any list of code alarm?
@patlef - Welcome to the forum Patrick. That is an GRBL error code, gSender just passes it along. Search internet for GRBL error codes and you will find many references and hopefully an adequate answer.
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Ok i will do my search, thanks you!
I’ll add to Heyward’s words that recently I made up a page of the GRBL error and Alarm codes for easy reference in the gSender documentation so you can also feel free to check them out there too: