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

System clock

The following is the list of safety special relay areas relating to the system clock.
No. Name
SA\SM400 Always on
SA\SM401 Always off
SA\SM444 On at the first safety
program execution
SA\SM1800 ON for only the first
safety program
execution after
system switching
(standby system to
control system)
Safety information
The following is the list of safety special relay areas relating to safety information.
No. Name
SA\SM1008 Safety refresh
communication
status of each
module (1st
module)
SA\SM1016 Safety refresh
communication
status of each
module (2nd
module)
SA\SM1024 Safety refresh
communication
status of each
module (3rd
module)
SA\SM1032 Safety refresh
communication
status of each
module (4th
module)
SA\SM1040 Safety refresh
communication
status of each
module (5th
module)
SA\SM1048 Safety refresh
communication
status of each
module (6th
module)
SA\SM1056 Safety refresh
communication
status of each
module (7th
module)
Data stored Details
This relay is always on.
ON
OFF
This relay is always off.
ON
OFF
This relay turns on at the first safety program
execution.
ON
First time only
OFF
This relay turns on only the first safety cycle
processing after the standby system was switched to
ON
First time only
the control system.
OFF
Data stored Details
Off: Normal The safety refresh communication status of the 1st
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1904) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1008 to SA\SD1015.)
Off: Normal The safety refresh communication status of the 2nd
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1905) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1016 to SA\SD1023.)
Off: Normal The safety refresh communication status of the 3rd
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1906) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1024 to SA\SD1031.)
Off: Normal The safety refresh communication status of the 4th
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1907) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1032 to SA\SD1039.)
Off: Normal The safety refresh communication status of the 5th
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1908) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1040 to SA\SD1047.)
Off: Normal The safety refresh communication status of the 6th
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1909) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1048 to SA\SD1055.)
Off: Normal The safety refresh communication status of the 7th
On: Communication error CC-Link IE Field Network module (the one whose
start I/O number is stored in SD1910) is stored. (The
safety refresh communication status of each safety
connection is stored in SA\SD1056 to SA\SD1063.)
Set by
(setting
timing)
S (Power-on to
RUN or STOP
to RUN)
S (Power-on to
RUN or STOP
to RUN)
S (Power-on to
RUN or STOP
to RUN)
S (Status
change)
Set by
(setting
timing)
S (Status
change)
S (Status
change)
S (Status
change)
S (Status
change)
S (Status
change)
S (Status
change)
S (Status
change)
Appendix 6 List of Safety Special Relay Areas
CPU
RnPSF
RnSF
RnPSF
RnSF
RnPSF
RnSF
RnPSF
CPU
RnPSF
RnSF
A
RnPSF
RnSF
RnPSF
RnSF
RnPSF
RnSF
RnPSF
RnSF
RnPSF
RnSF
RnPSF
RnSF
APPX
883