Hello,
I have the machine Okuma OSP500L-G LB9.
Now chuck can not open/close when I foot switch and I try M83 is for chuck clamp, M84 unclamp in MDI mode but it not open/close.
I check the input signal of the foot switch on the diagnostic screen it is ok.
I check wire from on the board RU1 to solenoid valve it is ok.
I check 2 wire voltage on the solenoid valve it is signal number 40 is 0V, 41 is 24V and when I foot switch voltage no change
I'm replace new RU1 but it not open/close.
When I try MDI mode command M3S200 it alarm W07.

Please support for me.
Thank you.