Western Telematic Switch APS 8 User Manual

APS Series  
Asynchronous Port Switches  
Firmware Version 2.05 and Higher  
Models APS-16, APS-8 and APS-4  
User's Guide  
5 Sterling  
Irvine  
California 92618  
(949) 586-9950  
Fax: (949) 583-9514  
Toll Free: 1-800-854-7226  
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Rack Mount Installation  
When installing this device in an instrument rack, the following factors must be accounted for:  
1. Enclosed Racks: Enclosed racks must provide adequate ventilation. Make certain that  
the rack is not overly crowded and note that each unit in the rack generates its own heat.  
An enclosed rack should have louvered sides and a fan to circulate cooling air. The  
maximum temperature for the equipment in this environment is 45° C.  
When mounting the unit in an enclosed rack with a ventilation fan at the top of the rack,  
note that excessive heat generated by devices at the bottom of the rack can be drawn  
upward and into the ventilation slots of units located at the top. Make certain to provide  
adequate ventilation for equipment installed at the bottom of the rack.  
2. Open Racks: Make certain that the rack frame does not block the ventilation slots on the  
instrument cover. If the device is installed on sliders, check the unit when seated all the  
way into the rack to make certain that ventilation slots are not blocked.  
Ventilation  
Slots in the instrument cover are provided to allow ventilation for heat dissipation. To ensure  
safe, reliable operation, these openings must not be covered or blocked.  
Disconnect Power  
If any of the following events are noted, immediately disconnect the unit from the outlet and  
contact qualified service personnel:  
1. If the power cord becomes frayed or damaged.  
2. If liquid has been spilled into the device or if the device has been exposed to rain or  
water.  
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Table of Contents  
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
2. Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.1. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.2. Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
3. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.1. Communication Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.2. Apply Power to the APS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.3. System SetUp Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
3.4. Connecting your PC to the APS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
3.5. Communicating with the APS Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
4. Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1. Connecting Power to the APS Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1.1. AC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1.2. DC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.2. Configure SetUp Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
4.2.1. Default Baud Rate (Sw1, Sw2, Sw3) . . . . . . . . . . . . . . . . . . . . . . . 4-2  
4.2.2. Default Handshake (Sw4, Sw5) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3  
4.2.3. Default Response Message Format (Sw6) . . . . . . . . . . . . . . . . . . . . 4-3  
4.2.4. Default Command Echo (Sw7) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3  
4.3. Initialize Unit to Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4  
4.4. Connecting Devices to the APS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4  
4.5. Application Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5  
5. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.1. Access to the APS Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.2. System SetUp Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.3. Password Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.3.1. The Supervisor Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
5.3.2. The Port Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
5.4. Defining the Site ID and Supervisor Password . . . . . . . . . . . . . . . . . . . . . . 5-3  
5.5. Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4  
5.5.1. Configuration Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4  
5.5.2. Port Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4  
5.5.3. RS232 Port Configuration Menus. . . . . . . . . . . . . . . . . . . . . . . . . 5-5  
5.6. Copying Parameters to All Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9  
5.7. Save User Selected Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10  
6. The Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
6.1. The Port Status Screen (/S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
6.2. The Port Diagnostics Screen (/SD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2  
6.3. The Port Parameters Screens (/W). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4  
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7. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.1. Any-to-Any Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.1.1. Port Connection and Disconnection . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.1.1.1. Connecting Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.1.1.2. Disconnecting Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2  
7.1.2. Defining Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3  
7.2. Passive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4  
7.3. Buffer Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4  
7.3.1. Reading Data from Buffer Mode Ports . . . . . . . . . . . . . . . . . . . . . . 7-5  
7.3.2. Port Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5  
7.4. Modem Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6  
8. Saving and Restoring Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . 8-1  
8.1. Sending Parameters to a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1  
8.2. Restoring Saved Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2  
9. Command Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1  
9.1. Command Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1  
9.2. Command Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2  
9.3. Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3  
9.4. Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4  
Appendices:  
A. RS232 Port Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1  
B. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-2  
C. Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-3  
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1  
List of Figures  
2.1. Instrument Front Panel (Model APS-16 Shown) . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.2. Instrument Back Panel (Model APS-16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
2.3. Instrument Back Panel (Model APS-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
2.4. Instrument Back Panel (Model APS-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
3.1. The Supervisor Level Help Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3  
3.2. The Port Status Screen (Model APS-16; Defaults Shown). . . . . . . . . . . . . . . . . . 3-4  
4.1. Terminal Block Assembly (DC Units Only) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.2. APS Application Example (Model APS-16 Shown) . . . . . . . . . . . . . . . . . . . . . 4-5  
5.1. Port Configuration Menu (Port 2 Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5  
5.2. Port Parameters Menu (Modem Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7  
5.3. The Copy Port Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9  
6.1. The Port Status Screen (Supervisor Mode, APS-16 Shown) . . . . . . . . . . . . . . . . . 6-1  
6.2. The Port Diagnostics Screen (APS-16 Shown) . . . . . . . . . . . . . . . . . . . . . . . . 6-2  
6.3. The Port Parameters Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4  
A.1. RS232 Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1  
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1. Introduction  
WTI’s APS-16, APS-8, and APS-4 Asynchronous Port Switches allow reliable, high-speed  
connections between PCs, modems, and other devices using dissimilar baud rates, parity, and  
flow control. The APS supports communication at speeds up to 115.2 Kbps, and features full  
RTS/CTS hardware handshaking. Lightening-swift data throughput and full flow control make  
the APS the perfect data switch for today’s high speed communications applications.  
Versatile Connectivity  
Up to 16 different devices can be connected to the APS without the need to select a common  
baud rate or parity. Each port can be individually configured for specific baud rates, parity,  
handshaking, and various other parameters and options.  
Easy Set-Up and Operation  
Configuration of the APS is simple. A menuing system is used to select communications  
parameters, and enable or disable options. The APS can easily adapt to the requirements of  
almost any data communications application.  
Limited Command Access  
The APS is ideal for situations that require limited access to important commands. Two  
security levels allow each port to function as a Supervisor Port or User Port, depending on the  
password entered at login. Supervisor Ports are allowed to change configuration, display  
status, and connect to any other port; User Ports are only allowed to connect to the ports  
provided by their password. Each individual port can be assigned its own unique, user-defined  
password, up to sixteen characters long.  
Password Protected Connection and Command Access  
The convenient password feature provides restricted access to command functions, and also  
restricts unauthorized connection to specific ports. Each individual port can be assigned its  
own unique, user-defined password, up to sixteen characters long.  
Non-Volatile Memory  
If power to the unit is lost or interrupted, the APS’s non-volatile memory will retain user-  
defined parameters and port connections.  
Modem Communication  
The APS can be controlled by a local PC that communicates with the unit via cable, or  
controlled remotely via external modem. ProComm (or another communications program) is  
used to send commands to connect ports or display status.  
Configuration Backup  
Once you have configured the APS to fit your application, parameters and options can be saved  
to an ASCII text file on your PC. This allows you to quickly restore user-selected parameters  
if the unit configuration is accidentally altered or deleted. Saved parameters can also be  
uploaded to other APS units. This allows rapid set-up when several units will be configured  
with identical or similar parameters.  
1-1  
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APS-16, APS-8, and APS-4 Units  
This User’s Guide discusses the APS-16, APS-8 and APS-4 Asynchronous Port Switches.  
Throughout this User’s Guide, all three units are referred to as "the APS". The APS-16  
includes sixteen RS232 ports, the APS-8 includes eight RS232 ports, and the APS-4 includes  
four RS232 ports. All other features function identically.  
Typographic Conventions  
^ (e.g. ^X)  
Indicates a control character. For example, the text "^X" (Control X)  
indicates the [Ctrl] key and the [X] key must be pressed simultaneously.  
COURIER FONT Indicates characters typed on the keyboard. For example, /E or /P 02.  
[Bold Font]  
Text set in bold face and enclosed in square brackets, indicates a specific  
key. For example, [Enter] or [Esc].  
< >  
[ ]  
Indicates required keyboard entries. For Example: /P <n>.  
Indicates optional keyboard entries. For Example: /W [n].  
1-2  
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2. Unit Description  
2.1. Front Panel  
Figure 2.1: Instrument Front Panel (Model APS-16 Shown)  
¬ CLEAR: Restarts the APS operating program without changing user-selected parameter  
settings or breaking port connections.  
- ON: Lights when AC Power is applied.  
® SET: Used to Initialize the APS to defaults specified by the SetUp Switches. To  
initialize, press and hold both the SET and CLEAR buttons, release only the CLEAR  
button, and then release the SET button.  
Notes:  
• During initialization, all port LEDs will flash ON for approximately one half  
second.  
• During initialization, all command-selected parameters will be cleared, and the  
APS will revert to the default parameters specified by the SetUp Switches.  
¯ RDY: Flashes to indicate unit is operational.  
° ACTIVITY LEDs: Light when corresponding port is receiving data. The APS-16  
includes sixteen Activity LEDs, the APS-8 includes eight Activity LEDs, and the APS-4  
includes four Activity LEDs.  
2-1  
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2.2. Back Panel  
Figure 2.2: Instrument Back Panel (Model APS-16)  
Figure 2.3: Instrument Back Panel (Model APS-8)  
Figure 2.4: Instrument Back Panel (Model APS-4)  
¬ RS232 PORTS: For connection to RS232 console ports on user devices. For more  
information, please refer to Section 4.4 (connection instructions), Appendix A (interface  
description), and Section 5.2 (Setup Ports).  
- SetUp Switches: A bank of eight DIP switches, which set default communication  
parameters and other features. Note that on APS-16 units, SetUp Switches are located on  
the underside of the unit; on APS-8 and APS-4 units, the SetUp Switches are located on  
the instrument back panel.  
® 115/230 Voltage Selector: AC powered units only.  
¯ Power Switch  
° Power Cable Receptacle AC powered units only. DC units include a terminal block  
assembly as described in Section 4.1.  
