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4. Interface Defination
4.1. Power interface definition
Users can choose ⑥ DC power interface, using the power adapter supply with the interface of the 5.5mm outer
diameter , 2.5mm diameter ;
Also choose the VCC and GND terminal power supply, only choose any one of the power supply is OK;
DTU can use 8~ 28V DC power supply, but it is recommended to use 12V or 24V DC power supply.
4.2. RS232 Interface definition
The DTU can be connected to the device via RS-232 using the standard DB-9 interface.
4.3. RS485 Interface definition
DTU can connect the 485_A terminal and 485_B terminal with the device RS-485 A terminal and B terminal.
★
Pin NO.
Definition
1
VCC
2
GND
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Function
Crimping power interface, positive
Crimping power interface, negative
E32-DTU (900L30)-V8_User Manual_EN
Description
8 ~ 28V DC, recommended 12V or 24V
The power supply negative pole is connected to
the system ground and the housing
7
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