO-IRQ Utility and Hardware Configuration  
Note that the CAP address, e.g. 0x180, is identical to the first port's I/O address  
except in one case that the JP1 jumper is installed before powering on the PC. In  
this case, the CAP address will be forced to 0xA700. The CAP address must be  
2-4 Smartio C168H/HS User’s Manual  
Hardware Installation  
typed correctly. With the correct CAP address, the utility can find the configuration  
stored in the on-board EEPROM and display it on the configuration panel. The  
CAP address is the only channel via which the configuration utility Io-irq.exe can  
access the board.  
1. Run the utility “Io-irq.exe” contained in the driver diskette to set up I/O address,  
IRQ and INT vector of the board.  
2. Select “Smartio/Industio ISA Family” and press ENTER key.  
Smartio C168H/HS User’s Manual 2-5  
3. Enter the CAP address of the Smartio C168 Series board to be configured.  
4. Configure the following parameters as necessary.  
Port Index  
Indicate the port index for each port.  
I/O address Enter the base I/O address for each port, either sequentially or  
not. Avoid to conflicting with any other devices.  
IRQ  
Enter the IRQ, 2, 3, 4, 5, 7, 10, 11, 12 or 15, for each port,  
independently or not.  
Speed  
This field specifies the use of normal or high speed capability.  
Normal speed ranges from 50 bps to 115.2 Kbps. High speed  
ranges from 50 bps to 921.6 Kbps. Smartio C168 Series  
support both normal and high speed spectra.  
2-6 Smartio C168H/HS User’s Manual  
Hardware Installation  
Note that, currently, port that uses MOXA Windows NT and  
95/98 driver will run at the displayed speed. To be clear, when  
Smartio C168 Series board is configured as High Speed  
Spectrum, any port driven by the Moxa-provided Windows  
NT and 95/98 driver will display the exact working speed. For  
example, the displayed speed 38.4 Kbps is equal to the working  
speed 38.4 Kbps.  
However, if the port is driven by NON Moxa-provided driver,  
such as standard serial driver, or Moxa drivers other than  
Windows NT and 95/98, such as DOS, the real working speed  
is equal to 8 times of the displayed speed. For example, a port,  
if set to Normal Speed Spectrum with 38.4 Kbps, will work at  
38.4 Kbps for sure; while a port, if set to High Speed Spectrum  
with displayed speed 38.4 Kbps, will actually work at 307.2  
Kbps (38.4 Kbps¡ 8Ñ).  
The following is the 8 times speed mapping list for quick  
reference purpose, particularly for DOS driver.  
Smartio C168H/HS User’s Manual 2-7  
Normal Speed Spectrum  
High Speed Spectrum  
50 (bps)  
75  
400 (bps)  
600  
110  
880  
134.5  
150  
1076  
1200  
300  
2400  
600  
4800  
1200  
1800  
2400  
4800  
7200  
9600  
19.2K  
38.4K  
57.6K  
115.2K  
9600  
14.4K  
19.2K  
38.4K  
57.6K  
76.8K  
153.6K  
307.2K  
460.8K  
921.6K  
INT Vector  
Enter the interrupt vector I/O address for all ports. I/O address  
for interrupt vector is from 00000H to 0FFFFH. Interrupt  
vector is one byte of I/O address, in which each bit is used to  
indicate the occurrence of interrupt for corresponding port. To  
use interrupt vector, type in the hardware Interrupt vector I/O  
address. If not using interrupt vector, type 0 or leave blank as  
the interrupt vector.  
There are two modes for the Smartio C168 Series driver. One  
is using interrupt vector, the other is not using interrupt vector.  
Driver employing interrupt vector scheme is supposed to have  
better performance than employing polling scheme.  
5. Press F10 to save the configuration and exit the utility.  
2-8 Smartio C168H/HS User’s Manual  
3
3 Software Installation  
In this chapter, the software driver installation, configuration and driver  
update/removal procedures are described for various operating systems, including  
Windows NT, Windows 95/98, UNIX and DOS Before proceeding with the software  
installation, complete the hardware installation, detailed in previous chapter,  
“Hardware Installation”.  
If it is necessary for you to develop your own applications, please also refer to the  
next chapter, “Serial Programming Tools”, for programming issues.  
Windows NT  
Windows NT supports up to 256 serial ports, from COM1 to COM256. To fully  
integrate the advanced features of Windows NT, multi-process and multi-thread,  
pure 32-bit Windows NT device drivers are developed for the Smartio C168 Series  
multiport boards. The driver conforms to Win32 COMM API standard.  
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To install the driver for the first time, please go directly to the next section,  
“Installing Driver”.  
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If you already have installed the driver and want to re-configure the board and  
port, add more boards or delete boards, please refer to the section, “Configuring  
Board and Port”.  
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To update or remove the driver, please go to the section, “Updating Driver” or  
“Removing Driver”.  
Smartio C168H/HS User’s Manual 3-1  
Installing Driver  
Following is the procedure for installing the Smartio C168 Series driver for the  
first time under Windows NT 4.0.  
Note ! Make sure the board(s) has(have) already been plugged in the system  
slot(s) if you are doing quick installation.  
1. Please log in NT as Administrator.  
2. Open the [Control Panel], click on the [Network] icon and select the  
[Adapters] tab.  
3. Click on the [Add] button, then the [Have Disk...] button in “Select Network  
Adapter”.  
4. Specify the exact path of the driver diskette, A:\WINDOWS.NT. Then click  
[OK].  
3-2 Smartio C168H/HS User’s Manual  
Software Installation  
5. Select “MOXA Smartio/Industio Family multiport board” in the “Select  
OEM Option” dialog box, and then click [OK] to enter the “Moxa  
Smartio/Industio Configuration Panel” dialog box to start the installation.  
6. In the “Moxa Smartio/Industio Configuration Panel” dialog box, click [Add]  
to enter “Property” dialog box to add the Smartio C168 Series board. Select the  
C168 Series” in the “Board Type” field. If necessary, type the desired interrupt  
vector address, in the “INT Vector” field. Select the desired interrupt number in  
the “Interrupt No.” field. Type the desired base I/O address, in the “Base I/O  
Port Address” field. All the settings should match settings that are physically set  
on the board and conflict with no other devices.  
Smartio C168H/HS User’s Manual 3-3  
Note ! You may go directly to the step 8 if you need not change any setting.  
7. In the “Property” dialog box, select the desired port in the port list and click  
[Port Setting] to enter the individual “Port #” setting dialog box to change the  
port COM number mappings or FIFO settings.  
3-4 Smartio C168H/HS User’s Manual  
Software Installation  
l
Port Number  
You have to set up all the ports of the board with the desired “COM  
number”, which should not conflict with other COM number in use. In  
this “Individual Port Setting” dialog box, you may have two ways to map  
the physical ports to COM numbers depending on the check box “Auto  
Enumerating COM number”.  
If “Auto Enumerating COM Number” is checked and specify the COM  
number of the first port, subsequent ports are mapped to continuous  
COM numbers. For instance, if first port is mapped to COM3, then  
second port is mapped to COM4 sequentially.  
If “Auto Enumerating COM Number” is not checked, specify the COM  
number for individual port. For instance, the second port can be out of  
sequence, say COM10, while the first port is mapped to COM3.  
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Rx FIFO Trigger  
Rx FIFO trigger levels, at 1, 4, 8 or 14 bytes, are available, and the  
default value is 14 bytes.  
Tx FIFO Size  
Tx FIFO sizes from 1 to 16 bytes are available, and the default value is  
16 bytes.  
8. Click [OK] in the “Port #” and the “Property” dialog boxes to go back to the  
“Moxa Smartio/Industio Configuration Panel” dialog box.  
Note ! If you need to install more than one board, click [Add] and repeat  
steps 6 to 8 to configure another board. Up to four Smartio C168  
Series boards can be installed in a system.  
Click [OK] to finish the configuration.  
Smartio C168H/HS User’s Manual 3-5  
9. When configuration is done, click on [OK] button in the “Network Settings”  
dialog box.  
10.Restart Windows NT system. The latest configuration will not take effect unless  
the system restarts.  
Note ! The latest configuration will not take effect unless the system  
restarts.  
11. Once the system restarts, you may check the event log issued by the MOXA  
driver to see if the ports of the board are initialized successfully.  
l
Enter the [Administrative] group, click on the [Event Viewer] icon and  
select [System Event Log] to check a message similar to “MOXA  
Smartio C168 Series, with first serial port COM3, has been enabled”  
for each configured board.  
l
If an error message similar to “Cannot find any configured MOXA  
Smartio C168 Series board!” appears, refer to the “Troubleshooting”  
chapter for solutions.  
3-6 Smartio C168H/HS User’s Manual  
Software Installation  
Note ! Once the board and the driver are installed and the driver restarts  
successfully, you can start to develop applications with the PComm  
library (See “Serial Programming Tools” chapter) or the Microsoft  
Win32 API. You can also execute any ready-made applications, such  
as PComm utility Terminal emulator (See “Serial Programming Tools”  
chapter) or HyperTerminal to transmit/receive data, as well as Remote  
Access Service to provide dial-up networking capabilities.  
Configuring Board and Port  
If you already have installed the driver and want to re-configure the ports, please  
follow this procedure.  
1. In the [Control Panel], click on the [Network] icon and select the [Adapters] tab.  
2. Select “MOXA Smartio/Industio Family Adapter” in “Network Adapters”.  
Smartio C168H/HS User’s Manual 3-7  
3. Click on the [Property] button to open the “Moxa Smartio/Industio  
Configuration Panel” dialog box. Please see steps 6-10 in the previous section,  
“Installing Driver”, for more details.  
