Limit Switch Errors

[KLWestfall]

i get the following codes sometimes while running. Sometimes by clearing the code will help, sometimes re-homing, and sometimes by turning it off and restarting. That sucks because then I have to start over...

Anyone know what causes or why I get it? I've blown out all limit switches, cleaned out the E-stop and out of ideas...

Thanks.

IMG_2307.jpg (701.53 KiB) Viewed 1493 times

[4DThinker]

If you've had your machine awhile, the best solution is to replace the switches. Limit 0 is the X axis and those switches are on the ends of the gantry beam. I oversee three Probotix CNCs and my students have a tendency to jog the Z axis to the top before homing the machines which eventually bends/fatigues the Z switch until it can open up easily with vibration during a cut. The X axis on our Nebula is also finicky. Sometimes pulling off the cable ends and giving the switch terminals a quick scratch with steel wool will help, as will squeezing/crimping the connector a bit once in place. In some cases we've eventually just soldered the cables to the switches.

Let me know if any of the above helps.

4D

[hemicro]

Also check the grounding between machine and computer. If the ground is not very good, you can get some false switch readings.

[KLWestfall]

Thank you, I'll check those out. Appreciate the info.