Parameter Change Example - Mitsubishi Electric MELSEC-A Series Manual

3
REPLACEMENT OF MELSECNET (II) AND /B (REMOTE I/O NETWORK)

3.5.2 Parameter change example

The following shows an example of how to change the LB/LW, LX/LY network parameters when
replacing the MELSECNET remote system with MELSECNET/H.
The MELSECNET remote system can be used in the following operation modes.
• MELSECNET mode
• MELSECNET II composite mode
(1) MELSECNET mode
The following shows the procedure for changing the parameters in the case of a MELSECNET mode 2-
tier system configuration.
A MELSECNET composite system comprising local stations and remote I/O stations is divided into a
PLC to PLC network and a remote I/O network in the MELSECNET/H.
Optical loop
MELSECNET mode 2-tier system configuration example
Master station
MELSECNET
A3ACPU
M
R1 R4
L2 L3
Remote I/O station
No.1
Optical loop
Network
1N 2
S
Local station Local station
No.2
MELSECNET/H
Q06UDVCPU
2R2
Network
1M 1/2M
P R
1 2
2R1
1N 3
S
Remote I/O station
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