In this configuration panel, you may:  
l
Click [Property] to enter “Property” dialog box to configure the selected  
board with the correct “COM Number”, “INT Vector”, “Interrupt no” and  
“Base I/O Port Address”. Please see steps 6 to 8 in the previous section,  
“Installing Driver”, for more details, except that the “Board Type” field is  
not supposed to be changed.  
l
l
Click [Add] to add one more board that is not yet configured in the system.  
Please see steps 6 to 8 in the previous section, “Installing Driver”, for more  
details.  
Click [Remove] to remove the board currently selected from the configured  
board list.  
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Click [OK] to confirm the configuration changes you made.  
Click [Cancel] to leave the dialog with the configuration unchanged.  
3-8 Smartio C168H/HS User’s Manual  
Software Installation  
Updating Driver  
To update the driver for the Smartio C168 Series boards, simply remove the driver,  
as described in the next section, and reinstall it as detailed in section, “Installing  
Driver”.  
Removing Driver  
To remove the driver for the Smartio C168 Series boards,  
1. Open the [Control Panel], click on the [Network] icon, and select the  
[Adapters] tab.  
2. Select “MOXA Smartio/Industio Family Adapter” in the adapter list, then  
click on the [Remove] button and the [OK] button to remove the driver.  
3. Restart the system to activate the new configuration.  
Windows 95/98  
Windows 95/98 supports up to 128 serial ports, from COM1 to COM128. To fully  
integrate the advanced features of Windows 95/98, multi-process and multi-thread,  
pure 32-bit Windows 95/98 virtual device port drivers (VxD) compliant with  
communication drivers (VCOMM) are developed for the Smartio C168 Series and  
other MOXA multiport boards. The drivers conform to the Win32 COMM API  
standard.  
l
To install the driver for the first time driver, please go directly to the section,  
“Installing Driver”.  
l
If you already have installed the driver and want to re-configure the board and  
port, add more boards or delete boards, please refer to the section, “Configuring  
Board and Port”.  
l
To update or remove driver, please go to the sections, “Updating Driver” and  
“Removing Driver”.  
Smartio C168H/HS User’s Manual 3-9  
Installing Driver  
Up to four Smartio C168 Series boards can be installed together as long as the I/O  
addresses and IRQ number resources are sufficient and available in a system.  
The following is the procedure for installing Smartio C168 Series for the first time  
under Windows 95/98:  
1. Run Setup95.exe in the driver diskette.  
2. Click on [Next>] button in the “Welcome ...” message dialog box. And then  
click on [Next>] button in the “Ready ...” message dialog.  
3. Click on [Finish] button in the “Complete ...” message dialog to enter the  
configuration panel.  
4. The “Moxa Smartio/Industio Configuration Panel” dialog will pop up for you  
to configure the boards and ports.  
5. In the “Moxa Smartio/Industio Configuration Panel” dialog box, click [Add]  
to enter “Property” dialog box to add the Smartio C168 Series board. Select the  
“C168 Series” in the “Board Type” field. If necessary, type the desired interrupt  
vector address, in the “INT Vector” field. Select the desired interrupt number in  
the “Interrupt No.” field. Type the desired base I/O address, in the “Base I/O  
Port Address” field. All the settings should match settings that are physically set  
on the board and conflict with no other devices.  
3-10 Smartio C168H/HS User’s Manual  
Software Installation  
Note !  
Go directly to the step 7 if you need not change any setting.  
6. In the “Property” dialog box, select the desired port in the port list and  
click [Port Setting] to enter the individual “Port #” setting dialog box to  
change the port COM number mappings or FIFO settings.  
Smartio C168H/HS User’s Manual 3-11  
l
Port Number  
You have to set up all the ports of the board with the desired “COM  
number”, which should not conflict with other COM number in use. In  
this “Individual Port Setting” dialog box, you may have two ways to map  
the physical ports to COM numbers depending on the check box “Auto  
Enumerating COM number”.  
If “Auto Enumerating COM Number” is checked and specify the COM  
number of the first port, subsequent ports are mapped to continuous  
COM numbers. For instance, if first port is mapped to COM3, then  
second port is mapped to COM4 sequentially.  
If “Auto Enumerating COM Number” is not checked, specify the COM  
number for individual port. For instance, the second port can be out of  
sequence, say COM10, while the first port is mapped to COM3.  
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Rx FIFO Trigger  
Rx FIFO trigger levels, at 1, 4, 8 or 14 bytes, are available, and the  
default value is 14 bytes.  
Tx FIFO Size  
Tx FIFO sizes from 1 to 16 bytes are available, and the default value is  
16 bytes.  
7. Click [OK] in the “Port #” and the “Property” dialog boxes to go back to the  
“Moxa Smartio/Industio Configuration Panel” dialog box.  
Note ! If you need to install more than one board, click [Add] and repeat  
steps 5 to 7 to configure another board. Up to four Smartio C168  
Series boards can be installed in a system.  
Click [OK] to finish the configuration.  
3-12 Smartio C168H/HS User’s Manual  
Software Installation  
8. Restart Windows 95/98 system.  
Note ! The latest configuration will not take effect unless the system  
restarts.  
9. When system restarts, all the error conditions of the board will be popped up  
onto the screen if any. Otherwise, everything should be fine.  
If error message like “Smartio C168 Series (CAP=0x0180, port 1=COM3):  
Board is not found” appears, refer to chapter, “Troubleshooting”, for solutions.  
Note ! Once the board and the driver are installed and the driver restarts  
successfully, you can start to develop applications with the PComm  
library (See “Serial Programming Tools” chapter) or the Microsoft  
Win32 API. You can also execute any ready-made applications,  
such as PComm utility Terminal emulator (See “Serial  
Programming  
Tools”  
chapter)  
or  
HyperTerminal  
to  
transmit/receive data, as well as Remote Access Service to provide  
dial-up networking capabilities.  
Smartio C168H/HS User’s Manual 3-13  
Configuring Board and Port  
If you already have installed the driver and want to re-configure the Smartio C168  
Series board and ports, add more boards or delete boards under Windows 95/98, the  
following is the procedure for you.  
1. Click on the Taskbar [Start] button, then select [Programs] menu, then  
[MOXA Utilities] menu and then [Moxa Smartio/Industio Configuration  
Panel] icon.  
2. The Smartio/Industio configuration panel will be popped up. Please see steps 5-  
7 in the previous Section “Installing Driver” for more details.  
In this configuration panel, you may:  
l
Click [Property] to enter “Property” dialog box to configure the selected  
board with the correct “COM Number”, “INT Vector”, “Interrupt no” and  
“Base I/O Port Address”. Please see steps 5 to 7 in the previous section,  
“Installing Driver”, for more details, except that the “Board Type” field is  
not supposed to be changed.  
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Click [Add] to add one more board that is not yet configured in the system.  
Please see steps 5 to 7 in the previous section, “Installing Driver”, for more  
details.  
Click [Remove] to remove the board currently selected from the configured  
board list.  
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Click [OK] to confirm the configuration changes you made.  
Click [Cancel] to leave the dialog with the configuration unchanged.  
3-14 Smartio C168H/HS User’s Manual  
Software Installation  
Updating Driver  
Open [Control Panel] icon, and then [System] icon, and then select [Device  
Manager] tab. Then select and open the “MOXA Smartio/Industio Multiport  
Board” option and then select the “C168 Series”. Click on [Properties] button and  
then select [Driver] tab and then click on [Update Driver] button.  
Smartio C168H/HS User’s Manual 3-15  
Removing Driver  
Open [Control Panel] icon, and then [Add/Remove Programs] icon, and then  
select [Install/Uninstall] tab. Then select and open the “MOXA Smartio/Industio  
Driver” option and then enter [OK] to remove the driver.  
3-16 Smartio C168H/HS User’s Manual  
Software Installation  
DOS  
MOXA DOS API-232 is a software package that assists users to develop and/or  
debug programs for serial communications. This section will show you how to  
install the package, how to setup up the driver, and how to load or unload driver.  
For details of the serial programming (API-232 Library) and utilities, please refer to  
the next chapter, “Serial Programming Tools”.  
Installing Driver  
Run the installation program, DOSINST.EXE, in the DOS driver diskette. Specify  
the target API-232 directory (e.g. C:\MOXA) where software driver will be copied.  
Press F2 to start the installation.  
Smartio C168H/HS User’s Manual 3-17  
After installation is complete, you will be prompted to proceed running setup  
program. It is strongly recommended to do so.  
Driver Setup  
The following are steps for setting up the Smartio C168 Series driver. Note that it is  
not intended to illustrate all the convenient functions of the setup programs when  
configuring the boards. Please refer to the F1 on-line help instructions as running  
setup program.  
1. Run the setup program, BIN\SETUP.EXE, in the API-232 directory. Select  
Smartio/Industio ISA Family” in the “Driver Selection” dialog box.  
3-18 Smartio C168H/HS User’s Manual  
Software Installation  
2. Press Enter to pop up the SETUP dialog box. In the SETUP dialog box, Press  
F8 to specify the CAP Address and press ENTER and then type Y (YES) to  
load the configuration of the board to be setup.  
Smartio C168H/HS User’s Manual 3-19  
3. Now the configuration of the desired Smartio C168 Series board will be shown  
along with other default settings, such as port number, buffer size, etc.  
Note !  
Up to now you have completed the setup for Smartio C168 Series  
board. You may skip this step and go directly to the next step 5 if  
you need not change any setting or configure any board.  
3-20 Smartio C168H/HS User’s Manual  
Software Installation  
You may now enter/modify each port’s configuration. These displayed values  
are the port initial values as driver is loaded.  
Legend:  
Some noticeable fields and functions are explained below.  
This is actually the port ID of each port. The application  
software will refer to the port by its port number (ID).  
