{
    "rtype": 0,  // 0 = modbus, 1 = http/json
    "mtype": 2,  // 0 = other, 1 = meter, 2 = inverter, 4 = battery

    "name": "DC Power",   // as displayed in the config dialog
    "manufacturer": "Sample",
    "dev_type": "dc_power_sample",   // please change! must be a unique name 

    // modbus parameters
    "rtu": {
        "silence_period": 50,    // msec
        "silence_same_slave": false,
        "retries": 4,
        "rcv_timeout": 120       // msec
    },
    "modbus_read": 4,            // function code to read registers
    "modbus_read_max_registers": 60, 
    "modbus_write": 16,          // function code to write register(s)
    "modbus_write_max_registers": 48,

    // values used to build the model string
    "type_designation": {
        "address": 0,
        "type": "string",
        "fixed": "DC Power"
    },
    "version": {
        "address": 0,
        "type": "string",
        "fixed": "1.0"
    },
    "firmware_version": {
        "address": 0,
        "type": "string",
        "fixed": "1.0"
    },
    "serial": {
        "address": 0,
        "type": "string",
        "fixed": "0"
    },
    
    // instantaneous values
    
    "power_w": {
        "address": 30961,
        "type": "int32",
        "order": "hl",
        "resolution": 1.0
    },
 }