Wago 750-304 FC Interbus,

Why Choose the WAGO 750-304 INTERBUS Fieldbus Coupler?

The WAGO 750-304 is an INTERBUS fieldbus coupler designed to connect the modular WAGO I/O System 750 to an INTERBUS network. Acting as the communication interface between field devices and the automation controller, the coupler manages all connected I/O modules and transfers process data between the field level and the control system.

The coupler automatically detects and configures connected digital, analogue and specialty I/O modules, creating a local process image that represents the system’s inputs and outputs. This process image is then transmitted over the INTERBUS network to the PLC or control system for monitoring and control. :contentReference

Supporting up to 64 I/O modules per node and up to 4096 I/O points, the 750-304 provides a scalable solution for industrial automation, machine control and distributed I/O installations. :contentReference

Key Advantages

• Reliable INTERBUS communication interface for WAGO I/O systems.
• Automatic detection and configuration of connected I/O modules.
• Supports both digital and analogue I/O modules.
• Scalable architecture supporting up to 64 modules per node.
• Handles up to 4096 I/O points in a single network system.
• Compact DIN rail device for industrial control cabinets.

Key Features

• INTERBUS fieldbus coupler for WAGO I/O System 750.
• Automatic creation of a local process image for all connected modules.
• Supports mixed configurations of digital, analogue and speciality modules.
• 500 kBd communication speed.
• Integrated D-Sub 9 INTERBUS connection.
• DIN rail mounting for industrial automation cabinets.
• Designed for distributed I/O architectures.

Technical Specifications

• Manufacturer: WAGO
• Series: I/O System 750
• Model: 750-304
• Device type: Fieldbus coupler
• Communication protocol: INTERBUS
• Transmission speed: 500 kBd
• Maximum modules per node: 64
• Maximum I/O points: approx. 4096
• Process image size: up to 64 bytes input / 64 bytes output
• Supply voltage: 24 V DC (−15% to +20%)
• Power jumper contact current: up to 10 A
• Fieldbus connection: 9-pin D-Sub connector
• Mounting: DIN rail (EN 60715)
• Operating temperature: approx. 0 °C to +55 °C
• Ingress protection: IP20

Industrial Automation Fieldbus Communication

Fieldbus couplers act as the central communication interface between distributed I/O modules and automation controllers. The WAGO 750-304 connects field-level devices to an INTERBUS network, enabling real-time exchange of process data between sensors, actuators and PLC systems.

Within the WAGO I/O System 750 architecture, the coupler automatically manages the data flow of connected modules. Digital signals are transmitted bit-by-bit while analogue signals are transferred word-by-word, allowing mixed module configurations within a single distributed I/O node. :contentReference

Typical Applications

• Distributed PLC I/O systems using INTERBUS networks.
• Industrial machine automation.
• Factory automation and production equipment.
• Process monitoring and control systems.
• Integration of digital and analogue field devices.

Trusted by Automation Engineers

WAGO fieldbus couplers are widely used by machine builders and automation engineers to integrate distributed I/O modules into industrial control networks.