Mitsubishi Electric MELSEC iQ-R Series Configuration Manual page 171

MELSECNET/H network module
■ Network configuration
The module can be used in PLC to PLC network, using the following network configurations.
• Single network system
• Multiple network system
When the redundant system is configured with the MELSEC-Q series Redundant CPU (QnPRHCPU) on the
PLC to PLC network, the MELSECNET/H network module which is controlled by the RnCPU can be used as
a normal station only. In addition, the QJ71NT11B cannot be used in the redundant system.
Control
system
QnPRHCPU
QCPU
■ Function difference
• The module cannot be used in the simple dual-structured system.
• Set parameters for the MELSECNET/H network module mounted on the RQ extension base unit because the
MELSECNET/H network module does not have default parameter settings under no parameter setting.
• The transient transmission cannot be performed at CPU module error. Therefore, the description of the error of the
corresponding station cannot be checked from other stations. Check the error description by connecting an engineering
tool to the CPU module where the error has occurred.
• The interlink data transfer function cannot be used. Use a link refresh and a program instead. The following figures show
the example of the interlink transmission where data are transferred from network No.2 to network No.1.
CPU module
B
B0
(1)
(2) B100
B200
(1)
W
W0
(1)
(2) W100
W200
(1)
Tracking cable
Standby
system
Control
QnPRHCPU
station
MELSECNET/H
Normal
RnCPU
station
Network No.1 Network No.2
LB LB
LW LW
Normal
station
Normal
station
(1) Link refresh
(2) Data transfer using a program
Appendix 5 How to Use MELSEC-Q Series Modules
A
APPX
169