Prosoft-technology MVI56E-SIE Bedienungsanleitung PDF herunterladen (Seite 142)

Reference MVI56E-SIE ♦ ControlLogix Platform

User Manual Client Communication Module

Page 142 of 168 ProSoft Technology, Inc.

September 6, 2012

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 1024)

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

Local:X:I

Local:X:O

MNET Module

Normal Data transfer

Modbus

Output

Modbus

Input

Write

Tags

CLX Processor

Read

Tags

Local:X:I

Local:X:O

MNET Module

Initialize Output Data transfer

Modbus

Output

Modbus

Input

Write

Tags

Block Request from Module to Processor

Word Offset

Description

Length

Reserved

1000 to 1024

2 to 248

Spare

247

249

1000 to 1024

Ladder logic subtracts 1000 from the value contained in word 249 to determine a

block index. This bock index determines which 200-word block of data will be

taken from the ReadData array and placed in the output image to be returned to

the module.

Block Response from Processor to Module

Word Offset

Description

Length

1000 to 1024

1 to 200

Output data to preset in module.

200

201 to 247

Spare

1 2 ... 137 138 139 140 141 142 143 144 145 146 147 ... 167 168

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