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6 MOTION SFC PROGRAMS
(3) Instructions for the Motion SFC charts
Any Motion SFC chart that will be meaningless to or conflict with the definition of
Y/N transitions will result in an error at the time of editing (or Motion SFC chart
conversion). Their patterns and instructions will be given below.
(a) When "Shift Y/N" or "WAIT Y/N" is connected as a selective branch or
parallel branch: Error
• "Shift Y/N" used as selective branch • "WAIT Y/N" used as selective branch
• "Shift Y/N" and "WAIT Y/N" used as
parallel branch
• "Shift (or WAIT) Y/N" used with other
step/transition as parallel branch or
selective branch
(b) When a coupling precedes "Shift Y/N" or "WAIT Y/N: Provide "coupling-
branch continuation" in between.
• Direct coupling with "Shift Y/N" or "WAIT
Y/N" is not allowed.
• Provide "coupling-branch continuation" in
between.
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