Multifunctional serial to Ethernet module user manual
www.usriot.com
Jinan USR IOT Technology Co., Ltd
Page29
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4.3.3.
4.3.3.
4.3.3.
4.3.3. LED
LED
LED
LED status
status
status
status
Equipment have 4 indicator lights in total, sequence from left to right.
ID
name
Description
1
Work
Twinkle every 1 seconds
2
Power
On after power up
3
Link(green)
On RJ45, when ethernet physical link established, on.
4
Data(yellow)
On RJ45, wnen ethernet data communicate, twinkle.
Diagram 4-13 LED definition
4.3.4.
4.3.4.
4.3.4.
4.3.4. RS232
RS232
RS232
RS232 interface
interface
interface
interface
The serial port is male (needle), RS232 level (can be directly connected to computer serial
via a RS232 extend wire), When connected with the computer, we need to use cross cable (2-3
cross, 7-8 cross, 5-5 direct Otherwise, it might lead to irregularly work).
Number
RS232
Description
1
-
-
2
RXD
RS232 device receive data pin
3
TXD
RS232 device transmit data pin
4
-
-
5
GND
Signal ground
6
-
-
7
RTS
RS232 require to send
8
CTS
RS232 clear to send
9
-
-
Diagram 4-14 DB9 interface
4.3.5.
4.3.5.
4.3.5.
4.3.5.
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 (-).
