M-Bus Level Converter Features

• M-Bus level converter for connecting third-party M-Bus meters to compatible master devices
• Available in 3, 20, 60, 120 and 250 unit-load variants
• Supports M-Bus communications via RS232 and RS485
• 1 x RS232 connection
• 1 x RS485 connection
• 1 x M-Bus connection using M+ and M- terminals
• Transmission rate from 300 to 9600 Baud
• LED indicators for power, bus activity, health and communications
• Designed to withstand sustained short circuits
• Compact DIN-rail mounting for control panels and metering enclosures
• Suitable for heat, cooling, electricity, gas and water metering applications

Supported Interfaces and M-Bus Unit Load Options

The SIPslice M-Bus Level Converter is available in multiple unit-load sizes to suit different project requirements.

Available unit-load variants:

• 3 unit loads
• 20 unit loads
• 60 unit loads
• 120 unit loads
• 250 unit loads

Supported connections:

• RS232
• RS485
• M-Bus protocol using M+ and M- terminals

Supported transmission rate:

• 300 to 9600 Baud

This makes the converter suitable for small metering installations as well as larger BMS and energy monitoring projects with multiple M-Bus devices.

Compact DIN-Rail M-Bus Converter for Control Panels

The SIPslice M-Bus Level Converter has a compact footprint and DIN-rail mounting, making it suitable for metering panels, BMS control panels and plant-room installations.
It is designed to simplify M-Bus commissioning by providing clear LED indication for power, bus activity, health and communications. Engineers can also access Synapsys commissioning tools and technical documentation through the SIP Integrator support website.

Simple M-Bus Meter Integration via RS232 or RS485

The SIPslice M-Bus Level Converter is designed for receiving data from multiple 1.5mA M-Bus meter loads using the M-Bus protocol.

It supports M-Bus communications through both RS232 and RS485 connections, allowing compatible M-Bus master devices to communicate with connected meters. The converter is available in 3, 20, 60, 120 and 250 unit-load variants, giving engineers the flexibility to select the right model for the number of connected M-Bus devices.

The unit is also designed to withstand sustained short circuits, helping support reliable operation in demanding metering and BMS environments.

Typical Applications

Use the SIPslice M-Bus Level Converter when you need to connect M-Bus meters or pulse counters to a compatible M-Bus master device.

Common applications include:

• Building Management Systems (BMS)
• Energy monitoring systems
• Heat and cooling meter integration
• Electricity meter integration
• Gas and water meter integration
• Plant-room metering panels
• Commercial building metering
• Data centre metering
• Healthcare, education, retail and industrial sites
• Trend controller M-Bus integration
• Tridium JACE M-Bus integration
• SIP hardware M-Bus integration

Compatible M-Bus Master Devices

The SIPslice M-Bus Level Converter can be used with compatible M-Bus master devices and BMS hardware, including:

• Synapsys SIP+ hardware
• Trend controllers with M-Bus driver
• Distech systems
• PRIVA systems
• TONN systems
• JACE and Tridium devices
• Other compatible M-Bus master devices, subject to project requirements

This helps building controls engineers integrate third-party M-Bus meters into existing metering and BMS infrastructure.

Technical Specifications

• Device type: Interface
• Available unit-load variants: 3, 20, 60, 120 and 250
• Operating temperature: 0°C to 70°C
• Storage temperature: -25°C to 85°C
• Mounting: DIN rail
• Input voltage: 24VDC
• Power consumption: 0.65A
• M-Bus voltage: 33.5V across all variants
• Length: 25mm
• Width: 54mm
• Height: 90mm
• Colour: Grey

Frequently Asked Questions

What does the SIPslice M-Bus Level Converter do?

The SIPslice M-Bus Level Converter connects third-party M-Bus meters and pulse counters to compatible M-Bus master devices using RS232 or RS485.

How many M-Bus devices can it support?

The converter is available in 3, 20, 60, 120 and 250 unit-load variants, so engineers can select the correct model for the number of connected M-Bus devices.

Does it support both RS232 and RS485?

Yes. The SIPslice M-Bus Level Converter supports M-Bus communications via both RS232 and RS485 connections.

What types of meters can it be used with?

It can be used with M-Bus meters for heat, cooling, electricity, gas and water metering applications. It can also be used where pulse counters are part of the M-Bus metering setup.

Is it suitable for BMS integration?

Yes. The converter is suitable for BMS and energy monitoring projects where M-Bus meters need to communicate with compatible master devices such as SIP hardware, Trend controllers, PRIVA, JACE or Tridium systems.

Is the converter DIN-rail mounted?

Yes. The SIPslice M-Bus Level Converter is designed for DIN-rail mounting, making it suitable for control panels, metering panels and plant-room installations.

Is this the same as an M-Bus IP gateway?

No. This product is an M-Bus level converter for RS232/RS485 M-Bus integration. If you need to connect M-Bus, Modbus or pulse meters to a TCP/IP network, use the Synapsys SIP IP Converter.