The **MC-ACT-UARTF-NET** is a specialized communication interface module designed to act as a bridge between high-speed networking protocols and standard asynchronous serial communication. In electronic terms, it is a **UART (Universal Asynchronous Receiver-Transmitter) to Ethernet (Network) Converter**. --- ## 1. Core Electronic Architecture The device is composed of several key subsystems that manage signal conversion, voltage regulation, and data integrity. ### Main Components | Component | Function | | :--- | :--- | | **MCU / SoC** | A high-speed microcontroller that runs the TCP/IP stack and handles data packetization. | | **Ethernet Controller** | Manages the Physical (PHY) and Media Access Control (MAC) layers for network connectivity. | | **UART Interface** | The serial side (TTL or RS232 levels) used to connect to sensors, PLCs, or embedded boards. | | **Isolation Barrier** | (Often included) Magnetic or optical isolation to protect the UART side from network surges. | --- ## 2. Technical Specifications (Typical) While specific revisions may vary, the "UARTF-NET" series generally adheres to the following electronic parameters: ### Power Supply * **Voltage Range:** Typically 3.3V to 5V DC. * **Current Consumption:** Low power, usually <150mA during active data transmission. ### Serial Side (UART) * **Signal Levels:** Usually 3.3V TTL (Transistor-Transistor Logic). * **Baud Rates:** Supports 300 bps up to 921,600 bps (High Speed). * **Data Bits:** 5, 6, 7, 8. * **Parity:** None, Even, Odd, Mark, Space. ### Network Side (Ethernet) * **Connector:** RJ45 with integrated Link/Activity LEDs. * **Speed:** 10/100 Mbps Auto-negotiation. * **Protocols:** TCP Server, TCP Client, UDP, HTTP, MQTT. --- ## 3. Connectivity Pinout (Typical 4-Pin/6-Pin) Most MC-series UART-NET modules use a standard pinout for the serial header: 1. **VCC:** Power Input. 2. **GND:** Ground. 3. **TXD:** Transmit Data (Output from module). 4. **RXD:** Receive Data (Input to module). 5. **RTS/CTS:** (Optional) Hardware flow control pins. --- ## 4. Operational Modes Electronic logic within the firmware allows the device to function in three primary ways: 1. **Transparent Transmission:** Data sent to the UART is instantly packaged and sent to a specific IP/Port. 2. **Modbus Gateway:** Converts Modbus RTU (Serial) to Modbus TCP (Ethernet). 3. **Web-Based Config:** The internal logic hosts a small web server for configuring IP settings and Baud rates.