Slave polling status blocks – ProSoft Technology MVI69L-MBS User Manual

Page 126

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Reference

MVI69L-MBS ♦ CompactLogix Platform

User Manual

Communication Module

Page 126 of 154

ProSoft Technology, Inc.

January 6, 2014

7.4.4 Slave Polling Status Blocks


Blocks 3002: Port 1 Slave Status

Two arrays are allocated in the module’s primary object to hold the polling status
of each slave on the Master port. This status data can be used to determine
which slaves are currently active on the port, in communication error, or have
their polling suspended and disabled.

Block 3002 to 3006: Request from Processor to Module

Offset

Description

0

Write Block ID: 3002 to 3006 for Port 1 slave polling status request.

1 to 239

Spare



Block 3002 to 3006: Response from Module to Processor

Offset

Description

0

Read Block ID: 3002 to 3006 requested by the processor.

1

Write Block ID: To be used by the processor in its next Write block.

2

Slave ID offset: Index of first slave in block

3

Number of slaves in this block

4 to 61

Slave polling status data

62 to 239

Spare

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