Need to connect M-Bus and OPC UA? The Weble WBox routes M-Bus OPC UA natively: one gateway speaks both protocols and maps data points in real time — no PC, no middleware, no cloud dependency.

M-Bus→WBoxgateway→OPC UAOne WBox gateway · native conversion · no PC

The protocols

M-Bus

M-Bus reads heat, water, gas and electricity meters over a dedicated 2-wire bus.

M-Bus driver →

OPC UA

OPC UA is the secure, platform-independent client/server standard for Industry 4.0 data exchange.

OPC UA driver →

Further reading: Wired vs wireless M-Bus: what is the difference? →

Example deployment

Typical scenario M-Bus metering into OPC UA An energy or IT platform standardises on OPC UA, while the heat, water and electricity meters — and Siemens RVD controllers — are on M-Bus. The WBox reads the meters and exposes each reading as an OPC UA node with proper units, so consumption history flows into the platform securely, with no proprietary M-Bus middleware. Technical documentation →

How the WBox bridges M-Bus and OPC UA

On the WBox you enable the M-Bus driver and the OPC UA driver, then map each point: a value read on the M-Bus side — the metering bus — is exposed on the OPC UA side — the industrial interoperability standard — and vice-versa. Conversion, scaling and logic run on the gateway itself.

Capacity & limits

  • M-Bus — M-Bus drives up to 190 metering slaves through a Weble level converter (250 per the standard).
  • OPC UA — OPC UA imposes no node limit — the address space scales with the server.

On the WBox, a driver licence enables the whole protocol — there is no artificial per-point tier to unlock. Capacity scales with the gateway model, from the compact S103 to the E413: you are bounded by the field bus, not by your licence.

Frequently asked questions

How do I connect M-Bus and OPC UA?

M-Bus is the metering bus and OPC UA is the industrial interoperability standard. A single WBox gateway runs the M-Bus and OPC UA drivers, speaks both protocols at once and maps the data points between them — no PC, no middleware, no cloud dependency.

Does data flow both ways?

M-Bus is metering, so that side is read-only: the WBox reads the meters and exposes the readings on the OPC UA side. On the same gateway it can additionally route writable protocols if the project needs it.

Do I need a PC, a PLC or proprietary hardware?

No. The M-Bus and OPC UA drivers are licence-activated on one WBox — no gateway PC, no intermediate PLC and no proprietary hardware.

Which WBox model do I need?

Any WBox with the M-Bus and OPC UA driver licences. The online configurator recommends the right model from your interfaces and point count.

Route M-Bus OPC UA on your project

Find the right WBox gateway for your installation, or get in touch to validate your case.

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