MBus to RS232 converters to read M-Bus meters through RS232

Industrial MBus to RS232 Converters

MBus to RS232 converters are designed to enable seamless communication between M-Bus-enabled utility meters and supervisory systems equipped with a serial RS-232 interface. These converters act as bridges between the Meter-Bus protocol and legacy serial communication, providing a simple and cost-effective way to collect and process metering data. Ideal for local meter reading, system diagnostics, and integration with industrial or building automation systems, MBus RS232 devices are compact, efficient, and easy to deploy.

The M-Bus protocol (Meter-Bus) is a European standard widely used for utility metering of water, gas, electricity, and heat. By using an MBus RS232 converter, users can interface with these meters through a traditional serial COM port on a PC, industrial controller, or data logger. This solution is particularly useful in retrofitting existing infrastructure where RS-232 ports are still present or where Ethernet and RS-485 interfaces are not suitable due to project constraints.

Reliable Serial Gateways for Smart Metering Applications

Our MBus to RS232 converters are available in multiple variants depending on your application size and meter network. Standard models support communication with 20, 40, 80, 160 or up to 250 M-Bus slave devices. These devices are built for DIN rail mounting in control panels or utility boxes and operate in harsh industrial environments with temperature ranges from -40°C to +85°C. Rugged metal or industrial-grade plastic housings ensure long-term performance and electromagnetic interference resistance.

Each converter features a dedicated M-Bus master interface for connecting meters and a serial RS-232 output (DB9 or screw terminal), enabling direct integration with PCs, SCADA systems, or programmable controllers. This allows for rapid deployment in systems that require minimal infrastructure upgrades while still supporting accurate meter data acquisition. These devices are commonly used in building automation, utility plants, remote monitoring cabinets, and test bench setups.

Integration with BMS, SCADA, and Serial Monitoring Tools

MBus RS232 converters are fully compatible with building management systems (BMS), SCADA platforms, and various types of meter reading software. Once connected to a PC, the converter typically creates a virtual COM port (vCOM), allowing data to be retrieved using standard M-Bus master software such as MBSheet, Relay Tools, or custom SCADA input blocks. This makes the device ideal for technicians, engineers, and integrators who need a compact and portable solution for meter configuration, testing, or field diagnostics.

All models are delivered with free configuration software that allows users to set M-Bus parameters, baud rate, port settings, and diagnostic features. In addition, several models offer LED indicators that provide visual feedback on communication status, power supply, and M-Bus line load. Depending on the project, converters can be powered via RS-232 or require an external DC source (typically 24V), depending on the number of meters to be supported and the load requirements.

A Flexible MBus RS232 Interface for Modern and Legacy Systems

Whether you are designing a metering system from scratch or modernizing an existing installation, MBus RS232 converters offer a simple, reliable, and proven solution for serial communication with utility meters. Their versatility makes them suitable for a wide range of environments — from residential buildings and commercial facilities to heavy industrial plants and municipal utility infrastructures. With support for multiple meters, compact design, and high interoperability, they remain a key component in any professional metering toolkit.

Browse our selection of MBus to RS232 converters to find the model that best fits your application. If you’re unsure which product is the right choice, contact our team for expert advice and assistance in selecting the optimal solution tailored to your technical and system requirements.