M66 doesn't work

Hi all
Im new to linuxcnc and pathpilot is my first try, i got everything to work accept M66

I tried this code to check the spindle orientation, the code will run again if orientation signal is false


My input signal in status tab still function, i checked it's work fine


This is my hal file


Im stuck with this more than 2 days, i tried all M66 example i can find but it's still not work
when the code run to M66 line the cycle is stop

Please help me what i did wrong ?

thanks for reading

Are you sure pilotpath support M66?. Pilotpath doesn't use the exact same code as linuxcnc so it's hard for the linuxcnc project developers to comment.
Hopefully a pilotpath user can help.

im not sure pathpilot support M66 cause i've changed to linuxcnc from mach3 for 3 months, i use old version pathpilot v2.0.0

i tried M66 example on tormach manual so i guess it does support M66
tormach.com/wait-on-input-m66

thanks for your reply cmorley

So what is it that makes your digital input go high? You might be waiting for something that never happens?

I use mach 3 board for usb io port, when the port go low the usbio inputs light's up

I realy dont understand your question but do you mean even if usbio inputs light's up, M66 still may not work ?