Configuring the end-stops and homing

Keep hard limits disabled while testing inputs:

$21=0

Trigger each inductive sensor with metal and query status:

?

The exact status line can vary. Extra fields such as WCO: and coordinates are normal; only check whether the expected Pn: letters appear while an input is triggered.

Expected Pn: letters:

• X endstop reports Pn:X
• Y endstop reports Pn:Y
• Y2/A endstop reports the ganged Y2/A input
• Z endstop reports Pn:Z

The tested inductive sensors show triggered correctly in gSender when metal is near them.

Homing Settings

Use slow homing speeds while proving the setup:

$22=1
$23=3
$24=25
$25=100
$26=250
$27=3

Working observed homing behavior with $3=7 and $23=3:

• X homes to X-min
• Y homes to Y-min
• Z homes to Z-max
• Dual Y homes/squares using the Y and Y2/A switches

Start homing:

$H

Be ready to stop the machine during first tests. If an axis moves away from its switch, stop immediately and adjust $23.

After homing is reliable, hard limits can be considered:

$21=1

Do not enable hard limits until homing, switch polarity, and switch noise behavior are confirmed reliable.