Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 379

■Pattern 1
The following figure shows a timing chart for normal value.
System A Master station
Station No.0
System A
Transmission interval
Master station
monitoring time (TM )
mst
Station No.0
Data sent from system A
master station to another
station
System A
System B
System BMaster station
Station No.0
System B
Master station
Station No.0
Transmission interval
monitoring time (TM )
mst
Data sent from system B
master station to another
station
Data received from
Another system A master station
station or system B master
station
■Pattern 2
System A Master station
Station No.0
Sequence scan time
(SS)
System A
Master station
Transmission interval
Station No.0
monitoring time (TM )
mst
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 )
mst
Data sent from system B
master station to another
station
Data received from
Another system A master station
station or system B master
station
Control system master operation
1 2
0) 1) 2)
Control system
Standby system
Standby system master operation
Delay time until first safety output after system switching (T
Transmission delay time of safety communications
0) 1)
Control system master operation Standby system master operation
System switching
instruction is
executed.
1 2
0) 1)
Control system Standby system
Standby system
Standby system master operation
Delay time until first safety output
after system switching (T
Transmission delay time of safety communications
0)
Safety data retention time (S
Data link faulty station
Power down
3
Delay time until system switching cause detection
Standby system
Control system
System switching time (T
Control system master operation
Line switching time
)
so
2)
Safety data retention time (S )
H
Delay time until system switching cause detection
Control system
System switching time (T )
SW
Control system master operation
Line switching time
3
)
so
1)
)
H
)
SW
3 4 5
3) 4)
Transmission delay time of safety
communications
3) 4)
4 5
3) 4)
Transmission delay time of safety
communications
3) 4)
APPX
Appendix 7 Processing Time
A
377