[Darc]

I want it so no one can accidentally turn them off.
I tried the LOCK but it doesn't lock the software limit button.

[ger21]

Use screen designer, and save a copy of the screens. Delete the softlimits button. In Mach3, make sure the softlimits are on, then use View>load screens, and switch to the screens without the softlimits button. If you need to turn them off, just switch back to the original screens.