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1 FUNCTIONS
1.7 Redundant System Function
■
Precautions
• When it is desired to give priority to continuation of communication for multiple slave stations, set two slave stations
connected most closely to the master station (1) and the submaster station (2) as system switching monitoring target
stations (3). In this case, when an error is detected in communication with both system switching monitoring target stations,
a system switching request is issued to the control system CPU module.
• When the control system can communicate with either of the system switching monitoring target stations, a system
switching request is not issued.
• When there is an error in the system switching monitoring target station (1), even after system switching, communication
with the system switching monitoring target station is not possible.
Control system
Control system
(3)
(3)
(2)
(1)
(1)
Summary of Contents for MELSEC iQ-R04ENCPU
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Page 61: ...1 FUNCTIONS 1 3 IP Packet Transfer Function 59 1 ...
Page 385: ...383 I Transient transmission 15 ...
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