Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Tommy C. on April 20, 2006, 10:59:56 PM

Title: SpindleRPM
Post by: Tommy C. on April 20, 2006, 10:59:56 PM

How do I set up Mach3 to tell me what RPM my spindle is turning with a simple interupt signal? It only has one notch so it would be one round per pulse.
 I just do not know where to set up the signal.
Thanks
Tommy C.

Title: Re: SpindleRPM
Post by: DAlgie on April 20, 2006, 11:45:25 PM

I am just working on this same thing, I used a PDMX spindle sensor and wired the signal up to the A axis home limit switch input on a Bob Cambell breakout board. The spindle sensor requires 5 volts but the breakout board had a 12 volt power supply for this sensor so I used a couple of resistors soldered in the wire to reduce this down to 5 volts. Set up the input signal for index to pin 15 in the ports and pins, at least that's what the cambell board uses for this input.