Why Choose the WAGO 751-9401 Compact Controller 100?
The WAGO 751-9401 Compact Controller 100 is a powerful industrial PLC that combines integrated I/O, advanced networking and open automation capabilities within a compact DIN rail-mounted platform. Designed for machine control, building automation, utility applications and Industrial Internet of Things (IIoT) projects, it delivers PLC functionality alongside modern IT and cloud connectivity. The controller features a real-time Linux operating system, dual-core ARM processor and support for CODESYS V3.5 programming.
With 8 digital inputs, 4 digital outputs, 2 analogue inputs, 2 analogue outputs and 2 temperature measurement inputs, the 751-9401 provides versatile onboard I/O without requiring additional expansion modules. Integrated Ethernet, CAN/CANopen and RS-485 communications allow seamless integration into industrial control networks and modern IIoT architectures.
Supporting protocols including Modbus TCP, EtherCAT Master, EtherNet/IP, MQTT and OPC UA, the controller bridges operational technology and information technology, making it suitable for both traditional automation and cloud-connected applications.
Key Advantages
- Compact PLC with integrated digital, analogue and temperature I/O.
- Real-time Linux operating system.
- Dual-core ARM Cortex-A7 processor.
- Dual Ethernet ports for industrial networking.
- Integrated CAN and CANopen communications.
- RS-485 serial interface included.
- CODESYS V3.5 and Node-RED compatibility.
- Designed for automation, IIoT and edge computing applications.
Key Features
- 8 digital inputs.
- 4 digital outputs.
- 2 analogue inputs.
- 2 analogue outputs.
- 2 temperature measurement inputs (Pt1000/Ni1000).
- 2 × RJ45 Ethernet ports.
- CAN and CANopen communications.
- RS-485 serial interface.
- MicroSD card slot.
- ARM Cortex-A7 dual-core processor (650 MHz).
- Real-time Linux with PREEMPT_RT patch.
- CODESYS V3.5 programming environment.
- Node-RED support.
- Web visualisation capabilities.
- Industrial DIN rail mounting.
Built for Modern Industrial Connectivity
The WAGO 751-9401 combines industrial control functionality with advanced networking capabilities. Unlike conventional compact PLCs, it includes CAN/CANopen communications alongside Ethernet and RS-485 interfaces, enabling direct integration with sensors, field devices and distributed control systems. Its open Linux platform also supports Docker-based applications and modern edge computing strategies.
Support for MQTT, OPC UA and industrial Ethernet protocols allows seamless communication between field devices, SCADA systems and cloud platforms. This makes the controller particularly attractive for digitalisation projects and Industry 4.0 deployments.
Typical Applications
- Machine automation.
- Building management systems.
- Industrial process control.
- Energy monitoring.
- Utility and infrastructure projects.
- IIoT gateways.
- Edge computing systems.
- Water and wastewater applications.
