Yet another C3 Index Pulse Board/Mach 3 mystery.
I am building the typical 7 x lathe CNC project and can’t get my C3 card to lock up with Mach 3. Here is what I have:
1. 56mm diameter disc with single 3mm slot.
2. C3 Index Pulse Board with photo sensor.
I made sure Mach 3 sees signal only when slot is aligned with sensor, and I used Mach 3 to identify Pin #15 with its “Automated Setup of Inputs.” Index signal in Ports & Pins correctly shows Pin #15 with “Active Low” checked.
C3 red LED lights up when slot is in proper position AND Mach 3 flashes the signal when rotated by hand but no spindle speed is displayed when lathe is running. Mach 3 flashes the signal when the spindle is really slow, but the light is not on at higher speeds. The C3 LED appears to lock solid either at lower RPM or fast (light is steady on)
I have tried several different settings of “Index debounce” in the General Logic Configuration screen including; 0, 1, 2, 3, 10, 50 and the default setting of 100. I have not changed the “Debounce Interval” (currently shows 500)
I have also tried both the “active low” and “active high” jumpers on the C3 board but this does not appear to change anything.
Any thoughts?
Thanks,
Gary