Protocol and technology guide

Modbus

Decades-old industrial protocol, still the default for PLCs, meters and inverters.

CategoryIndustrial / fieldbus
RangeBus length dependent
PowerWired
TopologyMaster / slave bus

Typical use

Energy meters, inverters, PLCs

Implementation checklist

1
Confirm certification

Check the exact product model, firmware and certification database rather than assuming a logo guarantees compatibility.

2
Map the transport

Separate the application standard from the physical transport, hub, border router and cloud dependency.

3
Verify the ecosystem

Test the app, account region, sharing, automation and offline behaviour before deployment.