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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