Hakko Electronics Monitouch V9 Series, Connection Manual

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1.3 Connection Methods
1-13
RS-485 (2-wire system) connection
 Use Hakko Electronics’ cable “V6-TMP” (3, 5, 10 m) as a communication cable.

The maximum length of wiring is 500 m.
* The maximum length varies depending on the connected device. Check the specifications for each device.

If the PLC has a signal ground (SG) terminal, connect it.
 The DIP switch on the back of the V9 unit is used to set the terminating resistance. For more information, see “1.2.6 DIP
Switch (DIPSW) Settings” (page 1-7).
 Connect a shielded cable to either the V9 series or the connected device. Connect the cable to the FG terminal on the
backside of MONITOUCH.

If noise disturbs communications, connect a shielded cable to both the V9 series and the connected device.
CAUTION
The MJ1 and MJ2 are not usable for connection via RS-422 (4-wire system). Use the CN1 port
instead or a commercially available RS-232C-to-RS-422 converter.
SG
RJ - 45
MJ1/2
Name No.
1
2
5
+RD/+SD
-RD/-SD
SG
FG
1 2 3 4 5 6 7 8
Shielded
RS-485 port of the
connected device
Send/receive
data (+)
Send/receive
data (  )
SG
FG
RJ - 45
MJ1/2
Name No.
1
2
5
+RD/+SD
-RD/-SD
SG
FG
1 2 3 4 5 6 7 8
Shielded
RS-485 port of the
connected device
Send/receive
data (+)
Send/receive
data (-)