Wago 750-316/300-000 FC Modbus, Rs232 115.2Kbd

Why Choose the WAGO 750-316/300-000 Modbus RTU Fieldbus Coupler?

The WAGO 750-316/300-000 is a Modbus RTU fieldbus coupler designed to connect the modular WAGO I/O System 750/753 to a Modbus network via an RS-232 communication interface. Acting as the communication gateway between field devices and the automation controller, the coupler exchanges process data between connected I/O modules and the Modbus master system.

The coupler automatically detects all connected digital, analogue and specialty modules and builds a local process image based on the installed module order. Digital signals are transmitted bit-by-bit, while analogue and specialty module data is transferred as words or bytes for efficient communication across the Modbus network. :contentReference

Designed for scalable automation architectures, the coupler can support up to 64 connected I/O modules within a single node, enabling flexible distributed control systems for machine automation, building systems and industrial process control. :contentReference

Key Advantages

• Reliable Modbus RTU communication via RS-232 interface.
• Automatic detection and configuration of connected I/O modules.
• Supports mixed configurations of digital, analogue and specialty modules.
• Scalable architecture supporting up to 64 modules per node.
• Efficient process data exchange between field devices and PLC systems.
• Compact DIN rail module designed for industrial automation cabinets.

Key Features

• Modbus RTU fieldbus coupler for WAGO I/O System 750/753.
• Communication via RS-232 interface.
• Selectable communication speed up to 115.2 kBd.
• Automatic generation of a local process image.
• Supports mixed digital and analogue I/O installations.
• 9-pin D-Sub communication connector.
• DIN rail mounting for industrial control cabinets.

Technical Specifications

• Manufacturer: WAGO
• Series: I/O System 750 / 753
• Model: 750-316/300-000
• Device type: Fieldbus coupler
• Communication protocol: Modbus RTU
• Communication interface: RS-232
• Transmission speed: up to 115.2 kBd
• Maximum modules per node: 64
• Maximum Modbus slaves: up to 247 devices per master
• Supply voltage: 24 V DC
• 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 communication bridge between distributed I/O modules and central control systems. The WAGO 750-316/300-000 enables sensors, actuators and automation equipment connected to WAGO I/O modules to communicate with PLC systems using the Modbus RTU protocol.

Within the WAGO I/O System architecture, the coupler automatically manages data exchange for all connected modules. Digital signals are transmitted bit-by-bit while analogue values are transferred as words or bytes within the process image created by the coupler. :contentReference

Typical Applications

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