Outline - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
N:N Network
1.

Outline

This chapter explains the N:N Network.
1.1 Outline of System
The N:N Network allows connection of up to eight FX PLCs via mutually linked devices through
communication in accordance with RS-485.
1) One of three patterns can be selected according to the number of devices to be linked (except FX
FX PLCs).
1S
2) Data link is automatically updated among a maximum of eight FX PLCs.
3) The available total extension distance is 500 m (1640' 5") maximum (when only the 485ADP is used in
the configuration).
500 m (1640' 5") [50 m (164' 0") when 485BD is included]
FX PLC
Master station
+
Communication
equipment operating
in accordance with
RS-485
Bit devices
M1000 to M1063
M1064 to M1127
M1128 to M1191
M1448 to M1511
Word devices
D0 to D7
D10 to D17
D20 to D27
D70 to D77
The figure above shows the maximum number of linked devices. There are differences in the specifications and
limitations depending on the selected link pattern and FX Series.
System
8 units
FX PLC
Slave station No. 1
+
Communication
equipment operating
in accordance with
RS-485
Transfer
Bit devices
direction
M1000 to M1063
M1064 to M1127
M1128 to M1191
M1448 to M1511
Word devices
D0 to D7
D10 to D17
D20 to D27
D70 to D77
FX PLC
Slave station No. 2
+
Communication
equipment operating
in accordance with
RS-485
Transfer
Bit devices
direction
M1000 to M1063
M1064 to M1127
M1128 to M1191
M1448 to M1511
Word devices
D0 to D7
D10 to D17
D20 to D27
D70 to D77
1 Outline
1.1 Outline of System
0N
Important points and reference
chapter/section
.......
Number of linked units
Total extension distance
.......
For the specifications,
refer to Chapter 2.
To check applicable PLC
.......
models, refer to Section 1.3.
For selection,
.......
refer to Chapter 3.
For wiring,
.......
refer to Chapter 4.
The number of linked devices
.......
can be selected among three
patterns.
For details, refer to Chapter 2.
The link information can be
monitored in the master
station and all slave stations.
A
B
C
and
D
E
F
G
H
I
Apx.A
B-3