The system layer contains the technical aspects and the interfaces to other systems. Learn how to link process signals and control outputs effectively.
In this video, we dive explicitly into the system layer and explore the different types of zones. Zones are critical to describing the state the machine should be in at each step. This layer is responsible for processing and controlling process signals, which are binary values representing the state of sensors or actuators.
Selmo Studio offers four different types of zones. The assignment of the zone types is crucial to define the different operands (zone states) for each zone.
- Zone In: Zone-In is used to integrate a sensor into an application. The sensor sends only an input signal to the system, which is monitored for high and low by the In and the delegated Zone-In. To fully protect a signal, an inverted Zone-In can be inserted
- Zone InOut: This zone switches an output and expects feedback that the function controlled by the output has been performed.
- Zone Out: This zone switches actuators and does not expect any feedback, i.e. it operates purely in digital logic. This zone is mainly used for lights and signals.
- Zone Mem: This zone is used as a marker to record executed process steps. It always consists of two zones, the first sets the marker to high and checks it, the second resets it and checks it to low.
Zone types make it possible to define and control different areas of a system. The system layer uses bit-controlled logic functions to link process signals and control the corresponding outputs. Each zone has individual settings to define specific properties.
In this video, you will learn how to use the different zone types - Zone In, Zone In-Out, Zone Out and Zone Mem - to define and control areas of your system. Knowing these zone types will enable you to link process signals and control outputs, which is critical to the efficient operation of your machine. The system layer is very important as it is used to define the valid states and actions for each logical process step through zones. Zones allow you to define exactly what should happen in each process step.
Once you have understood the assignment of zone types, you can move on to defining the various operands.
Stay tuned for our next video, in which we will take a closer look at operand execution!