Item no. 750-643

MP-Bus Master


The 750-643 I/O module acts as a master for the MP bus (Multi Point Bus from Belimo/Switzerland) and allows the bus to be integrated into a higher level bus network such as Ethernet or LONWORKS®. The MP-bus controls HVAC actuators for dampers, regulator valves or VAV air volume controls. An additional product series for MP bus connection is the window ventilation system (FLS) from Belimo (MP bus connection for Belimo actuators, see Belimo documentation).

Devices that are equipped with an MP Bus connection, e.g. the Belimo MFT actuator series, can communicate with a higher level control via bus cable. The actuators have connections for active and passive sensors (temperature, humidity, ON/OF switch, etc.), and are accessible via MP-Bus. An MP bus master, i.e., the WAGO I/O module, can manage up to 8 slaves (actuators) + 8 sensors (1 sensor can be connected to each slave) via a common bus line, which considerably reduces the wiring effort involved (for the actuators and sensors)(cable lengths for MP bus lines, see Belimo documentation*). *Documentation available in German and English.

A Belimo parameterization unit (hand-held control unit, or Belimo PC tool) can be connected to the module to configure the Belimo actuators. The enable handheld contact can be used for this. The module deactivates its MP bus communication when the external parameterization unit is connected to this contact (or simply to the +24V power supply).

Product details


Technical Data

Topology No. of slaves: max. 8
Current consumption typ. 25 mA (MP-Bus)
Bit width 1 byte C/S, 7 byte data
Power supply MP-Bus: DC 24 V, über Leistungskontakte
System supply voltage DC 5 V; via data contacts
Current consumption, system supply 15 mA
Field supply voltage DC 24 V; über Leistungskontakte; zur Weiterleitung getunnelt
Isolation 500 V eff MP-bus/system
Number of incoming power jumper contacts 2
Number of outgoing power jumper contacts 2

Connection data

Connection technology: inputs/outputs 8 x CAGE CLAMP®
Connection type (1) Inputs/Outputs
Solid conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Fine-stranded conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Strip length 8 … 9 mm / 0.31 … 0.35 Inch

Geometrical Data

Width 12 mm / 0.472 inch
Height 69.8 mm / 2.748 inch
Height from upper-edge of DIN-35 rail 62.6 mm / 2.465 inch
Depth 100 mm / 3.937 inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color light gray
Housing material Polycarbonate, polyamide 6.6
Fire load 0.95 MJ
Weight 50.474 g
Conformity marking CE

Environmental Requirements

Surrounding air (operating) temperature 0 … 55 °C
Surrounding air (storage) temperature -40 … 85 °C
Degree of protection IP20
Degree of pollution (5) 2 per IEC 61131-2
Operating altitude 0 … 2000 m
Mounting position horizontal (standing/lying) or vertical
Relative air humidity (no condensation) 95 %
Vibration resistance acc. to IEC 60068-2-6
Shock resistance 15g per IEC 60068-2-27
EMC immunity to interference acc. to EN 61000-6-2
EMC emission of interference acc. to EN 61000-6-3
Exposure to pollutants Per IEC 60068-2-42 and IEC 60068-2-43
Permissible H2S contaminant concentration at a relative humidity < 75 % 10 ppm
Permissible SO2 contaminant concentration at a relative humidity < 75 % 25 ppm

Commercial data

Country of Origin DE
GTIN 4045454394011
Customs Tariff No. 85389099990
Product Group 15 (Remote I/O)

Approvals / Certificates


Certificate name
Approval: ATEX
TUEV Nord Cert GmbH
Certificate name: TÜV 07 ATEX 554086 X en.
Approval: TUEV Nord
TUEV Nord Cert GmbH
Certificate name: IECEx TUN 09.0001 X
Approval: UL
Underwriters Laboratories Inc.
Certificate name: E198726 Sec.1


Certificate name
Approval: UL
UL International Netherlands B.V.
Certificate name: E175199 Sec.1




MP Bus Master Module
Feb 7, 2012
366.8 kB

Bid Text

750-643 IO-Klemmen
Jan 21, 2016
DOC 28.2 kB

System Description

750/753 Series I/O-System ‒ General Product Information
May 29, 2018
2.0 MB
Overview on WAGO-I/O-SYSTEM 750 approvals
Jun 6, 2017
314.9 kB
Use in Hazardous Environments Term definition, marking and installation regulations
May 8, 2014
1.0 MB
Design Notes Basic conditions and recommendations for higher operational safety
May 3, 2011
1.5 MB

Application Notes

Application Note CoDeSys 2.3

Application Note: MpBus_03 Library This Application Note explains how a WAGO fieldbus controller sets up communication to the MP-bus actuators via the MP-bus master module (750-643).
Apr 13, 2018
1.4 MB

Application Note e!COCKPIT

eCOCKPIT application note WagoAppMP_Bus This Application Note explains how a WAGO fieldbus controller sets up communication to the MP-bus actuators via the MP-bus master module (750-643).
Jan 23, 2018
983.4 kB



Libraries for Building Automation CODESYS 2.3 This Zip-File contains WAGO I/O PRO libraries for Building Automation The following applications are supported: - DALI - DALI Sensors - DALI Colour Control - DALI Emergency Lighting - Enocean - SMI - HVAC Functions - Blind control, Dimmer, Latching Relay ... - Scheduler - KNX Functionblocks - BACnet - WINSTA Blind Control - DMX - Weather Station Elsner - M-Bus, MBus - MP-Bus, MPBus - Romutec - Thermokon WRF06 - Thermokon WRF08 - 3-Phase Power Measurement 750-493 - LON - Grundfos GENIbus Interface
Aug 24, 2018
ZIP 65.8 MB


CAD data

3D Download 750-643

Device Files

Device Driver

WAGO USB Service Cable Driver / 750 and 857 Series, Sep 10, 2014
ZIP 4.8 MB

Compatible products

Carrier rail

Marking accessories

Supply module

shield connection

Product family

750/753 Series I/O-System

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