Duplicated port number is not allowed. That is, each  
MOXA serial port is referred to as port number in terms  
of serial programming.  
Port number:  
You may map the port number range to the one you prefer  
between 0 and 255 as long as no port number overlapping  
condition or port number undefined condition occurs.  
Generally, you should take the convenience of  
programming into consideration when specifying the port  
numbers for the board.  
TxD buf size:  
RxD buf size:  
The transmission (output) buffer allocated in the system  
for each port.  
The receiving (input) buffer allocated in the system for  
each port.  
F5: Group Edit: This is a convenient function that helps you edit the  
configuration of several ports at one time as a group.  
Smartio C168H/HS User’s Manual 3-21  
F6: INT vector:  
This is to set interrupt vector for each port. You can set  
this feature to “Yes” (default) and gain best performance  
for the board.  
4. Press F10 to save the latest configuration and exit the SETUP program.  
Loading Driver  
Having completed the setup, you can load the driver, “BIN\SER-DRV.EXE”, at  
the DOS prompt. The driver will detect the Smartio C168 Series board  
automatically. If the board(s) is(are) detected, a message similar to below will show:  
API-232 Version 3.5  
Universal 2/4/8 serial ports Communication Driver  
Setup driver …  
Device driver setup O.K.  
It means the Smartio C168 Series driver is installed properly. At this point, you are  
ready to execute application that supports API-232 functions, or start developing  
applications using API-232 library.  
3-22 Smartio C168H/HS User’s Manual  
Software Installation  
If something went wrong, for instance, the board does not match the configuration  
or the board is missing, the screen will show a message like:  
API-232 Version 3.5  
Universal 2/4/8 serial ports Communication Driver  
Setup driver …  
None serial port found!!  
It means the Smartio C168 Series driver is not installed properly. Please refer to  
chapter, “Troubleshooting”, for possible reasons and solutions.  
Unloading Driver  
To unload (release) the Smartio C168 Series driver from memory, type “SER-  
DRV/Q” at the DOS prompt  
UNIX  
There are various UNIX operating systems, such as SCO UNIX, UNIX SVR4.2,  
XENIX and Solaris, etc. Different types of UNIX drivers are required for different  
UNIX. Moxa supports device drivers currently for SCO UNIX/OpenServer and  
UNIX SVR4.2 .  
In this section, driver installation procedure is described. Administration utility,  
moxaadm, is explained, which is for configuration, monitor and terminal emulation.  
Related issues such as device naming, baud rate settings and terminal enable are  
stated.  
If you are interested in UNIX serial programming, extended Ioctl() commands are  
provided in Chapter “Serial Programming Tools” for advanced programming.  
UNIX-specific troubleshooting is included in Chapter “Troubleshooting”.  
Smartio C168H/HS User’s Manual 3-23  
Installing Driver  
The following description is for Smartio C168 Series under SCO UNIX/OpenServer  
and UNIX SVR4.2.  
Step 1. Login the UNIX system as a super user (root).  
Step 2. Change to root directory.  
# cd  
/
Step 3. Insert the UNIX driver diskette into the floppy drive A: (or B:).  
If driver files are obtained from MOXA FTP service, put them under  
/tmp/moxa directory and skip the following 'tar' command.  
Step 4. Extract the files by,  
# tar xvf /dev/fd0135ds18 /tmp/moxa/mxinstall (if A: floppy drive)  
Step 5. Start the installation program,  
# /tmp/moxa/mxinstall  
Now follow the prompted instructions to finish the driver installation.  
Choose the listed and desired operation system when asked. Currently,  
MOXA supports SCO UNIX (and SCO OpenServer, SCO Open Desktop)  
and UNIX SVR4.2 (and UnixWare). Ask your dealer for newly supported  
device drivers. If your system is none of the listed, choose the closest one  
to try.  
Copyright (C) 199x Moxa Technologies Co., Ltd. All Rights Reserved.  
MOXA UNIX Device Driver Installation Ver. x.x  
3-24 Smartio C168H/HS User’s Manual  
Software Installation  
Please select one of the following OSs:  
1. SCO UNIX  
2. UNIX SVR4.2  
Select :  
Please select one of the devices where the driver diskette/files put:  
1. /dev/fd0135ds18  
2. /dev/fd096ds15  
3. /dev/fd1135ds18  
4. /dev/fd196ds15  
5. Hard Disk  
(A: 1.44MB )  
(A: 1.2 MB  
(B: 1.44MB )  
)
(B: 1.2 MB  
/tmp/moxa  
)
Select :  
Then the MOXA Multiport Board Installation Utility will show for  
board installation.  
Choose C168 Series driver and follow the instructions to install.  
Step 6. Configure the board by,  
# moxaadm  
The moxaadm utility is used to tell the UNIX driver how many Smatio  
C168 Series boards are installed, what their basic setting (I/O or IRQ), etc.  
It is also used to remove the Smartio C168 Series UNIX driver from the  
system. Whenever the setting is changed, run this utility again and tell the  
UNIX driver what is changed. Refer to section “Administration Utility-  
moxaadm” for more information.  
This utility is not intended to change the Smartio C168 Series  
“hardware” I/O address nor IRQ setting. If you need to change the  
Smartio C168 Series hardware IRQ, for example, you need to execute  
IO-IRQ utility under DOS environment. The IO-IRQ utility is contained  
in the Dos/Windows3.x driver diskette.  
Only up to two Smartio C168 Series boards are allowed to be installed  
under UNIX systems when MOXA UNIX driver is used.  
Smartio C168H/HS User’s Manual 3-25  
Step 7. Now you may shutdown the system and reboot. If you have trouble in  
booting the new UNIX kernel, use the backup kernel (/unix.moxa or  
/stand/unix.moxa) to boot your system and the system will work as before.  
Refer to Chapter “Troubleshooting” for more information.  
After the system starts up again, the following successful messages will  
show:  
For SCO UNIX/OpenServer,  
“C168  
0x0180-0x01BF 11 Ver = x.x type=C168H (high speed)”  
For UNIX SVR4.2,  
“C168H board, base address 0x180, irq 5, Ver. x.x (high speed)”  
where high speed indicates the port is in high speed status; otherwise, in  
normal speed status.  
If the following error message appears:  
For SCO UNIX/OpenServer,  
“WARNING! C168 board IRQ at 11 mismatch (base address at 0x180)!”  
For UNIX SVR4.2,  
“WARNING! C168 board IRQ at 11 mismatch (base address at 0x180)!”  
indicates the IRQ of the port is different between hardware and software  
configurations. However, only this port is disabled. Other ports should  
still work.  
If the following common error message appears:  
“WARNING! C168 board base address at 0x180 not found!” or  
“WARNING! C168 board interrupt vector disabled (Board base =  
0x180 )!”, indicates the base address of the board is not found or interrupt  
vector of the board is disabled. In these cases, all ports will not work.  
Please see Chapter “Troubleshooting” for solutions.  
3-26 Smartio C168H/HS User’s Manual  
Software Installation  
MOXA TTY Device Naming Convention  
If the Smartio C168 Series is successfully configured, there will be two tty devices  
created for each port at /dev directory: one is non-MODEM tty (e.g. ttye11), and  
the other is MODEM tty (e.g. ttyE11). The two devices are actually accessing the  
same physical port except that the MODEM tty has to check the ON status of DCD  
signal to be able to open device, and closing device automatically as DCD signal is  
OFF.  
The convention of the MOXA tty device name is /dev/tty{e-f}{1}{1-8}, where:  
"tty" + "A" + "B" + "C"  
Port ordinal number, 1-8  
Always 1  
Board ordinal number  
"e" or "E": 1st MOXA board  
"f" or "F": 2nd MOXA board  
Capitals indicate a MODEM port  
Standard tty device prefix  
For example:  
/dev/ttye11  
/dev/ttye12  
/dev/ttye13  
/dev/ttye14  
/dev/ttye15  
/dev/ttye16  
/dev/ttye17  
/dev/ttye18  
Opt8A  
Smartio C168H/HS User’s Manual 3-27  
Baud Rate Settings  
For Smartio C168 Series set to High Speed Spectrum, the real working speed,  
is exactly eight times of the speed displayed by “stty” command. A port, if set to  
Normal Speed Spectrum with 38.4 Kbps, will work at 38.4 Kbps for sure; while  
a port, if set to High Speed Spectrum with displayed speed 38.4 Kbps, will  
actually work at 307.2 Kbps (38.4 Kbps¡ 8Ñ).  
Note also that the 50 baud rate, B50, will no longer stand for 50 bps, instead, it  
means 57600 bps, and 75 baud rate, B75, for 115.2 Kbps. Furthermore, if the C168  
Family H Series board is set to High Speed Spectrum, the real working speed is 8  
times of the displayed speed. Hence, B50, 57.6 Kbps, is for 460.8 Kbps and B75,  
115.2 Kbps, is for 921.6 Kbps.  
Administration Utility – moxaadm  
Users can use the administration utility, moxaadm, to change the Smartio C168  
basic and advanced configuration, to monitor the ports' activity, to use terminal  
emulation and to remove the installed MOXA driver from the system.  
3-28 Smartio C168H/HS User’s Manual  
Software Installation  
Basic Configuration  
In the [Basic configuration] dialog, users can set base I/O address and interrupt,  
which should be the same as the hardware configuration of the boards. Kernel  
rebuilding is required if any setting is changed.  
In [getty Setting] sub-dialog, there is one noticeable field:  
Non-Modem and Modem Baud Rate  
This field stands for the initial baud rate symbol and hunt sequence for Non-Modem  
/Modem tty. It is simply for setting parameters of getty entries in system file  
/etc/inittab which could also be manually modified by system administrator. Its  
value comes from the UNIX system “getty default” file, i.e., “/etc/gettydefs”. Modify  
this field to suit your need.  
