{
  "spec_version": 1,
  "slug": "eastron-sdm72d",
  "manufacturer": "Eastron",
  "model": "SDM72D-M",
  "category": "Energy meter",
  "supplier_url": "https://www.eastroneurope.com/products/sdm72d-modbus",
  "default_configuration": {
    "protocol": "modbus_tcp",
    "port": 502,
    "unit_id": 1,
    "addressing": "zero_based",
    "byte_order": "BigEndian",
    "word_order": "HighFirst",
    "native_interface": "rs485",
    "serial": {
      "parity": "None",
      "baud_rate": 9600,
      "data_bits": 8,
      "stop_bits": 1
    }
  },
  "coils": [],
  "discrete_inputs": [],
  "input_registers": [
    {
      "address": 0,
      "count": 2,
      "name": "L1 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 2,
      "count": 2,
      "name": "L2 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 4,
      "count": 2,
      "name": "L3 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 6,
      "count": 2,
      "name": "L1 Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 8,
      "count": 2,
      "name": "L2 Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 10,
      "count": 2,
      "name": "L3 Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 12,
      "count": 2,
      "name": "L1 Power (Active)",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 14,
      "count": 2,
      "name": "L2 Power (Active)",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 16,
      "count": 2,
      "name": "L3 Power (Active)",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 18,
      "count": 2,
      "name": "L1 Power (Apparent)",
      "data_type": "Float32",
      "units": "VA",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 20,
      "count": 2,
      "name": "L2 Power (Apparent)",
      "data_type": "Float32",
      "units": "VA",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 22,
      "count": 2,
      "name": "L3 Power (Apparent)",
      "data_type": "Float32",
      "units": "VA",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 24,
      "count": 2,
      "name": "L1 Power (Reactive)",
      "data_type": "Float32",
      "units": "VAr",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 26,
      "count": 2,
      "name": "L2 Power (Reactive)",
      "data_type": "Float32",
      "units": "VAr",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 28,
      "count": 2,
      "name": "L3 Power (Reactive)",
      "data_type": "Float32",
      "units": "VAr",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 30,
      "count": 2,
      "name": "L1 Power Factor",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 32,
      "count": 2,
      "name": "L2 Power Factor",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 34,
      "count": 2,
      "name": "L3 Power Factor",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 42,
      "count": 2,
      "name": "L-N Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 46,
      "count": 2,
      "name": "L-N Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 48,
      "count": 2,
      "name": "Total Line Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 52,
      "count": 2,
      "name": "Total Power",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 56,
      "count": 2,
      "name": "Total Power (Apparent)",
      "data_type": "Float32",
      "units": "VA",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 60,
      "count": 2,
      "name": "Total Power (Reactive)",
      "data_type": "Float32",
      "units": "VAr",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 62,
      "count": 2,
      "name": "Total Power Factor",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 70,
      "count": 2,
      "name": "Frequency",
      "data_type": "Float32",
      "units": "Hz",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 72,
      "count": 2,
      "name": "Imported Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 74,
      "count": 2,
      "name": "Exported Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 200,
      "count": 2,
      "name": "L1-L2 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 202,
      "count": 2,
      "name": "L2-L3 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 204,
      "count": 2,
      "name": "L3-L1 Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 206,
      "count": 2,
      "name": "L-L Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 224,
      "count": 2,
      "name": "Neutral Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 342,
      "count": 2,
      "name": "Total Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 344,
      "count": 2,
      "name": "Total Energy (Reactive)",
      "data_type": "Float32",
      "units": "kVArh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 384,
      "count": 2,
      "name": "Resettable Total Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 388,
      "count": 2,
      "name": "Resettable Import Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 390,
      "count": 2,
      "name": "Resettable Export Energy (Active)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 396,
      "count": 2,
      "name": "Net kWh (Import - Export)",
      "data_type": "Float32",
      "units": "kWh",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 1280,
      "count": 2,
      "name": "Total Import Power (Active)",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    },
    {
      "address": 1282,
      "count": 2,
      "name": "Total Export Power (Active)",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "R"
    }
  ],
  "holding_registers": [
    {
      "address": 0,
      "count": 2,
      "name": "Demand Time",
      "data_type": "Float32",
      "units": "s",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 2,
      "count": 2,
      "name": "Demand Period",
      "data_type": "Float32",
      "units": "s",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 6,
      "count": 2,
      "name": "System Voltage",
      "data_type": "Float32",
      "units": "V",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 8,
      "count": 2,
      "name": "System Current",
      "data_type": "Float32",
      "units": "A",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 10,
      "count": 2,
      "name": "System Type",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW",
      "description": "Values: 1 = 1P2W, 2 = 3P3W, 3 = 3P4W."
    },
    {
      "address": 12,
      "count": 2,
      "name": "Relay Pulse Width",
      "data_type": "Float32",
      "units": "ms",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 18,
      "count": 2,
      "name": "Network Parity Stop",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW",
      "description": "Values: 0 = N-1, 1 = E-1, 2 = O-1, 3 = N-2."
    },
    {
      "address": 20,
      "count": 2,
      "name": "Meter ID",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 24,
      "count": 2,
      "name": "Password",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 28,
      "count": 2,
      "name": "Baud Rate",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW",
      "description": "Values: 0 = 2400, 1 = 4800, 2 = 9600, 3 = 19200, 4 = 38400."
    },
    {
      "address": 36,
      "count": 2,
      "name": "System Power",
      "data_type": "Float32",
      "units": "W",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW"
    },
    {
      "address": 63760,
      "count": 2,
      "name": "P1 Divisor",
      "data_type": "Float32",
      "units": "",
      "scale_factor": 1,
      "offset": 0,
      "access": "RW",
      "description": "Values: 0 = 0.001kWh/imp, 1 = 0.01kWh/imp, 2 = 0.1kWh/imp, 3 = 1kWh/imp, 4 = 10kWh/imp, 5 = 100kWh/imp."
    }
  ],
  "combined_registers": [],
  "notes": "RS-485 device: reach it through a Modbus RTU-to-TCP gateway using the factory serial settings above. Measurements are IEEE-754 Float32 values (high word first) read with function code 04; the configuration registers are read/written with function code 03."
}