| 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 |
2 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; no application loaded; Main Code download required. Blink - 2 Hz = Download or Startup in progress, not ready for normal operation |
|
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 |
|
FC BUS |
Green |
Blink - 2 Hz |
Blink - 2 Hz = Data Transmission (normal communication) Off Steady = No Data Transmission (auto baud in progress) On Steady = Communication lost, waiting to join communication ring |
|
EOL |
Amber |
Off (Except on terminating devices) |
On Steady = EOL switch in ON position Off Steady = EOL switch in Off position |