Table of Contents
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Pin
Definition
1
DC-IN
2
GND
3
AGND
4
RS485_B
5
RS485_A
6
AI1+
7
AI1-
8
AI2+
9
AI2-
10
AI3+
11
AI3-
12
AI4+
13
AI4-
14
GND
15
OUT-DC
Function
Pressing line power input positive
Pressing line power input negative
Communication common ground
Interface B of RS-485
Interface A of RS-485
Analog signal input channel 1 positive
Analog signal input channel 1 negative
Analog signal input channel 2 positive
Analog signal input channel 2 negative
Analog signal input channel 3 positive
Analog signal input channel 3 negative
Analog signal input channel 4 positive
Analog signal input channel 4 negative
Power supply output negative
Power supply output positive
Power input, range: DC10-28V.
Power supply GND.
When communicating with RS485, the DTU won't be used, while when
communicating with RS232, it will be grounded.
Interface B of RS-485 connected to Device B.
Interface A of RS-485 connected to Device A.
Input pin of analog signal forms the input with the GND1 pin.
To be used in pairs with VI1+.
Input pin of analog signal, forms the input with the GND2 pin.
To be used in pairs with VI2+.
Input pin of analog signal, forms the input with the GND3 pin.
To be used in pairs with VI3+.
Input pin of analog signal forms the input with the GND4 pin.
To be used in pairs with VI4+.
The negative internal of power supply connected to pin 2 GND.
Power supply output, the voltage is decided by the pin 1(internal connecting to
pin 1).
6
Description
12V, and 24V are recommended.
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