
Contents ILX69-PBS ♦ CompactLogix or MicroLogix Platform
User Manual PROFIBUS Slave Communication Module
Page 84 of 102 ProSoft Technology, Inc.
March 20, 2015
7.2 Hardware LEDs
The following section contains LED descriptions for the CompactLogix™ controller and the
ILX69-PBS.
7.2.1 CompactLogix LEDs
The CompactLogix™ PLC LEDs are described below.
One or more tasks are running; controller is in Run mode.
No task(s) running; controller is in Program mode.
One or more input or output addresses have been forced to
an On or Off state, however the forces have not been
enabled.
Recoverable controller fault
Non-recoverable controller fault:
Cycle power. The OK LED should change to flashing red.
If OK LED remains solid red, replace the controller.
Communicating to all devices
One or more devices not responding
Not communicating to any devices
Controller faulted
No activity; no I/O or communications configured
The indicator is constantly on
The indicator is constantly off
The indicator turns on and off cyclically
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