Hello,
I urgently need some help. I have a Beckhoff BC9000 PLC which is controlling the lights etc. in my house.
Suddenly, overnight, the PLC isnot working anymore. BC9000 unit looks like it is functioning, but none of the outputs are working. I/O Error LED is flashing 8 times very rapidly (I think 8 times, too rapid difficult to count) and after that it blinks 4 times slowly, then stops blinking for some seconds. According to Twincat PLC control, PLC is in Run mode, but on PLC the I/O run LED is not green. When I push a light switch, I notice on the PLC that the input is received on the PLC, but according to Twincat PLC Control it is not.
My configuration is:
- BC9000
- 7 x KL1408 input slots
- 6 x KL2408 output slots
- KL9010 end bus terminal
Tried already the following things:
- Reboot (unplug/replug power)
- reset and reload program on unit
- replace KL9010 End bus terminal with another one
- ...
Many thanks in advance for your ideas.
Regards
Fredje
