Mitsubishi MELSEC Q Series - Page 1166

App-158
(3) System clock/counter
Number Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM400 Always ON This relay is always on.
S (Every END
processing)
M9036
QCPU
LCPU
SM401 Always OFF This relay is always off. M9037
SM402
After RUN, ON for
1 scan only
• This relay turns on for one scan after the
CPU module enters the RUN status.
• This relay can be used only in a scan
execution type program.
• When an initial execution type program is
used, this relay turns off at the END
processing of the scan execution type
program in the first scan after the CPU
module enters the RUN status.
M9038
Qn(H)
QnPH
QnPRH
QnU
LCPU
This relay turns on for one scan after the CPU
module enters the RUN status.
New Q00J/Q00/Q01
SM403
After RUN, OFF
for 1 scan only
• This relay turns off for one scan after the
CPU module enters the RUN status.
• This relay can be used only in a scan
execution type program.
• When an initial execution type program is
used, this relay turns on at the END
processing of the scan execution type
program in the first scan after the CPU
module enters the RUN status.
M9039
Qn(H)
QnPH
QnPRH
QnU
LCPU
This relay turns off for one scan after the CPU
module enters the RUN status.
New
Q00J/Q00/Q01
SM404
Low speed
execution type
programON for 1
scan only after
RUN
• This relay turns on for one scan after the
CPU module enters the RUN status.
• This relay can be used only in a
low-speed execution type program.
Qn(H)
QnPH
SM405
Low speed
execution type
programAfter
RUN, OFF for 1
scan only
• This relay turns off for one scan after the
CPU module enters the RUN status.
• This relay can be used only in a
low-speed execution type program.
SM409 0.01 second clock
• This relay repeatedly turns on and off at 5-
ms interval.
• This relay starts with off at power-on or
reset of the CPU module. (Note if the
specified time has elapsed, on/off status
will change even during program
execution.)
S (Status
change)
Qn(H)
QnPH
QnPRH
QnU
LCPU
ON
OFF
ON
OFF
ON
OFF
1 scan
ON
OFF
1 scan of scan
execution type
program
Initial
execution
type program
ON
OFF
1 scan
ON
OFF
1 scan of scan
execution type
program
Initial
execution
type program
ON
OFF
1 scan
ON
OFF
1 scan
0.005s
0.005s