Connection Diagram - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
N:N Network
4.3

Connection Diagram

Use one-pair wiring for an N:N Network.
FX -485-BD
3U
FX -485-BD
3G
FX -485-BD
2N
FX -485-BD
1N
FX -485ADP(-MB)
3U
SDA
(TXD+)
SDB
Terminal
(TXD-)
resistor:
110 
RDA
*3
(RXD+)
RDB
(RXD-)
SG
*1 Make sure to perform Class-D grounding on the shield of a twisted pair cable connected to the FX
FX -485-BD, FX -485-BD, FX
3U 3G
*2 Make sure to connect the
If the grounding terminal is not provided in the PLC, perform Class-D grounding directly.
*3 Make sure to provide a terminal resistor at the end of each line.
 The FX -485-BD, FX
3U
switch accordingly.
 The FX -485ADP, FX
0N
FX -485ADP
0N
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
LINK
SG
*2
FG
(resistance: 100  or less)
-485ADP or FX -485ADP(-MB).
2NC 3U
FG
terminal to the
-485-BD and FX -485ADP(-MB) have a built-in terminal resistor. Set the terminal resistor selector
3G 3U
-485ADP, FX -485-BD and FX
2NC 2N
FX -485-BD
3U
FX -485-BD
3G
FX -485-BD
2N
FX -485-BD
1N
FX -485ADP(-MB)
3U
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
Class-D grounding Class-D grounding
(resistance: 100  or less)
*1
(grounding) terminal in the PLC requiring Class-D grounding.
-485-BD are supplied together with terminal resistors.
1N
4 Wiring
4.3 Connection Diagram
FX -485ADP
2NC
SDA
(TXD+)
SDB
Terminal
(TXD-)
resistor:
110 
RDA
(RXD+)
RDB
(RXD-)

SG
*1
-485-BD, FX -485-BD,
2N 1N
B-23
A
B
C
*3
D
E
F
G
H
I
Apx.A