I see you posted topic "PLC clear procedure - PF LED has not light up"

is it the same machine system? Please make clear story.

Otherwise I will give your simple answer---if you are sure I/O module is good and cable is good--then you need replace CCU module or get someone repair the interface to I/O module.

Stilpenza

Hello all.

I have the machine with CNC 810D. It does not work.

Signals do not transmit between CCU module and I/O module. What can cause it?

Thank you.