Hi Jonathan,

Shielding the limit switch cables can stop RFI from the stepper motors causing false trip outs. Mk1 Z axis limits (longest leads) kept doing this and was very annoying. I had phonos on that machine, with single core shielded cable using the shield as part of the circuit. This might be the wrong approach, but phonos only have one connection plus earth.

Think I might be better with 2 core shielded, with the shield just earthed, not part of the trip switch but then which connector to use?

Ecat,
thanks, some more ideas there.