Unit loads
Unit loads
Sum standard loads and non-standard device loads.
Design Guides
M-Bus network design guide.
Start from the number of standard M-Bus unit loads, then add reserve, check cable length, topology and readout timing. The result determines whether a small, medium or high-current master is appropriate.
Design workflow
A practical design process should avoid selecting the master only by the exact number of meters. Reserve, topology, cable drop, meter current, addressing and service access all affect the final choice.
Reserve
Reserve
Add practical design margin for future meters and uncertainty.
Segmentation
Segmentation
Use separate segments or repeaters for long or dense networks.
Preliminary selection table
Use the table only as a first approximation. Final device limits should be validated with product documentation and actual meter data.
| Product | M-Bus capacity | Interfaces | Application |
|---|---|---|---|
| MBS-10 | M-Bus 10 · up to 10 Standard Loads | RS-485 + M-Bus Slave + M-Bus Master | Small installations and pilots. |
| MBS-200 | M-Bus 200 · up to 200 Standard Loads | RS-485 + M-Bus Slave + M-Bus Master | Buildings, BMS and industrial halls. |
| MBS-400 | M-Bus 400 · up to 400 Standard Loads | RS-485 + M-Bus Slave + M-Bus Master | Large facilities and extended networks. |
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