In some cases, you may need to modify the “getty default” file as well. For example,  
in some UNIX systems, the “9600” symbol indicated 8-data-bit no-parity while in  
Smartio C168H/HS User’s Manual 3-29  
others it may stand for 7-data-bit, even-parity. So, please examine the “getty  
default” file carefully, and make sure the terminal settings is the same. Otherwise,  
garbled data will be inevitable.  
Advanced Configuration  
In the [Advanced configuration] dialog, users can set baud rate mapping, Rx FIFO  
trigger level, Tx FIFO trigger level and RTS/CTS hardware flow control.  
Baud Rate Mapping  
There are two different baud rate tables can be selected: High Band and Low Band.  
The highest baud rate for High Band is 921.6K bps, while 38.4K bps for Low Band.  
Because of the limit of UNIX termio/termios definition, the highest baud rate label  
is B38400 (mapped to 38.4K bps). If users wish to use the baudrate higher than  
38.4K bps for MOXA boards, this baud rate will be re-mapped to the lower as  
defined in the below baudrate-mapping table:  
3-30 Smartio C168H/HS User’s Manual  
Software Installation  
Label  
High/Normal Speed  
Low Band  
Normal Speed  
High Speed  
High Band  
High Band  
B50  
B75  
B110  
B134  
B150  
B200  
50  
75  
110  
134  
150  
200  
57600  
115200  
110  
134  
150  
57600  
115200  
230400  
460800  
921600  
200  
200  
B300  
300  
300  
300  
B600  
600  
600  
600  
B1200  
B1800  
B2400  
B4800  
B9600  
B19200  
B38400  
1200  
1800  
2400  
4800  
9600  
19200  
38400  
1200  
1800  
2400  
4800  
9600  
19200  
38400  
1200  
1800  
2400  
4800  
9600  
19200  
38400  
Note: You can press F1 on-line help to get more baud rate mapping  
information.  
In [Port Feature Settings] sub-dialog, there are three noticeable fields:  
Rx FIFO Trigger  
Rx FIFO trigger levels, at 1, 4, 8 or 14 bytes, are available, and the default value is  
14 bytes.  
Smartio C168H/HS User’s Manual 3-31  
Tx FIFO Trigger  
Tx FIFO sizes from 1 to 16 bytes are available, and the default value is 16 bytes.  
RTS/CTS Hardware Flow Control  
This feature is for more flexible driver behavior. If set to “Disable” (default), CTS  
signal is not needed for tty port to transfer data and RTS/CTS hardware flow control  
function in driver is disabled. On the contrary, if set to “Enable”, CTS signal is  
needed for tty port to transfer data and RTS/CTS hardware flow control function in  
driver is enabled.  
Port Monitoring  
This utility gives you a quick view about all the MOXA ports' activities. You can  
easily learn each port's total received/transmitted (Rx/Tx) character count since the  
time when the monitoring is started. Rx/Tx throughputs per second are also reported  
in interval basis (e.g. the last 5 seconds) and in average basis (since the time the  
monitoring is started). You can reset all ports' count by <HOME> key. <+> <->  
(plus/minus) keys to change the displaying time interval.  
Press Enter on the port, that cursor stay, to view the port's communication  
parameters, signal status, and input/output queue.  
3-32 Smartio C168H/HS User’s Manual  
Software Installation  
Terminal Emulation  
This utility provides data sending and receiving ability of all tty ports, especially for  
MOXA ports. It is quite useful for testing simple application, for example, sending AT  
command to a modem connected to the port or used as a terminal for login purpose.  
Note that this is only a dumb terminal emulation without handling full screen operation.  
Besides, data scope function with pattern/file transfer is provided.  
1. Select and Press Enter on item “Communication Setup” to setup up all the  
communication parameters for connection.  
Smartio C168H/HS User’s Manual 3-33  
2
Select and enter “Dumb Terminal” to enter terminal emulation. Or select and  
enter “Advance Transfer Modes” to perform pattern or file transfer with  
protocols such as ZModem.  
Driver Removal  
If you want to remove the Smartio C168 Series device driver and return to your  
previous system configuration, simply press Enter in this function entry and answer  
Y” to confirm. Then the system will be rebuild. This may take some time. If you  
answer “N”, no action will be taken.  
3-34 Smartio C168H/HS User’s Manual  
Software Installation  
Setting MOXA Ports to Terminal  
Following procedure is how to set the MOXA port to the “Terminal” for login  
purpose, taking ttya11 as an example,  
SCO UNIX/OpenServer  
# enable /dev/ttye11  
UNIX SVR4.2  
1. Edit (e.g. use vi editor) the file /etc/inittab.  
2. Modify the tty entry from "ma11:23:off:/etc/getty ttye11 9600" to  
"ma11:23:respawn:/etc/getty ttye11 9600".  
3. # init q  
Or refer to your UNIX system manuals for how to activate a tty port.  
Smartio C168H/HS User’s Manual 3-35  
3-36 Smartio C168H/HS User’s Manual  
4
4 Serial Programming Tools  
Moxa supports easy but powerful serial programming library and communication  
troubleshooting utilities under Windows NT, Windows 95/98, UNIX and DOS. You  
will save greatly the developing time, using MOXA Serial Programming Tools.  
The following sections will details the installation, the library and the utilities for  
various platforms.  
Windows NT and Windows 95/98  
PComm, the professional serial comm tool for PC, is a software package under  
Windows NT and Windows 95/98, which consists of powerful serial  
communication library for easy programming in most popular languages, useful  
utilities such as diagnostic, monitor and terminal emulator, illustrative example  
programs and comprehensive on-line documents.  
The serial communication library is useful for developing a system for data  
communication, remote access, data acquisition or industrial control in the  
Windows NT and Windows 95/98 environment, which offers an easier solution  
compared with the more complex Windows Win32 COMM API.  
Installation  
To install PComm, please run \Setup.exe in the diskette. Note that PComm  
diagnostic and monitor utilities are for MOXA boards only. MOXA Windows NT or  
Windows 95/98 device driver as well as MOXA board are required. The driver are  
installed separately and detailed in Chapter “Software Installation”.  
Smartio C168H/HS User’s Manual 4-1  
PComm Programming Library  
The serial communication library is to assist users to develop programs for serial  
communications for any COM port complying with Microsoft Win32 API. It can  
ease the implementation of multi-process and multi-thread serial communication  
programs and hence greatly reduce the developing time.  
For complete library function description and example programs for Visual C++,  
Visual Basic and Delphi, please see help file and example programs in PComm  
directory for more details.  
Utilities  
The followings are short descriptions of each utility. For details, please see on-line  
help as running utilities.  
4-2 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Diagnostic (for MOXA boards only)  
A convenient diagnostic program provides internal and external testing, such as  
IRQ, TxD/RxD, UART, CTS/RTS, DTR/DSR, DTR/DCD testing, etc., for the  
MOXA boards and ports to verify correct operation of both the software and  
hardware.  
Smartio C168H/HS User’s Manual 4-3  
Monitor (for MOXA boards under Windows NT Only)  
A useful port status monitoring program allows you to watch the selected MOXA  
COM ports' data transmitting/receiving throughput and communication line status  
which are updated and displayed on the screen at every time interval. In addition,  
you may click on one of the specific displayed port in order to see the current  
communication parameters and status of that port.  
4-4 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Terminal Emulator  
The Terminal Emulator features multi-windows and supports terminal types of  
VT100 and ANSI. You can transfer data interactively, send pattern periodically or  
transfer file using ASCII, XMODEM, YMODEM, ZMODEM and KERMIT  
protocols.  
Smartio C168H/HS User’s Manual 4-5  
UNIX  
Programming the MOXA Ports  
The system calls that apply to standard tty port can also be applied to MOXA port  
since MOXA port conforms to UNIX tty standard. System calls are like open(),  
ioctl(), read(), write(), close(), etc. Please refer to your UNIX Programmer's  
Reference manual.  
However, these system services only provide limited functions and thus may not  
satisfy the sophisticated programmers' need. In order to meet the user's special  
purpose, MOXA supports extended services through ioctl() command, which are:  
1. MIBUFED  
2. MOBUFED  
3. MTCRTS  
4. MTCDTR  
(= 0x401) To get byte count in input buffer.  
(= 0x402) To get byte count in output buffer.  
(= 0x403) To control RTS output signal.  
(= 0x404) To control DTR output signal.  
5. MLOWATER (= 0x405) To set output buffer low water level.  
6. MSTATUS (= 0x407) To read modem line status (CTS/DSR/DCD).  
7.MHWFLOW (= 0x40e) To enable/disable the hardware flow control.  
The next Section details all the commands.  
Extended UNIX Ioctl() Commands  
The following lists the syntax of MOXA extended functions for both non-SVR4.x  
and SVR4.x UNIX. The variable moxa_fd is the returned file descriptor by open() a  
specific MOXA port. For example,  
int moxa_fd;  
moxa_fd = open(“/dev/ttye11”,O_RDWR);  
1. MIBUFED  
This function let you know how many bytes queued in input buffer when this  
function is issued.  
4-6 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Syntax for SCO UNIX/OpenServer  
#define MIBUFED 0x401  
int  
count; /* number of bytes queued in the buffer */  
ioctl(moxa_fd, MIBUFED, &count);  
Syntax for UNIX SVR4.2  
#include  
#include  
<sys/stropts.h>  
<sys/sysmacros.h>  
#define MIBUFED 0x401  
struct strioctl  
int  
ioc;  
count; /* number of bytes queued in the buffer */  
ioc.ic_cmd = MIBUFED;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&count;  
ioctl(moxa_fd, I_STR, &ioc);  
Note: Due to the characteristics of STREAMS driver, the returned count of bytes  
buffered only reflect the data buffered on MOXA board, not including the  
data buffered in STREAMS queue. In this case, the count is for reference  
only. For example, returned count may always be zero, but there still are  
data buffered in STREAMS queue.  
