User's Manual

DTU-H100 Wi-Fi/Ethernet to RS485/RS232 Server User Manual

http://www.iotworkshop.com

PLC Device

232

485

AP IP: 10.10.100.254

STA IP: 10.10.101.100

AP IP: 10.10.101.254

STA

PLC Device

232

485

Figure 34. Transparent Serial Port Application

For up side device, configured as AP mode and use default SSID and IP address changed to

10.10.101.254, network protocol configured as TCP/Server mode, and protocol port ID: 8899.

For down side device, configured as STA mode and setting the same SSID with up side device,

enable DHCP network and network protocol configured as TCP/Client mode, protocol port ID:

8899. Target IP address part setting the same IP address with up side device (“10.10.101.254"

for this example).

When down side device boot up, it will find wireless AP and open TCP/Client network protocol to

connect with up side device‟s TCP/Server. All these operation will be automatic and after finished,

the two user devices connected to device through serial port can communicate each other and

think the connection between them is fully transparent.

4.3.4. Wireless Data Acquisition Card Application

For this wireless data acquisition card application, one PC works as data server and every data

acquisition card connects with a device to support wireless connection function.