| LED label | LED color | Normal LED state | Description of LED states |
|---|---|---|---|
|
POWER |
Green |
On Steady |
Off Steady = No Supply Power or the controller’s polyswitch/resettable fuse is open. Check Output wiring for short circuits and cycle power to controller. On Steady = Power Connected |
|
FAULT |
Red |
Off Steady |
Two blinks followed by long pause = Controller powered on in default state. For more information about this default state, see Input/Output Wiring Validation. Off Steady = No Faults On Steady = Device Fault or no application loaded Blink - 2 Hz = Startup in progress, not ready for normal operation Rapid blink = SA Bus communications issue |
|
SA BUS |
Green |
Blink - 2 Hz |
Blink - 2 Hz = Data Transmission (normal communication) Off Steady = No Data Transmission (N/A - auto baud not supported) On Steady = Communication lost, waiting to join communication ring |
|
ETH1 |
Green |
Off |
Off Steady = ETH1 is not connected Blinking = ETH1 connected and communicating |
|
ETH2 |
Green |
Off |
Off Steady = ETH2 is not connected Blinking = ETH2 connected and communicating |