Create TagHistorianData Perspective View

Completing Call Business Connector Chart

For time savings, this View has been mostly pre-built and only requires students to complete it by adding script functionality to the Call BC Chart button.

Complete Call BC Chart Button Script

  • In the Perspective → Views → Tutorial → SOAP folder, open the View called TagHistorianData.

  • Expand the View in the Project Browser, right-click on btn_bc and select Configure Events...

  • Add the following script to the onActionPerformed event, to complete the Call BC Chart (btn_bc) button functionality.


Script for Call BC Chart Button

Copy Code
Python
	end = system.date.now()
	start = system.date.addMinutes(end, -int(self.getSibling("Slider").props.value))
		
	chartPath = 'Complete/SOAP/TagHistoryAverage'
	#Optional. Used to override default parameter values
	#parameterValues = None
	parameterValues = {
	'tagPaths' : 
	{'tagPathsRoot' : 
	  {
	  'Tank1Path': "[default]New Enterprise/Site 1/Tank 1 Level",
	  'Tank2Path': "[default]New Enterprise/Site 1/Tank 2 Level",
	  'Tank3Path': "[default]New Enterprise/Site 1/Tank 3 Level",
	  'Tank4Path': "[default]New Enterprise/Site 1/Tank 4 Level",
	  'Tank5Path': "[default]New Enterprise/Site 1/Tank 5 Level"
	  }
	 }, 
	'startDate' : start, 
	'endDate' : end
	}
	#Python list of chart parameters to retrieve values for. Pass in '*' to return all.
	returnThese = ['TagResponseData']
	#Executes and waits for the chart to complete before control returns to the script.
	returnedParams = system.mes.bc.executeChartSynchronous(chartPath, parameterValues, returnThese)
	
	dict = returnedParams['TagResponseData']['TagResponseDataRoot']
	data = []
		
	for key in dict.keys():
		value = dict[key]
		data.append({'Tank':key,'Value':value})

	self.parent.parent.getChild("Table").props.data = data


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