Mitsubishi MELSEC Q Series User Manual page 266

8 PROGRAMMING
Number Name
Host master/standby
SB007B
master operation
(5E7 , b11)
H
status
Slave station
refresh/compulsory
SB007C
clear setting status in
(5E7 , b12)
H
case of PLC CPU
STOP
Other station data link
SB0080
3
status
(5E8 , b0)
H
Other station
SB0081
watchdog timer error
(5E8 , b1)
H
status
SB0082 Other station fuse
(5E8 , b2) blown status
H
SB0083 Other station switch
(5E8 , b3) change status
H
SB0090
Host line status
(5E9 , b0)
H
SB0094 Transient
(5E9 , b4) transmission status
H
Master station
SB0095
transient transmission
(5E9 , b5)
H
status
SB00B4 Standby master
(5EB , b4) station test result
H
3: The other station data link status (SB0080) takes up to 6 seconds to turn on after a slave station connected
to the master/local station becomes faulty.
The time to turn ON differs according to the system configuration, faulty status or other conditions.
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Table 8.5 Link special relay list (5/5)
Description
Indicates whether the host operates as the master or standby master
station.
OFF: Operates as the master station (controlling data link)
ON : Operates as the standby master station (standby)
Indicates the parameter-set slave station refresh/compulsory clear
setting status in case of PLC CPU STOP.
OFF: Refresh
ON : Clears compulsorily
Indicates the communication status between remote/local/intelligent
device/standby master stations.
OFF: All stations normal
ON : Faulty station exists (information is stored in SW0080 to
SW0083)
Indicates the occurrence of a watchdog timer error in other stations.
OFF: No error
ON : Error occurrence.
Indicates the fuse blown occurrence status at other stations.
(SW0088 to SW008B)
OFF: No error
ON : Error occurrence.
Detects changes in setting switches of other stations during data
linking.
OFF: No change
ON : Change detected.
Indicates the line status of the host.
OFF: Normal
ON : Abnormal (line disconnection)
Indicates whether there is a transient transmission error.
OFF: No error
ON : Error occurrence.
Indicates the transient transmission status of the master station.
OFF: Normal
ON : Abnormal
Stores the test result of Line test 1/Line test 2.
OFF: Normal
ON : Abnormal
MELSEC-Q
Availability
( : Available, : Not available)
Online
Master station Local station
Offline
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