device library

ABB M4M network analyzer

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

pointaddress (0-based)typescaleunit
energy_trend_data_block_1_033551U161kWh
max_min_demand_data_block_1_036737U161kW
alarm_number35935U161
entry_number32768U161
i_o_port_135851U161
energy_trend_data_block_1_133552U161kWh
energy_trend_data_block_1_233553U161kWh
energy_trend_data_block_1_333554U161kWh
energy_trend_data_block_1_433555U161kWh
energy_trend_data_block_1_533556U161kWh
energy_trend_data_block_1_633557U161kWh
energy_trend_data_block_1_733558U161kWh

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

Device not here? Upload its manual and get a checked map back. It's free.

Want it confirmed against your own device? Order hardware verification. If it doesn't check out, you don't pay.

Building on a lot of devices? License the library — machine-readable maps, the firmware matrix, and API access.