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Table 4-9. communication module – Micromod Micro-DCI: 53IT5100A Indicator/Totalizer User Manual

Page 55

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Table 4-9. Communication Module

Purpose: This module is used to configure the Datalink port parameters (e.g., baud rate, parity
selection, etc.).

Title

Symbol

Data-

point

De-

fault

Attribute

Instrument
Address

IA

B001

0

It identifies the address of this instrument on the Datalink
network. Each unit connected to the Datalink network must
have its own unique address. Valid addresses are from
0 - 31.

Baud Rate

BR

B002

253 This datapoint value designates the baud rate (data transfer

rate) of the Datalink network. The baud rate must be the
same for all of the instruments connected to the same
Datalink network. Datapoint values and their corresponding
baud rates are as follows:

Value Baud Rate Value Baud Rate
255 28800 9 28800
254 14400 8 14400
N/A N/A 7 19200
253 9600 6 9600
250 4800 5 4800
244 2400 4 2400
232 1200 3 1200
208 600 2 600
160 300 1 300
N/A N/A 0 110

No Parity

CP

L256

0

This datapoint indicates if parity generation and checking
should be turned on or off. It is set to 0 for even parity
serial byte protocol. It is set to 1 for no parity protocol.

No Byte
Stuffing

CB

L258

0

When set to a 1, this datapoint disables the standard
communication protocol feature which inserts a 00 (NUL)
byte after every 7EH (SOH) that is not the beginning of a
message. (This permits user written communications
software to determine the number of bytes to expect in a
response message.) It must be set to 0 when using

the

Micro-DCI

communications software or equipment.

Datalink
Disable

DLD

L257

0

When set to 0 , it permits full Datalink communication
capabilities. When set to 1, it disables Datalink
communication capabilities.

53IT5100 Indicator/Totalizer

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