Chengdu Ebyte Electronic Technology Co,;Ltd
E90-DTU (433L37) user manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co,;Ltd
8
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;
E90-DTU can use 10~ 28V DC power supply, but it is recommended to use 12V or 24V DC power supply.
4.2. RS232 Interface definition
The E90-DTU can be connected to the device via RS-232 using the standard DB-9 interface.
4.3. RS485 Interface definition
E90-DTU can connect the 485_A terminal and 485_B terminal with the device RS-485 A terminal and B terminal.
Pin NO.
Definition
Function
Description
1
VCC
Crimping power interface, positive
10 ~ 28V DC, recommended 12V or 24V
2
GND
Crimping power interface, negative
The power supply negative pole is connected to the system
ground and the housing
3
485_B
RS-485 interface, interface B
The RS-485 interface B is connected to the device interface B
Summary of Contents for 433C33
Page 1: ...E90 DTU 433L37 ...
