Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 132

SFC program start mode setting
Set whether to start with initial status (Initial Start) or to start holding the previous execution status (Resume Start) at the start-
up of SFC program.
[CPU Parameter][SFC Setting][SFC Program Start Mode Setting]
Window
Displayed items
Setting
Initial Start
(default)
Resume Start
Whether to start an SFC program with initial status or the previous execution status is determined by the combination of the
SFC program start mode setting and the SM322 (SFC program start mode) status.
Operation
(1) SM321 is turned off and on.
(2) CPU module is powered off and
on.
(3) SM321 is turned on and off, or
CPU module is powered off and
on after changing the operating
status from RUN to STOP.
(4) CPU module is reset and the
operating status is changed to
RUN.
(5) SM321 is turned on and off, or
CPU module is reset and the
operating status is changed to
RUN after RUN to STOP.
(6) Operating status is changed from
STOP to RUN.
(7) Operating status is STOP, write a
program, and the status is
changed to RUN.
*1 The initial status of SM322 is determined when the operating status of the CPU module is changed from STOP to RUN according to the
setting of the SFC program start mode.
*2 When the Resume Start is set for the SFC program start mode, a program is resumed unless there is any change before and after
program writing.
*3 The on/off state of an action is determined according to the setting of "Output Mode at STOP to RUN" of parameter setting.
*4 Depending on the timing, a program cannot be resumed and starts with initial status.
8 SFC PROGRAM
130
8.5 SFC Setting
Description
The program is started after the active state at a previous stop is cleared.
The operation after a start is performed according to the start condition setting of the SFC setting. ( Page 132 Start
condition setting)
The program starts while holding the active state at a previous stop.
SFC program start mode setting: Initial Start
SM322: OFF
*1
(Initial status)
Initial Start
*3
Resume Start
*2
Initial Start
SFC program start mode setting: Resume
Start
SM322: ON SM322: ON
(When the setting is (Initial status)
changed)
Resume Start
Resume Start/Initial Start
Resume Start
Resume Start/Initial Start
Resume Start
SM322: OFF
*1
(When the setting is
changed)
Initial Start
*4
*4