Special Function Blocks - ProSoft MVI56E-MNETCR User Manual

Reference
User Manual

5.2.2 Special Function Blocks

Special function blocks are optional blocks used to request special tasks from the
module.
Initialize Output Data Blocks (1000 to 1124)
Use the Initialize Output Data parameter in the configuration to bring the module
to a known state after a restart operation. If the Initialize Output Data parameter
is enabled, when the module performs a restart operation, it will request blocks of
output data from the ReadData array in the processor to initialize the Read Data
area of the module's internal database.
CLX Processor
Read
Tags
Write
Tags
Block Request from Module to Processor
Word Offset
0
1 to 40
41
The block number in word 0 of the block determines the data set of up to 40
output words to transfer from the processor. Ladder logic in the processor must
recognize these blocks and place the correct information in the output image to
be returned to the module.
Block Response from Processor to Module
Word Offset
0
1 to 40
41
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Modbus TCP/IP Multi-Client Enhanced Communications Module for Remote Chassis
Normal Data transfer
MNET Module
Modbus
Local:X:I Output
Modbus
Local:X:O
Input
Description
1000 to 1124
Spare
1000 to 1124
Description
1000 to 1124
Output Data to preset in module.
Spare
MVI56E-MNETCR ♦ ControlLogix Platform
Initialize Output Data transfer
CLX Processor
MNET Module
Read
Local:X:I
Tags
Write
Tags
Local:X:O
Length
1
40
1
Length
1
40
1
ProSoft Technology, Inc.
Modbus
Output
Modbus
Input