Mitsubishi FX3U-232-BD User Manual page 316

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
4.8.3 For F700 and A700 Series (built-in RS-485 terminal)
1. When one inverter is connected
FX -485-BD
3U
FX -485ADP(-MB)
3U
RDA
RDB
SDA
SDB
SG
PLC
2. When two or more (up to eight) inverters are connected
FX -485-BD
3U
FX -485ADP(-MB)
3U
RDA
RDB
SDA
SDB
SG
PLC
When adopting branches, perform the wiring as shown below:
Connect them
to SDA and
SDB in PLC.
Connect them
to RDA and
RDB in PLC.
Connect it to
SG in PLC.
E-26
Terminal resistor: 110Ω
- FX -485-BD
3U
- FX -485ADP(-MB): Set the built-in selector switch.
3U
0.3mm 2 or more
S
G
Class-D
grounding
Terminal resistor: 110Ω
- FX -485-BD
3U
- FX -485ADP(-MB): Set the built-in selector switch.
3U
0.3mm 2 or more
Class-D
S S S S R R
grounding
S D D D D D D
G B A B A B A
1 1 2 2 1 1
Inverter
+ - + - RXD
+ - + -
TXD TXD
SG SG
VCC
Twisted pair cable
(0.3mm 2 or more)
Set the terminal resistor switch to the
"100Ω" side.
S S R R
D D D D
A B A B
1 1 1 1
Inverter
Twisted pair cable
(0.3mm 2 or more)
Class-D
grounding
R R S S S S
D D S S D D D D
B A G G B A B A
2 2 1 1 2 2
Inverter
+ - + - RXD
Connect them to
RDA1 and RDB1 in
+ - + -
next inverter.
Connect them to
SDA1 and SDB1 in
SG SG next inverter.
VCC
Connect it to SG in
next inverter.
4.8 Connection Diagram
Set the terminal resistor switch
to "100Ω" in the inverter located
furthest away from the PLC.
Class-D
grounding
R R R R
S S
D D D D S
. . . .
S D D
B A B A G
G B A
1 1 2 2
1 1
Inverter
4 Wiring
R R
D D
B A
1 1