2-2  
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3. Getting Started  
This section provides a brief overview of basic APS capabilities, and describes simple tests  
that can be used to determine if the unit is operating properly.  
3.1. Communication Parameters  
The SetUp Switches select default operating settings. Switch functions are summarized in  
Section 4.2, and on a label on the APS unit.  
When the unit is shipped from the factory, the SetUp Switches are set for 9600 baud, 8 Bits-No  
Parity, RTS/CTS handshaking, verbose response, and command echo On (all switches ON).  
For this overview only, use the default switch configuration. Set your communications  
program (e.g. ProComm ) to the parameters listed below. After completing this overview and  
installing the unit, please refer to Section 5 for instructions on selecting faster communication  
speeds and other parameters.  
· 9600 Baud  
· RTS/CTS Handshaking  
· Full Duplex (Command Echo ON)  
· 8 Bits, No Parity, 1 Stop Bit  
Using Other Parameters for this Overview (Optional):  
If desired, the APS can match the parameters used by your communications program. Refer to  
Section 4.2 and configure SetUp Switches accordingly. After changing the switches, reset the  
APS: press and hold both the SET and CLEAR buttons, release only CLEAR, wait for the Port  
LEDs to flash, and then release the SET button.  
Note: If SetUp Switches are changed, new settings will not take effect until the  
unit is initialized.  
3.2. Apply Power to the APS  
For AC units, the Voltage Selector Switch on the instrument back panel is used to set the unit  
for 115V or 230V AC power. When connecting power to a DC unit, please refer to the  
additional instructions in Section 4.1. Connect the APS to an appropriate power source. Press  
the Power Switch ON. The ON LED should light, and the RDY LED should begin to flash.  
CAUTION: This device should only be operated with the type of power source  
indicated on the instrument nameplate. If you are not sure of the type of power  
service available, please consult your local power company.  
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3.3. System SetUp Ports  
In order to ensure access to command functions, Ports 1 and 2 are designated as System SetUp  
Ports; the Supervisor Mode cannot be disabled at these ports. Ports 1 and 2 will always allow  
password protected access to all APS command functions, even when the unit has been reset to  
the default state.  
Therefore, Ports 1 and 2 are generally used for communication during initial set-up and  
configuration, or after the unit has been reinitialized (reset) to default parameters.  
3.4. Connecting your PC to the APS  
The APS can be controlled by a local PC directly connected to the APS, or controlled remotely  
via external modem. For this overview, a local PC running ProComm (or a similar  
communications program), will be cabled to Port 1.  
Note: Communication via Modem (Optional): This overview can also be  
performed via modem. Section 4.4 describes the procedure for connecting a modem  
to the APS.  
Attach a standard null modem cable to your PC COM port. Make certain to connect to the  
COM port used by your communications program. Connect the other end of the cable to APS  
Port 1. For a description of the port interface, please refer to Appendix A.  
3.5. Communicating with the APS Unit  
Perform the following procedure to access the APS Command Mode, explore basic features,  
and check for proper operation.  
1. Start your communications program (e.g. ProComm) and set it to 9600 bps, 8 bits, no  
parity, 1 stop bit.  
2. Press [Enter] to access the APS Command Mode.  
a) In order for [Enter] to be recognized as a wake-up command, it must be pressed  
without any characters preceding it.  
b) If you have already hit other keys, press [Enter] twice.  
c) (Optional) If you are performing this overview via modem, refer to Section 5.1 for  
additional instructions.  
3. The Port Status Screen will be displayed, followed by the "APS>" prompt, indicating that  
you have successfully accessed Command Mode. If the prompt is not displayed, check  
the following:  
a) Cable Connection: Check the connection between the APS and the PC. Make  
certain the cable connectors are firmly seated.  
b) Communication Parameters: Make certain the APS and ProComm are using the  
same baud rate.  
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Figure 3.1: The Supervisor Level Help Screen  
4. Help Screen: Type /H [Enter] to display the Supervisor Level Help Screen (Figure 3.1).  
5. Port Status Screen: Type /S [Enter] to display the Port Status Screen (Figure 3.2),  
which summarizes conditions at all Ports. Note that the APS-8 Port Status Screen will  
list only eight ports, and the APS-4 Port Status Screen will list only four ports. The  
various fields of the Port Status Screen are further explained in Section 6.1.  
6. Port Connection: The APS can perform two different types of port connections;  
Resident Connections and Third Party Connections.  
a) Resident Connection: Your resident port (e.g. Port 1) issues a /C command to  
connect to a second port.  
i.  
To connect Port 1 to Port 2, type /C 2 [Enter]. While Port 1 is connected, the  
APS will not recognize commands issued at Port 1. However, the unit will  
recognize a Resident Disconnect Sequence issued at Port 1 or Port 2.  
ii. Issue the Resident Disconnect Sequence (Logoff Sequence); type ^X (press  
[Ctrl] and [X] at the same time).  
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Figure 3.2: The Port Status Screen (Model APS-16; Defaults Shown)  
b) Third Party Connection: Your resident port (e.g. Port 1) issues a /C command to  
create a connection between two other ports.  
i.  
To connect Port 2 to Port 3, type /C 2 3 [Enter].  
ii. While Ports 2 and 3 are connected, Port 1 will still recognize APS commands.  
Type /S [Enter] to display the Port Status Screen. The "STATUS" column  
should now list Ports 2 and 3 as connected, and Port 1 as "Free".  
iii. Issue a Third Party Disconnect command to disconnect Ports 2 and 3; type /D 2  
[Enter]. The unit will display the "Are you Sure (y/n)?" prompt. Type y and  
press [Enter] to disconnect.  
iv. Type /S [Enter] to display the Port Status Screen. The "STATUS" column  
should now list Ports 2 and 3 as "Free".  
7. Site I.D. Message: If desired, the Site I.D. Message can be used to indicate the name or  
location of the unit. Note that the Site I.D. cannot include double quotes ().  
a) Type /F and press [Enter]. When the System Parameters menu appears, type 1 and  
press [Enter]. A prompt will appear. Key in the desired text (up to 32 characters)  
and press [Enter].  
b) To display the Site I.D., type /J [Enter].  
c) Note that the Site I.D. will be cleared when the  
unit is initialized.  
This completes the introductory overview of the APS. Please proceed to Sections 4 and 5 for  
complete installation and configuration procedures.  
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4. Hardware Installation  
4.1. Connecting Power to the APS Unit  
The APS is available in both AC and DC powered versions. When connecting AC or DC power  
to the APS, proceed as follows:  
CAUTION: This device should only be operated with the type of power source  
indicated on the instrument nameplate. If you are not sure of the type of power  
service available, please contact your local power company.  
4.1.1. AC Powered Units  
The Voltage Selector Switch on the instrument back panel is used to set the unit for 115V or  
230V AC power. Plug the supplied power cable into the receptacle on the APS back panel and  
then connect the power cable to a grounded AC outlet.  
4.1.2. DC Powered Units  
When connecting the APS to your DC power source, first remove the protective cover from the  
DC terminal block, attach the wires from the -48 VDC power source to the screw terminals,  
connect your ground line to the labeled ground screw, and then replace the protective cover.  
Figure 4.1: Terminal Block Assembly (DC Units Only)  
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4.2. Configure SetUp Switches  
The SetUp Switches are used to select default settings for the APS RS232 ports. On model  
APS-16 , the SetUp Switches are located on the underside of the unit. On APS-8 and APS-4  
models, the SetUp Switches are located on the instrument  
back panel.  
When the APS is shipped from the factory, the SetUp Switches are configured for 9600 baud, 8  
Bits-No Parity, RTS/CTS handshaking, verbose command response, and command echo on (all  
switches ON). These settings are compatible with most applications. If the default settings are  
not compatible with your application, change the switch settings as follows.  
Notes:  
• The SetUp Switches should be configured to match the parameters your control  
device will use when communicating with the APS. This will ensure access to  
command functions, even if the unit is initialized to default parameters.  
• If the SetUp Switch configuration is changed, new parameters will not take effect  
until the unit is initialized as described in Section 4.3.  
• Operating parameters (baud rate, parity, etc.) can be selected for each port using  
the /P command as described in Section 5.5. The /P command can select different  
parameters for each APS port.  
• When the APS is initialized, parameters will return to settings specified by the  
SetUp Switches.  
On/Off Positions: On the APS-8 and the APS-4 (Switches on Back Panel), the switches are  
ON when placed in the DOWN position. On the APS-16 (Switches on underside of unit)  
On/Off positions are indicated on a label adjacent to the SetUp Switches.  
4.2.1. Default Baud Rate (Sw1, Sw2, Sw3)  
SetUp Switches one through three select the default baud rate for all APS RS232 Ports. The  
default baud rate must match the rate your control device will use when communicating with  
the APS. If the control device will communicate via modem, select a default baud rate that is  
compatible with the modem. Note that the /P command can also be used to select a different  
operating baud rate for each port.  
SW  
1
2
3
Default Baud Rate  
9600*  
ON  
ON  
ON  
OFF  
ON  
ON  
ON  
300  
OFF  
OFF  
ON  
ON  
1200  
OFF  
ON  
ON  
2400  
OFF  
OFF  
OFF  
OFF  
19.2K  
OFF  
ON  
ON  
38.4K  
OFF  
OFF  
57.6K  
OFF  
115.2K  
* = Factory Setting  
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4.2.2. Default Handshake (Sw4, Sw5)  
The default handshake format must match the format your control device will use when  
communicating with the APS. SetUp Switches 4 and 5 can select RTS/CTS (hardware),  
XON/XOFF, Both or None. Note that the /P command can also be used to select a different  
handshake format for each port.  
Switch  
4
5
Default Handshake  
RTS/CTS *  
XON/XOFF  
Both  
ON  
ON  
OFF  
ON  
ON  
OFF  
OFF  
OFF  
None  
* = Factory Setting  
4.2.3. Default Response Message Format (Sw6)  
When commands are invoked, the APS can respond with either verbose or terse (abbreviated)  
messages. Response messages are summarized in Section 9.2. After installation, the /P  
command can also set the response format to "none" (Quiet Mode). When Quiet Mode is  
selected, the unit will not send response messages. Note that the /P command can also be used  
to select a different Response Message format for each port.  
