@dc42 Thanks I fot it working with using sensorrs.endstops[2].triggerd.

If I wanted to use a input then I should use M950 and then sensors.gpIn[] should also work?

I am developing a PnP machine with a duet3d 6xd. On the PnP head I have a IR sensor, this will stay high if the head is past the mid position and will remain low if it is below the mid position. The Duet needs center the head, it will do this by checking this IR sensor and then turnin the motor in the correct direction to center the head. THis code I have written in my homez.g

G91                         ; Relative positioning
; Decide direction based on sensor state

if sensors.gpIn[0].value == 0
  echo "Sensor LOW — moving up to mid position"
  G1 H1 Z5 F600             ; Move up until sensor triggers
else
  echo "Sensor HIGH — moving down to mid position"
  G1 H1 Z-5 F600            ; Move down until sensor triggers
; Sensor is triggered — refine position
G1 H2 Z2 F300               ; Back off
G1 H1 Z-3 F200              ; Re-approach slowly
G90                         ; Absolute positioning

in config.g I have set up the pin as following:

M574 Z1 P"io2.in" S1 ; configure Y axis endstop

SO when I try to home the Z-Axis I get the following error: meta command: array index out of bounds.

chatgpt suggested to use

[^"io0.in"]

but this didnt help either. I dont know what is causing this problem, I hope someone can help me?