I am trying to use either the DRV or UPF terminal as my spindle-at-speed signal to LinuxCNC via a Mesa 7i76. When I check across the DCM and DRV or UPF with my meter is reads a an open circuit. I tried wiring it like this and it does not work. Any idea how to wire these? I have PD050=01 and PD051=05 so both should be on when the spindle is running and at speed.
I'm using a 10k resistor instead of the 2k picture. The 7i76 side works if I short the leads that I'm hooking to DCM and DRV together.
Attachment 417844
Thanks
John