Switch 6  
ON  
Default Response Message Type  
Verbose (English Text) *  
OFF  
Terse (abbreviated / numeric)  
* = Factory Setting  
4.2.4. Default Command Echo (Sw7)  
Switch Seven enables or disables the Command Echo. When enabled, characters sent to the  
APS will be echoed back to the control device. Note that the /P command can also be used to  
selectively enable or disable the Command Echo at each individual port.  
Switch 7  
ON  
Default Command Echo  
Enable*  
OFF  
Disable  
* = Factory Setting  
Note: SetUp Switch 8 is not currently used.  
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4.3. Initialize Unit to Default Settings  
If SetUp Switch settings are changed, new parameters will not take effect until the APS is  
initialized.  
CAUTION: After initialization, the APS will revert to the parameters specified  
by the SetUp Switches. Any command-selected parameters will be lost.  
1. Simultaneously press the SET and CLEAR buttons, located on the face of the APS.  
2. Release the CLEAR button, wait for the Port LEDs to flash, and then release the SET  
button.  
4.4. Connecting Devices to the APS  
The APS RS232 Ports are standard DB9 connectors, configured as DTE Ports, and are similar  
to a standard serial port on a PC.  
1. Access the APS Command Mode.  
2. Determine which APS port will be used for connection to the new device (e.g. Port 3).  
3. Check Buffer: Type /S [Enter] to display the Port Status Screen. Check the "Buffer  
Count" column, which lists the amount of data stored in the buffer for each port.  
a) If the Port Status Screen shows data stored in the buffer for the desired port, type /E  
xx [Enter] to clear the buffer (where xx is the desired port number).  
b) Note that cleared data cannot be recovered.  
4. Use an appropriate DB9 cable to connect the RS232 serial port on the device to the  
selected DB9 port on the APS.  
a) External Modems and other DCE Devices: Use a standard serial modem cable.  
b) PCs and other DTE Devices: Use a standard null modem cable.  
5. Select communication parameters for the port as described in Section 5.  
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Figure 4.2: APS Application Example (Model APS-16 Shown)  
4.5. Application Example  
The example in Figure 4.2 shows one of many possible installation configurations for the APS.  
In this example, APS-16 ports have been configured as follows:  
· Port 1 (System SetUp Port): This port has been left open in order to permit on-site  
service personnel to access the Command Mode without disrupting other ports. Since  
Port 1 is a System SetUp Port, the service tech is allowed password protected access to  
Supervisor Level commands, and is able to connect to any port, change configuration, or  
display unit status.  
· Port 2 (Modem Port): An external modem has been installed at Port 2. This port has also  
been configured for Modem Mode, which allows definition of a modem reset string,  
initialization string, and hang-up string. When a caller contacts the APS unit via modem, a  
password prompt will be displayed. If the Supervisor Password is entered, the APS will  
permit access to Supervisor Level Commands; if a Port password is entered, the APS will  
only recognize User Level Commands. Supervisors are allowed to adjust port  
configuration, connect to any port, or review unit status. Users are only allowed to review  
status and connect to the ports allowed by their Port Password.  
· Ports 5, 7, and 9 (User Ports): The Port Password “COLOCATION1” has been assigned  
to these three ports. If the APS is contacted via the Modem Port, and this password is  
entered at log in, User’s will only be able to review status of permitted ports and connect  
to the devices attached to Ports 5, 7, and 9.  
· Ports 12, 14, and 16 (User Ports): The Port Password “COLOCATION2” has been  
assigned to these three ports. If the APS is contacted via the Modem Port, and this  
password is entered at log in, User’s will only be able to review status of permitted ports  
and connect to the devices attached to Ports 12, 14, and 16.  
Note that in this example, Ports 3 through 16 could also be a mixture of ports connected to  
external modems, and ports connected to devices such as file servers or archives. This would  
allow remote users to dial in and access a specific file server or archive after entering a valid  
Port Password at log in.  
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5. Configuration  
5.1. Access to the APS Command Mode  
When the APS Command Mode is active, commands can be invoked to select parameters, and  
connect or disconnect ports.  
Note: Command Mode cannot be accessed from a Buffer Mode Port, Passive Mode  
Port, or any port that is currently connected to another APS port.  
1. Start your communications program (e.g. ProComm ). Make certain the APS and  
ProComm are set for the same parameters (e.g. baud rate, parity, etc.).  
2. Access the Command Mode.  
a) Local Access: To access the command mode from a local PC that is connected to the  
APS via cable, press [Enter].  
i.  
There must be no other characters preceding [Enter]. If you have already hit  
other keys, press [Enter] twice.  
ii. If the Supervisor Password has been defined, the password prompt will be  
displayed. Key in your Supervisor or Port password and press [Enter]. The  
"APS>" prompt will appear.  
b) Modem Access: To access the command mode via modem, proceed as follows:  
i.  
Dial the number for the external modem connected to the APS.  
ii. If you have defined the Supervisor Password, a prompt will be displayed. Key in  
your Supervisor or Port password and press [Enter]. If the Supervisor Password  
has not been defined, just press [Enter]. The "APS>" prompt will appear.  
5.2. System SetUp Ports  
As discussed previously in Section 3 of this User’s Guide, Ports 1 and 2 are designated as  
System SetUp Ports. Ports 1 and 2 will always permit password protected access to Supervisor  
Level command functions, even when the unit is initialized to default parameters.  
In order to ensure that access to command functions is always available, Ports 1 and 2 cannot  
be configured as Buffer Mode or Passive Mode Ports (Buffer and Passive Mode Ports are not  
able to access the Command Mode.) In addition, Ports 1 and 2 always permit password  
protected access to Supervisor Level commands; the Supervisor Mode cannot be disabled at  
these two ports.  
5.3. Password Functions  
The APS features two different types of passwords; the Supervisor Password and the Port  
(User) Passwords. The Supervisor Password allows system administrators to invoke unit  
configuration commands, and the Port Passwords allow users to access specific ports in order  
to create connections between permitted ports or view port configuration parameters.  
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5.3.1. The Supervisor Password  
The Supervisor Password allows access to higher level APS configuration commands, which  
administrators can employ to select communication parameters, assign port access rights, and  
perform other system management tasks.  
After the Supervisor Password has been defined (via the System Parameters menu), the APS  
will display a password prompt whenever you attempt to access the command mode. If the  
correct Supervisor Password is entered, the APS command mode then starts up in Supervisor  
Mode. Supervisor Level commands are summarized in Section 9.3 of this User’s Guide.  
Notes:  
• If the Supervisor Password is not defined, then Supervisor Level commands will  
be available to all ports, and port access and configuration functions will not be  
password protected.  
• If you wish to restrict user ports from changing APS configuration parameters or  
connecting to restricted ports, the Supervisor Password must be defined.  
• When the Supervisor Password is defined, the APS will display a password  
prompt when you attempt to access the command mode. Any RS232 port that has  
not been assigned a Port Password, can then only be accessed using the Supervisor  
Password.  
• When defining a Supervisor Password, it is strongly recommended that you record  
the password for future use. If you forget or lose your Supervisor Password, you  
will not be able to access Supervisor Level Commands. In this case, the only way  
to access the Supervisor Mode, is to reinitialize the APS to default values as  
described in Section 4.2.  
Normally, the Supervisor Password can be entered at any port in order to gain access to  
Supervisor Level commands. Note that if you wish to completely deny a port’s access to  
Supervisor Mode (even with the Supervisor Password), the Port Parameters menus (/P) can be  
used to disable the Supervisor Mode at ports 3 through 16. The Supervisor Mode cannot be  
disabled at System SetUp Ports 1 and 2.  
Note that if the unit is reset to default parameters, all ports will revert to the default state,  
where Supervisor Level commands are available to all ports, without password protection.  
5.3.2. The Port Passwords  
The Port Passwords (or User Passwords) allow system administrators to restrict access to a  
specific group of ports. When the APS command mode is accessed with a Port Password, users  
may only connect to the RS232 Ports to which they have been granted access, and review  
configuration parameters for those ports. Port Passwords do not grant access to APS  
configuration commands.  
The configuration menus (/P) for each RS232 port allow a Port Password to be assigned to each  
individual port. In order to allow a Port Password to grant access to a group of APS ports, the  
same Port Password is assigned to each port in the group.  
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For example, if the Port Password “test” is assigned to ports 3, 4, and 5, then when “test” is  
entered at the Password Prompt, the user will only be able to connect to ports 3, 4, and 5, and  
will only be able to view parameters for ports 3, 4, and 5.  
If desired, all APS ports can function as both a Supervisor Port and a User Port, depending on  
which password is entered at the login prompt. However, if you wish to prevent a port from  
being able to access the Supervisor Mode at all (even with the Supervisor Password), the  
Supervisor Mode can be disabled at the RS232 Ports using the Port Configuration menus as  
described in Section 5.5. Note however, that the Supervisor Mode cannot be disabled at Ports  
1 and 2; these ports are designated as SetUp Ports, and are always allowed password protected  
access to Supervisor Level commands.  
Note: When Port Passwords are defined, the APS will not allow you to select a  
Port Password that has already been used as the Supervisor Password.  
5.4. Defining the Site ID and Supervisor Password  
Before configuring individual ports, the Site ID and Supervisor Password should be defined.  
The Site ID indicates the location or name of the APS; the Supervisor Password restricts access  
to sensitive command functions. The Site ID and Supervisor Password are defined via the  
System Parameters menu (/F).  
Notes:  
• The Site ID cannot include double quotes.  
• The Supervisor Password cannot include an asterisk, forward slash, spaces, or  
double quotes.  
