Message instructions -7, Message instructions – Rockwell Automation 1756-SYNCH ControlLogix SynchLink Module User Manual User Manual

Page 69

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Publication 1756-UM521C-EN-P - July 2004

Troubleshooting the SynchLink Module 6-7

Message Instructions

To retrieve and reset the SynchLink diagnostic counter information, you must
use a message instruction in ladder logic and a CIP message. This ladder logic
is written in the Main Routine section of RSLogix 5000.

CRC Error
Counter

Number of CRC errors detected
on the SynchLink system since
power-up or last reset service

DINT

2

0 to 2

32

- 1

Framing Error
Counter

Number of framing errors
detected on SynchLink since
powerup or last reset service

DINT

3

0 to 2

32

- 1

Incomplete
Package Error
Counter

Number of incomplete package
errors detected on SynchLink
since powerup or last reset
service

DINT

4

0 to 2

32

- 1

SynchLink
Revision

Revision of SynchLink supported

DINT

5

Bits 0 to 15 - Minor Revision
Bits 16 to 31 - Major Revision

Table 6.3 SynchLink Module Diagnostic Counters

Name:

Description:

Data Type

Attribute ID:

Possible Values:

Double-click to enter the
Main Routine

After adding a message
instruction to a rung, you must
create a tag for the message
instruction

1. Right-click on the

question mark (?) to see
this pull-down menu.

2. Click here to Create a

New Tag.

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