2. MOBUFED  
This function let you know the byte count queued in output buffer when this  
function is issued.  
Syntax for SCO UNIX/OpenServer  
#define MOBUFED 0x402  
int  
count; /* number of bytes queued in the output buffer */  
ioctl(moxa_fd, MOBUFED, &count);  
Smartio C168H/HS User’s Manual 4-7  
Syntax for UNIX SVR4.2  
#include  
<sys/stropts.h>  
#include  
<sys/sysmacros.h>  
#define MOBUFED  
struct strioctl  
int  
0x402  
ioc;  
count; /* number of bytes queued in the output  
buffer */  
ioc.ic_cmd = MOBUFED;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&count;  
ioctl(moxa_fd, I_STR, &ioc);  
Note: See MIBUFED for influence of STREAMS driver.  
3. MTCRTS  
This function, only valid when hardware flow control is turned off (see  
MHWFLOW), is used to drive RTS signal on or off.  
Syntax for SCO UNIX/OpenServer  
#define MTCRTS  
#define TurnON  
#define TurnOFF  
0x403  
1
0
ioctl(moxa_fd, MTCRTS, TurnON);  
ioctl(moxa_fd, MTCRTS, TurnOFF);  
Syntax for UNIX SVR4.2  
#include  
<sys/stropts.h>  
#include  
<sys/sysmacros.h>  
#define MTCRTS  
#define TurnON  
#define TurnOFF  
struct strioctl  
int  
0x403  
1
0
ioc;  
setting;  
4-8 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
setting = TurnON /* or TurnOFF */;  
ioc.ic_cmd = MTCRTS;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&setting;  
ioctl(moxa_fd, I_STR, &ioc);  
4. MTCDTR  
This function, only valid when hardware flow control is turned off (see  
MHWFLOW), is used to drive DTR signal on or off.  
Syntax for SCO UNIX/OpenServer  
#define MTCDTR  
#define TurnON  
#define TurnOFF  
0x404  
1
0
ioctl(moxa_fd, MTCDTR, TurnON);  
ioctl(moxa_fd, MTCDTR, TurnOFF);  
Syntax for UNIX SVR4.2  
#include  
<sys/stropts.h>  
#include  
<sys/sysmacros.h>  
#define MTCDTR  
#define TurnON  
#define TurnOFF  
struct strioctl  
int  
0x404  
1
0
ioc;  
setting;  
setting = TurnON /* or TurnOFF */;  
ioc.ic_cmd = MTCDTR;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&setting;  
ioctl(moxa_fd, I_STR, &ioc);  
5. MLOWATER  
Sometimes the application software may not be able to write any further data to the  
output buffer because of the output buffer being full. The application has to wait  
Smartio C168H/HS User’s Manual 4-9  
until the output buffer has 'enough space' again. The criteria to tell if the output  
buffer has 'enough space' is whether the output buffer reached its 'low water' level.  
That is the output buffer will accept further data only when the 'low water' level is reached.  
If the 'low water' value is relatively small, you may find that the output buffer  
become empty before you write another block of data (this is quite possible because  
UNIX is time-sharing multitasking environment). This will result in discontinuous  
data transmission. In a timeout-sensitive application, e.g. facsimile (FAX)  
transmission, discontinuous data may falter the operation.  
The default 'low water' is 512 bytes. You can enlarge it but better not exceed one  
half of the output buffer. Each port's output buffer is 32K bytes.  
Syntax for SCO UNIX/OpenServer  
#define MLOWATER  
int  
0x405  
lowater; /* low water value of output buffer  
(default = 512 bytes) */  
ioctl(moxa_fd, MLOWATER, lowater);  
Syntax for UNIX SVR4.2  
#include  
#include  
#define MLOWATER  
struct strioctl  
<sys/stropts.h>  
<sys/sysmacros.h>  
0x405  
ioc;  
int lowater; /* low water value of output buffer (default = 512 bytes) */  
ioc.ic_cmd = MLOWATER;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&lowater;  
ioctl(moxa_fd, I_STR, &ioc);  
6. MSTATUS  
This function is used to know the RS-232 line status (CTS/DSR/DCD).  
4-10 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Syntax for SCO UNIX/OpenServer  
#define MSTATUS 0x407  
int  
status; /* status = RS-232 line status */  
/* bit0¡ CÐTS (1:on, 0:off) */  
/* bit1¡ DÐSR (1:on, 0:off) */  
/* bit2¡ DÐCD (1:on, 0:off) */  
ioctl(moxa_fd, MSTATUS, &status);  
Syntax for UNIX SVR4.2  
#define MSTATUS 0x407  
#include  
#include  
<sys/stropts.h>  
<sys/sysmacros.h>  
struct strioctl  
int  
ioc;  
status; /* status = RS-232 line status */  
/* bit0¡ CÐTS (1:on, 0:off) */  
/* bit1¡ DÐSR (1:on, 0:off) */  
/* bit2¡ DÐCD (1:on, 0:off) */  
ioc.ic_cmd = MSTATUS;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&status;  
ioctl(moxa_fd, I_STR, &ioc);  
7. MHWFLOW  
This function is used to enable/disable hardware flow control. The first open()  
function of a port will set the hardware flow control bits on or off depending on the  
[RTS/CTS Hardware Flow Control] configuration in mxadm. However, users  
might want to control the DTR or RTS signal on their will, thus the RTS flow  
control bit should be turned off (HWFLowControlOff) in order to take over the  
control of DTR or RTS signal via function MTCRTS or MTCDTR. MTCRTS and  
MTCDTR can be effective only after the RTS flow control bit of MHWFLOW is  
turned off.  
Smartio C168H/HS User’s Manual 4-11  
Syntax for SCO UNIX/OpenServer  
#define MHWFLOW  
#define HWFlowControlOff  
0x40e  
0x00  
#define CTSFlowControlBitOn 0x01  
#define RTSFlowControlBitOn 0x02  
#define HWFlowControlOn  
0x03  
ioctl(moxa_fd, MHWFLOW, CTSFlowControlBitOn);  
ioctl(moxa_fd, MHWFLOW, RTSFlowControlBitOn);  
ioctl(moxa_fd,MHWFLOW, CTSFlowControlBitOn | RTSFlowControlBitOn);  
Syntax for UNIX SVR4.2  
#include  
#include  
<sys/stropts.h>  
<sys/sysmacros.h>  
#define MHWFLOW  
#define HWFlowControlOff  
0x40e  
0x00  
#define CTSFlowControlBitOn 0x01  
#define RTSFlowControlBitOn 0x02  
#define HWFlowControlOn  
struct strioctl  
0x03  
ioc;  
int  
setting;  
setting = CTSFlowControlbitOn;  
ioc.ic_cmd = MHWFLOW;  
ioc.ic_timout = 0;  
ioc.ic_len = sizeof(int);  
ioc.ic_dp = (char *)&setting;  
ioctl(moxa_fd, I_STR, &ioc);  
4-12 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Utilities  
You can use the administration utility, moxaadm, to monitor port activity and to  
do terminal emulation, which are details as follows.  
Port Monitoring  
This utility gives you a quick view about all the MOXA ports' activities. You can  
easily learn each port's total received/transmitted (Rx/Tx) character count since the  
time when the monitoring is started. Rx/Tx throughputs per second are also reported  
in interval basis (e.g. the last 5 seconds) and in average basis (since the time the  
monitoring is started). You can reset all ports' count by <HOME> key. <+> <->  
(plus/minus) keys to change the displaying time interval.  
Press Enter on the port, that cursor stay, to view the port's communication  
parameters, signal status, and input/output queue.  
Smartio C168H/HS User’s Manual 4-13  
Terminal Emulator  
This utility provides data sending and receiving ability of all tty ports, especially for  
MOXA ports. It is quite useful for testing simple application, for example, sending AT  
command to a modem connected to the port or used as a terminal for login purpose.  
Note that this is only a dumb terminal emulation without handling full screen operation.  
Besides, data scope function with pattern/file transfer is provided.  
1. Select and Press Enter on item “Communication Setup” to setup up all the  
communication parameters for connection.  
4-14 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
2. Select and enter “Dumb Terminal” to enter terminal emulation. Or select and  
enter “Advance Transfer Modes” to perform pattern or file transfer with  
protocols such as ZModem.  
DOS  
Installation  
API-232 Library is the professional serial programming tool for DOS. It is installed  
automatically along with the MOXA DOS drivers. The installation is detailed in  
Chapter “Software Installation”.  
DOS API-232 Library  
DOS API-232 library supports languages like Microsoft C, Turbo C, Macro  
Assembly, QuickBasic, Turbo Pascal, Clipper, etc. Sample programs for each  
supported language are included, and placed in the sub-directory ..\EXAMPLE\%  
language of the API-232 directory.  
In addition, for DOS C language only, there are also Modem Control and File  
Transfer library available, supporting Hayes compatible modem control as well as  
ASCII, KERMIT, XMODEM, YMODEM and ZMODEM file transfer protocol  
functions.  
For complete API-232 function description, please see file API-232.TXT in the  
API-232 directory for more details.  
Smartio C168H/HS User’s Manual 4-15  
Utilities  
There are two utilities available for DOS: Data Scope and Diagnose, which are  
detailed below.  
Data Scope  
The Data Scope, BIN\SCOPE.EXE, is a suite of utility programs that can help  
users with system troubleshooting and serial communication debugging.  
