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Product Attributes

Introduction

The USR-TCP232-T1/S1 is a module designed for rapid serial-to-Ethernet transparent data transmission. All data protocol conversions are handled internally, requiring only simple configuration to enable data transfer between the serial port and the network. The module features a built-in communication interface, supports TCP/UDP protocols, DHCP, and DNS. Device parameters can be configured via serial AT commands, network configuration protocol, or the built-in Web interface — quickly and easily. Reliable and stable with wide temperature tolerance, both package options allow for faster integration into embedded development boards. The product is widely used in applications such as instrumentation, access control & attendance systems, smart home, industrial all-in-one machines, and medical devices.

Features

• Compact Ethernet module; available in DIP or SMT form factor for embedded integration
• Serial baud rate: 300bps to 921.6Kbps; supports None, Odd, Even, Mark, and Space parity
• Operating modes: TCP Client, TCP Server, UDP Client, UDP Server, HTTPD Client
• Modbus gateway support for seamless ModbusRTU ↔ ModbusTCP protocol conversion
• Auto-polling Modbus commands with millisecond-level data acquisition; transparent or JSON protocol reporting to server
• TCP Server supports up to 16 client connections; connected IPs displayed; TX/RX data counted per connection
• TCP Server mode: configurable option to kick existing connections when maximum connection count is reached
• TCP Client short connection support with customizable disconnection timeout
• Timeout reboot (no-data reboot) with customizable reboot interval
• Custom registration packet and heartbeat mechanism for reliable connections, eliminating dead connections
• DHCP for automatic IP assignment; DNS server address fully customizable
• 10/100Mbps adaptive Ethernet interface with AUTO-MDIX auto crossover detection
• Virtual COM port support via USR-VCOM software developed in-house
• Multiple configuration methods: Web UI, AT commands, serial protocol, and network protocol
• Factory-programmed globally unique MAC address; supports both software and hardware factory reset
• Industrial-grade design with wide temperature tolerance and ultra-high reliability

Applications

• Instrumentation
• Access Control & Attendance
• Smart Home
• Industrial All-in-One PC
• Medical Devices