Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 367

7 APPLICATION FUNCTIONS
Control system
(system A)
Redundant Normal
CPU station
Q25H Control
CPU 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.
[When the redundant system using a Q4ARCP is the control station]
Control system
(system A)
Redundant Normal
station
CPU
Normal
Q25H
station
CPU
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(b) When connecting a redundant system as normal stations
1) Connecting a redundant system as normal stations to a
MELSECNET/10 including a QCPU (other than the redundant CPU)
station acting as a control station
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 reset network parameters.
Standby system
(system B)
Redundant
CPU
Tracking cable
QnA Normal
CPU station
2) When connecting a redundant system as normal stations to a
MELSECNET/10 including a Q4ARCPU
station
Set the network parameters for the control station (Q4ARCPU
Make the pairing setting of the redundant system using the PAIRSET
instruction at the control station (Q4ARCPU).
For details of the PAIRSET instruction, refer to the QnA/Q4AR
MELSECNET/10 Network System Reference Manual.
*1: It represents both a single and a redundant system Q4ARCPU.
Standby system
(system B)
Redundant
CPU
Tracking cable
QnA
Normal
CPU
station
[Setting of the previous control station]
1) Set the network parameters again.
2) Set pairing using the PAIRSET instruction.
[Setting of the redundant CPUs]
1) Install network modules of function version D or later
to the redundant CPUs, and set them as normal
stations.
2) Set the parameters for the redundant system using
Normal
GX Developer of version 8.18U or later.
station
AnU Normal
CPU station
[Setting of the redundant CPUs]
1) Install network modules of function version D or later
to the redundant CPUs, and set them as normal
stations.
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
*1
station acting as a control
Q4AR Q4AR
Control
CPU CPU
station
Normal
station
*1
) again.
Normal
station
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