If you haven't used Selmostudio before please follow the link:
Here you can see the modeled demo project in the Selmostudio.
In this demo we have 9 steps and 9 zones.
The steps describe how the machine works.
The zones represent all machine states and contain all important information for the system.
For safety reasons, certain components are locked against simultaneous movement.
For example, the drill should only drill if the workpiece is clamped.