Hi All,
I’m setting up my small mill and I want to monitor the rpms of my spindle drive motor. It’s easy to use the “index” option in the “input pins” for a once per revolution reading but there seems to be no way to scale the result.
Here’s what I did to test it out. I sent a 100 Hz. Pulse, 3msec. width, 5 Vpk to pk, from an Agilent ARB.waveform generator to an LPT port (I used pin 11) to see what Mach 3 would show. It showed 6000 rpms. That translates to 1/100 = 10 msec for each pulse or as expected 100 pulses per second at 60 sec = 6,000.
That’s all well and good but I want to set up a disk with 6 or 8 divisions for better accuracy.
Art’s information says you can use the “timing” in the “input pins” config. but he gives no information on how to do this that I can find.
If I set the timing pin to a port, say the same port I used for the index I get no rpm reading in Mach 3 for spindle rpms. I can set both the index and the timing pin to pin 15 but this just gives me my 6,000 rpms. If I go to the “Calibrate Spindle” screen the “pulses per revolution” can not be changed, so there must be something I’m missing.
I did go into the pulley section but this is not applicable to this.
Any help is appreciated.
I wish Art would straighten this out or give us a method to resolve it. I’ve searched extensively and no one seems to have an answer for this.
Thanks,
Rob