This is a demonstration for the mark detection and alignment function.
The first step shows machine connection and open the vision system.
Nect step I show the board thickness settings, PCB origin, Mark point 1, Markpoint 2 coordinates.
We can easy check every position using the camera.
What you can see in the video:
This is a recommend Fiducial design.
You can use 1.0mm, 1.5mm, 2mm mid pad for detection!
But don't forget the solder mask opening around!