Hakko Electronics V Series - Page 280

Appendix 6 Universal Serial Communications App6-11
MJ2 (V706 only) Specifications as an RS-422 Connector
The pins of modular jack 2 correspond to signals as given below.
• Wiring
Perform wiring as shown below.
<4-wire system>
<2-wire system>
CAUTION
To use an MJ2 on a V706 as an RS-422 connector, set the slide switch on the V706 to
the lower position: RS-422.
For details, refer to the separate V706 Hardware Specifications.
MJ2 Pin No. Signal Name Contents
1 +SD RS-422 + send data
2 −SD RS-422 − send data
7 +RD RS-422 + receive data
8 −RD RS-422 − receive data
Pin No. Name Signal Name Signal Direction (V Series ←→ Communication Device)
1 Send data +SD
2 Send data −SD
7 Receive data +RD
8 Receive data −RD
12345678
SG
+SD
−SD
+RD
−RD
SHELL
1
2
7
8
FG
RDA
RDB
SDA
SDB
* Use twist-shielded cables.
V706 (MJ2)
General-purpose
computer
Signal
Name
Pin No.
Signal
Name
SG
+SD
−SD
+RD
−RD
SHELL
1
2
7
8
FG
RDA
RDB
SDA
SDB
* Use twist-shielded cables.
V706 (MJ2)
General-purpose
computer
Signal
Name
Pin No.
Signal
Name