Wago 750-816/300-000 Controller Modbus, Rs232 115.2Kbd

Why Choose the WAGO 750-816/300-000 MODBUS Controller?

The WAGO 750-816/300-000 is a compact MODBUS programmable controller designed for distributed automation systems built on the WAGO I/O System 750. It combines a MODBUS fieldbus interface with integrated PLC functionality, allowing engineers to implement decentralised automation control and integrate modular digital and analogue I/O modules within industrial networks.

The controller communicates via an RS-232 serial interface using the MODBUS protocol with communication speeds up to 115.2 kBd. This allows reliable communication between automation controllers, industrial devices and supervisory systems across machine and process control installations. :contentReference

Using the IEC 61131-3 PLC programming standard, the controller can be programmed with WAGO-I/O-PRO software (CODESYS-based), enabling automation logic development using familiar languages such as Ladder Diagram, Function Block Diagram and Structured Text. :contentReference

Key Advantages

• Integrated PLC controller with MODBUS communication.
• RS-232 serial interface supporting up to 115.2 kBd.
• Supports IEC 61131-3 PLC programming.
• Compatible with the modular WAGO I/O System 750.
• Enables decentralised control architectures.
• Compact DIN-rail design for industrial control panels.

Key Features

• MODBUS programmable controller.
• Communication via RS-232 interface.
• Communication speeds from 150 Bd to 115.2 kBd.
• PLC programming using WAGO-I/O-PRO (CODESYS).
• Access to all fieldbus and I/O process data.
• Diagnostic LEDs for communication and status monitoring.
• DIN-rail mounting according to EN 60715.
• Supports expansion with WAGO 750 digital, analogue and special I/O modules.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750
• Model: 750-816/300-000
• Controller type: MODBUS programmable controller
• Communication protocol: MODBUS
• Communication interface: RS-232
• Maximum baud rate: 115.2 kBd
• Programming standard: IEC 61131-3
• Programming software: WAGO-I/O-PRO (CODESYS)
• Program memory: approx. 32 kB
• Data memory: approx. 32 kB
• Supply voltage: 24 V DC
• Mounting: DIN-35 rail
• Operating temperature: 0 to 55 °C
• Protection rating: IP20
• Expandable I/O: Supports multiple WAGO 750 series modules

MODBUS Control in Industrial Automation

MODBUS communication is widely used in industrial automation systems to connect controllers, sensors, drives and supervisory systems. Serial interfaces such as RS-232 provide reliable communication between devices across machine and process installations while enabling simple network integration. :contentReference

The WAGO 750-816/300-000 integrates PLC logic execution and MODBUS communication into a single device, enabling decentralised automation nodes that combine control intelligence with modular I/O expansion across industrial automation networks.

Typical Applications

• Distributed industrial automation systems.
• Machine control networks using MODBUS communication.
• Process monitoring and control installations.
• Remote I/O stations within industrial plants.
• Energy management and building automation systems.

Trusted by Automation Engineers

WAGO MODBUS controllers are widely used in industrial automation systems to deliver reliable PLC control and modular I/O integration across distributed communication networks.