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Chengdu Ebyte Electronic Technology Co., Ltd
fo
name (of a
otnote
thing)
1
PE
2
GND
3
VCC
4
MOD
5
RS485 G
6
RS485 B
7
RS485 A
8
RS232
9
ANT
10
PWR
11
TXD
12
RXD
13
ERR
4 interface definition
4.1 Power Interface Description
The user is powered by a pressurized wire, 12V/20A DC power supply.
4.2 RS232 Interface Definition
The E90-DTU can be connected to the device via RS232 using a standard DB9 interface.
Copyright ©2012-2023, Chengdu Ebyte Electronic Technology Co., Ltd
functionality
connection with the earth
Crimped Power Supply
Input Negative
Positive input for crimped
power supply
Mode Control
RS485 interface G
RS485 Interface B
RS485 Interface A
RS232 interface
SMA-K connector
Power indicator
Serial Data Transmission
Indicator
Serial
Data
Receiving
Indicator
warning indicator
clarification
connection with the earth
Power Reference Ground
Power input (12V/20A)
Suspended, General Mode; Grounded,
Configuration Mode
RS485 interface G connected to the device
GND interface (recommended connection)
RS485 interface B connected to device B
interface
RS485 interface A connected to device A
interface
Standard RS232 interface
External threaded bore, 10mm long,
characteristic impedance 50Ω
Red, illuminated when power is on
Yellow, blinking when sending data
Yellow, blinking when receiving data
Red, not connected to the antenna or
voltage,
temperature
connected to the antenna abnormalities resolved
need to be re-powered to work normally
E90-DTU(400SL47) User Manual
abnormalities,
not
8
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