Prosoft-technology MVI69E-MBS Bedienungsanleitung PDF herunterladen (Seite 143)

MVI69E-MBS ♦ CompactLogix Platform Reference

Communication Module User Manual

ProSoft Technology, Inc. Page 143 of 162

January 6, 2014

7.4.14 Pass-through Formatted Block for Functions 6 and 16 with

Float Data Block

Block 9957: Pass-through Formatted Block for Functions 6 and 16 with Float

Data Block

Block 9957: Request from Module to Processor

Offset

Description

Read Block ID: 9957

Write Block ID: 9957

Number of word registers in Modbus data set

Starting address for Modbus data set

4 to (n+1)

Data (Length in words = n - 2)

Where n = 60, 120, or 240 depending on the Block Transfer Size parameter.

The ladder logic is responsible for parsing and copying the received message

and performing the proper control operation as expected by the Master device.

The processor must then respond to the Pass-through block with a write block

with the following format.

Block 9957: Response from Processor to Module

Offset

Description

Write Block ID: 9957

1 to n

Spare (Length in words = n - 2)

This informs the module that the command has been processed and can be

cleared from the pass-through queue.

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Prosoft-technology MVI69E-MBS Bedienungsanleitung Seite 143