Mitsubishi Electric MELSEC iQ-R Series User Manual page 188

■Pattern 5
Control station
Station No.1
'Data link error
status of own
station'
System A (SB0049)
Control
station
Station No.1
Sequence
scan time
(SS)
Data sent from
station No.1 to
another station
System A
System B
System B
Normal
Sequence
station
scan time
Station No.2
(SS)
Data sent from
station No.2 to
another station
Receive data
in another
Another
station (from
station
station No.1
or No.2)
APPX
186
Appendix 6 Processing Time
Communication
error occurred
Control station
OFF
1
0) 1)
Control system
Standby system
Cyclic transmission delay time
0)
Communication faulty station
Data link
monitoring
time
ON
System switching
request is issued.
System
switching
monitoring
time
2 3
1)
Cyclic data holding time (T
Delay time until system switching cause detection
Standby system
Control system
System switching time (T
sw
Delay time until first output
after system switching (T
4
Cyclic transmission
delay time
)
H
)
)
jo
5
4) 5)
4)
5)