• Both the Site ID and Supervisor Password will be cleared if the APS is initialized  
to default settings.  
• The APS will not allow you to select a Supervisor Password that is the same as an  
existing Port Password.  
• The System Parameters Menu is only available in Supervisor Mode.  
1. Access the Command Mode. Type /F [Enter] to display the System Parameters Menu.  
2. Site ID Message: (Up to 32 chars.; Default = undefined) Type 1 and press [Enter], a  
prompt will appear. Key in the desired text and press [Enter] . The Site ID will be listed  
on the Port Status and Port Diagnostic Screens.  
3. Supervisor Password: (Up to 16 characters; Default = undefined) Type 2 and press  
[Enter], a prompt will appear. Key in the desired password, then press [Enter]. The  
APS will prompt you to re-key the password to confirm spelling and capitalization. Key  
in the password a second time, and then press [Enter].  
Notes:  
• The Supervisor Password is case sensitive. Make certain to note the exact  
password entered, including the case of each letter.  
• Make certain to write down your Supervisor Password. If the password is lost or  
forgotten, you will not be able to access Supervisor Level commands unless you  
initialize the unit and clear all parameters as described in Section 4.3.  
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5.5. Port Configuration  
5.5.1. Configuration Conventions  
When responding to prompts, invoking commands, and selecting items from the port  
configuration menus, note the following:  
· To select an item from a Port Configuration menu, key in the number for the item and press  
[Enter].  
· To clear an item in a Port Configuration menu, enter the number for the desired item and  
press [Enter]. When the prompt appears, press [Space] and then press [Enter].  
· When defining the Port Name, do not use the forward slash character (/), double quotes  
("), the asterisk character (*), or blank spaces.  
· Port Names cannot begin with a number.  
· Refer to the instructions in each screen for additional functions available under that screen.  
· To exit a menu or prompt without changing its current value, press [Esc].  
· Passwords and port names are case sensitive. When defining passwords and port names,  
note the exact text, including the case of each character.  
· If you are configuring the APS unit via modem, communication parameters will not be  
changed until after you exit from command mode and disconnect from the APS unit.  
5.5.2. Port Modes  
The APS offers four different port operation modes; Any-to-Any Mode, Passive Mode, Buffer  
Mode, and Modem Mode. The Port Modes function as follows:  
· Any-to-Any Mode: Allows communication between connected ports. Any-to-Any Mode  
Ports can be connected to other Any-to-Any Mode, Passive Mode, Buffer Mode, or Modem  
Mode Ports by accessing Command Mode and invoking the /C command (see  
Section 7.1.1). The Any-to-Any Mode is available to all ports.  
· Passive Mode: Allows communication between connected ports, but does not allow access  
to Command Mode. Passive Mode Ports can be connected by accessing Command Mode  
from a free Any-to-Any or Modem Mode port and invoking the /C command (see  
Section 7.1.1). The Passive Mode is not available to Ports 1 or 2.  
· Buffer Mode: Allows collection and storage of data received from connected devices.  
Collected data can be retrieved by accessing Command Mode from a free Any-to-Any or  
Modem Mode Port, and issuing the Connect (/C) Command. Note that the Buffer Mode  
also allows pass-through communication with the connected device. The Buffer Mode is  
not available to Ports 1 or 2.  
· Modem Mode: Allows communication between connected ports and simplifies connection  
to an external modem. A port configured for the Modem Mode can perform all functions  
normally available in Any-to-Any Mode. The Modem Mode also allows definition of a  
Hang-Up String, Reset String, and Initialization String. Any APS RS232 port can be  
configured for the Modem Mode.  
For more information on Port Modes, please refer to Section 7.  
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Figure 5.1: Port Configuration Menu (Port 2 Shown)  
5.5.3. RS232 Port Configuration Menus  
The Port Configuration Menus are used to select options for each of the APS RS232 ports.  
Parameters selected via these menus will stay in effect until the unit is initialized or the /P  
command is used to reconfigure the port. After initialization, parameters will revert to the  
defaults specified by the SetUp Switches.  
To select port parameters, proceed as follows:  
1. Access the Command Mode. If the password prompt is displayed, key in your Supervisor  
Level Password.  
2. Type /P, followed by the number of the port to be configured, and press [Enter]. For  
example, to configure Port 2, type /P 2 [Enter]. The Port Configuration menu will  
appear (Figure 5.1).  
a) If the /P Command is entered without the port number (e.g. /P [Enter]), the  
configuration menu for your resident port will be displayed.  
b) The /P command is only available in the  
Supervisor Mode  
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The Port Configuration menu offers the following options:  
1. Port Name: (Up to 16 characters) Assigns a name to the port. (Default = undefined).  
2. Password: (Up to 16 chars.) Defines the Port Password for this port. Note that identical  
Port Passwords are generally assigned to several ports. When this password is entered at  
the login prompt, the user will then have access to all ports that share this password.  
(Default = undefined).  
Notes:  
• The Port Password is not displayed by the Port Parameters menu. When the Port  
Password has been defined, the field for this item will read “defined”. To display  
Port Passwords, invoke the /SP or /WP commands as described in Section 6.  
• The APS will not allow you to define a Port Password which is the same as the  
existing Supervisor Password.  
3. Baud Rate: Selects the baud rate for the port. Can be set to any standard rate from 300  
bps to 115.2K bps. (Default = Selected By SetUp Switches 1, 2, and 3)  
4. Bits/Parity: (Default = 8-None).  
5. Stop Bits: (Default = 1).  
6. Handshake Mode: Selects the handshake format for this port; XON/XOFF, RTS/CTS  
(hardware), Both, or None. (Default = RTS/CTS).  
7. Port Mode: Defines the operation mode for this port. Note that Ports 1 and 2 cannot be  
configured for Passive Mode or Buffer Mode. (Default = Any-to-Any Mode).  
When Any-to-Any, Passive, or Buffer Mode is selected, the unit will display the DTR  
Output prompt as shown in Figure 5.1. The DTR Output prompt is not displayed when  
Modem Mode is selected.  
74. DTR Output: Determines how DTR will react when this port disconnects. DTR  
can be held low, held high, or pulsed for 0.5 seconds and then held high. In the  
default state, DTR will pulse for 0.5 seconds and then remain high. For more  
information on hardware lines, please refer to Appendix A. (Default = Pulse).  
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Figure 5.2: Port Parameters Menu (Modem Mode)  
When Port Mode (menu Item 7) is set to Modem Mode, the menu will include additional  
prompts (see Figure 5.2), which are used to define the following:  
71. Reset String: If necessary, this prompt can re-define the modem reset string, which  
is sent prior to the Initialization string. (Up to 48 Characters,  
Default = ATZ).  
72. Initialization String: Defines a command string that is sent to initialize a modem  
to settings required by your application. (Up to 48 Characters,  
Default = AT&C1$D2S0=1).  
73. Hang-Up String: Although the APS will pulse the DTR line to hang-up an  
attached modem, the Hang-Up string is often useful for controlling modems that do  
not use the DTR line. (Up to 48 Characters,  
Default = undefined).  
Note: When communicating with the APS via modem, communication parameters  
will not be changed until you exit from command mode and discontinue the modem  
connection to the unit.  
8. Supervisor Mode: Permits or denies access to Supervisor Mode. When enabled  
(Permit), and the valid Supervisor Password is entered, the port will allow access to  
Supervisor Level commands. When disabled (Deny), the port may not enter Supervisor  
Mode, even when the Supervisor Password is entered. (Default = Permit).  
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9. Logoff Character: Defines the Logoff Character for this port. The Logoff Character  
determines the command(s) or character(s) that must be issued at this port in order to  
disconnect from a second port (Resident Disconnect). (Default = ^X ([Ctrl] plus [X])).  
Note: When redefining the Logoff Character, make certain to select a character  
that does not normally occur in your data. This will prevent the unit from  
accidentally disconnecting ports in the middle of a data transfer. For example, if  
the Logoff Character is defined as "s", then the ports will disconnect whenever the  
letter "s" is detected.  
10. Sequence Disconnect: Enables/Disables and configures the Resident Disconnect  
command. This prompt offers the option to either disable the Sequence Disconnect, or  
select a one character format or a three character format. (Default = One Characters).  
Note the following:  
• When a Resident Connection is initiated, the APS will send a message which lists the  
connected ports, and displays the one character or three character command that will be  
required in order to disconnect.  
• The One Character Disconnect sequence is intended for situations where the destination  
port will not receive the disconnect command. When the Three Character format is  
selected, the disconnect sequence will pass through to the destination port prior to  
breaking the connection.  
• When the One Character format is selected, resident connections are terminated by  
entering the selected Logoff Character only. There is no need to press [Enter] before  
and after the Logoff Character when the One Character format is selected.  
• When the Three Character format is selected, the Resident Disconnect Sequence will  
use the format "[Enter]LLL[Enter]", where L is the selected Logoff Character.  
11. Timeout Disconnect: Enables and selects the Timeout Period for this port. If enabled,  
and the port does not receive or transmit data for the specified Timeout Period, the port  
will disconnect. In Any-to-Any Mode, Passive Mode, or Buffer Mode, the default setting  
for this item is “OFF”. When the port is set for Modem Mode, the default setting for this  
item is 15 minutes.  
Notes:  
• The Timeout Disconnect is also applied to non-connected ports that are left in  
Command Mode. If no additional data activity is detected, an unconnected port  
will exit from command mode when the Timeout Disconnect value expires.  
• When connected ports time out and are disconnected, both ports will also exit  
from Command Mode.  
12. Response Type: Selects the type of messages that this port will send in response to  
commands. The user can select Verbose (English Text), Terse (Numeric / Abbreviation),  
or Quiet Mode (No Response). (Default = Verbose).  
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13. Command Echo: Enables or Disables the command echo for this port. (Default = On).  
