The **ATC-2124-R** is a high-performance, industrial-grade **Ethernet-to-CAN Bus Converter** (also referred to as a CAN-bus Server or Gateway). It is designed to bridge CAN-bus networks with Ethernet-based systems, allowing for remote monitoring and control over a LAN or the Internet. --- ## 1. Core Technical Specifications The device utilizes a combination of a high-speed microprocessor and specialized communication controllers to manage data traffic between asynchronous protocols. | Component / Feature | Specification Details | | :--- | :--- | | **Processor** | 32-bit ARM7 Microprocessor | | **Ethernet Port** | 10/100 Mbps (Auto-sensing, RJ45 connector) | | **CAN Interface** | CAN 2.0A and CAN 2.0B (Standard and Extended frames) | | **CAN Baud Rate** | Programmable from 5 kbps to 1 Mbps | | **Isolation** | 1000V DC or 3500V RMS (depending on specific revision) | | **Power Supply** | 9V to 24V DC (typical industrial range) | --- ## 2. Key Electronic Features ### A. Galvanic Isolation One of the most critical electronic aspects of the ATC-2124-R is its **Photoelectric Isolation**. This protects the internal circuitry and the connected Ethernet network from high-voltage spikes, ground loops, and electromagnetic interference (EMI) common in industrial environments. ### B. Intelligent Buffer Management To prevent data loss during high-traffic periods, the device incorporates: * **Receive Buffer:** Stores incoming CAN messages when the Ethernet side is busy. * **Transmit Buffer:** Queues Ethernet-sent commands destined for the CAN bus. ### C. Communication Modes The electronics are configured to support multiple software-defined operating modes: 1. **TCP Server/Client:** Establishes a direct connection via TCP protocol. 2. **UDP Mode:** Used for faster, connectionless data broadcasting. 3. **Virtual COM:** Allows the device to appear as a physical Serial Port on a PC. --- ## 3. Interface Pinout (CAN Side) The CAN-bus interface typically uses a 3-pin or 5-pin terminal block. | Pin Number | Signal | Description | | :--- | :--- | :--- | | 1 | **CAN_H** | CAN High Level Signal | | 2 | **CAN_L** | CAN Low Level Signal | | 3 | **GND** | Signal Ground / Shield | --- ## 4. Typical Applications * **Industrial Automation:** Connecting PLCs to a centralized management system. * **Building Management:** Interfacing with HVAC or elevator systems using CAN-bus. * **Automotive Testing:** Remote diagnostics of vehicle ECUs over a network. ---