Functional Description
Page 46
3.12
RS422/485 (on G229 Peripheral Board)
Table 18.
Connector types – 9-pin D-Sub receptacle
3.12.1
Full-Duplex Interface
Table 19.
Pin assignment – RS422/485 full duplex (9-pin D-Sub)
3.12.2
Half-Duplex Interface
Table 20.
Pin assignment – RS422/485 half duplex (9-pin D-Sub)
3.12.3
Signal Mnemonics
Table 21.
Signal mnemonics – RS422/485
Connector
Type
On G25A
9-pin D-Sub receptacle according to DIN41652/MIL-C-24308, with thread
bolt UNC4-40
Mating
9-pin D-Sub plug according to DIN41652/MIL-C-24308, available for
ribbon cable (insulation piercing connection), hand-soldering connection
or crimp connection
1
-
6
I-VCC
2
-
7
-
3
TX+
8
TX-
4
RX+
9
RX-
5
I-GND
1
-
6
I-VCC
2
-
7
-
3
RX/TX+
8
RX/TX-
4
-
9
-
5
I-GND
Signal
Direction
Description
I-GND
-
Isolated reference potential
I-VCC
out
Isolated power supply
RX+/-
in
Receive data
TX+/-
out
Transmit data
1
6
5
9
1
6
5
9
