
1 Publication 1756-UM521C-EN-P - July 2004
Chapter
6
Troubleshooting the SynchLink Module
This chapter describes how to troubleshoot the ControlLogix SynchLink
module.
Using the Status Indicators
The SynchLink module uses status indicators to show SynchLink and
communications status (red/green) and a bi-colored LED for module "OK"
(red/green).
During power up, an indicator test is done and the following occurs:
• The "OK" indicator turns red for 1 second and then turns to flashing
green if it has passed the self-test.
Table 6.1
For information on: See page:
Using the Status Indicators 6-1
Using RSLogix 5000 to Troubleshoot the Module 6-3
42875
LINK
SYNC
OK
LINK
COMM
SynchLink
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