There are three major functions in Data Scope utility:  
1. The Data Scope utility offers transparent monitoring of serial communication lines  
and allows data to be streamed to disk storage for later analysis.  
2. The TTY terminal emulation utility allows user to view the signal status and  
transfer data interactively or files using ASCII, XMODEM, YMODEM,  
ZMODEM and KERMIT protocols.  
3. The Diagnostic test utility provides port connection test with two MOXA ports  
connected via a properly wired cable.  
4-16 Smartio C168H/HS User’s Manual  
Serial Programming Tools  
Please see on-line help as running BIN\SCOPE.EXE for more usage and capability  
information.  
Diagnose  
The Diagnose, BIN\DIAGNOSE.EXE, is a utility that can help users to diagnose  
the hardware condition of each port of the selected board. See on-line help for more  
details.  
Before executing it, please remove the Moxa driver in advance via executing “Mx-  
drv/Q” if the Moxa driver is running in the background.  
RS-485 Programming for Opt8J  
If you intend to do RS-485 communication with Opt8J, please follow the RS-485  
programming guide below and also refer to Chapter “Connection Option (Opt8x)  
and Cable Wiring” for more Opt8J RS-485 operation details.  
The Opt8J supports only 2-wire half-duplex RS-485 communication. Data+/- pins  
are served for both data transmitting and receiving, depending on the RTS signal.  
The port switch of each port should be set to On position. The port is for  
transmitting data if RTS is asserted and for receiving data if RTS is not asserted.  
RTS scheme is suitable for any system, including Windows NT and Windows 95/98,  
DOS, or UNIX, that permits RTS control from application programs.  
Smartio C168H/HS User’s Manual 4-17  
There are 2 solutions to control RS-485 2-wire transmission.  
Solution 1  
The following model is common in RS-485 2-wire transmission.  
sio_SetWriteTimeouts(port, 0); /* Set sio_write() into block mode if  
for Windows NT and Windows 95/98 */  
sio_RTS(port, 1);  
/* Turn on RTS signal. The RS-485  
port is ready for transmitting data. */  
/* Write 10 byte characters in "buff".  
The function blocks until last  
character transmitted */  
sio_write(port, buff, 10);  
sio_RTS(port, 0);  
/* Turn off RTS signal. The RS-485  
port is ready for receiving data. */  
/* Read 10 bytes */  
sio_read(port, buff, 10);  
Solution 2  
There is a dedicated RS-485 function in PComm or API-232 library. It  
integrates the above functions of solution 1 regarding sending data as one.  
sio_putb_x(port, buff, tick ); /*  
1. Turn on RTS and ready for  
transmitting data.  
2. Send data.  
3. Wait for tick time.  
4. Turn off RTS and ready for  
receiving data. */  
For more information on these functions, please refer to PComm library on-line Help  
file for Windows NT and Windows 95/98 or API-232.txt file for DOS, respectively  
.
4-18 Smartio C168H/HS User’s Manual  
5
5 Connection Option (Opt8x) and Cable Wiring  
In serial data communications, the term DTE is for Data Terminal Equipment like  
PC COM1/2, serial printer and terminal. The term DCE is for Data Communication  
Equipment like modem.  
RS-232 Cable Wiring for Opt8A/B/C/D/S  
RS-232 8-port connection boxes/octopus cable designed for Smatio C168 Series are:  
Opt8A: 8-port RS-232 DB25 female connection box  
Opt8B: 8-port RS-232 DB25 male connection box  
Opt8C: Octopus cable with 8 male RS-232 DB25 ports  
Opt8D: Octopus cable with 8 male RS-232 DB9 ports  
Opt8S: 8-port RS-232 DB25 surge protected female connection box  
Smartio C168H/HS User’s Manual 5-1  
The followings are pin assignments for various connection options:  
Opt8A/S  
(DCE, DB25 Female)  
2
3
4
5
6
7
8
RxD  
TxD  
CTS  
RTS  
DTR  
GND  
DCD  
20 DSR  
Opt8B/C  
(DTE, DB25 Male)  
2
3
4
5
6
7
8
TxD  
RxD  
RTS  
CTS  
DSR  
GND  
DCD  
20 DTR  
Opt8D  
(DTE, DB9 Male)  
1
2
3
4
5
6
7
8
DCD  
RxD  
TxD  
DTR  
GND  
DSR  
RTS  
CTS  
5-2 Smartio C168H/HS User’s Manual  
Connection Option (Opt8x) and Cable Wiring  
Type 1: To connect Sma rtio C168 Series to a DTE device.  
Straight-through Cable  
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8A/S  
Opt8A/S  
DB25 Female  
DTE Device  
DB25 Male  
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
2
3
4
5
6
20  
7
2
3
4
5
6
20  
7
TxD  
RxD  
RTS  
CTS  
DSR  
DTR  
GND  
DCD  
8
8
Null Modem Cable  
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8B/C  
Opt8B/C  
DB25 Male  
DTE Device  
DB25 Male  
TxD  
RxD  
RTS  
CTS  
DSR  
DTR  
GND  
DCD  
2
3
4
5
6
20  
7
2
3
4
5
6
20  
7
TxD  
RxD  
RTS  
CTS  
DSR  
DTR  
GND  
DCD  
8
8
Smartio C168H/HS User’s Manual 5-3  
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8D  
Opt8D  
DB9 Male  
DTE Device  
DB25 Male  
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
2
3
8
7
4
6
5
1
2
3
4
5
6
20  
7
TxD  
RxD  
RTS  
CTS  
DSR  
DTR  
GND  
DCD  
8
Type 2: To connect Sma rtio C168 Series to a DCE device.  
Null Modem Cable  
Modem,  
or any DCE Device  
Opt8A/S  
Opt8A/S  
DB25 Female  
DCE Device  
DB25 Female  
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
2
3
4
5
6
20  
7
2
3
4
5
6
20  
7
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
8
8
5-4 Smartio C168H/HS User’s Manual  
Connection Option (Opt8x) and Cable Wiring  
Straight-through Cable  
Modem,  
or any DCE Device  
Opt8B/C  
Opt8B/C  
DB25 Male  
DCE Device  
DB25 Female  
TxD  
RxD  
RTS  
CTS  
DSR  
DTR  
GND  
DCD  
2
3
4
5
6
20  
7
2
3
4
5
6
20  
7
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
8
8
Modem  
or any DCE Device  
Opt8D  
Opt8D  
DB9 Male  
DCE Device  
DB25 Female  
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
2
3
8
7
4
6
5
1
2
3
4
5
6
20  
7
8
RxD  
TxD  
CTS  
RTS  
DTR  
DSR  
GND  
DCD  
Smartio C168H/HS User’s Manual 5-5  
Type 3: To connect Sma rtio C168 Series to a DTE with 3-pin wiring.  
If the “Hardware flow control” feature is set to “ON”, you must loop  
back (or short) the RTS with CTS and DSR with DTR, DCD on MOXA  
site, indicated in dash-lines of the following diagrams. If the “Hardware  
flow control” feature is set to “OFF”, you could just leave RTS, CTS,  
DSR, DTR, DCD open, ignoring the connection indicated in dash-lines.  
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8A/S  
Opt8A/S  
DB25 Female  
DTE Device  
DB25 Male  
RxD  
TxD  
GND  
RTS  
CTS  
DTR  
DST  
DCD  
2
3
7
5
4
20  
6
2
3
7
4
5
6
20  
8
TxD  
RxD  
GND  
RTS  
CTS  
DTR  
DSR  
DCD  
8
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8B/C  
Opt8B/C  
DB25 Male  
DTE Device  
DB25 Male  
TxD  
RxD  
GND  
RTS  
CTS  
DSR  
DTR  
DCD  
2
3
7
4
5
6
20  
8
2
3
7
4
5
6
20  
8
TxD  
RxD  
GND  
RTS  
CTS  
DTR  
DSR  
DCD  
5-6 Smartio C168H/HS User’s Manual  
Connection Option (Opt8x) and Cable Wiring  
PC COM2 port, Serial Printer,  
Terminal, or any DTE Device  
Opt8D  
Opt8D  
DB9 Male  
DTE Device  
DB25 Male  
RxD  
TxD  
GND  
RTS  
CTS  
DTR  
DSR  
DCD  
2
3
5
7
8
4
6
1
2
3
7
4
5
6
20  
8
TxD  
RxD  
GND  
RTS  
CTS  
DTR  
DSR  
DCD  
RS-422 Cable Wiring for Opt8J/F/Z  
RS-422 connection boxes designed for Smartio C168 Series are:  
Opt8J: Connection box with 8 female RS-422/485 DB25 ports. Set the port  
switch to OFF position (RS-422) for the desired port(s).  
Opt8F: Connection box with 8 female RS-422 DB25 ports and Max. 500V DC  
isolation protection which prevents damage caused by high potential  
voltage.  
Opt8Z: Connection box with 8 female RS-422 DB25 ports but without isolation  
protection.  
Smartio C168H/HS User’s Manual 5-7  
RS-422 Pinouts for Opt8J/F/Z:  
Opt8J/F/Z  
2
3
RxD+(B)  
TxD+(B)  
14 RxD-(A)  
16 TxD-(A)  
7
4
5
GND  
CTS+(B)  
RTS+(B)  
13 RTS-(A) Opt8J only  
19 CTS-(A)  
The RS-422 transmission distance can reach as long as 4000ft. The connection box  
needs an external power adapter to supply 5V DC power. Either 110V or 220V AC  
power adapter is selectable.  
