7.3 Programming in Sequential Function Chart (SFC)
This section explains how to create programs (SFC programs) in Sequential Function Chart
compliant with IEC 61
131-3, the international standard for PLC programming languages.
● To create SFC programs, POU objects for SFC programs are required. Set the object setup
language to Sequential Function Chart (SFC).
● The SFC program editor is divided into the declaration section and implementation section.
Three elements are originally coded in the implementation section.
7.3.1 Inserting Elements from Menu
For example, step elements and transition elements can be inserted from the menu, as below.
1. Select the TRUE transition element in the implementation section.
The selected transition element will turn red.
2. Click the right mouse button and select
"Insert Step-transition After" from the context-
sensitive menu that is displayed.
7.3 Programming in Sequential Function Chart (SFC)
WUME-GM1RTXOP-01 7-19
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