mach3 soft limits

[dazp1976]

I haven't got physical limits installed on my mill yet so I only have soft limits to rely on.
I am in the process of dealing with physical ones atm.
I have to be much more careful to prevent crashes.

Home on my Z is at the top of column. It has another 71mm left going up and 255mm down. So soft limits are +70 & -254.
Y is table centered and X off center so softs are Y-92 &+ 92 (185mm total travel). X+175 & -320 (496mm total travel). Leaves 0.5mm either end.

The BIG problem is if/when you lose steps or lose position after a jam.
If I lose my home I lose my limits. I have to mess around finding my home again by hand and test all the limits before I can run again safely.

With physicals I could just jog to the switches and reset.

[Kitwn]

With physicals I could just jog to the switches and reset.

That's the whole point. Hit the "Home All" button and watch the machine do the work for you. It won't take long for you to save the amount of time spent on fitting the switches.

[JAZZCNC]

The BIG problem is if/when you lose steps or lose position after a jam.
If I lose my home I lose my limits. I have to mess around finding my home again by hand and test all the limits before I can run again safely.

You shouldn't be losing steps at all, if you are then you have motor tuning set up wrong or the machine is sticky. Hitting the e-stop while traveling fast lose you position.

I'd fit home switches before limit switches every time or better still have them share SW.