Multifunctional serial to Ethernet module user manual http://en.usr.cn
Jinan USR IOT Technology Co., Ltd tec@usr.cn
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3.7.3.
3.7.3.
3.7.3.
3.7.3. LED
LED
LED
LED status
status
status
status
Equipment have 5 indicator lights in total, sequence from left to right .
ID Name Description
1 Power(red) Bright after power on
2 Work(green) Flash at work
3 Link 1 (green) In RJ45 1 port, bright after network connection
4 Link 2 (green) In RJ45 2 port, bright after network connection
5 Link 3 (green)
bright after network connection
module
Diagram 3 - 23 LED definition
3.7.4.
3.7.4.
3.7.4.
3.7.4. RS232
RS232
RS232
RS232 interface
interface
interface
interface
It have 2 * RS232 interface. The serial port is male (needl), RS232 level (can be directly
connected to computer serial), part of RS232 pin sequences consistent to computer COM port.
When connected with the computer, we need to use cross cable (2-3 cross, 7-8 cross, 5-5 direct,
7-8 can don ’ t connect, but musn ’ t direcly connect to computer. Otherwise, it might lead to
irregularly work).
The DB9 interface contains the RS232.
Number
name
Description
2
RXD RS232 device receive data pin
3
TXD RS232 device transmit data pin
5
GND Signal ground
7
RTS RS232 require to send
8 CTS RS232 clear to send
9 VCC Default not used. there is one pad jumper, default
disconnect, when connect, it can power supply outside
serial device.
Diagram 3 - 24 DB9 interface
3.7.5.
3.7.5.
3.7.5.
3.7.5. RS485
RS485
RS485
RS485 interface
interface
interface
interface
RS485 two wirings terminal, A
(DATA
+), B (DATA), when connected with RS485, A (+) to
A (+), B (-) to B (-).
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