Description
USR-K5 / USR-K6 / USR-K7 UART to Ethernet Modules – Industrial Serial Networking Solution
The USR-K5, USR-K6, and USR-K7 UART to Ethernet Modules are compact and industrial-grade networking modules designed for seamless bi-directional communication between UART (TTL serial) and Ethernet networks. These modules integrate a complete TCP/IP protocol stack, enabling embedded devices to gain reliable network connectivity with minimal development effort.
Designed for industrial automation, medical monitoring, IoT systems, and remote data acquisition, these modules support multiple networking modes including TCP Client, TCP Server, UDP Client, UDP Server, and Virtual COM. The advanced USR-K7 additionally supports Modbus RTU to Modbus TCP conversion and enhanced flow control.
With their compact RJ45-sized form factor, robust industrial reliability, and flexible configuration options, the USR series modules are ideal for modern embedded networking applications.
Key Features
Common Features (K5 / K6 / K7)
- UART TTL to Ethernet Conversion – Reliable serial-to-network communication.
- Integrated TCP/IP Stack – Simplifies embedded networking.
- Compact RJ45-Sized Design – Easy integration into projects.
- Multiple Network Modes – TCP/UDP Client & Server support.
- Virtual COM Support – Enables PC software serial communication over Ethernet.
- Web Configuration & AT Commands – Easy setup and customization.
- Industrial-Grade Reliability – Stable operation in complex environments.
- Heartbeat & Registration Packet Support – Better device management and connectivity.
USR-K5 Features
- Supports 4 working modes: TCP Client, TCP Server, UDP Client, UDP Server.
- Hardware Watchdog (WDT) for stable 24/7 operation.
- Time-to-restart function for clearing cache automatically.
- Supports UART to Web Server communication.
- Compatible with USRIOT Cloud platform.
USR-K6 Features
- Supports 5 working modes, including httpsd Client.
- TCP Keepalive support for stable communication.
- DNS domain name resolution support.
- Supports up to 16 TCP client connections.
- Automatic timeout restart for enhanced stability.
USR-K7 Features
- Supports Modbus RTU to Modbus TCP Gateway.
- Supports CTS/RTS & XON/XOFF flow control.
- Supports 10/100Base-T(X) Ethernet.
- Custom web page and Web-to-Serial functionality.
- Automatic reconnection and dead-link detection.
Technical Specifications
| Parameter | USR-K5 | USR-K6 | USR-K7 |
|---|---|---|---|
| Interface | TTL UART to Ethernet | TTL UART to Ethernet | TTL UART to Ethernet |
| Ethernet | RJ45 | RJ45 | 10/100Base-T(X) |
| Protocols | TCP/UDP | TCP/UDP/httpsd | TCP/UDP/httpsd |
| Virtual COM | Yes | Yes | Yes |
| Modbus Support | No | No | Yes |
| Flow Control | No | No | CTS/RTS, XON/XOFF |
| Configuration | Web, AT Commands | Web, AT Commands | Web, AT, Utility |
| Working Modes | 4 Modes | 5 Modes | 5 Modes |
| Industrial Grade | Yes | Yes | Yes |
Applications
- Industrial Automation Systems
- IoT & Embedded Networking
- Medical Device Monitoring
- Remote Data Acquisition
- Power Monitoring Systems
- Serial Device Networking
- Modbus Gateway Applications
- Smart Factory Communication
Precautions
- Ensure proper power supply before operation.
- Configure correct UART baud rate settings.
- Use suitable Ethernet cables for stable communication.
- Avoid exposure to moisture and extreme temperatures.
- Follow proper grounding practices in industrial environments.