Good to all,
I have a problem on Citizen L7 20 alarm 2F on S2 spindle (SJ-2B4106T), M70 series CNC and MDS-D-SP-40 spindle drive.
I inverted the CN2 connector between the first and second spindle, the alarm moved to the first spindle.
Second spindle PLG problem.

With the oscilloscope on test points PA and PB I see the signals.

Do I have to calibrate the card or do I have to replace it?

Can you tell me how to proceed on Citizen machine?
I found the procedure but for Mazak machine.
What parameters do I need to change on Citizen?

Thanks everyone for the help.
Angelo