6
3. Interface definition
3.1 Power interface definition
Users can choose
①
the VCC and GND terminal power supply, E800
-
DTU(Z2530
-
2G4
-
20) can use 8~ 28V DC power
supply, but it is recommended to use 12V or 24V DC power supply.
3.2 RS485 interface definition
E800
-
DTU(Z2530
-
2G4
-
20) uses RS485 as communication protocol. How to connect the cable? Choose the
corresponding interface in
①
3.81mm terminal block, details below:
Pin NO.
Definition
Function
Description
1
VCC
Screwing power interface, positive
8 ~ 28V DC, 12V or 24V( recommended )
2
GND
Screwing power interface, negative
The power supply negative pole is connected
to the system ground and the housing
3
AGND
Public ground
Connected to ground of other devices or not
connection
4
RS485
-
B
Serial port terminal
RS
-
485: Connected to RS 485 device interface B
5
RS485
-
B
Serial port terminal
RS
-
485: Connected to RS 485 device interface A
★
Note: The transceiver will be in poor communication when connecting multiple devices , while connecting a single
device is not, please try to parallel connect a 120
Ω
resistor between 485_A terminal and 485_B terminal.
Summary of Contents for Z2530-2G4-20
Page 5: ...5 2 2 Dimension...
