Chapter 3: Configuring the

Communication Port Table (A197_COM)

The Communication Port A197_COM table contains the relevant configuration information for communication port setup. Each record in the Communication Port table defines the communication parameters for a single communication port.

Table 3 Communication Port Configuration Table Parameters

Name

 

Range

 

 

Description

 

 

 

 

 

 

 

First SRU record

 

Indexes A197_SRU

 

This parameter contains the first SRU table record to associate with

 

 

 

 

 

 

this communication port.

 

 

 

 

 

 

 

 

Number of SRUs

 

Number of Records of

 

 

This parameter contains the number of SRU table records to

 

 

 

A197_SRU table

 

 

associate with this communication port. The range of SRUs

 

 

 

 

 

 

specified by First SRU and Number of SRUs must specify a valid

 

 

 

 

 

 

range of A196_SRU records.

 

 

 

 

 

 

In the SRU is configured for Full-Duplex Mode, the Number of

 

 

 

 

 

 

SRUs should be set to 1.

 

 

 

 

 

 

Retries Before

0 .. 65535

 

This parameter defines the number of times to retry a message

 

Failure

 

 

 

 

before reporting a communication failure.

 

 

 

 

 

 

A typical value is 3.

 

 

 

 

 

 

Failures Before

1 .. 65535

 

This parameter defines the number of consecutive communication

 

Off-line

 

 

 

 

failures that cause a SRU to be taken off- line.

 

 

 

 

 

 

A typical value is 3.

 

 

 

 

 

 

 

 

Communication

 

Any valid communication

 

 

This parameter contains the ASCII descriptor for the communication

 

Port

 

port (hardware dependent)

 

 

port to use. For example, for the D20, valid communication ports are

 

 

 

COM1 – COM7

 

 

“COM1” through “COM7”.

 

 

 

 

 

 

 

 

 

 

 

 

 

Baud Rate

110, 300, 600, 1200, 2400,

 

 

This parameter specifies the communication baud rate to use on this

 

 

 

4800, 7200, 9600, 19.2k,

 

 

port.

 

 

 

38.4k

 

 

A typical value is 9600.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data Bits

 

7 or 8

 

 

This parameter specifies the number of bits used for data.

 

 

 

 

 

 

 

 

Restricted

A197-0CG-1.00-2

Full

5

 

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GE X3.28 manual Configuring Communication Port Table A197COM, Communication Port Configuration Table Parameters

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