IOT-WORKSHOP
DTU-H10X
Wi-Fi/Ethernet to RS485/RS232 Server User Manual
http://www.iotworkshop.com
11
Function
Name
Description
RXD
RS232/RS485 Data Receive
TXD
RS232/RS485 Data Transfer
Button
Reload
Restore to Factory Setting Button
Long Press this button for 3 seconds and
loosen, the device will restore to factory
setting in 10 seconds.
1.2.2.
RS232 Interface
Device serial port is male(needle), RS232 voltage level(can connect to PC directly), Pin Order is
cosistent with PC COM port. Use cross Cable connected with PC(2-3 cross, 7-8 cross, 5-5 direct,
7-8 no connection), see the following table for pin defination.
Figure 2.
RS232 Pin Defination(Male/Needle Type)
Table 3 RS232 Interface
Pin Number Name
Description
2
RXD
Receive Data
3
TXD
Send Data
5
GND
GND
7
RTS
Request to Send
8
CTS
Clear to Send
9
VCC
Defualt not used. May connect the jumper of
the DTU main board to make this pin
connected with DTU DC power supply.
1.2.3.
RS485 Interface
RS485 use two wire links, A(DATA+), B(DATA-). Connect A(+) to A(+), B(-) to B(-) for
communication.
1.2.4.
RJ45 Interface
DTU-H10X Ethernet port is 10M/100M adaptive, support AUTO MDI/MDIX which means it
support direct connecting to PC with Ethernet cable. Ethernet function is enabled by default and it
can also be closed for power save via web or AT command.
