For F700 And A700 Series (Built-In Rs-485 Terminal) - Mitsubishi FX3U-USB-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Inverter Communication
4.8.5

For F700 and A700 Series (built-in RS-485 terminal)

1. When one inverter is connected
FX -485-BD
3U
FX -485-BD
3G
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 -485-BD
3G
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.
TXD
Connect them
to RDA and
RDB in PLC.
Connect it to
SG in PLC.
Terminal resistor: 110Ω
- FX -485-BD, FX
3U 3G
- FX -485ADP(-MB): Set the built-in selector switch.
3U
2
0.3mm or more
S S
S D D
G A B
1 1
Class-D
grounding
Terminal resistor: 110Ω
- FX -485-BD, FX -485-BD
3U 3G
- FX -485ADP(-MB): Set the built-in selector switch.
3U
2
0.3mm or more
Class-D
S S S S R R R R
grounding
S D D D D D D D D
G B A B A B A B A
1 1 2 2 1 1 2 2
Inverter
+ - + - RXD + - + -
+ - + - + - + -
TXD
SG SG SG
VCC
-485-BD
Twisted pair cable
2
(0.3mm or more)
Set the terminal resistor switch to the
"100Ω" side.
R R
D D
A B
1 1
Inverter
Twisted pair cable
2
(0.3mm or more)
Class-D
grounding
S S S S R R R R
S S D D D D D D D D
G G B A B A B A B A
1 1 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 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
S S R R
S
. . . .
S D D D D
G
G B A B A
1 1 1 1
Inverter
4 Wiring
A
B
C
D
E
F
G
H
I
Apx.
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