Mitsubishi Electric FX3U-232-BD - Connection Diagram

C-29
FX Series PLC User's Manual - Data Communication Edition
Parallel Link
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
4.3.1 For FX3S, FX3G, FX3GC, FX3U and FX3UC PLCs
1. In the case of one-pair wiring
*1. Inside FX 3G -485-BD-RJ, SDA and RDA are connected and SDB and RDB are connected respectively
when 1-pair wiring is adopted. Signals are not connected to pins Nos. 4 and 5 of the RJ45 connector. For
cables of FX
3G -485-BD-RJ, refer to Subsection 4.2.2.
Make sure to perform class D grounding on the shield of connected cables.
*2.
The FX 3U -485-BD, FX 3G -485-BD, FX 3G -485-BD-RJ and FX 3U -485ADP(-MB) have a built-in terminal resistor.
Set the terminal resistor selector switch to 110 .
*3. Make sure to perform Class-D grounding on the shield of a twisted pair cable connected to
the FX
3U-485-BD, FX3G-485-BD or FX3U-485ADP(-MB).
2. In the case of two-pair wiring
*4. For cables of FX 3G -485-BD-RJ, refer to Subsection 4.2.2 .
Make sure to perform class D grounding on the shield of connected cables.
*5.
The FX 3U -485-BD, FX 3G -485-BD, FX 3G -485-BD-RJ and FX 3U -485ADP(-MB) have a built-in terminal resistor.
Set the terminal resistor selector switch to 330 .
*6. Make sure to perform Class-D grounding on the shield of a twisted pair cable connected to
the FX
3U-485-BD, FX3G-485-BD or FX3U-485ADP(-MB).
Class-D grounding (resistance: 100  or less)
*3
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
Terminal
resistor
110 
Terminal
resistor
110 
FX 3G -485-BD-RJ
*1
FX 3G -485-BD
FX
3U -485-BD,
FX
3U -485ADP(-MB)
FX
3G -485-BD-RJ
*1
FX 3G -485-BD
FX
3U -485-BD,
FX
3U -485ADP(-MB)
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
*2
*2
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
Terminal
resistor
330 
2 2
Class-D grounding (resistance: 100  or less)
*6
FX3G-485-BD-RJ
FX
3G-485-BD
FX
3U-485-BD,
FX
3U-485ADP(-MB)
FX
3G-485-BD-RJ
FX
3G-485-BD
FX
3U-485-BD,
FX
3U-485ADP(-MB)
SDA
(TXD+)
SDB
(TXD-)
RDA
(RXD+)
RDB
(RXD-)
SG
Terminal
resistor
330 
*5
*5
*4
*4
*5
*5