Error handling and diagnostics
FC5101 and FC5102
62
Version: 2.0
6
Error handling and diagnostics
6.1
LEDs
Fig. 47: 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
6.2
Bus Node Diagnostics
The CANopen fieldbus card FC510x has a comprehensive range of diagnostic options for connected
network nodes.
For each CANopen fieldbus node there is a node state input variable, which signals the status of the current
slave during the runtime and can be linked, for example with the PLC.
Fig. 48: Input variable Node State
