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.
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
12345678