Hardware reference
HARDWARE REFERENCE MANUAL
175
Revision 5.0
3.9.2
LEDs description
/i
Label
Status
Description
RUN
off
Start-up test failed. Unit not operational.
Operation stopped. Fatal error.
on
Start-up test successful. Normal operation.
ERC
off
Normal operation
flashing
Start-up error
on
Fatal error in program.
Error occurred while Reading or Writing error log.
ERH
off
Normal operation.
flashing
I/O size not configured.
on
Error detected in communication with controller.
NWST
off
Start-up error or fatal error detected.
single flash
TJ1-CORT in stopped state.
flashing
TJ1-CORT in pre-operational state.
on
TJ1-CORT in operational state.
BF
off
No network error detected.
single flash
1
Warning limit reached.
At least one of the error counters of the CAN controller has
reached or exceeded the warning level (too many errors).
double flash
2
A remote error or a heartbeat event has occurred.
flashing
3
Invalid configuration.
on
A duplicate node address has been detected, or
the unit is in Bus OFF state.
1. Single flash: one 200ms pulse, followed by 1 second off.
2. Double flash: two 200ms pulses, followed by 1 second off.
3. LED flashing frequency: 2.5 Hz.