Siemens SCL Language Programming Series Lecture 31- Queue Algorithm-EEWORLD

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The characteristic of the queue is that the data is first in, first out (FIFO for short). Queues are widely used in industrial sites, especially in the field of process control. FIFO is often used for logical control on the assembly line. The characteristics of the queue are: first, there must be data to be queued, and then tell the queue whether to enter or exit the queue. Of course, it is also necessary to determine whether the storage pointer of the queued data has reached the maximum position of the storage area. The queue storage area is generally an array of the PLC. The queue program needs to know the knowledge points of Variant data reference. If you want to understand, you can watch my previous videos. Enqueue is to store the data in the storage area in sequence, and exit is to clear the data in the storage area in sequence.

Touch screen screen:

FB program block parameter definition:

SCL main procedures:

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