Wago 750-643 MP-Bus master module

Wago 750-643 MP-Bus master module

WAGO 750-643 MP-Bus master module for WAGO I/O System 750 enabling integration of Belimo MP-Bus actuators and sensors into PLC automation systems.

SKU: 750-643Alt SKU: 750643MPN: 750-643
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£257.12

Why Choose the WAGO 750-643 MP-Bus Master Module?

The WAGO 750-643 is a specialised MP-Bus master communication module designed for integration within the WAGO I/O System 750. It enables PLC and controller systems to connect directly to MP-Bus devices such as HVAC actuators and sensors used in building automation and environmental control systems.

The module acts as the master for the Belimo MP-Bus (Multi-Point Bus), allowing MP-Bus networks to be integrated into higher-level automation systems such as Ethernet-based or fieldbus control platforms. This allows centralised monitoring and control of HVAC components including dampers, valve actuators and variable air volume (VAV) systems. :contentReference

A single MP-Bus line can connect multiple actuators and sensors, significantly reducing wiring complexity while maintaining reliable communication between field devices and the control system.

Key Advantages

  • Integrated MP-Bus master interface for HVAC automation.
  • Connects Belimo MP-Bus actuators and sensors directly to PLC systems.
  • Supports up to 8 MP-Bus slave devices on one bus line.
  • Allows connection of one sensor per actuator.
  • Reduces wiring complexity in building automation installations.
  • Compact DIN rail module for WAGO I/O System 750.

Key Features

  • MP-Bus master communication module.
  • Supports Belimo MP-Bus protocol.
  • Controls and monitors up to 8 MP-Bus slaves.
  • Supports actuator sensors such as temperature, humidity and switching signals.
  • Provides connection to higher-level control systems via the WAGO fieldbus controller.
  • Parameterisation possible using Belimo handheld or PC configuration tools.
  • Compact DIN rail installation with CAGE CLAMP® spring terminals.

MP-Bus Communication in Building Automation

The MP-Bus protocol is widely used in HVAC and building automation systems to connect actuators, sensors and controllers on a single communication line. Using a master-slave architecture, devices such as damper actuators, valve regulators and ventilation controllers can communicate with a central control system.

The WAGO 750-643 module enables these MP-Bus devices to be integrated directly into distributed PLC architectures, allowing building automation systems to be managed alongside industrial control processes within a single control platform. :contentReference

Typical Applications

  • HVAC control systems in commercial buildings.
  • Integration of Belimo MP-Bus actuators.
  • Variable air volume (VAV) control systems.
  • Automated ventilation and damper control.
  • Building energy management and environmental monitoring.

Technical Specifications

Voltage 24 V
IP Rating IP20
Series I/O System 750
Module type MP-Bus master communication module
Bus protocol Belimo MP-Bus (PP/MP specification)
Maximum slaves 8 MP-Bus devices
Sensor support 1 sensor per actuator
MP-Bus supply voltage 24 V DC
System supply voltage 5 V DC via internal system bus
Current consumption approx. 25 mA (MP-Bus)
Isolation approx. 500 V between MP-Bus and system bus
Connection technology WAGO CAGE CLAMP®
Mounting DIN-35 rail
Protection rating IP20
Operating temperature 0 to 55 °C
Module width approx. 12 mm
HS Code 85389099
Country of Manufacture Germany

Frequently Asked Questions

What is the WAGO 750-643 used for?

The module acts as an MP-Bus master that connects Belimo actuators and sensors to a WAGO PLC or automation system.

How many MP-Bus devices can be connected?

The module can manage up to 8 MP-Bus slave devices on a single bus network.

What types of devices connect to the MP-Bus?

Typical devices include damper actuators, valve actuators and VAV controllers used in HVAC systems.

Does the module support sensors?

Yes. Each actuator connected via MP-Bus can also provide access to a connected sensor such as temperature or humidity.

Which systems support this module?

The module integrates with WAGO I/O System 750 fieldbus couplers and programmable controllers.

Trusted by Building Automation Engineers

WAGO I/O System 750 modules are widely used in industrial and building automation projects to integrate HVAC devices, sensors and control systems within scalable PLC architectures.

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