EZABL SKR 1.4/1.4T Connection
Because of how BTT has their endstop filtering done on their boards it can make the EZABL not function correctly when connected to the Z endstop. You should use the “Probe” port instead of the “Z-STOP” port for connecting to the EZABL signal side.
You will still use the recommended EZABL settings for “Vanilla” Marlin but you will disable Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN and enable the USE_PROBE_FOR_Z_HOMING option in the firmware. These variables are in the Configuration.h file in Marlin firmware. This will tell the firmware to use the Probe header instead of the Z-STOP header for the probe signal line.
This information is provided as a courtesy to EZABL customers who want to use the SKR 1.4/1.4T boards with the EZABL kit. Because these are universal boards and not OEM ones, technical support for the EZABL kit does not cover getting your firmware setup for a SKR board. Please contact BigTreeTech for support on their board if you need help configuring it.