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

    "name": "VARTA element S4 Grid",   // as displayed in the config dialog
    "manufacturer": "VARTA",
    "dev_type": "varta_grid",   // will be prefixed by "meter_"

   // "upd_delay": 8000,          // minimum interval between updates in msec
    // modbus parameters
    "rtu": {
        "silence_period": 50,    // msec
        "silence_same_slave": false,
        "retries": 4,
        "rcv_timeout": 120       // msec
    },
 //   "tcp": {
 //      "delay_after_connect": 1000 
 //   },
    "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,

    // values used to build the model string
   
    "type_designation": {
      "fixed": "VARTA/Grid"
    },
    "version": {
      "fixed": "1.0"
    },
    "firmware_version": {
      "fixed": "1.0"
    },
    "serial": {
      "address": 1054,  // modbus address as number
      "type": "string",   // zero terminated
      "length": 10         // string length in registers
    },


    // instantaneous values
 
    "power_w": {
        "address": 1078,
        "type": "int16",
//        "order": "hl",
        "resolution": -1.0   // result in W
    },
 
	
 }