Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 133

■ Precautions
• When a program is resumed, the SFC program stop position is held but the status of the label or device used for an action
is not held. Therefore, if labels or devices are required to be held to start with previous status, set them to be latched.
• When a program is resumed with conditions other than the ones ((1), (3), (5) in the table) where the coil output of the coil
HOLD step [SC] is turned off, the coil HOLD step [SC] that holds the operation is restarted but the output is not turned on.
To continue the output, set the labels and devices required to be held to be latched. The on/off state of the output at the
time of changing STOP to RUN is determined according to the setting of "Output Mode Setting at STOP to RUN" of CPU
parameter setting. ( MELSEC iQ-R CPU Module User's Manual (Application))
• At power-off or reset, the intelligent function module is initialized. To resume a program, creating an initial program for the
intelligent function module in the block which is always active or in a sequence program is recommended.
• At power-off or reset, labels and devices are also cleared. When the SFC information device is set, the values are held only
when latch setting is performed.
• Depending on the timing, a program may be resumed after power-off or reset. If a program is started with initial status while
the start mode is set to Resume Start, an event indicates that a program cannot be resumed is stored in the event history.
To resume a program without fail, turn off SM321 or switch the operating status of the CPU module from RUN to STOP, and
then power off or reset the CPU module.
8 SFC PROGRAM
131
8.5 SFC Setting
8