FieldServer Computer Drive FS 8700 24 User Manual

Driver Manual  
(Supplement to the FieldServer Instruction Manual)  
FS-8700-24 ControlNet  
APPLICABILITY & EFFECTIVITY  
Effective for all systems manufactured after May 1, 2001  
Driver Version:  
1.06  
Document Revision: 7  
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FS-8700-24 ControlNet Driver Manual  
Page 3 of 12  
1.  
ControlNet Description  
The ControlNet driver allows the FieldServer to transfer data to and from devices using  
ControlNet protocol. The SST 5136-CN-ISA Communications Adapter card is included with the  
FieldServer. The FieldServer can communicate using un-scheduled transfers with PCCC  
messages embedded in the ControlNet messages.  
When the FieldServer originates PCCC messages to communicate with PLC5 controllers, it  
uses connected messages. This provides fast reliable communication to the other node. When  
another device originates PCCC messaging, the FieldServer will emulate a PLC5 controller  
supporting connected or unconnected messages to files N7 through to N32..  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 4 of 12  
2.  
Driver Scope of Supply  
2.1. Supplied by FieldServer Technologies for this driver  
FieldServer Technologies  
PART #  
Description  
Communication Adapter - complete with BNC Tee  
Connector  
SST 5136-CN-ISA  
ControlNet Tools CD  
ControlNet Module User’s Guide (Version 1.00)  
CNF2BSS.EXE utility  
FS-8700-24  
Driver Manual.  
2.2.  
Provided by the Supplier of 3rd Party Equipment  
PART #  
DESCRIPTION  
ControlNet Network with cables and terminators  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 5 of 12  
3.  
Hardware Connections  
The FieldServer is connected to the ControlNet Network with 75 ohm coaxial cable. If the  
ControlNet is not wired in redundant mode, ensure that all connectors are connected to the  
COM A port. A 75 ohm terminator must be placed at either end of the ControlNet Bus.  
SST-5136-CN-ISA  
FS-x40  
A
B
75 O T-pieces  
To ControlNet Network  
75 O network terminators  
(408)-262-2299  
FIELDSERVER  
CONTROLNET  
CONNECTION DIAGRAM  
BASE NAME:  
FILE NAME: FS8700-24  
DATE: 11/4/05  
BY: MC  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 6 of 12  
3.1.  
Connection Notes  
Before connecting the FieldServer to the network, the FieldServer MacId should be set. The  
MacId is the term used for a ControlNet station address. The ControlNet MacId of the  
FieldServer is set to the System_Station_Address specified in the FieldServer configuration  
file.  
Section Title  
Bridge  
Column Title  
System_Station_Address  
Function  
Provide MacId for the FieldServer  
Legal Values  
1-99  
Example  
// .Bridge Information  
Bridge  
System_Station_Address  
5
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 7 of 12  
4.  
Configuring the FieldServer for Unscheduled ControlNet Access with PCCC  
messaging  
For a detailed discussion on FieldServer configuration, please refer to the FieldServer  
Configuration Manual. The information that follows describes how to expand upon the factory  
defaults provided in the configuration files included with the FieldServer (See “.csv” sample files  
provided with the FieldServer).  
This section documents and describes the parameters necessary for configuring the FieldServer  
to communicate with ControlNet devices using PCCC messaging. This transfer mechanism  
would be used to communicate between the FieldServer and PLC-5 controllers.  
The configuration file tells the FieldServer about its interfaces, and the routing of data required.  
In order to enable the FieldServer for ControlNet communications, the driver independent  
FieldServer buffers need to be declared in the “Data Arrays” section, the FieldServer virtual  
node(s) needs to be declared in the “Nodes” section, and the data to be transferred needs to be  
mapped in the “Unscheduled Map Descriptors” section. Details on how to do this can be found  
below.  
Note that in the tables, * indicates an optional parameter, with the bold legal value being the  
default.  
4.1.  
Server Side Connection Descriptors  
Section Title  
Connections  
Column Title  
Adapter  
Protocol  
Function  
Adapter Name  
Specify protocol used  
Legal Values  
ControlNet  
ControlNet  
Example  
// Connections  
Connections  
Adapter,  
ControlNet,  
Protocol  
ControlNet  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 8 of 12  
4.2.  
ControlNet Node Descriptors  
This section of the configuration file defines the different MacIds of the ControlNet devices  
on the network. If you want to transfer the data on the local ControlNet card to the data-  
arrays on your FieldServer, typically used when acting as a Server, define a Node_ID with  
the same value as the System_Station_Address.  
Section Title  
Nodes  
Column Title  
Function  
Legal Values  
Up to 32 alphanumeric  
characters  
Node_Name  
Provide name for node  
ControlNet MacId of the node  
to communicate with  
Specify protocol used  
Node_ID  
Protocol  
1-99  
ControlNet  
Example  
// ControlNet Nodes  
Nodes  
Node_Name,  
PLC_1,  
Local,  
Node_ID,  
1,  
5,  
Protocol  
ControlNet  
ControlNet  
4.3.  
Unscheduled Map Descriptors using PCCC messaging  
Maintained on the SST 5136-CN-ISA card are 32 integer files (N7-N39) that can be read or  
written to by other devices on the ControlNet network using PCCC messaging. Client style  
Map Descriptors are used to transfer data to or from the file buffers on the card to the Data  
Arrays on the FieldServer.  
4.3.1.  