14. Accept Break: Determines whether the port will accept breaks received from the  
attached device, and pass them along to a connected port. When enabled, breaks received  
at this port will be passed to any port that this port is connected to, and sent along to the  
device connected to the other port. When disabled, breaks will be refused at this port,  
and hence, not sent to the other port. (Default = Yes)  
Figure 5.3: The Copy Port Parameters Menu  
5.6. Copying Parameters to All Ports  
The /CP command (Copy Port Parameters) provides a convenient means for selecting similar  
parameters for all APS RS-232 ports.  
When the /CP command is invoked, the unit will display a menu which allows you to select  
port communication parameters, then copy them to all APS RS-232 ports. The Copy Port  
Parameters menu can be used to set all parameters for all RS-232 Ports, or define only a select  
group of parameters and then copy them to all ports.  
Notes:  
• The /CP command is only available in Supervisor Mode.  
• The Copy Port Parameters Menu will not display the Port Password. This field  
will read either “undefined” or “defined”, depending upon whether or not the Port  
Password has been specified.  
• The /CP command cannot be used to set Ports 1 and 2 to Passive Mode or Buffer  
Mode (Port Mode, Item 7).  
• The /CP command cannot be used to disable the Supervisor Mode at Ports 1 and 2  
(Supervisor Mode, Item 8).  
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To select common parameters for all APS RS-232 ports, proceed as follows:  
1. Access the APS command mode. If the password prompt is displayed, key in your  
Supervisor Level Password.  
2. At the command prompt, type /CP and press [Enter], the menu shown in Figure 5.3 will  
be displayed.  
3. Selecting Parameters: To select parameters to be copied, key in the number for the  
desired parameter, press [Enter], and then follow the instructions in the submenu. Note  
that it is not necessary to define all port parameters, for example, the /CP command could  
be used to select only the Baud Rate for all ports.  
Note: The /CP command will only copy the parameters that are currently displayed  
by the Copy Port Parameters menu. Note that although the Port Password is not  
displayed, the selected password will be copied if the field for this item reads  
“defined”.  
4. Clear Menu: After defining several parameters, if you wish to clear the /CP menu and  
start again, type - (dash) and press [Enter], the menu will be reset.  
5. Exit Without Copy: To exit from the Copy Parameters menu without copying selected  
parameters to all RS232 ports, type X and then press [Enter]. The APS will exit from the  
Copy Parameters menu and return to the command prompt.  
6. Copy Parameters: When you have finished selecting parameters, press [Esc] to copy the  
selected parameters to all APS RS-232 Ports and exit from the Copy Port Parameters  
menu. Note that the APS will display a “Sure” prompt before copying parameters to  
other ports.  
5.7. Save User Selected Parameters  
Although this step is optional, it is strongly recommended to save all user-defined parameters  
to an ASCII file. This will allow quick recovery in the event of accidental deletion or  
reconfiguration of port parameters. Section 8 describes the procedure for saving configuration  
parameters to an ASCII file.  
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6. The Status Screens  
The APS Status Screens display the connection status and communication parameters for the  
APS RS-232 ports. There are three different types of status screens; The Port Status Screen  
(/S), the Port Diagnostics Screen (/SD), and the Port Parameters Screens (/W).  
6.1. The Port Status Screen (/S)  
The Port Status Screen lists the general status of the APS’s  
RS-232 ports. To display the Port Status Screen, access the command mode and type /S  
[Enter], the screen will appear as shown in Figure 6.1.  
Although both Supervisors and Users can display the Port Status Screen, the screen will appear  
slightly different, depending upon whether the command mode was accessed with the  
Supervisor Password or a Port Password. When a Port Password (User Mode) is entered at  
login, the Port Status Screen will only display the status of those ports that share the same Port  
Password that was entered at login.  
When the Supervisor Mode is active, the Port Status Screen offers the option to either display  
or suppress Port Passwords. Normally, when the /S command is invoked, the Password column  
will read either “defined” or “undefined”, depending upon whether or not the password for  
each port has been specified. To display the Port Status Screen with Port Passwords included,  
type /SP and then press [Enter]. Note that the /SP command option is not available in User  
Mode.  
Figure 6.1: The Port Status Screen (Supervisor Mode, APS-16 Shown)  
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As shown in Figure 6.1, The Port Status Screen lists the following items. Note that the APS-8  
Port Status Screen will show only eight ports, and the APS-4 Port Status Screen will show only  
four ports  
· Name: The user-defined name for each port.  
· Password: The user-defined password for each port. Note that actual passwords are not  
displayed; this column will read either “undefined” or “defined”. To display Port  
Passwords, type /SP [Enter] (Supervisor Mode Only).  
· Status: The connect status of each port. When the port is connected, this column will list  
the number of the other APS port connected to this port.  
· Mode: The user-selected Port Mode. This column will read Any (Any-to-Any), Modem,  
Passive, or Buffer, depending on the configuration selected for the port.  
· Buffer Count: Lists the amount of data (in bytes) stored in the buffer for this port.  
6.2. The Port Diagnostics Screen (/SD)  
The Port Diagnostics Screen provides more detailed information about each port, including the  
port name and communication parameters. To display the Port Diagnostics Screen, access the  
command mode and type /SD [Enter], the screen will appear as shown in Figure 6.2. Note  
that the APS-8 Port Diagnostics Screen will show only eight ports, and the APS-4 Port  
Diagnostics Screen will show only four ports.  
Like the Port Status Screen, the Port Diagnostics Screen is also available to both Supervisors  
and Users, and will look slightly different, depending upon whether the command mode was  
accessed with the Supervisor Password or a Port Password (User Mode).  
Figure 6.2: The Port Diagnostics Screen (APS-16 Shown)  
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In User Mode, the Port Diagnostics Screen will display only the status of those ports that share  
the same Port Password that was entered at login. Ports that are protected by other passwords  
will not be displayed.  
As shown in Figure 6.2, the Port Diagnostics Screen lists the following items:  
· Port: The Port Number. Note that if this column contains a plus sign (+), this indicates  
that the port will be allowed to access the Supervisor Mode if the appropriate Supervisor  
Password is entered at login.  
· Name: The user-defined name for each port.  
· Status: The connect status for each port. When the port is connected, this column will list  
the number of the other port that is connected to this port. Note that if this column  
contains an asterisk, this indicates that the port has accessed the Command Mode.  
· Baud: The baud rate selected for each port.  
· COM: The Data Bits, Parity, and Stop Bits selected for each port. For example, “8N1”  
indicates Eight data bits, No parity, and One stop bit.  
· HS: The handshaking (flow control) mode for each port.  
· Mode: The user-selected Port Mode. This column will read Any (Any-to-Any), Modem,  
Passive, or Buffer, depending on the configuration selected for each port.  
· BUF: Lists the amount of data (in bytes) currently stored in the buffer for this port.  
· CTS: The High/Low status of the CTS line at the RS232 interface.  
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Figure 6.3: The Port Parameters Screen  
6.3. The Port Parameters Screens (/W)  
The /W command displays more detailed information about an individual APS port. Rather  
than listing connection information for all ports like the Port Status Screens, the Port  
Parameters screen lists all defined parameters for a specific port.  
The /W command is available in both Supervisor Mode and User Mode. Note however, that  
when you log in with a Port (User) password, the APS will only display information regarding  
your resident port.  
If the Supervisor Mode is active, the Port Parameters Screens offer the option to either display  
or suppress Port Passwords. Normally, when /W is invoked, the Password field will read either  
“defined” or “undefined”, depending upon whether or not the port’s password has been  
specified. To display the Port Parameters Screen with the Port Password, type /WP, followed  
by the desired port number, and then press [Enter]. Note that the /WP command option is not  
available in User Mode.  
The /W command uses the following format:  
/W[P] xx [Enter]  
Where:  
P
Is the command option to display port passwords. Note that when this option is  
included (e.g. /WP 5), the Port Parameters Screen will display the Port Password, if  
defined. (Supervisor Mode Only).  
xx  
is the desired port number.  
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7. Operation  
7.1. Any-to-Any Mode  
Any-to-Any Mode Ports can be connected to other Any-to-Any, Passive, Buffer, or Modem  
Mode Ports by accessing Command Mode and issuing the /C Command. All ports can be  
configured for the Any-to-Any Mode.  
7.1.1. Port Connection and Disconnection  
The APS provides communication between devices without the requirement that both devices  
use the same communication parameters. This allows you to connect devices that use  
dissimilar baud rates, parity, handshake, and etc. The APS converts data rates and other  
parameters, eliminating the need to select common parameters for all connected devices.  
7.1.1.1. Connecting Ports  
Two different types of connections can be made between APS ports; Resident Connections and  
Third Party Connections.  
· Resident Connections: Your resident port issues a /C command to connect to a second  
port. For example, Port 4 issues the /C command to connect to Port 5.  
· Third Party Connections: (Supervisor Mode Only) Your resident port issues a /C  
command to create a connection between two other ports. For example, Port 1 is your  
resident port, and Port 1 issues a command to connect Port 2 to Port 3.  
Notes:  
• Third Party Connections can only be initiated from a port with Supervisor Level  
command capability.  
• If a port has accessed Command Mode using the Port Password (User Mode), then  
that port will only be able to connect to other ports that share the same port  
password.  
To Connect ports, proceed as follows:  
1. Access the Command Mode. If the Password Prompt is displayed, enter your Supervisor  
Password or Port Password.  
2. Invoke the /C command to connect the desired ports.  
a) Resident Connect: To connect your resident port to another port, type /C xx  
[Enter]. Where xx is the number or name of the port you want to connect. The APS  
will display the numbers of the connected ports, along with the command sequence  
that will be required in order to disconnect the two ports.  
Example: To connect your resident port to Port 8, type /C 8 [Enter].  
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b) Third Party Connect: (Supervisor Mode Only) To connect any two ports (other than  
your resident port), type /C xx XX [Enter]. Where xx and XX are two port names  
or numbers. The APS will display the numbers of the two connected ports.  
Example: To connect Port 5 to Port 6, invoke the following command at a port with  
Supervisor Level command capability: /C 5 6 [Enter].  
