Chapter 2 N:n Network; Outline Of System - Mitsubishi MELSEC iQ-F FX5 User Manual

2
N:N NETWORK
This chapter explains the N:N Network.
2.1

Outline of System

N:N Network allows connection of up to eight FX5 PLCs or FX3 PLCs via mutually linked devices through communication in
accordance with RS-485.
• One of three patterns can be selected according to the number of devices to be linked.
• Data link is automatically updated between up to eight FX5 PLCs or FX3 PLCs.
• The total extension distance is 1200m maximum. (only when the FX5-485ADP is used in the configuration)
• FX5 PLCs can set head device number for internal relay (M) and data register (D) for link.
FX5 PLC
Master station
Built-in
RS-485 port
Bit devices
(Device numbers: M0)
M0 to M63
M64 to M127
M128 to M191
M448 to M511
Word devices
(Device numbers : D100)
D100 to D107
D110 to D117
D120 to D127
D170 to D177
The link information can be monitored in the master station and all slave stations.
The figure above shows the maximum number of linked devices. There are differences in specification depending on the
selected link pattern and FX Series.
2 N:N NETWORK
16
2.1 Outline of System
1200m maximum (Distance varies depending on communication equipment type.)
Transfer
(Device numbers : M200)
direction
(Device numbers : D2000)
System
8 units
FX5 PLC
Slave station No.1
Built-in
RS-485 port
Bit devices
M200 to M263
M264 to M327
M328 to M391
M648 to M711
Word devices
D2000 to D2007
D2010 to D2017
D2020 to D2027
D2070 to D2077
FX3 PLC
Slave station No.2
RS-485 communication
equipment
Bit devices
Transfer
(Device numbers : Fixed)
direction
M1000 to M1063
M1064 to M1127
M1128 to M1191
M1448 to M1511
Word devices
(Device numbers : Fixed)
D0 to D7
D10 to D17
D20 to D27
D70 to D77