Mitsubishi Electric MELSEC iQ-R-R04CPU - System Clock

810
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)
CPU
SM400 Always On Always On Power-on to RUN or
STOP to RUN
ALL
SM401 Always Off Always Off S (Status change) ALL
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) ALL
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) ALL
SM409 0.01 second clock • This relay repeats on/off at 5ms intervals.
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
SM410 0.1 second clock • This relay repeats on/off at certain
intervals.
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
SM411 0.2 second clock • This relay repeats on/off at certain
intervals.
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
SM412 1 second clock • This relay repeats on/off at certain
intervals.
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
SM413 2 second clock • This relay repeats on/off at certain
intervals.
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
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
)
• The initial state when CPU module is
powered on or reset is off.
• This relay switches to on or off after a
specified time is elapsed even when the
program execution is in progress.
S (Status change) ALL
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