LD Components
The Ladder Diagram is also a graphics oriented programming language which approaches the structure of an electric circuit.
On the one hand, the Ladder Diagram is suitable for constructing logical switches, on the other hand one can also create networks as in FBD. Therefore the LD is very useful for controlling the call of other POUs.
LD component palette consists of:
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Components are used for operation in work area with grid layout. Every new component is added to separate table cell. Then it can be stretched into several cells.
Common Mechanisms
- Each component has points in the boundaries. Number of occupied cells can be increased due to these points;
- In case of component adding into succeeding cell, it's connected to the previous component if it's possible.
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