Negative XY offsets in G31?



  • On my current X carriage, my IR probe sits 15mm to the left of the nozzle, and 21mm closer to the front of the bed than than the nozzle. My current config.g G31 line looks like this.

    G31 P500 X-15.5 Y-21 Z4.75

    now auto bed compensation crashes the carriage into the right side of the rail. Am I doing something wrong?



  • Sorry, I figured it out. To anyone with this issue, it threw off my bed.g. Adjust the probe points in there to compensate for the offset of the IR probe and it will work fine.


  • administrators

    I'm glad you solved it. The firmware tries to position the probe at the points you define in bed.g, taking account of the offset. So the coordinates you specify need to be reachable by the probe, not the nozzle.


 

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