
10
ControlLogix™ Drive Module
Publication 1756-IN577B-EN-P – July 2001
DRIVE
FAULT
Red Module is faulted. See Fault Status
parameters.
Off No fault is present or module is powered
down.
None
LINK
SYNC
Green The module is the time master or a time
relay and synchronization is complete.
None
Flashing
Green
The module is configured as a time relay
from CST to SynchLink but is not
synchronized with a CST master on the
backplane.
N/A
The module is configured as a time relay
from SynchLink to CST but has not
synchronized with the upstream device.
N/A
Flashing
Red
The module is configured as a CST
master and has detected another CST
master.
N/A
The module is configured as a time
master on SynchLink and has received
time information from another time
master on SynchLink.
Ensure that only 1 time
master is present and
transmitting time
information on
SynchLink.
Off The module is not configured as a time
master or time relay or module is
powered down.
None
OS OK Green System and parameter constants loaded. None
Off Checksum failure. Reflash the module.
DRIVE
COMM OK
Green DPS communication is active and
synchronized.
None
Off DPS communication is not active, is not
synchronized, or the module is powered
down.
Verify that cables are
securely connected.
LINK
COMM
Green The module is configured and receiving
valid data from SynchLink.
None
The module is configured and enabled to
only transmit on SynchLink.
None
Off The module is configured but not
receiving valid data from SynchLink.
Verify that cables are
securely connected.
The module is configured but not
enabled to transmit on SynchLink.
Enable module
transmitter.
Module is powered down. Power the module.
LED
Indicator
Display Means Take this Action
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