Wago 750-342 FC Ethernet, G1

Why Choose the WAGO 750-342 Ethernet TCP/IP Fieldbus Coupler?

The WAGO 750-342 is an Ethernet TCP/IP fieldbus coupler designed to integrate the modular WAGO I/O System 750/753 into industrial Ethernet networks. Acting as the communication gateway between field devices and control systems, the coupler exchanges process data between connected I/O modules and PLC or supervisory systems over standard Ethernet infrastructure.

During system start-up the coupler automatically detects all installed digital, analogue and specialty I/O modules and creates a local process image of the inputs and outputs. Digital signals are transmitted bit-by-bit, while analogue values are transferred as bytes or words, allowing efficient process communication across distributed automation systems. :contentReference

Using standard Ethernet TCP/IP communication, the coupler enables data exchange between industrial automation systems and enterprise networks. It also supports web-based diagnostics and configuration, allowing engineers to access device status and I/O data using a standard web browser. :contentReference

Key Advantages

• Reliable Ethernet TCP/IP communication interface for distributed I/O systems.
• Automatic detection and configuration of connected I/O modules.
• Supports mixed installations of digital, analogue and specialty modules.
• Integration with standard LAN and industrial Ethernet networks.
• Supports up to 64 I/O modules per node.
• Web-based diagnostics and configuration interface.

Key Features

• Ethernet TCP/IP fieldbus coupler for WAGO I/O System 750/753.
• Supports communication via MODBUS/TCP and MODBUS/UDP.
• Integrated HTTP web server for diagnostics and configuration.
• RJ-45 Ethernet connection.
• Automatic creation of a local process image for connected modules.
• Supports distributed automation architectures.
• DIN rail mounting for industrial control cabinets.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750 / 753
• Model: 750-342
• Device type: Ethernet fieldbus coupler
• Communication protocols: Ethernet TCP/IP, MODBUS/TCP, MODBUS/UDP, HTTP
• Transmission speed: 10 Mbit/s
• Network connection: RJ-45 Ethernet port
• Maximum modules per node: 64
• Input process image: up to 512 bytes
• Output process image: up to 512 bytes
• Supply voltage: 24 V DC (−25% to +30%)
• Power jumper contact current: up to 10 A
• Mounting: DIN rail (EN 60715)
• Operating temperature: 0 °C to +55 °C
• Ingress protection: IP20

Industrial Automation Ethernet Communication

Industrial Ethernet networks are widely used to connect PLC controllers, distributed I/O modules and supervisory systems. The WAGO 750-342 allows field-level devices to communicate directly with control systems via Ethernet, enabling seamless integration with factory networks and enterprise systems. :contentReference

Within the WAGO I/O System architecture, the coupler automatically maps signals from connected modules into the Ethernet process image. This simplifies system configuration and allows scalable distributed automation systems to be implemented across manufacturing environments. :contentReference

Typical Applications

• Distributed PLC I/O systems using Ethernet networks.
• Industrial machine automation.
• Factory automation and production systems.
• Process monitoring and control applications.
• Integration of sensors, actuators and analogue devices.

Trusted by Automation Engineers

WAGO Ethernet fieldbus couplers are widely used by system integrators and automation engineers to connect distributed I/O modules to industrial Ethernet control networks.