LEDs
FC510x - LEDs
LED behavior
The main card states can be quickly diagnosed by means of the red Error LED and the green Run LED:
Error LED (red) | Run LED (green) | Meaning |
|---|---|---|
off | off | TwinCAT is stopped |
off | on | All configured bus devices are error-free (box state = 0); TwinCAT task or process is running. |
off | flashes at 2 Hz | The task whose process data are linked to the card is not running. All configured bus devices found and error-free (box state = 0) |
flashes at 2 Hz | on | At least one box state is not zero (e.g. device not found, wrong configuration, device fault), TwinCAT task is running |
flashes at 2 Hz | off | At least one box state is not zero (e.g. device not found, wrong configuration, device fault), TwinCAT task is not running. |
on | off | TwinCAT is running, CAN controller is Bus OFF. Physical CAN problem. Possible causes: e.g. missing termination resistor, bus line too long, wrong baud rate, node address assigned twice, wiring fault, short circuit. Restart required |
flashes at 20 Hz | flashes at 20 Hz | Configuration upload being carried out |
flashes at 20 Hz | off | Card is in STOP mode |