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9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12
TROUBLESHOOTING
12.6 Special Relay List
12 - 82
(8) CC-Link IE Field Network
* 1: This applies when the serial number (first five digits) of the CPU module is "13042" or later.
Table12.19 Special relay
Number Name Meaning Explanation
Set by
(When Set)
Corresponding
CPU
SM1400
Setting status
of safety
communication
with master
station
OFF : Not set
ON : Set
The setting status of safety communication with
the master station is stored.
S (Initial)
QS
*1
SM1420
Safety refresh
communication
status of each
safety station
OFF : Normal (excluding
safety refresh
communication
with the master
station)
ON : Communication
error
The safety refresh communication status with
each safety station (excluding the master
station) is stored. (The status of each safety
station is stored in SD1420 to SD1427.)
S (Status change)
SM1421
Safety refresh
communication
status of safety
master station
OFF : Normal or safety
communication
with master station
on CC-Link IE
Field Network not
set
ON : Safety refresh
communication
error
The safety refresh communication status with
the master station is stored.
When safety communication with the master
station is not set in parameter or own station is
the master station, this bit turns OFF.
SM1700
Safety master
station interlock
status
OFF : Not interlocked
ON : Interlocked
When an error is detected and an interlock is
activated, this bit turns ON.
SM1720
Safety master
station interlock
release request
OFF : I/O interlock of
safety station on
CC-Link IE Field
Network not
released
ON : I/O interlock of
safety station on
CC-Link IE Field
Network released
The safety station interlock status is released
by changing this bit from OFF to ON.
U