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G-Code, CAD, and CAM discussions / Spindle speed control when changing direction

« on: February 28, 2011, 07:09:08 PM »

Looked around and searched the forum...

The spindle motor controller in my machine requires that the motor is stopped before changing direction.
Ideally before changing the spindle direction;
1) Spindle speed is set to 0
2) Wait for the shaft index pulse to read 0 RPM
3) Change the spindle direction
4) Spindle speed back to what it was...

Is there a way to do this with G-Code, or is this something that needs to be done in Mach3?
If in Mach3 any help with that?

Thanks
Derek Vanditmars