WinCC flexible 2008 Tutorial - Introduction (Simatic manager S7) 

Hello. This is possible. An internal tag needs to be created in the SCADA system for the tag containing analog data from the PLC system. A formula should be written in the vbscript to convert feet to centimeters. In this formula, the data received from the PLC in feet units is multiplied by a value of 30.48 and then added to the newly created internal tag. The data in centimeters contained within the internal tag is then added to the SCADA screen for observation. vbscript can be written like this.... Sub ConvertFeetToCm() ' Read the value in feet Dim feetValue feetValue = SmartTags("analog_data_length_in_feet") ' Calculate the value in centimeters Dim cmValue cmValue = feetValue * 30.48 ' Write the value in centimeters to the new tag SmartTags("analog_data_length_in_cm") = cmValue End Sub