Ran into something new to me today. I hit pause on a running job so I could check something. The spindle lifted as expected and then turned off after a few seconds. When I hit start again to resume the job the spindle did not restart but the Z axis started to move down. I hit pause again so as not to crash. I had to load a new file in order to get it to start again.
Is this normal?
What kind of machine are you running?
SO4XL 65mm spindle with VFD
In my experience with pause on my 4, it will retract slightly, turn off spindle, then fully retract. When you resume it will drop the bit down just above the cut, spool up the spinde, then dive in the last 5% and continue the cut. You might want to test out on something unimportant, but that’s what it’s done for me since as far as I can remember.
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Thanks for the info Scott… Thats exactly what mine did but I paused it again before it got to just above the cut. I thought it was going to go all the way down and crash. I’ll try it again tomorrow and see how it goes.
Is this in Carbide Motion?
When I click Pause, only the mouvement stop, the Spindle never stop over here. What am I missing?
The behaviour here depends on how Grbl was compiled for a given machine (the SO5 Pro adds Y-axis dual-homing, but deletes lift-on-pause/lower-then-continue) and possibly Carbide Motion version (not sure if it can insert commands or no).
I have a 5 Pro and use CM 649
Which behaves as you describe — the spindle stopping is part of lift-on-pause/lower-then-continue (or whatever it’s called in the code).
@TheWoodworker Yep that was it. I hit start after a pause and the spindle dropped to about an inch over the material, the spindle started and then moved all the way down to resume the cut.
Thanks for the help!
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It’s a little creepy the first few times that happens and then you remember it’s the normal behavior
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