Config for collecting metrics from Sungrow inverter (tested on my SH5.0RS) with Telegraf, to publish to anywhere Telegraf supports

telegraf.conf.toml

[[inputs.modbus]]
  name = "Sungrow inverter"
  controller = "tcp://$SUNGROW_IP:502"
  
  slave_id = 1
  timeout = "1s"

  ## Define the configuration schema
  ##  |---register -- define fields per register type in the original style (only supports one slave ID)
  ##  |---request  -- define fields on a requests base
  configuration_type = "register"

  tagexclude = ["slave_id", "type"]

  ## Per register definition
  ##

  ## Digital Variables, Discrete Inputs and Coils
  ## measurement - the (optional) measurement name, defaults to "modbus"
  ## name        - the variable name
  ## address     - variable address

  discrete_inputs = [ ]
  coils = [ ]

  ## Analog Variables, Input Registers and Holding Registers
  ## measurement - the (optional) measurement name, defaults to "modbus"
  ## name        - the variable name
  ## byte_order  - the ordering of bytes
  ##  |---AB, ABCD   - Big Endian
  ##  |---BA, DCBA   - Little Endian
  ##  |---BADC       - Mid-Big Endian
  ##  |---CDAB       - Mid-Little Endian
  ## data_type  - INT16, UINT16, INT32, UINT32, INT64, UINT64,
  ##              FLOAT32-IEEE, FLOAT64-IEEE (the IEEE 754 binary representation)
  ##              FLOAT32, FIXED, UFIXED (fixed-point representation on input)
  ## scale      - the final numeric variable representation
  ## address    - variable address

  holding_registers = []
  input_registers = [
    { measurement = "Hz", name = "grid_frequency", byte_order = "AB", data_type = "UINT16", scale = 0.01, address = [5035] },
    { measurement = "V", name = "grid_voltage", byte_order = "AB", data_type = "UINT16", scale = 0.1, address = [5018] },
    { measurement = "A", name = "grid_current", byte_order = "AB", data_type = "INT16", scale = 0.1, address = [13030] },

    { measurement = "V", name = "mppt1_voltage", byte_order = "AB", data_type = "UINT16", scale = 0.1, address = [5010] },
    { measurement = "A", name = "mppt1_current", byte_order = "AB", data_type = "UINT16", scale = 0.1, address = [5011] },
    { measurement = "V", name = "mppt2_voltage", byte_order = "AB", data_type = "UINT16", scale = 0.1, address = [5012] },
    { measurement = "A", name = "mppt2_current", byte_order = "AB", data_type = "UINT16", scale = 0.1, address = [5013] },
    { measurement = "W", name = "dc_power", byte_order = "CDAB", data_type = "UINT32", scale = 1.0, address = [5016, 5017] },

    { measurement = "W", name = "ac_power", byte_order = "CDAB", data_type = "INT32", scale = 1.0, address = [13033, 13034] },
    { measurement = "var", name = "reactive_power", byte_order = "CDAB", data_type = "INT32", scale = 1.0, address = [5032, 5033] },
    { measurement = "%", name = "power_factor", byte_order = "AB", data_type = "INT16", scale = 0.1, address = [5034] },

    { measurement = "W", name = "load_power", byte_order = "CDAB", data_type = "INT32", scale = 1.0, address = [13007, 13008] },
    { measurement = "W", name = "export_power", byte_order = "CDAB", data_type = "INT32", scale = 1.0, address = [13009, 13010] },
  ]