It’s a bit hidden.
Click in GC on → Settings → Maslow Setting → Advanced Settings and scroll to the bottom.
Hope it helps.
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Thanks @Gero! I didn’t think it was a button (I thought it was a title). So I’ll restart and see…
Do you know if “2.0” are millimeters? I changed for 5.
There is always someone awake on this planet to answer a question about Maslow 
Great!
No idea, I think in the workshop I’ve set it to 20 
Experienced this same problem the other day when trying to run the calibration cuts for the first time on a new computer (old one died). The sled started moving to the top left corner to cut that first cut, and about halfway up the error came up. I didn’t have time to mess with it so I just cancelled calibration. It’s firmware and GC 1.15
@Didier I’ve been thinking that same thing for a while! Took me forever to discover that was a clickable button.
Unfortunately, the limit value wasn’t in question. So I deleted my work file and I loaded the “official” sled one, in case of bad values (incorrect speed in my GCode). But GroundControl does not start the engines, via Arduino. I also just downloaded the latests versions of firmware and GC (1.21), which has kept my calibration settings (thanks!). So the Arduino / Mac USB connection is good. The L / R / Z engine test fails, as well as pushing the arrows and Home button failed. I verified ports (connected), turned everything off, turned on, disconnected, reconnected. I do not see where the problem is. 
What happens if you press the “stop” button? It could be in the safe state which requires pressing stop to resume
It returns to its loaded position: 0.00 and 299.86 (I moved 3 times to 100mm)
Pushing the stop button a few times causes a slight change in value, without the motor running. 299.83, 299.85, …86 …88
I found the problem (shame on me). Incorrect connection of the card (power supply connected to the socket below)
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Hi All,
I am new and i am also having this problem. I am using Gc version 1.21 and firm ware 1.22. this i was my second try to cut my sled. I got a Alarm and it just keeps coming back. the router is in the wrong spot. I attached some photos.
When I push the green arrow it does not move and then the alarm comes on.Any ideas?
Doug
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Could there be an issue with power to the motors? What do you see when you press Actions -> test motors/encoders?
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Hi Bar,
I checked all the wires and they are plug in tight, I did a motor/encoders and the sled moved. The second time I tired it GC shut down. I updated firmware to 1.22 and ground control is 1.21. I get a massage that ground control is out of date and my not work with firmware.
Maybe I should reload GC?
Doug