{
            // Water as S0 meter

            "enabled": true,                // disabled meters will be ignored (default)
            "allowskip": true,                   // errors when opening meter may be ignored if enabled
            "protocol": "s0",               // meter protocol, see 'vzlogger -h' for full list
            "device": "/dev/ttyUSB0",       // meter device

            "aggtime": -1,                   // aggregate meter readings and send middleware update after <aggtime> seconds
            "aggfixedinterval": true,       // round timestamps to nearest <aggtime> before sending to middleware

            "channel": {
                "identifier": "Impulse",    // s0 meter knows "Impulse" and "Power"
                "uuid": "<uuid>",
                "aggmode": "SUM",           // aggregation mode: aggregate meter readings during <aggtime> interval
                                            //   "SUM": add readings (use for s0 impulses)
                                            //   "MAX": maximum value (use for meters sending absolute readings)
                                            //   "AVG": average value (use for meters sending current usage)
                "middleware": "http://localhost/middleware.php"
            }
    }   // meter