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

    "name": "AC ELWA 2",   // as displayed in the config dialog
    "manufacturer": "my-PV",
    "dev_type": "ac_elwa2",   // will be prefixed by "meter_"

    // modbus parameters
    "rtu": {
        "silence_period": 50,    // msec
        "silence_same_slave": false,
        "retries": 4,
        "rcv_timeout": 120       // msec
    },
    "modbus_read": 3,            // function code to read registers
    "modbus_read_max_registers": 96, 
    "modbus_write": 16,          // function code to write register(s)
    "modbus_write_max_registers": 64,

    "reserved": [0x7fffffff, 0xffffffff, 0x7fffffffffffffff, 0xffffffffffffffff],

    // values used to build the model string
    "type_designation": {
       "fixed": "AC ELWA 2"
    },
    
    // instantaneous values
    "power_w": {
        "address": 1074,
        "type": "int16"
    },
    "*temp": {
       "address": 1001,
       "type": "int16",
       "resolution": 0.1
    },
    "outputs": [
    {
       "address": "${if exists(charge_power_w)`http://localhost/cnf?cmd=modbus_set&addr=${address}&func=6&id=${id}&reg=1000&val=${charge_power_w}&type=w}"
    }
    ]
 }