Redundant Settings In A Redundant System - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

7 APPLICATION FUNCTIONS

7.10.4 Redundant settings in a redundant system

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In the redundant settings, set the operation mode of the network module installed in
the system B.
When the mode setting switch of the network module mounted to system B is set to
online (0 or 4), the mode selection of this parameter is valid.
Click on the Redundant
settings button.
(1) Using the redundant system in backup mode
To use the redundant system in backup mode, set the same operation mode as
that of system A for system B.
If the mode of the network module is different between systems A and B, an error
will occur in the redundant CPUs.
(2) Performing station-to-station or forward/reverse loop test
To perform station-to-station or forward/reverse loop test, set the mode of system
B according to the relevant test setting.
For detail, refer to Sections 4.7.1 and 4.7.2.
POINT
(1) Except the operation mode, use the same network parameters between
systems A and B.
(2) Set the mode of the network module mounted to system A in "Mode" on the
Network Setting screen.
(Redundant settings screen)
MELSEC-Q
For details on the
setting items,
refer to Section 5.2.5.
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