When the /C command specifies the port name, it is only necessary to enter enough letters to  
differentiate the desired port from other ports. Type an asterisk (*) to represent the remaining  
characters in the port name. For example, to connect your resident port to a port named  
"SALES", the connect command can be invoked as /C S*, providing no other port names  
begin with the letter "S".  
7.1.1.2. Disconnecting Ports  
There are three different methods for disconnecting ports, the Resident Disconnect, the Third  
Party Disconnect, and the No Activity Timeout. Providing the Timeout feature is enabled, a  
No Activity Timeout will disconnect resident ports or  
third party ports.  
Note: Option 74 in the Port Parameters Menu determines how the DTR signal will  
react when the port disconnects. The DTR signal can either be held low, held high,  
or pulsed and then held high.  
1. Resident Disconnect: Disconnects your resident port from another port. For example, if  
you are communicating via Port 3, and Port 3 is connected to Port 4, a Resident  
Disconnect would be used to disassociate the two ports. The APS offers two different  
Resident Disconnect command formats; the One Character Format and the Three  
Character Format (for more information, please refer to Section 5.5.3.):  
a) One Character (Default): When the One Character Disconnect Sequence is selected,  
simply enter the selected Logoff Character once (Default = ^X ([Ctrl] plus [X])).  
Note that it is not necessary to enter a carriage return before or after the Logoff  
Character.  
b) Three Characters: Uses the format “[Enter]LLL[Enter]”, where L is the selected  
Logoff Character. For example, if the Logoff Character is defined as "+", then the  
three character disconnect sequence would be [Enter]+++[Enter].  
c) If the default Resident Disconnect Sequence is not compatible with your application,  
both the command format and Logoff Character can be redefined via the Port  
Configuration menus, as described in Section 5.5.  
2. Third Party Disconnect: (Supervisor Mode Only) The /D command is issued from your  
resident port to disconnect two third party ports. For example, if your Resident Port is  
Port 1, a Third Party Disconnect would be used to disconnect Port 3 from Port 4.  
a) The /D command uses the format: /D xx XX [Enter], where xx and XX are the  
numbers of the ports that you wish to disconnect.  
b) The /D (Disconnect) command can only be invoked by a port with access to  
Supervisor Level commands.  
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c) The /D command can specify both connected ports, or either of the two ports. For  
example, if Port 1 is your resident port, any of the following commands can be used  
to disconnect Port 3 from Port 4:  
/D 3 4 [Enter]  
or  
/D 3 [Enter]  
or  
/D 4 [Enter]  
3. No Activity Timeout: Providing the Timeout feature is enabled at either connected port,  
the No Activity Timeout can disconnect Resident Ports, or Third Party Ports.  
a) RS232 Ports: To configure the Timeout Feature for the RS232 Ports, invoke the /P  
command to display the Port Configuration Menu for the desired port as described in  
Section 5.5.3. Option 11 enables and defines the Timeout Feature.  
b) When the Timeout Feature is enabled, the port will automatically disconnect if no  
data is received for the defined Timeout Period.  
Notes:  
• When connected ports time out, both ports will exit command mode after  
disconnecting.  
• When an unconnected port is left in Command Mode and no additional data  
activity is detected, the port will automatically exit Command Mode when its  
defined timeout value elapses.  
7.1.2. Defining Hunt Groups  
A Hunt Group creates a situation where the APS will scan a group of ports and connect to the  
first available port in the group. Hunt Groups are created by assigning identical or similar  
names to two or more ports. Hunt Groups can be defined using Any-to-Any, Passive, Buffer, or  
Modem Mode Ports.  
1. Access the Command Mode. If the password prompt is displayed, enter the Supervisor  
Password.  
2. Invoke the /P command to access the Port Configuration Menu for the desired Port(s) as  
described in Section 5.5.3. For example, to configure Port 4, type /P 4 [Enter].  
3. From the Port Configuration Menu, select item 1 to define the Port Name.  
4. Repeat steps 2 and 3 above to assign identical names to the other ports in the Hunt Group.  
For example, a series of ports in a group could all be named "SERVER".  
5. To connect to the next available port in the hunt group, invoke the /C command using the  
port name to specify the desired group. For example, /C SERVER [Enter].  
6. Your port will be connected to the first available port in the group. If all ports are  
presently connected, the APS will respond with the "BUSY" message.  
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7. It is only necessary to enter enough letters of the port name to differentiate the Hunt  
Group ports from other ports. Type an asterisk (*) to represent the remaining characters  
in the port name. For example, to connect your resident port to the first available port in  
a group of ports named "SALES1", "SALES2", and "SALES3", the connect command can  
be invoked as /C S* [Enter], providing no other port names begin with the letter "S".  
Hunt Group port names must be unique. Otherwise, ports with similar names will also be  
included in the Hunt Group.  
Hunt Group Example 1:  
1. Ports 1 and 2 are Modem Mode ports, and modems are installed at both ports. Port 1 is  
named "MODEM1" and Port 2 is named "MODEM2".  
2. Your resident port is Port 4. To connect to the first available Modem, access the  
Command Mode and type /C MODEM* [Enter].  
Hunt Group Example 2:  
1. Ports 3, 4, and 5 are Any-to-Any Mode ports. All three ports are named "SERVER".  
2. Your resident port is Port 1, and you want to connect Port 2 to the first available server,  
access the Command Mode and type /C 2 SERVER [Enter].  
7.2. Passive Mode  
Passive Mode Ports function the same as Any-to-Any Mode Ports, but do not allow access to  
Command Mode. A Passive Mode Port can communicate with other ports, but cannot enter  
Command Mode, and therefore cannot invoke commands to redefine port parameters, display  
status, and etc.  
Passive Mode Ports can be connected by accessing the Command Mode from a free Any-to-  
Any Mode or Modem Mode Port, and invoking the Third Party Connect or Resident Connect  
Command as described in Section 7.1.1.2. Passive Mode ports will not buffer data, except  
during baud rate conversion.  
Notes:  
• A Passive Mode Port is not allowed to access the Command Mode.  
• In order to ensure supervisor access to important command functions, the Passive  
Mode is not available to Ports 1 and 2 (SetUp Ports).  
7.3. Buffer Mode  
Ports configured as Buffer Mode ports will collect data from the connected device and store it  
in the APS's statically allocated memory. Each APS port features a fixed length, fixed position  
data buffer.  
The Buffer Mode allows collection of data from various devices without the requirement that  
all devices use the same communication parameters (e.g. baud rate, parity, etc.).  
Notes:  
• Buffer Mode Ports cannot access the Command Mode.  
• In order to ensure supervisor access to important command functions, the Buffer  
Mode is not available to Ports 1 and 2 (SetUp Ports).  
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7.3.1. Reading Data from Buffer Mode Ports  
To retrieve data from Buffer Mode Ports, you must first determine which port buffers contain  
data. To check port buffers for stored data, access the Command Mode and type /S [Enter] to  
display the Port Status Screen.  
To retrieve data from buffer memory, go to a free Any-to-Any or Modem Mode Port, access the  
Command Mode (Supervisor Level), and issue the /C command using the following format:  
/C xx [Enter]  
Where xx is the number or name of the port buffer to be read.  
If the port's buffer is empty, the APS will send a message which reads "Connected xx, Buffer  
Empty"; where "xx" is the port number. If the buffer contains data, the APS will display a  
prompt that offers four options:  
· Next Screen: To scroll through data one screen at a time, press the [Space] bar. Each  
time the space bar is pressed, the next full screen of data will be sent.  
· Scroll All: To send all data without pausing, press [1].  
· Skip/Connect: To connect to the buffer port without sending stored data, press [2].  
· Erase/Connect: To connect to the buffer port and erase stored data, press [3]. Note that  
buffered data will be erased immediately and will not be sent.  
Note: All four of these options also allow pass-through communication with the  
device connected to the Buffer Mode port.  
To clear data from the buffer, use the Erase/Connect option, or go to a free Any-to-Any or  
Modem Mode Port with Supervisor Level command capability, and issue the /E (Erase Buffer)  
command using the following format:  
/E xx [Enter]  
Where xx is the number or name of the port buffer to be cleared.  
7.3.2. Port Buffers  
The Status Screen lists the amount of Buffer Memory currently used by each port. The APS  
uses buffer memory in two different ways, depending on the user-selected port mode.  
· Any-to-Any, Passive, and Modem Mode Ports: When two ports are communicating at  
dissimilar baud rates, the buffer memory prevents data overflow at the slower port.  
· Buffer Mode Ports: Stores data received from connected devices. The user issues a  
connect command (/C) from an Any-to-Any Mode or Modem Mode port to retrieve data.  
If the Status Screen indicates an accumulation of data, the /E (Erase Buffer) command can be  
invoked to clear the buffer.  
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7.4. Modem Mode  
In addition to allowing data transfer, the Modem Mode also provides additional functions  
specifically related to modem communication. A Modem Mode Port can perform all functions  
normally available in Any-to-Any Mode. The Modem Mode is available to all APS RS232  
ports.  
When the Modem Mode is selected, the port configuration menu (command /P) will display  
three additional prompts, which allow the user to re-define the modem reset string,  
initialization string, and hang-up string.  
When the Modem Mode is selected for a port with Supervisor Level command access, the  
Supervisor Password should be defined. This will discourage unauthorized access to higher  
command functions.  
When a call is received, the unit will prompt the caller to enter a password. The APS allows  
three attempts to enter a valid password. If the correct password is not entered in three  
attempts, or if the user does not respond to the password prompt within 30 seconds, the modem  
will disconnect.  
The password can be defined and enabled by invoking the /P command as described in  
Section 5.5.  
Notes:  
• When a Modem Mode Port exits Command Mode, or the DCD line is lost while  
the Command Mode is active, the APS will pulse the DTR line to the modem.  
The unit will then send the user-defined modem command strings to make certain  
the modem is properly disconnected and reinitialized.  
