RS-485 (2-wire system) connection
The MJ1 and MJ2 are not usable for connection via RS-422 (4-wire system). Use the CN1 port
CAUTION
instead or a commercially available RS-232C-to-RS-422 converter.
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.
MJ1/2
Name
RJ - 45
FG
1 2 3 4 5 6 7 8
+RD/+SD
-RD/-SD
SG
If noise disturbs communications, connect a shielded cable to both the V9 series and the connected device.
MJ1/2
Name
RJ - 45
FG
1 2 3 4 5 6 7 8
+RD/+SD
-RD/-SD
SG
No.
Shielded
1
2
5
No.
Shielded
1
2
5
1.3 Connection Methods
RS-485 port of the
connected device
Send/receive
data (+)
Send/receive
data ()
SG
RS-485 port of the
connected device
FG
Send/receive
data (+)
Send/receive
data (-)
SG
1-13