8 SFC PROGRAM
8.4 SFC Setting
97
8
SFC Program Start Mode Setting
Set whether to start the SFC program in the initial status (Initial Start) or to start it holding the previous execution status
(Resume Start).
[CPU Parameter] [SFC Setting] [SFC Program Start Mode Setting]
The combination of SFC Program Start Mode Setting and SM322 (SFC program startup status) determines whether to
perform Initial Start or Resume Start.
*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 "SFC Program Start Mode Setting" is set to "Resume Start" and no changes are made to the program before and after the
program is written, the program is resumed.
*3 When the parameter is set to "Initial Start," the on state of M322 is invalid.
*4 Depending on the timing, a program cannot be resumed and starts with initial status.
*5 M322 is turned on, and the program is initialized.
Setting Description
Initial Start (default) The program is started after the active state at the previous stop is cleared.
The operation after the start is performed according to "Start Condition Setting" of the SFC Setting. (Page 98
Start Conditions Setting)
Resume Start The program starts in the active state at the previous stop.
When setting the resume start, install a battery to the CPU module. (Page 98 Precautions)
Operation SFC Program Start Mode Setting: Initial Start SFC Program Start Mode Setting: Resume
Start
SM322: OFF
(Initial status)
*1
SM322: ON
(When the setting is
changed)
SM322: ON
(Initial status)
*1
SM322: OFF
(When the setting is
changed)
(1) SM321 is turned off and on. Initial Start Initial Start
*3
Resume Start Initial Start
(2) The CPU module is powered off
and on.
Initial Start (M322 is turned
off, and the program is
initialized.)
Resume Start/Initial Start
*4
Resume Start/Initial
Start
*4*5
(3) SM321 is turned on and off, or the
CPU module is powered off and
on after the operating status is
changed from RUN to STOP.
Resume Start Resume Start
*5
(4) CPU module is reset and the
operating status is changed to
RUN.
Resume Start/Initial Start
*4
Resume Start/Initial
Start
*4*5
(5) SM321 is turned on and off, or
CPU module is reset and the
operating status is changed to
RUN after RUN to STOP.
Resume Start Resume Start
*5
(6) Operating status is changed from
STOP to RUN.
Resume Start
(7) Operating status is STOP, write a
program (other than the SFC
program), and the status is
changed to RUN.
Initial Start Resume Start Initial Start
(8) Operating status is STOP, write a
program (SFC program), and the
status is changed to RUN.
Initial Start
*2
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