Topics

1

General Mach Discussion / Step and Dir Spindle and A axis with 1 motor 1 drive how?

« on: September 19, 2019, 03:57:26 PM »

I have a servo motor running as a spindle motor using step and direction outputs from Mach 3. This works well.  I also need the spindle motor to turn a tool changer when not cutting. I have used all my other outputs and I can only use the step and direction outputs for the spindle for the A xis. Same motor same drive. If I use the same pin numbers in Mach it complains that the spindle and the A use the same pins.
Is there a way to set up Mach 3 to use the same outputs drive and motor as a spindle and a rotary at the same time?

thanks,

2

Mach4 General Discussion / G93 Inverse Time

« on: January 14, 2019, 08:33:55 PM »

What is the F register limit for G93? I might need to go down to  F 0.001 Which is like 16.67 hours .
Seems a bit long of a time but for this contraption its kinda short.
I am looking at how to specify different feed rates on 3 rotary axis and no liner axis over a long period of time. Seems like G93 might be the only option.

thanks,
 

3

Mach4 General Discussion / Axis 0 Commanded while disabled

« on: January 01, 2019, 07:59:59 PM »

I tried using the search but it seems something is broke and I keep getting brought back to the forum index.
I am using the Return to Zero button and it works as expected but pops a "Axis 0 error while disabled"
This contraption has only 3 axis. All rotary. They are set up Axis 0 =A, Axis 1=B and Axis 2=C. So far running from MDI works as expected. The return to Zero does not.
---------------------------------------------------------------
-- Go To Work Zero() function.
---------------------------------------------------------------
function GoToWorkZero()
    mc.mcCntlMdiExecute(inst, "G00 A0 B0 C0")--Without Z moves
    --mc.mcCntlMdiExecute(inst, "G00 G53 Z0\nG00 X0 Y0 A0\nG00 Z0")--With Z moves
end

Any suggestions?

4

Mach4 General Discussion / continuous rotation in A B and C at the same time

« on: December 30, 2018, 10:33:58 PM »

I need to be able to rotate A B and C axis's continuously at various speeds. I can Jog each axis around and around as much as I want but can't to get it to go more than 360 using G code.
Any suggestions on how to set up the Gcode to do this?

thanks