PLC series and parallel circuit block (ANB, and ORB) command for example

~ arcozhang
ANB multiple instruction block instruction “and“ operation. ORB multiple instruction block instruction “or“ operation.
“Example 1“ press the button X0 or X1, X2 or X3 then press the switch at the same time, bright led Y1. This control requires control ladder diagrams and instructions as shown in the table as shown in Figure 1.


“Example 2“ press the switches X0 and X1, or when you press the switches X2 and X3, led Y1. This control requires control ladder diagrams and instructions as shown in the table shown in Figure 2.


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