Homing and <goto zero> issues

[ger21]

You could probably check the reverse column for one motor, and home both the same direction. Probably several different ways of doing it.

[Red]

Ger21
You're right.  I have to take back my last post.  You were right the first time.
Somewhere along the line I reversed the A motor.
When I connected both the X and the A to gearing  I had the horrible grinding during jogging.
I corrected this by getting the motors configured so A was reverse of X and then jogging was fine.
I set up homing negative for both X and A, as you said previously.
I checked motor tuning: My A motor tuning was considerably different from X,
I copied and pasted the X motor tuning settings for steps, speed and acceleration to A and homing is now working smoothly.

So, I assume that Mach 3 will send the same step and Dir commands to the motor and its slave during normal operation  but this is not the case during homing? (i.e. homing is not slaved?)

[ger21]

Homing is not slave if you have separate switches. I somehow had different homing speeds setup once, and it took me a while to figure out what was going on.

If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.

[Red]

Homing is not slave if you have separate switches. I somehow had different homing speeds setup once, and it took me a while to figure out what was going on.

I don't feel quite so silly now

If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.

That's useful to know.  I had not seen that option

[Red]

If you want to use one home switch with a slaved axis, there's an option in General Config, "Home Slave with Master", which will slave them during homing.

Is this what the 3 axis version of the 2010 screenset does?

[ger21]

The Screenset doesn't really have anything to do with homing. You just modify the homing script to do what you want. I use the 3 axis screen with slaved X axis, and each axis has it's own switch. Even though the screen only display 3 axis of coordinates, you can still control 6 axis and use as many switches as you want.