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Pin
RJ45
Pin
DB9
I/O
Description
Bausch
2
2
From RTU to PC
Receive data
3
3
From PC to RTU
Transmit data
7
7
From PC to RTU
Request to sent
8
8
From RTU to PC
Clear to sent
5
5
---
Signal ground
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI+
.
RST
GND
.
G
A
B
DO1
DO1
DO2
DO2
AI1 +
AI1 -
AI2 +
AI2 -
1 nc
2 RXD
3 TXD
4 -
5 GND
6 -
7 RTS
8 CTS
D
O
A
I
M
A
IN
S
N
L
D
I IO
R
S
2
32
M
M
C
C
A
R
D
1
2
GSM
3
DinBox RTU M4
E
T
H