Wago 750-377 FC Profinet, G3 Eco

Why Choose the WAGO 750-377 PROFINET IO Fieldbus Coupler?

The WAGO 750-377 is a PROFINET IO fieldbus coupler (3rd generation, ECO Advanced) designed to integrate the WAGO I/O System 750/753 with PROFINET industrial Ethernet networks. It enables reliable real-time communication between distributed field devices and PLC controllers in modern automation systems. :contentReference

During system initialisation the coupler automatically detects all connected digital, analogue and speciality I/O modules and creates a local process image. Digital signals are transmitted bit-by-bit while analogue and complex module data is transferred word-by-word, allowing efficient exchange of process data between field devices and the control system. :contentReference

The device includes an integrated two-port Ethernet switch, enabling simple line topology wiring without external switches or hubs. This simplifies network architecture and reduces infrastructure requirements in distributed automation installations. :contentReference

Key Advantages

• Reliable PROFINET IO real-time industrial Ethernet communication.
• Automatic detection and configuration of connected I/O modules.
• Integrated two-port Ethernet switch enabling line topology.
• Supports mixed installations of digital, analogue and speciality modules.
• Scalable architecture supporting up to 64 I/O modules per node.
• Supports advanced PROFINET features including PROFIsafe and PROFIenergy.

Key Features

• PROFINET IO fieldbus coupler for WAGO I/O System 750/753.
• 10/100 Mbit/s Ethernet communication.
• Integrated 2 × RJ-45 Ethernet ports with internal switch.
• Automatic generation of a local process image of connected modules.
• Device name assignment via DCP protocol or DIP switch.
• Supports diagnostics and topology detection.
• DIN rail mounting for industrial control cabinets.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750 / 753
• Model: 750-377
• Device type: PROFINET IO fieldbus coupler
• Communication protocol: PROFINET IO
• Ethernet speed: 10 / 100 Mbit/s
• Transmission method: 100Base-TX
• Network connection: 2 × RJ-45 Ethernet
• Transmission medium: Twisted pair S-UTP Cat.5
• Maximum segment length: 100 m
• Maximum modules per node: 64
• Input process image: up to 256 bytes
• Output process image: up to 256 bytes
• Supply voltage: 24 V DC (−25% to +30%)
• Mounting: DIN rail (EN 60715)
• Operating temperature: approx. 0 °C to +55 °C
• Ingress protection: IP20

PROFINET Industrial Network Integration

PROFINET is a widely adopted industrial Ethernet protocol used for high-performance communication between PLC controllers, distributed I/O modules and industrial devices. The WAGO 750-377 allows field-level sensors and actuators connected to WAGO I/O modules to communicate with automation controllers through this deterministic real-time network. :contentReference

Within the WAGO I/O architecture, the coupler automatically maps signals from connected modules into the PROFINET process image. This simplifies configuration and enables scalable distributed automation systems across manufacturing and process industries. :contentReference

Typical Applications

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

Trusted by Automation Engineers

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