UIROBOT motion control gateways bridge devices with different communication standards to a unified CAN bus network. Whether you need to connect legacy RS232 equipment (UIM2513), integrate Ethernet-based controllers (UIM2523), or prototype with Arduino (UI-MCP2515), there is a gateway for your application. All gateways support CAN 2.0B protocol and are designed for reliable operation in industrial environments. --- ## Product Lineup | Model | Primary Interface | CAN Ports | Serial Ports | Ethernet | Isolation | Dimensions | |-------|------------------|-----------|-------------|----------|-----------|------------| | UIM2513 | RS232 | 2 x CAN 2.0B | RS232 | — | 2500V | 72 x 72 mm | | UIM2523 | Ethernet | 1 x CAN 2.0B | — | RJ45 10/100M | 2500V | 72 x 72 mm | | UI-MCP2515 | SPI (Arduino) | 1 x CAN 2.0A/B | — | — | — | PCB Module | :::tip Choose UIM2513 for RS232-to-CAN conversion, UIM2523 for network-to-CAN conversion, or UI-MCP2515 for Arduino prototyping. ::: --- ## UIM2513 — RS232 to CAN Gateway The UIM2513 is a multi-protocol motion control gateway with 2 independent CAN 2.0B channels and an RS232 serial interface. It performs bidirectional protocol conversion with a 1ms control cycle, making it ideal for connecting legacy serial devices to CAN bus motor networks. ### Key Features :::grid{cols=2 style=card} **Multi-Protocol Conversion** Bidirectional CAN 2.0B <-> RS232. Supports transparent transmission and protocol parsing modes. **Dual CAN Channels** 2 independent CAN 2.0B ports allow bridging two separate CAN networks or connecting CAN devices while maintaining a pass-through channel. **High-Speed Processing** 1ms control cycle for protocol conversion and data forwarding. Motion control instructions are parsed and forwarded in real-time. **2500V Isolation** Galvanic isolation on CAN interfaces protects against ground loops and voltage spikes in industrial environments. ::: ### Specifications | Parameter | Specification | |-----------|--------------| | Supply Voltage | 16–48 VDC | | CAN Ports | 2 x CAN 2.0B | | Serial Port | RS232 | | CAN Baud Rate | 125K / 250K / 500K / 1M | | Serial Baud Rate | 9600 / 19200 / 38400 / 57600 / 115200 | | Max Node Count | 32+ per CAN channel | | Isolation | 2500V (CAN) | | Control Cycle | 1 ms | | Dimensions | 72 x 72 mm | | Mounting | DIN-rail / Screw | | Operating Temp | -20 C to +70 C | | Power Consumption | 3W max | ### Wiring Diagram  ### RS232 Pinout | Pin | Function | Connect To | |-----|----------|-----------| | TX | RS232 Transmit | Device RX | | RX | RS232 Receive | Device TX | | GND | Signal Ground | Device GND | --- ## UIM2523 — Ethernet to CAN Gateway The UIM2523 bridges Ethernet TCP/IP networks to CAN 2.0B bus, enabling remote motion control and monitoring over standard network infrastructure. ### Key Features :::grid{cols=2 style=card} **Ethernet Connectivity** 10/100M Ethernet with RJ45 connector. Standard TCP/IP protocol support for easy integration with PCs, PLCs, and network controllers. **Remote Access** Control CAN bus motors from anywhere on the network. Ideal for distributed systems and remote monitoring applications. **Multi-Device Networking** Multiple UIM2523 gateways can be networked together, enabling centralized control of geographically distributed CAN bus segments. **2500V Isolation** Galvanic isolation on the CAN interface protects against industrial electrical noise. ::: ### Specifications | Parameter | Specification | |-----------|--------------| | Supply Voltage | 16–48 VDC | | CAN Ports | 1 x CAN 2.0B | | Ethernet | 10/100M RJ45 | | CAN Baud Rate | 125K / 250K / 500K / 1M | | Protocol | TCP/IP, UDP | | Max Node Count | 32+ per CAN channel | | Isolation | 2500V (CAN) | | Dimensions | 72 x 72 mm | | Mounting | DIN-rail / Screw | | Operating Temp | -20 C to +70 C | ### Wiring Diagram  --- ## UI-MCP2515 — Arduino CAN Interface Module The UI-MCP2515 is a compact SPI-to-CAN module based on the MCP2515 controller and TJA1050 transceiver. It plugs directly into Arduino development boards for rapid prototyping of CAN bus motor control systems. ### Key Features :::grid{cols=2 style=card} **Arduino Compatible** Directly compatible with Arduino Uno, Mega, and other SPI-based development boards. No additional wiring required. **CAN 2.0A/B Support** Standard and extended frame formats. Baud rates from 125K to 1M. **SPI Interface** High-speed SPI communication with the host MCU. Does not occupy UART or I2C pins. **Rapid Prototyping** Ideal for proof-of-concept projects, educational use, and field debugging before deploying production gateways. ::: ### Specifications | Parameter | Specification | |-----------|--------------| | CAN Controller | MCP2515 | | CAN Transceiver | TJA1050 | | Interface | SPI | | CAN Protocol | CAN 2.0A / 2.0B | | CAN Baud