890
APPX
Appendix 7  List of Safety Special Register Areas
*1 A safety station interlock release request is executed when the bit rises, and the interlock status is then released. To release the 
interlock again, it is necessary to turn the request off and on again. After eliminating the cause of any communication errors, turn on the 
request with the CPU module. When performing safety communications between CPU modules, perform this operation with both CPU 
modules.
*2 If the safety communications do not start when the safety communication status keep performing safety initial communications (10H to 
15H), check the safety communications partner station status or network communication status.
SA\SD1632 
to 
SA\SD1639
Safety I/O hold 
status of each 
safety connection 
(5th module)
0: Not holding 
safety input/
output
1: Holding safety 
input/output
The safety input/output hold status of safety stations connected to the 
5th CC-Link IE Field Network module (the one whose start I/O number 
is stored in SD1908) is stored.
The bit arrangement of the safety connection number is the same as 
that of the 1st module. (Note that the SA\SD numbers differ.)
S (Status 
change)
RnPSF
SA\SD1640 
to 
SA\SD1647
Safety I/O hold 
status of each 
safety connection 
(6th module)
0: Not holding 
safety input/
output
1: Holding safety 
input/output
The safety input/output hold status of safety stations connected to the 
6th CC-Link IE Field Network module (the one whose start I/O number 
is stored in SD1909) is stored.
The bit arrangement of the safety connection number is the same as 
that of the 1st module. (Note that the SA\SD numbers differ.)
S (Status 
change)
RnPSF
SA\SD1648 
to 
SA\SD1655
Safety I/O hold 
status of each 
safety connection 
(7th module)
0: Not holding 
safety input/
output
1: Holding safety 
input/output
The safety input/output hold status of safety stations connected to the 
7th CC-Link IE Field Network module (the one whose start I/O number 
is stored in SD1910) is stored.
The bit arrangement of the safety connection number is the same as 
that of the 1st module. (Note that the SA\SD numbers differ.)
S (Status 
change)
RnPSF
SA\SD1656 
to 
SA\SD1663
Safety I/O hold 
status of each 
safety connection 
(8th module)
0: Not holding 
safety input/
output
1: Holding safety 
input/output
The safety input/output hold status of safety stations connected to the 
8th CC-Link IE Field Network module (the one whose start I/O number 
is stored in SD1911) is stored.
The bit arrangement of the safety connection number is the same as 
that of the 1st module. (Note that the SA\SD numbers differ.)
S (Status 
change)
RnPSF
No. Name Data stored Details Set by 
(setting 
timing)
CPU
ON OFF
OFF OFF
OFF
ON
ON
OFF
ON
Safety station interlock status
Safety station interlock release 
request
An error occurs in 
communications 
with a safety station.
A safety station 
interlock is 
released.
An error occurs in 
communications 
with a safety station.
A safety station 
interlock is 
released.
The relay is enabled 
on the rising edge.
The relay is enabled 
on the rising edge.