751-9402 Wago Compact 100 PLC with 2 Analogue/16 Digital Inputs 4 Analogue/8 Digital Outputs

Why Choose the WAGO 751-9402 Compact Controller 100?

The WAGO 751-9402 Compact Controller 100 is a high-performance industrial programmable logic controller (PLC) with integrated I/O, designed for modern automation, energy management and building control applications. It combines powerful processing, flexible communications and onboard inputs and outputs within a compact DIN rail device, eliminating the need for separate I/O modules in many control systems.

Built on a real-time Linux operating system and programmable using CODESYS V3.5, the controller supports IEC 61131-3 programming languages while also enabling open technologies such as Node-RED, MQTT and Python for IIoT integration and advanced data processing. :contentReference

The controller integrates multiple digital and analogue channels, enabling direct connection to sensors, actuators and instrumentation devices while maintaining seamless communication with SCADA systems, fieldbus networks and cloud platforms.

Key Advantages

• Compact PLC controller with integrated I/O for space-efficient automation systems.
• Real-time Linux operating system with CODESYS V3.5 programming.
• Supports modern IIoT technologies including MQTT and Node-RED.
• Dual Ethernet interfaces for industrial networking.
• Configurable digital and analogue channels reduce the need for additional modules.
• Suitable for distributed energy, building automation and machine control systems.

Key Features

• Compact Controller 100 industrial PLC.
• 8 digital inputs and 8 configurable digital I/O channels.
• 2 analogue inputs and 2 configurable analogue I/O channels.
• 2 measurement inputs for RTD sensors such as PT100 and PT1000.
• Dual RS-485 communication interfaces.
• 2 × Ethernet ports for industrial networking.
• MicroSD card slot for program storage and data logging.
• DIN rail mounting for control cabinet installation.

Technical Specifications

• Manufacturer: WAGO
• Model: 751-9402
• Product type: Compact programmable logic controller (PLC)
• CPU: Dual-core Cortex-A7 processor, approx. 650 MHz
• Operating system: Real-time Linux
• Programming environment: CODESYS V3.5
• Memory: 512 MB RAM, 4 GB flash
• Digital inputs: 8
• Digital configurable I/O: 8
• Analogue inputs: 2
• Configurable analogue I/O: 2
• Measurement inputs: RTD sensors including Pt100, Pt1000, Ni100 and potentiometer signals
• Communication interfaces: 2 × Ethernet, 2 × RS-485
• Supported protocols: Modbus TCP/UDP, EtherCAT, EtherNet/IP, OPC UA, MQTT
• Supply voltage: 24 V DC
• Mounting: 35 mm DIN rail
• Protection rating: IP20
• Operating temperature: −25 °C to +60 °C

Compact PLC Control for Modern Automation

The WAGO Compact Controller 100 series provides a powerful yet space-saving automation platform. By combining controller functionality with integrated I/O channels and networking interfaces, it simplifies system architecture while maintaining strong performance for machine control, energy management and distributed automation systems.

The controller supports common industrial communication protocols and open development tools, allowing engineers to combine traditional PLC logic with advanced IIoT data processing and remote monitoring capabilities. :contentReference

Typical Applications

• Industrial machine automation.
• Building automation and HVAC control.
• Energy monitoring and microgrid systems.
• Process control and instrumentation.
• Industrial IoT gateway and edge computing systems.

Trusted by Automation Engineers

WAGO compact PLC controllers are widely trusted by automation engineers and system integrators for reliable control, flexible programming and seamless industrial network integration.