APPX
Appendix 4 List of Special Relay Areas
809
A
*1 There are restrictions on the firmware version of the supported CPU module and software version of the engineering tool. ( Page
1008 Added and Enhanced Functions)
For details on SFC language, refer to the following.
MELSEC iQ-R Programming Manual (Program Design)
SM327 Output mode at execution
of the end step
Off: Hold step output off
On: Hold step output
retained
• When this relay switches to off, coil output
is turned off for steps (SC, SE, ST) for
which transition is established and that
are on hold reach the END step.
• When this relay switches to on, coil output
is retained (step becomes inactive) for
steps (SC, SE, ST) for which transition is
established and that are on hold reach the
END step. However, coils are turned off
following forced termination.
URn
*1
RnP
*1
SM328 Clear processing mode
when the sequence
reaches the end step
Off: Clear processing
performed
On: Clear processing not
performed
• Selects whether to perform clear
processing if an active step other than
those retained in the block exists when
the END step is reached. When this relay
switches to off, all active steps are forcibly
terminated, and the block is terminated.
When this relay switches to on, block
execution is continued as is. When the
END step is reached, if no active steps
other than those retained exist, all
retained steps are terminated, and the
block is terminated.
URn
*1
RnP
*1
SM329 Online change (SFC block)
status flag
Off: Not being executed
On: Being executed
This relay turns on while the online change
(SFC block) is being executed.
S (Status change) Rn
*1
No. Name Data stored Details Set by (setting timing) CPU
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