
ControlLogix™ Drive Module
9
Publication 1756-IN577B-EN-P – July 2001
Check the Indicators
The indicators show SynchLink and Drive status (red/green) and a
bi-colored LED for module “OK” (red/green).
During power up, the “OK” indicator turns red for 5 seconds and
then turns to flashing green if it has passed the self-test.
Use the following table to troubleshoot your module.
LED
Indicator
Display Means Take this Action
OK Green Connection is running. None
Flashing
Green
Inhibited I/O connection. None
Red Non-Recoverable Fault Remove module from
service
Flashing
Red
Flash download in progress. None
Off Module is powered down. None
LINK
COMM
LINK
SYNC
DRIVE
COMM OK
DRIVE
FAULT
OS OK
OK
SD3000 INTERFACE
LINK
COMM
LINK
SYNC
DRIVE
COMM OK
DRIVE
FAULT
OS OK OK
SD3000 INTERFACE
Tx (rear)
Rx (front)
Indicators shown are typical for all Drive Modules.
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