IEC 61499 program cycle times
IEC 61499: Distributed and event-driven process programming
Article REF: S8031 V1
IEC 61499 program cycle times
IEC 61499: Distributed and event-driven process programming

Author : Nicolas JOUVRAY

Publication date: March 10, 2008 | Lire en français

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6. IEC 61499 program cycle times

In IEC 61499 programs, the total execution time depends on the cycle execution of multiple resources and individual IEC 61499 function blocks. For example, when using the basic IEC 61499 function blocks, the diagram comprising FB1, FB2, FB3 and FB4 completes its execution after a minimum of four complete cycles of each resource. Each resource cycle executes the steps of an execution control diagram until a transition is reached.

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