System Clock - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

System clock

The following is the list of special relay areas relating to the system clock.
No. Name
SM400 Always On
SM401 Always Off
SM402 After RUN, ON for 1 scan
only
SM403 After RUN, OFF for 1 scan
only
SM409 0.01 second clock
SM410 0.1 second clock
SM411 0.2 second clock
SM412 1 second clock
SM413 2 second clock
SM414 2n second clock
APPX
810
Appendix 4 List of Special Relay Areas
Data stored
ON
OFF
ON
OFF
ON
1 scan
OFF
ON
1 scan
OFF
0.005s
0.005s
0.05s
0.05s
0.1s
0.1s
0.5s
0.5s
1s
1s
n s
n s
Details
Always On
Always Off
• This relay is on during only one scan after
RUN mode starts.
• This relay is enabled only for the scan
execution type program.
• This relay is off during only one scan after
RUN mode starts.
• This relay is enabled only for the scan
execution type program.
• 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.
• 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.
• 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.
• 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.
• 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.
• 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
*1
time is elapsed. )
• 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.
Set by (setting CPU
timing)
Power-on to RUN or ALL
STOP to RUN
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL
S (Status change) ALL