Mitsubishi Electric Q Series Reference Manual page 335

7 APPLICATION FUNCTIONS
Control system
(system A)
Redundant Normal
CPU station
Q25H Control
CPU station
Control system
(system A)
Redundant Control
CPU station
Control
station
Q25H
CPU
Normal
station
[Setting of the previous control station]
1) Change the previous control station
to a normal station.
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2) When connecting a redundant system as normal stations
Replace the network module of the control station with a network
module of function version D or later (it is not necessary to change the
CPU module).
After changing the network module of the control station, use GX
Developer of version 8.18U or later to make the network parameter
setting again.
Standby system
(system B)
Redundant
CPU
Tracking cable
Q25H
CPU
(2) Connecting a redundant system to an existing MELSECNET/10
When connecting a redundant system to an existing MELSECNET/10, the
method for constructing a network depends on conditions (a) to (d) shown below.
(a) When connecting a redundant system as the control station
Change the previous control station to a normal station, and connect the
redundant system.
Set new network parameters at the redundant system using GX Developer
of version 8.18U or later.
Standby system
(system B)
Redundant
CPU
Tracking cable
QnA
Normal
CPU
station
[Setting of the redundant CPUs]
1) Connect a network module of function version D or
later to each of the redundant CPUs, and set it as a
normal station.
2) Set the parameters for the redundant system using
Normal
GX Developer of version 8.18U or later.
station
Normal
station
[Setting of the previous control station]
1) Replace the network module of the control station with
a network module of function version D or later.
2) Set the network parameters for the control station again
using GX Developer of version 8.18U or later.
[Setting of the redundant CPUs]
1) Install network modules of function version D or later
to the redundant CPUs, and set one of them as the
control station.
2) Set the parameters for the redundant system using
Normal
GX Developer of version 8.18U or later.
station
AnU Normal
CPU station
MELSEC-Q
Normal Q4AR
Q4AR
station CPU
CPU
Normal
station
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