• When an external modem is installed at a APS port, other ports can use the  
modem for calling out. To call out, invoke the /C command to connect to the port,  
and then access the modem as you normally would.  
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8. Saving and Restoring Configuration  
Parameters  
After the APS has been properly configured, parameters can be downloaded and saved as an  
ASCII text file. Later, if the configuration is accidentally altered, the file with the saved  
parameters can be uploaded to automatically reconfigure the unit without the need to manually  
assign each parameter.  
Saved parameters can also be uploaded to other APS units. This allows rapid set-up when  
several units will be configured with the same parameters.  
The “Save Parameters” procedure can be performed from any terminal emulation program (e.g.  
ProComm, Crosstalk, Hyperterminal, etc.), that allows downloading of ASCII files.  
8.1. Sending Parameters to a File  
1. Start ProComm and access the APS Command Mode. If the password prompt is  
displayed, enter the Supervisor Password.  
2. When the APS command prompt appears, type /U and press [Enter]. The APS will  
prompt you to configure your terminal emulation program to receive an ASCII download.  
a) Set your terminal emulation program to receive an ASCII format download, and the  
specify a name for a file that will receive the saved parameters (e.g. APS.PAR).  
b) Disable the Line Wrap function for your terminal emulation program. This will  
prevent command lines from being broken in two during transmission.  
3. When the terminal emulation program is ready to receive the file, return to the APS Save  
Parameter File menu, and press [Enter] to proceed with the download. APS parameters  
will be saved on your hard drive in the file specified in Step 2 above.  
4. The APS will send a series of ASCII command lines which specify the currently selected  
APS parameters. The last line of the file should end with a “/G-00” command. When  
the download is complete, press [Enter] to return to the "APS>" command prompt.  
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8.2. Restoring Saved Parameters  
This section describes the procedure for using ProComm to send stored parameters to the APS.  
1. Start your terminal emulation program and access the APS Command Mode; if the  
password prompt is displayed, enter the Supervisor Password.  
2. Configure your terminal emulation program to upload an ASCII text file.  
3. Upload the ASCII text file with the saved APS parameters. If necessary, key in the file  
name and directory path.  
4. Your terminal emulation program will send the ASCII text file to the APS. When the  
terminal program is finished with the upload, make certain to terminate the Upload mode.  
Note: If the APS detects an error in the parameters file, it will respond with the  
“Invalid Parameter” message. If an error message is received, carefully check the  
contents of the parameters file, correct the problem, and then repeat the upload  
procedure.  
5. If the parameter upload procedure is successful, the APS will send a confirmation  
message, and then return to the "APS>" command prompt. Type /S and press [Enter],  
the APS Status Screen will be displayed. Check the Status Screen to make certain the  
unit has been configured with the saved parameters.  
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9. Command Reference Guide  
9.1. Command Conventions  
The commands described in this section conform to the following conventions:  
· Slash Character: Most APS commands begin with the Slash Character (/).  
· Apply Command to All Ports: When the asterisk character is entered as the argument of  
the /D command (Disconnect Port), or the /E command (Erase Buffer) the command will  
be applied to all ports. For example, to erase all port buffers, type /E * [Enter].  
· Port Name Wild Card: It is not always necessary to enter the entire port name. Port  
names can be abbreviated in command lines by entering the first character(s) of the name  
followed by an asterisk (*). For example, a port named "SERVER" can be specified as  
"S*". Note however, that this command would also be applied to any other port name that  
begins with the letter "S".  
· Suppress "Sure?" Prompt: When the /D (Disconnect Port), /E (Erase Buffer), or /I  
(Default and Test Unit) commands are invoked, the /Y option can be included in the  
command line to override the "Are you Sure (y/n)?" prompt. For example, to disconnect  
Port 8 without displaying the "Sure?" prompt, type /D/Y 8 [Enter].  
· Enter Key: All commands are invoked by pressing [Enter].  
· Command Mode: APS Ports will only recognize commands when the Command Mode has  
been activated. The Command Mode can be accessed from a free Any-to-Any or Modem  
Mode Port. To access the Command Mode, proceed as described in Section 5.1.  
· Connected Ports: When two ports are connected, most APS commands will not be  
recognized by either of the connected ports. The only exception is the Resident Disconnect  
Sequence (Default = ^X ([Ctrl] plus [X])).  
· Configuration Menus: To exit from a configuration menu, you must press [Esc].  
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9.2. Command Response  
When commands are sent to the APS, the unit can respond with either verbose (English Text)  
or terse messages (numeric / abbreviated). The default message type for all ports can be set to  
either terse or verbose using SetUp Switch Six.  
After the unit is installed and configured, the port configuration command (/P) can specify an  
individual response format for each port. In addition to the Terse and Verbose response modes,  
the port configuration commands can also select the Quiet Mode. When the Quiet Mode is  
selected, the port will not send messages in response to commands.  
The table below summarizes the various response messages for both the Terse and Verbose  
modes.  
Terse  
Verbose  
0
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
OK  
RAM Test Passed  
Connected *  
Busy  
Disconnected  
Invalid Command  
Are You Sure (Y/N) ?  
Invalid Parameter  
Invalid Syntax  
Invalid Access  
Enter Site ID:  
Aborted  
Enter Password:  
Invalid Password  
RAM Test Failed at *  
Inactivity Timeout, Disconnected  
Data in Buffer from Previous Connection ...  
Re-Enter Logoff Sequence to Purge Buffer.  
G
Asleep  
* These verbose Response Messages include additional information not provided by terse  
Response Messages.  
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9.3. Command Summary  
Command Availability  
Function  
Command Syntax  
[Enter]  
[Enter]  
Supervisor  
User  
X
Enter Command Mode  
Exit Command Mode  
Help Menu  
X
X
X
[Enter]  
[Enter]  
X
X
Display Site ID  
X
X
Display Port Status  
Display Port Diagnostics  
[Enter]  
XÊË  
XÊ  
XË  
XÊ  
XÊ  
XÌ  
[Enter]  
Display Port  
Parameters (Who)  
[Enter]  
Set System Parameters  
[Enter]  
X
X
Set RS232 Port  
Parameters  
[Enter]  
[Enter]  
Copy RS232 Port Parameters  
Connect  
X
X
X
X
[Enter]  
XÍ  
Resident Disconnect  
X
Third Party  
Disconnect  
[Enter]  
[Enter]  
[Enter]  
Erase Buffer  
[Enter]  
X
Default & Test  
[Enter]  
[Enter]  
X
X
Save Parameters  
Ê Supervisor Mode displays parameters for all ports; User Mode only displays parameters  
for ports allowed by Port Password.  
Ë To display Port Passwords, include the “P” Option. (Supervisor Mode Only).  
Ì A port with "User" command capability can only view its own parameters. A User Port  
cannot view parameters for other ports.  
Í A User Port cannot perform a Third Party Connect.  
Î Resident Disconnect: Disconnects your resident port from another port. Note that the  
Resident Disconnect Sequence can be redefined via the Port Configuration Menus.  
Ï Third Party Disconnect: Disconnects two or more nonresident ports. Must be issued  
from a third port with Supervisor command capability.  
9-3  
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9.4. Command Set  
This Section provides more detailed information on all APS commands, sorted alphabetically  
by name.  
[Enter] Enter Command Mode  
In order to set parameters or connect ports, you must first access the command mode as  
described in Section 5.1. When the Command Mode is inactive (port asleep), the port will only  
respond when the [Enter] key is pressed without any characters preceding it. If the Supervisor  
Password (command /F) has been defined, the unit will require a password before allowing  
access to Command Mode.  
Availability: Supervisor / User  
Format: [Enter] (Press [Enter] twice if other characters have already been typed).  
Response: The Port Status Screen will be displayed, followed by the "APS>" command  
prompt.  
^X Resident Disconnect Sequence  
The Resident Disconnect Sequence is issued to disconnect your resident port from another port.  
For example, if you are communicating via Port 3, and Port 3 is connected to Port 4, the  
Resident Disconnect Sequence would be used to disconnect Port 3 from Port 4. Although the  
default Resident Disconnect Sequence is ^X ([Ctrl] plus [X]), the command format and Logoff  
Character can also be redefined via the Port Configuration Menus as described in Section 5.5.3.  
Note that a three character disconnect command can also be selected.  
Availability: Supervisor / User  
Format: ^X  
Response:  
Verbose: The APS will send the “Disconnected” message, followed by the Port Status  
Screen.  
Terse: 3  
9-4  
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/C Connect  
Establishes a bi-directional connection between two ports. For more information and command  
line examples, please refer to Section 7.1. There are two different types of port connections:  
· Resident Connect: If the /C command specifies one port name or number, your resident  
port will be connected to the specified port.  
· Third Party Connect: If the /C command specifies two port names or numbers, the unit  
will connect the two ports indicated. A Third Party Connect command must be issued from  
a third port with “Supervisor” command capability. "User" ports cannot initiate a Third  
Party Connect.  
Note:  
• Ports with "User" command capability can only connect to ports that share the  
same Port Password.  
• Ports with “Supervisor” command capability are allowed to connect to all other  
ports.  
Availability: Supervisor / User  
Format: /C <x> [x] [Enter]  
Where x is the number or name of the port(s) to be connected.  
Response:  
Verbose: Connected xx, when a Resident Connection is initiated, the APS will also display  
the currently selected Resident Disconnect Sequence for your port.  
Terse: 1  
/CP Copy RS232 Port Parameters  
Allows quick set-up when all APS RS232 ports will be configured with the same or similar  
parameters. When the /CP command is invoked, the APS will display a menu that is used to  
select common port parameters, which can then be copied to all APS RS232 ports. For more  
information, please refer to Section 5.6.  
Availability: Supervisor Only  
Format: /CP [Enter]  
Response: Displays Copy Parameters Menu  
9-5  
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/D Third Party Disconnect  
Invoke the /D command at your resident port to disconnect two other ports. The /D command  
cannot be used to disconnect your resident port. To disconnect your resident port, issue the  
Resident Disconnect Sequence or wait for the Timeout Period to elapse (if enabled).  
