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7
7
Cable connection
R R T T S S
X X X X G H
A B A B I
E
L
D
SW
INVERTER 1
INVERTER 2
RS485
OPTION UNIT
Host
Computer
1.Transmit positive line (TXA)
2.Transmit negative line (TXB)
3.Receive positive line (RXA)
4.Receive negative line (RXB)
5.Signal line ground (SC)
6.Shield ground (FG)
Another
RS-485
Option Unit
1.RXA
2.RXB
3.TXA
4.TXB
5.SG
6.SHIELD
123456
123456
VF-S7VF-S7
Communication
co
nn
ecto
r
C
N1
Opening for communication connector
To open the cover of the communication
connector, slide it in the direction
indicated with a triangle mark.
More than 5cm
More than 5cm
Leave a space more
than 5cm on left and
bottom side of option
unit for connecting the
communication cable.