Mitsubishi Electric MELSEC iQ-R Series - System Clock

652
APPX
Appendix 4 List of Special Relay Areas
System clock
The following is the list of special relay areas relating to the system clock.
No. Name Data stored Details Set by (setting
timing)
SM400 Always On Always On S (Power-on to RUN/
STOP to RUN/every
END)
SM401 Always Off Always Off S (Power-on to RUN/
STOP to RUN/every
END)
SM402 After RUN, ON for 1 scan
only
• This relay is on during only one scan after RUN mode
starts.
• This relay is enabled only for the scan execution type
program.
S (Status change/every
END)
SM403 After RUN, OFF for 1
scan only
• This relay is off during only one scan after RUN mode
starts.
• This relay is enabled only for the scan execution type
program.
S (Status change/every
END)
SM409 0.01 second clock • This relay repeats on/off at 5ms intervals.
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM410 0.1 second clock • This relay repeats on/off at certain intervals.
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM411 0.2 second clock • This relay repeats on/off at certain intervals.
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM412 1 second clock • This relay repeats on/off at certain intervals.
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM413 2 second clock • This relay repeats on/off at certain intervals.
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM414 2n second clock • This relay repeats on/off at regular intervals specified in
SD414 (in units of seconds). (When the value in SD414
is changed, the elapsed time count that has started
when the ON/OFF state of SM414 last changed
continues, and the ON/OFF state changes when the
new specified time is elapsed.
*1
)
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
SM415 2n millisecond clock • This relay repeats on/off at regular intervals specified in
units of milliseconds on the SD415. (When the value in
SD415 is changed, the elapsed time count that has
started when the ON/OFF state of SM415 last changed
continues, and the ON/OFF state changes when the
new specified time is elapsed.
*1
)
• This relay does not turn on/off per scan, but turns on/off
whenever the specified time interval is reached.
• The initial state when the CPU module is powered on or
reset is off.
S (Status change)
ON
OFF
ON
OFF
ON
OFF
1 scan
ON
OFF
1 scan
0.005s
0.005s
0.05s
0.05s
0.1s
0.1s
0.5s
0.5s
1s
1s
n s
n s
n ms
n ms