Rate | 125K / 250K / 500K / 1M | | Operating Temp | -40 C to +85 C | | Supply Voltage | 5V (from Arduino) | ### Arduino Wiring ``` +------------------+ +------------------+ | Arduino | | UI-MCP2515 | +------------------+ +------------------+ | Pin 10 (CS) ---+---->| CS | | Pin 11 (MOSI)---+---->| SI | | Pin 12 (MISO)<--+-----| SO | | Pin 13 (SCK) ---+---->| SCK | | Pin 2 (INT) <--+-----| INT | | 5V ---+---->| VCC | | GND ---+---->| GND | +------------------+ +------------------+ CAN Side: +------------------+ | UI-MCP2515 | +------------------+ | CANH --------->| CAN Bus High | CANL --------->| CAN Bus Low +------------------+ ``` --- ## System Architecture ### Gateway in a CAN Bus Network ``` +-------------------------------------------------------------------------+ | CONTROL SYSTEM | | | | +------------------+ +------------------+ | | | PC / HMI | | PLC / MCU | | | | (Ethernet or | | (RS232) | | | | USB-CAN) | | | | | +--------+---------+ +--------+---------+ | | | | | +-------------+-----------------------+------------------------------------+ | | +--------v---------+ +--------v---------+ | UIM2523 | | UIM2513 | | Ethernet -> CAN | | RS232 -> CAN | +--------+---------+ +--------+---------+ | | +-----------+-----------+ | +-----------v-----------+ | CAN BUS | | (ISO-11898, 1 Mbps) | +--+------+------+-----+ | | | +-----v-+ +--v---+ +v------+ |Motor 1| |Motor2| |Motor N| |UIM342 | |UIM342| |UIM342 | +-------+ +------+ +-------+ ``` ### Protocol Conversion Flow | Source | Gateway | Destination | Use Case | |--------|---------|-------------|----------| | PC (RS232) | UIM2513 | CAN Bus Motors | Legacy PC control | | PC (Ethernet) | UIM2523 | CAN Bus Motors | Networked control system | | Arduino (SPI) | UI-MCP2515 | CAN Bus Motors | Prototyping and education | --- ## Quick Start ### Step 1 — Choose Your Gateway | If you have... | Use... | |----------------|--------| | RS232 serial port on PC/PLC | UIM2513 | | Ethernet network | UIM2523 | | Arduino development board | UI-MCP2515 | ### Step 2 — Connect Hardware 1. Connect power supply (16–48 VDC for UIM2513/UIM2523, 5V USB for UI-MCP2515) 2. Wire CANH and CANL to the CAN bus (twisted pair recommended) 3. Connect your host device (RS232/Ethernet/SPI) to the gateway ### Step 3 — Configure ```bash # Set gateway node ID (UIM2513) geo gateway set-id --id 1 --port COM3 # Configure CAN baud rate geo gateway config --baudrate 500000 --port COM3 # Verify connection geo gateway status --port COM3 ``` ### Step 4 — Test ```bash # Send a test command through the gateway geo motor jog --id 1 --speed 500 --direction forward --port COM3 ``` --- ## Safety Precautions ### Electrical Safety | Hazard | Precaution | |--------|------------| | High Voltage | Disconnect power before wiring. Use within specified voltage range only. | | Short Circuit | Ensure proper wire gauge and insulation. Install a fuse on the power input line. | | Grounding | Properly ground all devices to a common ground. Strictly prohibit hot-plugging while power is on. | ### Operational Safety | Hazard | Precaution | |--------|------------| | Overheating | Ensure adequate ventilation. Operating temperature: -20°C to +70°C. | | ESD | Use anti-static precautions when handling. Discharge static before touching terminals. | | Mounting | Secure the device firmly. Do not operate with loose mounting. | ### CAN Bus Safety | Hazard | Precaution | |--------|------------| | Termination | Install 120Ω termination resistors at both ends of the CAN bus. | | Hot-Plugging | Strictly prohibit hot-plugging while power is on. May cause device burnout. | | Cable Length | Use twisted pair cable. Keep branch lines under 20 cm for long-distance runs. | ## Applications :::grid{cols=3 style=card} **Legacy Device Integration** Connect RS232 equipment to modern CAN bus motor networks without replacing existing hardware. **Networked Motion Control** Control distributed CAN bus motors over Ethernet from a central PC or PLC. **Rapid Prototyping** Quickly build and test CAN bus motor control systems with Arduino before committing to production hardware. ::: --- ## Related Products | Product | Description | |---------|-------------| | UIM342 | CAN bus smart motor controller | | UIC320A | USB to CAN 2.0B adapter (isolated) | | UIM0808 | 8-ch digital I/O CAN bus module | | UIM1616 | 16-ch digital I/O CAN bus module | | MMC90X | Miniature motion control computer | --- ## Resources :::tip Download datasheets, user manuals, and sample code from the [UIROBOT Download Center](https://www.uirobot.com/serve/list-437.html). ::: - **UIM2513 Datasheet** — PDF - **UIM2523 Datasheet** — PDF - **UI-MCP2515 Datasheet** — PDF - **Arduino Examples** — MCP2515 driver, motor control - **Python Examples** — python-can integration --- *Last Updated: 2026-06-25*