ProSoft Technology CLX-APACS - Manual (Page 46)

Page 40 QTS- CLX-APACS March 2015
Troubleshooting
ControlLogix Module LEDs
The module has three status LEDs to indicate the state of internal operations. The LEDs
are labeled NET, CLX and OK.
NET LED – IOBUS Status
The NET LED shows the status of I/O communication.
Monitor Mode
Color Meaning
Red Bad frame received
Green Receiving good frames
Off Idle
Master Mode
Color Meaning
Red Cable A error
Yellow Cable B error
Green Receiving good frames
Flashing One or more APACS modules offline
Off Idle, not trying to talk to APACS modules
CLX LED – ControlBus Status
The CLX LED indicates the status of communication with the ControlLogix processor.
Color Meaning
Green All required connections are open
Flashing
Green/Off
Not all required connections are open (master mode)
Yellow Connection 0 not open (master mode)