Mitsubishi Electric FX3U-232-BD - Connection Diagram

B-23
FX Series PLC User's Manual - Data Communication Edition
N:N Network
4 Wiring
4.3 Connection Diagram
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.A
Discontinued models
4.3 Connection Diagram
Use one-pair wiring for an N:N Network.
Terminal
resistor:
110 
Class-D grounding
(resistance: 100  or less)
*1
Class-D grounding
(resistance: 100  or less)
*1
FX 2NC -485ADP
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)

SG
FX
3G -485-BD
FX
3U-485-BD
FX
2N -485-BD
FX
1N -485-BD
FX
3U -485ADP(-MB)
FX
3G -485-BD
FX
3U-485-BD
FX
2N -485-BD
FX
1N
-485-BD
FX
3U -485ADP(-MB)
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
FX
0N -485ADP
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
LINK
SG
FG
*2
Terminal
resistor:
110 
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
*3 *3
Make sure to perform Class-D grounding on the shield of a twisted pair cable connected to the FX2N-485-BD, FX1N-485-BD,
FX
3U-485-BD, FX3G-485-BD, FX2NC-485ADP or FX3U-485ADP(-MB).
FG Make sure to connect the terminal to the (grounding) terminal in the PLC requiring Class-D grounding.
If the grounding terminal is not provided in the PLC, perform Class-D grounding directly.
Make sure to provide a terminal resistor at the end of each line.
 The FX
3U-485-BD, FX3G-485-BD and FX3U-485ADP(-MB) have a built-in terminal resistor. Set the terminal resistor selector
switch accordingly.
 The FX
0N -485ADP, FX 2NC -485ADP, FX 2N -485-BD and FX 1N -485-BD are supplied together with terminal resistors.
*2
*1
*3