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Article | REF: S8031 V1

IEC 61499: Distributed and event-driven process programming

Author: Nicolas JOUVRAY

Publication date: March 10, 2008

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2. IEC 61499 basic function block format

Basic IEC 61499 function blocks are defined with SFC elements to develop their execution control scheme. The following example demonstrates the E_Merge function block, comprising an initial step, two transitions and a step.

Function block E_MERGE

Execution control diagram

SFC equivalent

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IEC 61499 basic function block format
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