Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 380

■Pattern 3
Slave station
Communication
status
System A Master station
Station No.0
System A
Sequence scan time
Master station
(SS)
Station No.0
Transmission interval
monitoring time (TM
Data sent from system A
master station to another
station
System A
System B
System B Master station
Station No.0
System B
Master station
Station No.0
Transmission interval
monitoring time (TM
Data sent from system B
master station to another
station
Data received from
Another system A master station
station or system B master
station
APPX
378
Appendix 7 Processing Time
Error
Normal communications Data link error
Error of slave
station is detected.
Control system master operation
System switching
monitoring time
(T
C
1 2
)
mst
0) 1)
Control system
Standby system
Standby system master operation
)
mst
Delay time until first safety output after system switching (T
Transmission delay time of safety communications
0)
Standby system master operation
System switching
request is issued.
)
3
2)
Standby system
Control system
System switching time (T
Control system master operation
1)
Safety data retention time (S
H
)
SW
Line switching time
4 5
)
so
4)
Transmission delay time of safety
communications
4)
)
6
5)
5)