Programming Z probes connected to expansion boards is not yet supported. For now you need to temporarily connect the Smart Effector to the main board if you want to change its sensitivity. I've logged this issue: https://github.com/Duet3D/RepRapFirmware/issues/815

dc42 created this issue in Duet3D/RepRapFirmware open Support programming Smart Effector sensitivity when the effector is connected to an expansion board #815

@signpostman said in Mesh bed leveling Z Endstop switch:

@jay_s_uk If I want to use the CAN connection to eliminate the problem with the length of the wires, I may need the Tool Distribution Board.

Get the TDB - it makes the connection of power and CAN much easier and foolproof.

Frederick