Mitsubishi FX3U-232-BD User Manual page 176

FX Series PLC User's Manual - Data Communication Edition
Parallel Link
4.3 Connection Diagram
4.3.1 For FX and FX
3U
1. In the case of one-pair wiring
FX
FX
Terminal
resistor
110 Ω
*2
*1 Make sure to perform Class-D grounding to the shield of a twisted pair cable connected to the FX
FX -485ADP(-MB).
3U
*2 The FX
Set the terminal resistor selector switch to 110 Ω.
2. In the case of two-pair wiring
FX
FX
*2
*2
Terminal
resistor
330 Ω
× 2
*1 Make sure to perform Class-D grounding to the shield of a twisted pair cable connected to the FX
FX -485ADP(-MB).
3U
*2 The FX
Set the terminal resistor selector switch to 330 Ω.
C-26
PLCs
3UC
-485-BD
3U
-485ADP(-MB)
3U
SDA
SDB
RDA
RDB
SG
Class-D grounding (resistance: 100 Ω or less)
-485-BD and FX -485ADP(-MB) have a built-in terminal resistor.
3U 3U
-485-BD
3U
-485ADP(-MB)
3U
SDA
SDB
RDA
RDB
SG
Class-D grounding (resistance: 100 Ω or less)
-485-BD and FX -485ADP(-MB) have a built-in terminal resistor.
3U 3U
FX -485-BD
3U
FX -485ADP(-MB)
3U
SDA
Termina
SDB
l resistor
110 Ω
RDA
*2
RDB
SG
*1
FX -485-BD
3U
FX -485ADP(-MB)
3U
SDA
*2
SDB
RDA
*2
RDB
Termina
l resistor
330 Ω
SG
× 2
*1
4 Wiring
4.3 Connection Diagram
-485-BD or
3U
-485-BD or
3U