Low-Cost RS232 Serial to Ethernet Converter

Introduction of RS232 to Ethernet Converters

The RS232 to Ethernet Converters, used for data transparent transmission. USR-TCP232-302 is a low-cost serial ethernet converter,whose function is to realize bidirectional transparent transmission between RS232 and Ethernet. USR-TCP232-302 is internally integrated with TCP/IP protocol. User can apply it to device networking communication.

Features of RS232 to Ethernet Converters

• Support DHCP, automatically obtain an IP address and query IP address through serial setting protocol
• Support DNS function
• Set parameters through webpage
• Upgrade firmware via network
• Auto-MDI/MDIX, RJ45 port with 10/100Mbps
• Serial port baud rate from 600 bps to 230.4 Kbps, Check bit of None, Odd, Even, Mark and Space
• Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client
• Support virtual serial port and provide corresponding software USR-VCOM
• Heartbeat package mechanism to ensure connection is reliable, put an end to dead link
• User-defined registration package mechanism, check connection status and use as custom packet header
• Under TCP Server mode, Client number ranges from 1 to 16; default number is 4
• The global unique MAC address bought from IEEE, user can define MAC address
• Restore factory default
• Across the gateway, switches, routers
• Can work in LAN, also can work in the Internet (external network)
• Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS
• Support customization

Application Field of RS232 to Ethernet Converters

• Industrial data transmission, industrial automation
• security and protection monitoring, public security
• Smart home, power control, environmental monitoring, intelligent agriculture
• Door check on work attendance system, POS system, rice selling system
• Building automation system, power monitoring, self-service banking system, telecom machine room monitoring

Basic Function

Functional Diagram

Work Mode

TCP Server mode:

302 will listen to port that configured by user and wait to TCP Client connection.

302 will transmit data from serial device to all connected TCP Clients by transparent transmission.

PC initiates and establishes connection

 302 realizes bidirectional data transmission between serial device and TCP Client

TCP Client mode:

302 will initiate TCP connection to destination IP address that configured by user and 302 will continuously try to reconnect if establishing TCP connection unsuccessfully.

If 302 establishes TCP connection to TCP Server successfully, it can realize bidirectional data transparent transmission between TCP Server and serial device.

UDP mode:

302 will transmit serial data from serial device to target network side device by UDP connection.

302 will listen to port and transmit all received data to serial device.

HTTP Client mode

302 supports HTTP Client mode which can transmit serial data to HTTP server in HTTP format(GET/POST).

Features:

Web Server with powerful function

Baud rate synchronization function:

User can dynamically modify 302’s serial parameters by network commands.

Identity packet function:

When 302 works as TCP Client, it can send identity packet to TCP server which can be identification.

Identity packet can be IMEI code, ICCID code and user editable identity packet.

Heartbeat packet:

Network heartbeat packet: 302 can send heartbeat packet to network server periodically to inform server that 302 is in active status and to keep normal network connection with server.

Serial heartbeat packet: 302 can send heartbeat packet to serial device periodically to inform serial device that 302 is in active status and serial heartbeat packet can also be used to grab sensor data.

USR Cloud:

IoT cloud platform that being developed by our company independently.

Applications

Unattended weighing system

Connect serial to ethernet converter USR-TCP232-302 to barrier gate and it can realize remote control of barrier gate by Ethernet in control center.

Access control system

Can realize data transparent transmission to network and real-time monitoring.

Can realize remote and real-time data transmitting.

Stable network-based management and save human cost.

 Traffic lights management system

Connect 302 to traffic lights and it can realize traffic data acquisition and processing by Ethernet in control center.

It can also provide accurate quantitative basis for traffic dispatch management and urban transport planning

Can implement the optimum control for transportation phenomena such as traffic jam, traffic accident, traffic capacity from a regional or global perspective.

Electric power

Real-time data collection of distribution box

Realize control center real-time interconnection

Instant communication and reduce cost