Mitsubishi Electric MELSEC iQ-R04ENCPU, User Manual

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