try {
	var energyMeterOneMachineStateHistory = Things["energyMeter1"].QueryNumberPropertyHistory({
		oldestFirst: undefined /* BOOLEAN */ ,
		maxItems: undefined /* NUMBER {"defaultValue":500} */ ,
		propertyName: "ActivePower" /* STRING */ ,
		endDate: undefined /* DATETIME */ ,
		query: undefined /* QUERY */ ,
		startDate: undefined /* DATETIME */
	});


	var energyMeterTwoMachineStateHistory = Things["energymeter2"].QueryNumberPropertyHistory({
		oldestFirst: undefined /* BOOLEAN */ ,
		maxItems: undefined /* NUMBER {"defaultValue":500} */ ,
		propertyName: "ActivePower" /* STRING */ ,
		endDate: undefined /* DATETIME */ ,
		query: undefined /* QUERY */ ,
		startDate: undefined /* DATETIME */
	});

 
//    
//	var energyMeterThreeMachineStateHistory = Things["energyMeter1"].QueryNumberPropertyHistory({
//		oldestFirst: undefined /* BOOLEAN */ ,
//		maxItems: undefined /* NUMBER {"defaultValue":500} */ ,
//		propertyName: "MachinStatus" /* STRING */ ,
//		endDate: undefined /* DATETIME */ ,
//		query: undefined /* QUERY */ ,
//		startDate: undefined /* DATETIME */
//	});


	energyMeterOneMachineStateHistory = Resources["InfoTableFunctions"].RenameField({
		t: energyMeterOneMachineStateHistory,
		from: "value",
		to: "energyMeter1_ActivePower"
	});
	energyMeterTwoMachineStateHistory = Resources["InfoTableFunctions"].RenameField({
		t: energyMeterTwoMachineStateHistory,
		from: "value",
		to: "energyMeter2_ActivePower"
	});
//	energyMeterThreeMachineStateHistory = Resources["InfoTableFunctions"].RenameField({
//		t: energyMeterTwoMachineStateHistory,
//		from: "value",
//		to: "MachinStatus"
//	});
    
	var params = {
		columns1: "*" /* STRING */ ,
		columns2: "*" /* STRING */ ,
		//columns3: "*" /* STRING */ ,
		joinType: "FULL" /* STRING */ ,
		t1: energyMeterOneMachineStateHistory /* INFOTABLE */ ,
		t2: energyMeterTwoMachineStateHistory /* INFOTABLE */ ,
		//t3: energyMeterThreeMachineStateHistory /* INFOTABLE */ ,
		joinColumns1: "timestamp" /* STRING */ ,
		joinColumns2: "timestamp" /* STRING */ ,
		//joinColumns3: "timestamp" /* STRING */
	};

	// result: INFOTABLE
	result = Resources["InfoTableFunctions"].Intersect(params);
 
} catch (err) {
	logger.info("OvensHistoricalData service error: " + err);
	logger.info("OvensHistoricalData service error: " + err.lineNumber);
}