Need help: Shared limit/home switches

[adt2]

So I'm about five minutes from testing out my first machine for the first time. However, my limit/home switch arrangement isn't working. I suspect it's a software setting I missed.

My X-axis home switch is also the limit switch on that end of the machine. When I do the "Auto-Identify Ports and Pins" deal and activate the limit switch, it is immediately identified. Am I supposed to repeat that procedure for the X limit switch? In other words should I make them the same thing? Repeat the auto identify process, select X limit and trip the same switch?

[ger21]

The limit and home should both be set to the same pin, but I've never used the auto setup, so can't help with that.

[adt2]

Okay, thanks. That's what I thought. Machine now trips/stops when the limit/home switch is hit.

Next question: I can't jog the machine back off the switch when it trips. When I click "Reset" I get an error message about reversing some settings somewhere. I have no idea what that's about.

Also: I've seen mentioned elsewhere a "homing routine"; how would I implement that in Mach? By that I mean, how would I set the software up to automagically square the gantry using the X and A home/limit switches?

Thanks for your help.

[ger21]

Next question: I can't jog the machine back off the switch when it trips.

There are two options on the Settings page.
1) Manual limit override, which needs to be enabled each time a limit is hit.
2) Auto Limit Override, which allows you to jog off a switch any time you hit one.

By that I mean, how would I set the software up to automagically square the gantry using the X and A home/limit switches?

If you have an X and A home switch, and the axis are slaved, it should do it automatically.
But, you must make sure that "Home Slave with Master", in General Config, is NOT checked.

I've heard some say that the default homing script does not square the axis for them, and they need to modify the homing script to use RefCombination(9) (for X and A) to home the slaved axis together.
You can edit the script by choosing Operator >Edit Button Script and clicking the ref all button.

I have some info on editing the homing scripts in my screenset manual here, pages 16-17