Mitsubishi Electric MELSEC iQ-R04ENCPU, Руководство пользователя

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366
APPX
Appendix 7 Processing Time
■
Pattern 1
The following figure shows a timing chart for normal value.
3
1) 2) 0)
1 2
2) 1) 4) 0)
5 4
4) 3)
3
3)
Control system
Control system
Standby system
Standby system
System switching time (T
SW
)
Cyclic transmission delay time Cyclic transmission delay time
Another
station
Data link faulty station
Power down
Cyclic data retention time (T
H
)
Delay time until first output after system switching (T
jo
)
Delay time until system switching cause detection
Line switching time (L
SW
)
Control system master operation Standby system master operation
Control system master operation
System A
Master
station
Station No.0
System B
Master
station
Station No.0
Sequence scan
time (SS)
Data sent from
system A master
station to
another station
System A
System B
System B
Master station
Station No.0
Sequence scan
time (SS)
Data sent from
system B master
station to
another station
Data received
from system A
master station
or system B
master station
System A
Master
station
Station No.0