Français
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.
The following formula expresses the minimum total time required to execute a cycle of the above program:
Total time ≥ cycle time (ResourceA) × 2 + cycle time (ResourceB) × 2
The Ultimate Scientific and Technical Reference
This article is included in
Control and systems engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
IEC 61499 program cycle times
Standards
International Electrotechnical Commission IEC
- Function block – Part 1: architecture - CEI 61499-1:2005 - 01-05
- Function Block – Part 2: software tools requirements - CEI 61499-2:2005 - 01-05
- Functional block – Part 4: rules for profile compliance - CEI 61499-4:2005 - 08-05
The Ultimate Scientific and Technical Reference
