EBYTE M31 U CAN Series Industrial CANopen Distributed Remote I/O Modules

The M31 U CAN series is a full line of industrial-grade distributed remote I/O slave modules based on the standard CANopen protocol. This series provides 3 models with targeted I/O configurations to match diverse industrial automation needs: mixed signal I/O, high-speed transistor output, and high-power relay output. All modules support stackable expansion, seamless integration with mainstream PLCs, and robust industrial-grade protection, making them ideal for factory automation, process control, and SCADA systems. Model Comparison & Quick Selection Model I/O Configuration Output Type Core Advantage & Scenario M31-AFAX4440G-U-CAN 4DI + 4AI + 4DO Digital Output + High-precision Analog Input Mixed signal acquisition; for scenarios requiring both digital control and analog sensor data collection M31-AXAX8080G-U-CAN 8DI + 8DO PNP Transistor High-speed switching; for high-frequency low-power industrial load control and logic signal conversion M31-AXEX8080G-U-CAN 8DI + 8DO Electromagnetic Relay High-power load compatibility; supports both AC and DC loads, for valves, contactors and motors control Core Common Features Standard CANopen Protocol: Fully compliant with CANopen specifications, seamlessly compatible with mainstream PLCs, configuration software and host control systems. Flexible Modular Expansion: Supports up to 16 stackable I/O modules (including the host), expanding to a maximum of 256 I/O channels without replacing the main controller, greatly reducing deployment costs. Industrial-Grade Reliability: Built to EMC Level 3 protection standards, with full electrical isolation between power supply, logic circuits and I/O interfaces. Built-in ESD, lightning surge, fast transient burst and reverse polarity protection. Easy Configuration & Deployment: Device parameters can be configured conveniently via the built-in Ethernet port; supports standard 35mm DIN rail mounting or screw mounting for quick integration into industrial cabinets. Wide Voltage Power Supply: Supports DC 9~36V wide range input, adapting to complex and unstable industrial field power environments. Detailed Technical Specifications by Model 1. M31-AFAX4440G-U-CAN (4DI + 4AI + 4DO Mixed Type) This mixed-signal I/O module integrates high-precision analog acquisition and digital input/output functions in one compact unit, suitable for comprehensive data acquisition and control scenarios with both sensor signals and switching devices. Model M31-AFAX4440G-U-CAN Communication Protocol Standard CANopen I/O Configuration 4 Digital Inputs (DI) + 4 Analog Inputs (AI) + 4 Digital Outputs (DO) Analog Input Specs 16-bit resolution, differential input, accuracy ≤ 1‰ Supply Voltage DC 9～36V Protection Level Industrial EMC Level 3, ESD, Surge, Reverse Polarity Protection Mounting Type 35mm DIN Rail / Screw Mounting 2. M31-AXAX8080G-U-CAN (8DI + 8DO PNP Transistor Type) High-speed digital I/O module with PNP transistor outputs, designed for high-frequency switching scenarios, providing fast response speed and reliable low-power load control performance. Model M31-AXAX8080G-U-CAN Communication Protocol Standard CANopen I/O Configuration 8 Digital Inputs (DI) + 8 Digital Outputs (DO, PNP Transistor) Output Feature High-speed switching, suitable for low-power industrial loads and logic level conversion Supply Voltage DC 9～36V Isolation Standard Full electrical isolation between power, logic and I/O circuits Mounting Type 35mm DIN Rail / Positioning Hole Mounting 3. M31-AXEX8080G-U-CAN (8DI + 8DO Relay Type) Robust I/O module with electromagnetic relay outputs, supporting both AC and DC high-power loads, with strong versatility and adaptability for diverse field equipment control scenarios. Model M31-AXEX8080G-U-CAN Communication Protocol Standard CANopen I/O Configuration 8 Digital Inputs (DI) + 8 Digital Outputs (DO, Electromagnetic Relay) Output Feature Supports both AC and DC loads, high power capacity, ideal for valves, contactors, motors control Supply Voltage DC 9～36V Protection Standards EMC Level 3, ESD, Fast Transient Burst Protection Mounting Type 35mm DIN Rail Mounting, Industrial Compact Enclosure Typical Applications Factory Automation & PLC Distributed Networking Industrial Process Control & On-site Data Acquisition SCADA Systems & Remote Equipment Monitoring Smart Grid & Substation Automation Control Building Automation & HVAC Control Systems Warehouse Logistics & Machinery Equipment Automation Pump, Valve & Heavy Electrical Equipment Control