5-8 Smartio C168H/HS User’s Manual  
Connection Option (Opt8x) and Cable Wiring  
The followings are operation modes for RS-422:  
RS-422 Point-to-point  
RS-422 Broadcasting  
Opt8J/F/Z  
TxD+(B)  
16 TxD-(A)  
RxD+(B)  
14 RxD-(A)  
GND  
RS-422 Device  
Opt8J/F/Z  
RS-422 Device 1  
RxD+(B)  
TxD+(B)  
RxD-(A)  
TxD-(A)  
GND  
3
RxD+(B)  
RxD-(A)  
TxD+(B)  
TxD-(A)  
GND  
3
2
TxD+(B)  
RxD+(B)  
2
16 TxD-(A)  
14 RxD-(A)  
7
7
GND  
RS-422 Device N  
RxD+(B)  
TxD+(B)  
RxD-(A)  
TxD-(A)  
GND  
Opt8J RS-422 with Handshaking  
Opt8J  
TxD+(B)  
16 TxD-(A)  
RxD+(B)  
14 RxD-(A)  
RS-422 Device  
RxD+(B)  
RxD-(A)  
TxD+(B)  
TxD-(A)  
GND  
CTS+(B)  
CTS-(A)  
RTS+(B)  
RTS-(A)  
3
2
7
5
GND  
RTS+(B)  
13 RTS-(A)  
CTS+(B)  
19 CTS-(A)  
4
Smartio C168H/HS User’s Manual 5-9  
RS-485 Cable Wiring for Opt8J  
One RS-485 connection box designed for Smartio C168 Series is:  
Opt8J: Connection box with 8 female RS-422/485 DB25 ports. Set the port  
switch to ON position (RS-485) for the desired port(s).  
The Opt8J supports only 2-wire half-duplex RS-485 communication. Data+/- pins  
are served for both data transmitting and receiving, depending on the RTS signal.  
RS-485 Pinouts for Opt8J:  
Opt8J  
3
7
Data+(B)  
GND  
7 GND  
16  
Data-(A)  
Data-(A) 16  
3 Data+ (B)  
Multidrop RS-485 Half-duplex  
Point-to-Point RS-485 Half-duplex  
Opt8J RS-485 Device  
Opt8J  
RS-485 Device 1  
Master  
Slave  
3 Data+(B)  
16 Data-(A)  
7 GND  
Data+(B)  
Data-(A)  
GND  
3
Data+(B)  
Data+(B)  
Data-(A)  
GND  
16 Data-(A)  
7
GND  
RS-485 Device N  
Slave  
Data+(B)  
Data-(A)  
GND  
See Section “RS-485 Programming” of Chapter “Serial Programming Tools” for  
more Opt8J RS-485 programming details.  
5-10 Smartio C168H/HS User’s Manual  
Connection Option (Opt8x) and Cable Wiring  
RS-422/485 Impedance Matching  
For RS-422/485 serial communications, when an electrical signal travels through  
two different resistance junctions in a transmission line, the impedance mismatch  
will sometimes cause signal reflection. Signal reflection causes signal distortion,  
which in turn will contribute communication errors. The solution to this problem is  
to establish the same impedance at the line ends as in the line itself by terminating  
them with resistors.  
The value of the termination resistor should equal the characteristic impedance of  
the transmission line. The resistors should be added near the receiving side.  
Opt8J/F/Z  
RS-422/485 Device  
3
16  
2
14  
5
13  
4
TxD+(B)  
RxD+(B)  
RxD-(A)  
TxD+(B)  
TxD-(A)  
CTS+(B)  
CTS-(A)  
RTS+(B)  
RTS-(A)  
TxD-(A)  
RxD+(B)  
RxD-(A)  
RTS+(B)  
RTS-(A)  
CTS+(B)  
CTS-(A)  
Opt8J only  
19  
Note:  
1.  
Stands for termination resistor near the receiving side  
2. The suggested termination resistor for AWG #26 cable is 100 ohm.  
3. The suggested termination resistor for phone cable is 600 ohm.  
Smartio C168H/HS User’s Manual 5-11  
5-12 Smartio C168H/HS User’s Manual  
6
6 Troubleshooting  
Common Smartio C168 Series problems and possible solutions are listed below. If  
you still have problems, contact your dealer or Moxa for help. Or use the “Problem  
Report Form” at the end of this manual to report problems to your dealer at once  
for faster technical support.  
General Troubleshooting  
1. The MOXA driver, while installing the driver, cannot detect the MOXA  
board.  
Hardware causes and solutions:  
a. The board is not installed or missing (absent). Please install it.  
b. The board is not properly plugged in the system. If that is the case, re-install  
the board and make sure that it fits well in a 16-bit slot this time. Sometimes  
the slot for plugging the board is bad. In this case, try other slots until you  
find a good one.  
2. The MOXA board and driver are activated but cannot transfer  
(transmit/receive) data.  
Hardware Causes and Solutions:  
a. Check for wrong cable wiring. Refer to the “Connection Cable and Cable  
Wiring” chapter for precise pin outs of the connector type you are using.  
b. The cable or the board is defective. You may use other ports, cables or boards  
to verify. In addition, the PComm “Diagnostic” utility for Windows NT and  
Windows 95/98 is good for testing MOXA boards and port conditions. If  
Diagnostic reports error, replace the faulty components.  
Smartio C168H/HS User’s Manual 6-1  
Software Causes and Solutions:  
a. Smartio C168 Series checks the line status (CTS) before it sends data out if  
the RTS/CTS flow control feature is set to “Enable” in the configuration or  
application program. Please refer to the “Connection Cable and Cable  
Wiring” chapter for proper wiring. Check the line status of the suspected  
port using the diagnostic LED indicators on the mini tester.  
b. Perhaps the application controlling the board is not correctly written  
according to the corresponding API of the operating system. To verify,  
please run an existing and known good application or the provided utilities  
by Moxa. For example, under Windows NT and Windows 95/98, Pcomm  
“Terminal emulator” or “HyperTerminal” utilities are good for testing the  
COM ports.  
3. Why the DOS utility IQ-IRQ can not access Sma rtio C168 Series to  
configure?  
There are several reasons that may lead to this trouble:  
a. The user forgets or does not know the Configuration Access Port (CAP) of  
the board. See next problem 4 for how to solve this problem.  
b. The CAP of the board conflicts with other add-on boards’ I/O address.  
Please change other add-on boards’ I/O address to avoid the conflict.  
c. The Smartio C168 Series board is not plugged in a right or good slot. Please  
plug the board in a good 16-bit ISA slot.  
d. The Smartio C168 Series board may malfunction. Please return for repair.  
If any existing board has the same I/O address as 0x180, the default CAP  
address, or the 1st port's I/O address, you must try to avoid the conflict by doing  
either one the following.  
a. Install a jumper (short) at position JP1 on the upper-left corner of the board.  
This will force the CAP address to 0xA700.  
b. Change or disable the existing board's I/O address.  
4. What to do if user forgets or does not know the Configuration Access Port  
(CAP) address of Sma rtio C168 Series?  
The Smartio C168 Series multiport boards are designed without jumper or  
switch, so the configuration is completed only by DOS utility Io-irq.exe.  
6-2 Smartio C168H/HS User’s Manual  
Troubleshooting  
To configure the board, you need to know the board’s Configuration Access Port  
(CAP) address. Because the CAP address is the only channel, via which the Io-  
irq.exe can access to the board.  
The following procedure instructs user to recover once the CAP is unknown.  
Step 1.  
Step 2.  
Power off the PC.  
OFF  
Install jumper onto the JP1 of the board.  
Install  
jumper  
JP1  
Step 3.  
Power on the PC.  
Now the CAP address of the board will  
be 0xA700.  
ON  
Step 4.  
Step 5.  
Step 6.  
Step 7.  
Execute Io-irq under DOS environment.  
A:> Io-irq  
Enter CAP address 0xA700 to access the board.  
Enter the “Configuration Access Port” in HEX: A700  
The previous hardware configuration will be shown.  
Modify them if necessary. Remember the CAP address this time.  
Exit the IO-IRQ.  
Smartio C168H/HS User’s Manual 6-3  
Step 8.  
Step 9.  
Power off the PC.  
OFF  
Remove the jumper on position JP1.  
Remove  
jumper  
JP1  
Step 10.  
Power on the PC.  
ON  
Windows NT  
This section is specific for troubleshooting under Windows NT. For general  
problems and solutions, please see the previous section, “General Troubleshooting”.  
1. After the system reboots, the error message “Another driver in the system,  
which did not report its resources, has already claimed the interrupt used  
by xxx.” appears in the Event Log.  
This indicates that the MOXA board is found, but the IRQ is conflicting with  
another adapter. Please make sure there is no conflict with other adapter’s IRQ.  
Check the BIOS IRQ settings first. Make sure that an IRQ is available.  
2. After the system reboots, the error message “Cannot find any configured  
MOXA Smartio/Industio Series board!” appears in the Event Log.  
6-4 Smartio C168H/HS User’s Manual  
Troubleshooting  
a. Some partial decoded network board may interfere with our board. Please  
avoid from using 0x300 as I/O address for those network boards.  
b. Check hardware configuration of Smartio C168 Series board by IO-  
IRQ.EXE. Then make sure the hardware configuration, including I/O  
addresses for each port, Interrupt Vector, IRQ, is identical to that of the  
driver.  
c. The I/O addresses may conflict with other devices, please change another set  
of I/O address such as I/O:0x280, Interrupt Vector:0x2C0.  
d. The board(s) is not plugged properly. Please make sure the board is seated  
firmly in the expansion slot.  
e. The slot for plugging the board is defective.  
In this case, please try other slots until you find a good one.  
f. The board might be defective.  
3. The COM number of the Sma rtio C168 Series conflicts with others.  
The COM numbers of different boards happen to be the same. Try to change the  
COM number mappings.  
4. Windows NT system panic (blue screen).  
The possible reason is an IRQ or memory conflict with other ISA Bus adapters,  
like LAN and SCSI boards, or the system BIOS. Please refer to the  
corresponding problem in the previous section, “General Troubleshooting”, for  
solutions.  