FieldServer Specific Map Descriptor Parameters  
Column Title  
Function  
Name of this Map  
Descriptor  
Legal Values  
Up to 32 alphanumeric  
characters  
Map_Descriptor_Name  
One of the Data Array  
names from “Data Array”  
section above  
Data_Array_Name  
Name of Data Array  
0 to maximum specified in  
“Data Array” section above  
Data_Array_Offset  
Function  
Starting offset in Data Array  
Function of Client Map  
Descriptor  
RDBC, WRBC, WRBX  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 9 of 12  
4.3.2.  
Driver Specific Map Descriptor Parameters  
Column Title  
Function  
Legal Values  
One of the node names  
specified in “Node Descriptor”  
above  
Name of Node to  
communicate with  
Node_Name  
For local node 7-39  
Block_Number  
PLC File Number  
For remote node 1-999  
UINT, (SINT, INT) (REAL,  
FLOAT) (BOOL, BIT, FLAG)  
Equal types are shown in  
brackets.  
Type of PCCC data to be  
transferred over  
ControlNet  
PCCC_Type  
0 – 999 ( INT, SINT )  
Address  
Length  
Starting address within file 0 – 499 ( REAL, FLOAT )  
0 – 15999 ( BOOL, BIT, FLAG )  
1 – 249 ( INT, SINT )  
Length of Map Descriptor  
1 – 124 ( REAL, FLOAT )  
1 – 3984 ( BOOL, BIT, FLAG )  
Note the number of bytes per PCCC_Type:  
SINT, INT = 2 bytes, REAL, FLOAT = 4 bytes, BOOL, BIT, FLAG = 8 bits per byte  
Each PLC file is 2000 bytes long and therefore the address values will range from zero  
to a maximum value as indicated. The start address is specified in increments of the  
basic data type specified under PCCC_Type.  
The message buffers in the ControlNet card are each 498 bytes long and only one  
message buffer can be allocated to a Map Descriptor. The Map Descriptor lengths are  
therefore limited to maximum values as indicated when taking the data type byte lengths  
into account.  
4.3.3.  
Timing Parameters  
Column Title  
Scan_Interval  
Function  
Rate at which data is polled >0.1s  
Legal Values  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 10 of 12  
4.3.4.  
Unscheduled Map Descriptor Example  
The following Map Descriptor will read data from a PLC5.  
// Server Side Map Descriptors  
Map Descriptors  
Map_Descriptor_Name,  
A1,  
Data_Array_Name,  
DA_AI3,  
Data_Array_Offset,  
0,  
Function, Node_Name,  
RDBC, PLC5,  
Block_Number,  
7,  
PCCC_Type,  
SINT,  
Address, Length  
33,  
5
Active Map Descriptor  
polls the PLC regularly  
(change to WRBC to write)  
Remote Node  
name of the PLC  
to poll  
Offset into the file  
(N7:33)  
PLC 5 file number to  
read (N7:33)  
The following Map Descriptor will send data to the card to allow other nodes to read the data contained in the FieldServer’s Data  
Array.  
// Server Side Map Descriptors  
Map Descriptors  
Map_Descriptor_Name,  
A1,  
Data_Array_Name,  
DA_AI3,  
Data_Array_Offset,  
0,  
Function, Node_Name,  
WRBC, Local,  
Block_Number,  
7,  
PCCC_Type,  
SINT,  
Address, Length  
125,  
5
Active Map Descriptor  
transfers the data to or  
from the card (change to  
RDBC to read data  
Node name whose MacId  
matches the  
System_Station_Address  
PLC 5 emulated file  
number (7-39)  
Offset into the file  
(N7:125)  
written by other nodes)  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 11 of 12  
Appendix A. Advanced Topics  
Appendix A.1. Write-throughs  
Some FieldServer drivers support “write-throughs”. This is the ability of a Read Map  
Descriptor to automatically create a temporary write Map Descriptor to update the value of  
an external R/W (Read or Write) memory location. Since the ControlNet card contains  
separate Read-Only (Output) and Write-Only (Input) Buffers, write-throughs are not  
supported on ControlNet messaging, but are supported for PCCC messaging. This is  
because PCCC messages are embedded within ControlNet messages allowing for the  
receiving device to process the embedded write message.  
Appendix A.2. Map Descriptor functions  
The diagram below explains the difference between the use of WRBC (Write Block  
Continuous) and RDBC (Read Block Continuous) Map Descriptors. Note that WRBC Map  
Descriptors write data from the FieldServer’s Data Arrays into the output data memory area  
of the card whereas RDBC Map Descriptors place data from the card’s input data memory  
area into the FieldServer’s Data Arrays. The IO data memory areas are kept in RAM on the  
card and are defined by Connection Control Blocks on the card.  
FieldServer  
Data Array  
Data Array  
WRBC Mapdesc  
RDBC Mapdesc  
ControlNet Device  
SST 5136-CN Card  
Input data memory  
area  
Output data memory  
area  
Output data memory  
area  
Input data memory  
area  
Connection  
Control  
Block 01  
ControlNet  
Network  
.
.
.
Input data memory  
area  
Output data memory  
area  
Connection  
Control  
Block 128  
Note:  
1. For ControlNet messaging the target connection is specified  
by Node_Name & CN_Instance.  
2. For PCCC messaging the target connection is specified by  
Node_Name & Block_Number.  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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FS-8700-24 ControlNet Driver Manual  
Page 12 of 12  
THIS PAGE INTENTIONALLY LEFT BLANK  
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com  
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: [email protected]  
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