Mitsubishi Electric MELSEC iQ-R Series User Manual page 655

No. Name
SM420 User timing clock No.0
SM421 User timing clock No.1
SM422 User timing clock No.2
SM423 User timing clock No.3
SM424 User timing clock No.4
SM440 On only initial I44
execution after RUN
SM441 On only initial I45
execution after RUN
*1 The following figures show operation examples of SM414/SM415 when a value in SD414/SD415 is changed.
Ex.
When a value in SD414 is changed from 3 to 10:
3s 3s
ON
SM414
OFF
SD414 3
(1) The elapsed time after the ON/OFF state of SM414 changes remains.
(2) Value change
Ex.
When a value in SD414 is changed from 10 to 3:
ON 10s
SM414
OFF
SD414
(1) If the new interval in SD414 has already elapsed after the last change of the ON/OFF state of SM414, the ON/OFF state
changes as soon as a value in SD414 is changed.
(2) Value change
Data stored Details
• This relay repeats on/off at specified scan intervals.
n2
• The initial state when the CPU module is powered on or
scan
reset is off.
n1
• The on/off scan interval is set using the DUTY
scan
instruction. (n1: ON scan interval, n2: OFF scan
interval)
• This relay is on during the first execution of the inter-
module synchronous interrupt program (I44) after RUN
ON
1 scan
mode starts and off during the second execution
OFF
onwards.
• Note that the relay status while the DI instruction is
executed is as follows: On during the first execution of
the inter-module synchronous interrupt program (I44)
after the DI instruction is cleared and Off during the
second execution onwards. (no change after the
second DI clear).
• This contact is enabled only for the inter-module
synchronous interrupt program.
• This relay is on during the first execution of the multiple
CPU synchronous interrupt program (I45) after RUN
ON
1 scan
mode starts and off during the second execution
OFF
onwards.
• Note that the relay status while the DI instruction is
executed is as follows: On during the first execution of
the multiple CPU synchronous interrupt program (I45)
after the DI instruction is cleared and Off during the
second execution onwards. (no change after the
second DI clear).
• This contact is enabled only for the multiple CPU
synchronous interrupt program.
(1)
10s
10
(2)
(1)
6s
10
(2)
10s
3s 3s 3s
3
Appendix 4 List of Special Relay Areas
Set by (setting
timing)
S (Every END)
S (Status change)
S (Status change)
A
APPX
653