Windows 95/98  
This section is specific for troubleshooting under Windows 95/98. For general  
problems and solutions, please see the previous section, “General Troubleshooting”.  
1. The system fails to find the Sma rtio C168 Series board! After system  
reboots, error message “Smartio C168 Series (CAP=0x0180, port 1=COM3):  
Board is not found” appears.  
a. Some partial decoded network board may interfere with our board. Please  
avoid from using 0x300 as I/O address for those network boards.  
b. Check hardware configuration of Smartio C168 Series board by IO-  
IRQ.EXE. Then make sure the hardware configuration, including I/O  
Smartio C168H/HS User’s Manual 6-5  
addresses for each port, Interrupt Vector, IRQ, is identical to that of the driver.  
c. The I/O addresses may conflict with other devices, please change another set  
of I/O address such as I/O:0x280, Interrupt Vector:0x2C0.  
d. The board(s) is not plugged properly. Please make sure the board is seated  
firmly in the expansion slot.  
e. The slot for plugging the board is defective.  
In this case, please try other slots until you find a good one.  
f. The board might be defective.  
DOS  
This section is specific for troubleshooting under DOS. For general problems and  
solutions, please see the previous section, “General Troubleshooting”.  
1. After executing SER-DRV.EXE, error message “None serial port found!”  
appears.  
a. Make sure you’re using the right driver.  
b. Check if the board is properly plugged into ISA/EISA bus slot.  
c. Check if the I/O address and IRQ settings in SETUP program are same as  
the settings on board.  
UNIX  
This section is specific for troubleshooting under UNIX. For general problems and  
solutions, please see the previous section, “General Troubleshooting”.  
1. Under UNIX, when respawning quite a few number of tty ports, the  
following error messages appear: “Time out table overflow”, “File table  
overflow”, “Region table overflow”.  
Software Cause and Solution:  
The above error messages imply that the system resources are exhausted. You  
should tune the kernel parameters to a larger value and rebuild the kernel to be able  
to accommodate the new configuration. Refer to UNIX system manual about how  
to tune the parameters and rebuild kernel.  
6-6 Smartio C168H/HS User’s Manual  
Troubleshooting  
“Time out table overflow”:  
“File table overflow”:  
NCALL parameter too small.  
NFILE or NINODE parameter too small.  
NREGION or NPROC parameter too small.  
“Region table overflow”  
:
2. Under UNIXs, the newly rebuilt kernel could not boot.  
Software Causes and Solutions:  
The C168 driver might not be built into the new kernel correctly.  
a. Please use the last good kernel backup to boot again. The kernel backup in SCO  
UNIX is /unix.moxa while in UNIX SVR4.2 /stand/unix.moxa.  
b. Then remove the C168 driver. Refer.  
c. Re-install the C168 driver once more.  
Smartio C168H/HS User’s Manual 6-7  
6-8 Smartio C168H/HS User’s Manual  
Appendix  
A Technical Reference  
Specifications  
v
v
v
v
v
v
v
v
v
v
v
Bus interface:  
ISA (EISA compatible)  
8
0x0000 ~ 0xFFFF  
2, 3, 4, 5, 7, 10, 11, 12, 15  
5, 6, 7, 8  
Number of ports:  
I/O address:  
IRQ:  
Data bits:  
Stop bits:  
Parity:  
UART:  
Speed (bps):  
Connectors:  
Data signals:  
1, 1.5, 2  
none, even, odd, space, mark  
8¡ 1Ñ6550C or compatible  
50 ~ 921.6K  
8¡ DÑB25 male or female  
RS-232¡ TÐxD, RxD, RTS, CTS, DTR, DSR, DCD, GND  
RS-422¡ TÐxD+(B), TxD-(A), RxD+(B), RxD-(A), GND  
(Opt8J: RTS+(B), RTS-(A), CTS+(B), CTS-(A))  
RS-485¡ DÐata+(B), Data-(A), GND  
max. 2000V (C168HS)  
v
v
v
Surge protection:  
Operating temp:  
0 ~ 55 ¢ J  
Power requirement: 180mA max. (+5V), 110mA max. (+12V), 160mA, max. (-12V)  
v
v
Dimensions:  
157mm¡ 9Ñ3mm  
Operating Systems: See the driver support list below.  
Smartio C168H/HS User’s Manual A-1  
Smartio C168 Series  
Windows NT  
Windows 95/98  
DOS  
3
3
3
SCO UNIX/OpenServer  
UNIX SVR4.2  
Linux  
SCO XENIX  
QNX  
3
3
R
C
C
C
FreeBSD  
3 : Driver supported by Moxa and shipped with product  
C : Driver supported by OS  
R : Available by request  
Note: Download the newest drivers from the MOXA FTP service  
UART 16C550C  
The UART chip, 16C550C, is an intelligent asynchronous controller capable of  
supporting one full duplex channel that simultaneously transfers data at 921.6 Kbps.  
To increase the overall data throughput, special features such as on-chip FIFO and  
on-chip hardware flow control are used to reduce the number of interrupts to the  
onboard CPU and to prevent any loss of valuable data.  
A-2 Smartio C168H/HS User’s Manual  
Troubleshooting  
PC I/O Port Address Map  
The following is the list of the I/O port addresses commonly used, which is good for  
preventing I/O address conflict when configuring Smartio C168 Series.  
IO/ Address  
000-01F  
020-03F  
040-05F  
060-06F  
070-07F  
080-09F  
0A0-0BF  
0C0-0DF  
0F0-0FF  
100-1EF  
1F0-1F8  
200-207  
278-27F  
2F8-2FF  
300-31F  
360-36F  
378-37F  
3B0-3BF  
3C0-3CF  
3D0-3DF  
3F0-3F7  
3F8-3FF  
Device  
DMA controller 1  
interrupt controller  
Timer  
Keyboard  
Real-time clock  
DMA page register  
Interrupt controller 2  
DMA controller  
Math coprocessor  
not usable  
Fixed disk  
Game I/O  
Parallel printer port 2 ( LP2: )  
Serial Port 2 ( COM2: )  
Prototype card  
Reserved  
Parallel printer port 1 ( LP1: )  
Monochrome display  
Reserved  
Color graphics display  
Diskette controller  
Serial port 1 ( COM 1: )  
Smartio C168H/HS User’s Manual A-3  
DB62 Connector Pinouts  
The following lists the pin assignments of the DB62 connector on the bracket.  
Pin no.  
Signal  
Pin no.  
Signal  
Pin no.  
Signal  
1
2
TxD1  
DTR1  
22  
23  
24  
25  
26  
RxD1  
DSR1  
DCD1  
TxD2  
DTR2  
43  
44  
45  
46  
47  
CTS1  
RTS1  
GND  
CTS2  
RTS2  
3
4
5
6
7
RxD2  
DSR2  
DCD2  
TxD3  
DTR3  
27  
28  
29  
30  
31  
32  
33  
34  
RxD3  
DSR3  
DCD3  
TxD4  
DTR4  
GND  
48  
49  
50  
51  
52  
CTS3  
RTS3  
GND  
CTS4  
RTS4  
8
9
RxD4  
DSR4  
DCD4  
RxD5  
DSR5  
DCD5  
TxD6  
DTR6  
10  
11  
12  
13  
14  
15  
TxD5  
DTR5  
53  
54  
55  
56  
57  
58  
59  
60  
CTS5  
RTS5  
GND  
CTS6  
RTS6  
GND  
CTS7  
RTS7  
35  
36  
37  
38  
39  
40  
41  
42  
RxD6  
DSR6  
DCD6  
TxD7  
DTR7  
GND  
16  
17  
18  
19  
20  
21  
RxD7  
DSR7  
DCD7  
RxD8  
DSR8  
DCD8  
TxD8  
DTR8  
61  
62  
CTS8  
RTS8  
A-4 Smartio C168H/HS User’s Manual  
Problem Report Form  
Smartio C168 Series  
Customer name:  
Company:  
Tel:  
Fax:  
Email:  
Date:  
1. Moxa Product: Smartio C168 Series Model : oC168H oC168HS Serial Number: ___________  
2. Moxa Driver Version: ________________  
3. Moxa hardware settings:  
3.1 Please check the hardware configuration by IO-IRQ.EXE from DOS or Windows 95/98 DOS  
Prompt.  
PORT  
I/O  
1
2
3
4
5
6
7
8
IRQ  
Interrupt Vector: ________  
Speed: ________________(High/Normal)  
3.2 Jumper JP1 on the board: o open o short  
4. Operating System: o Windows 95  
o
o
o
Windows 98  
Windows NT 4.0  
UNIX  
o
o
Windows NT 3.51  
DOS  
o
Others  
5. PC Host: Make _________ Model _________  
6. CPU:  
7. BIOS:  
Speed _____MHz Make ______ Model ______  
Make __________________ Version _______  
8. Problem Description: Please describes the problem as clearly as possible, including the error message  
you see. We may have to follow your description to reproduce the problem.  
o
o
o
Board not found.  
Can transfer data, but lose data.  
Others. Detailed error message description is recommended:  
o
o
Board found, but can’t transfer data.  
Can transfer data, but with garbled data.  
Return Procedure  
For product repair, exchange or refund, you must:  
v Provide evidence of original purchase  
v Fill out the Problem Report Form (PRF) as detailed as possible for shorter product repair time.  
v Obtain a Return Merchandise Authorization (RMA) number from the sales representative or dealer  
v Carefully pack the product in anti-static package, and send it, pre-paid, to the dealer. The RMA  
number should show on the outside of the package, and include a description of the problem along  
with the return address and telephone number of a technical contact.  

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