Availability: Supervisor Only  
Format: /D[/Y] <x> [x] [Enter]  
Where:  
/Y  
(Optional) suppresses the "Sure?" prompt.  
x
Is the number or name of the port(s) to be disconnected. To Disconnect all ports,  
enter an asterisk.  
Response:  
Verbose: "Are you Sure (y/n)?", if Y, unit will respond with "Disconnected".  
Terse: 5, if Y, unit will respond with 3.  
Example: To disconnect Port 2 from Port 3 without the "Sure?" prompt, access the Command  
Mode from a third port with "All" command capability and type one of the following  
commands:  
/D/Y 2 [Enter] or /D/Y 3 [Enter]  
/E Erase Buffer  
Erases data from the buffer for a specified port or several ports. Note that erased data cannot  
be recovered.  
Availability: Supervisor Only  
Format: /E[/Y] <x> [x] [Enter]  
Where:  
x
is the number or name of the port buffer(s) to be cleared. To erase buffers for all  
ports, enter an asterisk.  
/Y  
(Optional) Suppresses the "SURE? (Y/N)" prompt.  
Response:  
Verbose: "Are You Sure (y/n)?", if Y, the unit will respond with "OK".  
Terse: 5, if Y, the unit will respond with 0.  
Example: To clear the buffer for Port 3, access the Command Mode from a port with "All"  
command capability, and type /E 3 [Enter].  
9-6  
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/F Set System Parameters  
Displays a menu which is used to define the Site ID message and Supervisor Password. When  
the Supervisor Password is defined, the APS will display a password prompt before allowing  
access to command mode. For more information, refer to Section 5.4.  
Note: Make certain to record your Supervisor Password for future reference. If the  
Supervisor Password is lost or forgotten, you will not be able to access Supervisor  
Level commands.  
Availability: Supervisor Only  
Format: /F [Enter]  
Response: Displays System Parameters Menu  
/H Help  
Displays a Help Screen, which lists all APS commands along with a brief description of each  
command.  
Availability: Supervisor / User  
Format: /H [Enter]  
Response: Displays Help Screen. Note that the User Level Help Screen does not include  
Supervisor Level Commands.  
/I  
Default and Test  
Tests internal memory and initializes the unit with the default parameters specified by the  
SetUp Switches.  
CAUTION: When /I is invoked, the APS will revert to the parameters  
specified by the SetUp Switches. Command selected parameters will be lost.  
Availability: Supervisor Only  
Format: /I[/Y] [Enter]  
Where /Y is a command option used to suppress the "Sure?" prompt.  
Response:  
Verbose: "Are You Sure (y/n)?", if Y, memory test and initialization begins.  
Terse: 5, if Y, memory test and initialization begins.  
/J  
Display Site ID  
Displays the user-defined Site I.D. message.  
Availability: Supervisor / User  
Format: /J [Enter]  
Response: Displays Site I.D. Message  
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/P Set RS232 Port Parameters  
Displays a menu which allows the user to select options and parameters for the selected port.  
Section 5.5.3 describes the procedure for defining port parameters.  
Availability: Supervisor Only  
Format: /P [x] [Enter]  
Where x is the number or name of the port to be configured. If the port number or name is not  
specified, the APS will display the configuration menu for your resident port.  
Response: The Port Parameters Menu is displayed.  
/S  
Display Port Status  
Displays the Port Status Screen, which lists current conditions and parameters for all ports.  
Normally, the Port Status Screen will not display Port Passwords; the Password column will  
read either “defined” or “undefined”, depending upon whether or not the password for each  
port has been specified. When the Supervisor Mode is active, the /SP command offers the  
option to either display or suppress Port Passwords. In User Mode, the /S command will only  
display information for the ports that share the same password entered at login. For more  
information on the Port Status Screen, please refer to Section 6.1.  
Availability: Supervisor / User  
Format: /S[P] [Enter]  
When the “P” option is included (e.g. /SP), the Port Status Screen will lists the password for  
each port, if defined. (Supervisor Mode Only).  
Response: Displays Port Status Screen  
/SD Display Port Diagnostics  
Provides more detailed information regarding the operational status of each port. Note that in  
User Mode, this screen will only display parameters for the ports that are allowed by the Port  
Password that was entered at log in. For More information on the Port Diagnostics Screen,  
please refer to Section 6.2.  
Availability: Supervisor / User  
Format: /SD [Enter]  
Response: Displays Port Diagnostics Screen  
/U Save Parameters  
Sends APS configuration parameters to an ASCII text file as described in Section 8.  
Availability: Supervisor Only  
Format: /U [Enter]  
Response: The APS will send a series of command lines.  
9-8  
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/W Display Port Parameters (Who)  
Displays configuration of an individual port, but does not allow the user to change parameters.  
Ports with User Level command capability cannot display parameters for other ports.  
Normally, the Port Parameters screen will not include the Port Password. Note however, that  
when the Supervisor Mode is active, the /WP option can be used to display the password for  
the target port. For more information, please refer to Section 6.3.  
Availability: Supervisor / User  
Format: /W[P] [x] [Enter]  
Where:  
P
When the “P” option is included (e.g. /WP 5), the Port Parameters screen will list  
the password for the port, if defined. (Supervisor Mode Only).  
x
Port number or name. If the "x" argument is omitted, parameters for your resident  
port will be displayed.  
Response: Displays port parameters.  
Example: To display parameters for a port named "SERVER", access the Command Mode  
from a port with Supervisor Level command capability, and type /W SERVER [Enter].  
/X Exit Command Mode  
Exits Command Mode. When issued at the Net Port, also ends the telnet session. Note that  
exiting from Command Mode will not terminate port connections.  
· Any-to-Any Mode: Exits Command Mode.  
· Modem Mode: Disconnects and resets modem, hang-up message is sent, hardware line to  
modem drops for 500 ms, and modem reset string is sent.  
Availability: Supervisor / User  
Format: /X [Enter]  
Response: Disconnected  
9-9  
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A. RS232 Port Interface  
Figure A.1: RS232 Port Interface  
DCD and DTR hardware lines function as follows:  
1. When connected:  
a) If either port is set for Modem Mode, the DTR output at either port reflects the DCD  
input at the other end.  
b) If neither port is set for Modem Mode, DTR output is held high (active).  
2. When not connected:  
a) If the port is set for Modem Mode, upon disconnect DTR output is pulsed for 0.5  
seconds and then held high.  
b) If the port is not set for Modem Mode, DTR output is controlled by the DTR Output  
option (Parameters Menu, Option 74). Upon disconnect, Option 74 allows DTR  
output to be held low, held high, or pulsed for 0.5 seconds and then held high.  
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B. Specifications  
RS232 Port Interface:  
Model APS-16: Sixteen (16) RS232 serial inputs use DB9 connectors configured as DTE  
ports.  
Model APS-8: Eight (8) RS232 serial inputs use DB9 connectors configured as DTE ports.  
Model APS-4: Four (4) RS232 serial inputs use DB9 connectors configured as DTE ports.  
Coding: Asynchronous, 7/8 bits ASCII.  
Parity: Even, Odd, None  
Stop Bits: 1 or 2.  
Data Rate: 300 to 115.2K bps (standard rates).  
Flow Control: XON/XOFF, RTS/CTS, Both, or None.  
Timeout: No activity timeout disconnects port. 1, 5, 10, 15, 30 seconds, 1, 5, 15, 30, 90  
minutes.  
Memory: Stores Parameters and captured data. Non-volatile 512K SRAM buffer memory.  
Statically allocated.  
Break: Accept Break or Refuse Break  
SetUp Switches: 8 position, sets default parameters for baud rate, flow control, response  
format, and command echo.  
LEDs: On, Ready, Activity (for each RS232 Port).  
Temperature: 0°C to 45°C (operating)  
Power:  
AC Version: IEC-32 Inlet, 115/230 VAC, 50/60 Hz, 5 watts  
DC Version: Terminal Strip, -48 VDC, 0.2 Amp Max.  
Size:  
Model APS-16: 1.8" x 17.15" x 6.8" (H x W x D)  
Model APS-8: 1.8" x 17.15" x 6.8" (H x W x D)  
Model APS-4: 1.8" x 17.15" x 6.8" (H x w x D)  
Weight: 8 lbs. shipping weight  
Humidity: 10 to 90% RH, Non-Condensing  
Venting: Side vents are used to dissipate heat generated within the unit. When mounting the  
unit in an equipment rack, make certain to allow adequate clearance for venting.  
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C. Customer Service  
Customer Service hours are from 8:00 AM to 5:00 PM, PST, Monday through Friday. When  
calling, please be prepared to give the name and make of the unit, its serial number and a  
description of its symptoms. If the unit should need to be returned for factory repair it must be  
accompanied by a Return Authorization number from Customer Service.  
WTI Customer Service  
5 Sterling  
Irvine, California 92618  
Local Phone: (949) 586-9950  
Toll Free Service Line: 1-888-280-7227  
Service Fax: (949) 457-8138  
Trademark and Copyright Information  
WTI and Western Telematic are trademarks of Western Telematic Inc.. All other product names  
mentioned in this publication are trademarks or registered trademarks of their respective  
companies.  
Information and descriptions contained herein are the property of Western Telematic Inc..  
Such information and descriptions may not be copied, disseminated, or distributed without the  
express written consent of Western Telematic Inc..  
© Copyright Western Telematic Inc. 2001.  
June, 2001  
Part Number: 13046, Revision: C  
Trademarks Used in this Manual  
ProComm and ProComm Plus are registered trademarks of Datastorm Technologies, Inc.  
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Index  
A
B
D
C
E
F
H
I
Index-1  
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L
R
M
N
O
P
S
Q
Index-2  
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T
V
W
X
U
Index-3  
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