What is the difference between M0 and Y0?

1, M0 is an auxiliary relay, which is an intermediate quantity and is not directly output. Y0 is an output relay that can control external devices

2, M0 is a virtual point, and Y0 is a point corresponding to hardware.

3, M0 is the auxiliary relay coil (intermediate relay) Y0 is the output coil, one for the program, one for the output