Ignore Limits option grayed out

Geosec wrote:

The initial activation of the limit switch operates properly, shutting off the machine. Checking the ignore limits checkbox allows the machine to be turned back on and the axis moved off the limit switch. The checkbox also clears. Now, with the checkbox unchecked, moving back onto the limit switch has no effect and the axis can be driven into the hard-stop and crashed. Though I didn't actually test crashing it.

I can reproduce this in a sim config. I'll have a look into this.

Thanks Hans,
Glad to hear you were able to reproduce it.

rodw wrote:

The limit switch should NEVER be inside soft limits. Think of its as an Oh shit, the world is falling in pin. It needs to be outside the soft limits and should never ever be hit unless something has gone terribly wrong!
 

I that sounds right to me, but I count on the limit switches to save me from my own stupid mistakes. My mill is small and on a stand with wheels because I need to be able to move it around in my tiny garage. It's not uncommon for me to turn it on solely to move the table out of the way. I do this without homing it cause it's faster. So, when it's not homed the soft limits are not valid.
Also, during setup I've accidentally entered a travel of 75.0 inches instead of 7.50 inches, which puts the limit switch inside the soft limit.
A lot of things should never happen, but this is life on earth as a human... and sometimes, $h** happens.

Geosec wrote:

Thanks Hans,
Glad to hear you were able to reproduce it.

Or maybe not. I think I can't test that with a sim config (or with the default sim config). The behaviour is wrong in the sim even with 2.8.0 which I am sure that it isn't on a real machine.

I've made a short video that shows the behavior I describing for anyone that's interested. It's not public (link required).



Video

HansU wrote:

Or maybe not. I think I can't test that with a sim config (or with the default sim config). The behaviour is wrong in the sim even with 2.8.0 which I am sure that it isn't on a real machine.

I just checked for the behavior on 2.8.0, and it's the same. Fails to act on the limit switch activation.

I have two PCs for the mill, a Lenovo thinkcenter (Core i5) with two SSDs. One is loaded with 2.8.0 and the other with 2.9. The second PC is a mini PC, a GK41 with a Celeron J4125 Processor (Minis Forum) also with two SSDs, one loaded with 2.8.4. The mini PC is the one I run for milling stuff, the other one is for testing.