7i76E + THCad 10V

Would a G53 move to the top of travel be a way to find a known-state?

Maybe not, But that would allow for the longest possible move up and the best chance of getting rid of the offset in one move.

Possibly that may also cause a limit switch to be triggered?

Rick G

In my situation homing did not help - the value remains inadequate. I should close application, clear stepper var files and last-position file, and only after restart application homing will reset to adequate value. I still have no clue what lead to the accumulatio of the error.. I have about 450 pierces on single sheet, and normaly I got error saying that next instruction will exceed z axis limit (in my case from -5 to +45 mm) after 50-100 cuts. I also noticed that when the thc is on from UI panel z axis does slight shift. From the thc comp code I didn't find anything what could make this happen.. magic..

Have you tried adding the extra Z move(s)?

Rick G

it's still not likely to happen positive offsets are removed at once

That was my understanding, I just wondered if the Z axis had very limited movement and the correction was greater than the available movement. But in that case it seems an error code is more likely than a limit switch.

By the way the THC works great for me.

Rick G

Yes, it seems everythign works fine now. I have increased move by z for 10 mm and reduced maximum speed for the z axis twice.

Great!

Rick G