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WinCC V7.0 Record Previous and new Adjustable parameters

Created by: tol at: 6/29/2011 12:04 AM (3 Replies)

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6/29/2011 12:04 AM	Rate (0)
tol Posts: 4 Rating: (0)	Dear Experts, i am wondering if you could suggest the best method in order to achieve the following in a WinCC V7.0 project: We have an adjustable parameter (setpoint) in a WinCC project. Lets say an operator changes the value of the parameter by typing a new value. How can we record the previous, the new value, the user name and the computer name in an event window. For example the event window should display something like that : Prev Val New Val User Computer 10 20 operator SRV1 We have tried some over complicated VB scripting so far, which is partially works, however i am finding it extremely strange that what we are trying to achieve is not straight forward. Please let me know if you require any further information on the above. I will be grateful if you provide me with any suggestion. Thank you in advance.
tol Posts: 4 Rating: (0)
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6/29/2011 1:53 PM	Rate (0)
Bizur Posts: 1530 Rating: (59)	Dear tol, what do you think about FAQ:How can you generate user-defined operator input messages in WinCC? as first beginning? Best regards Bizur
Bizur Posts: 1530 Rating: (59)
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7/1/2011 9:02 AM	Rate (0)
verosys Member Joined: 7/7/2010 Last visit: 10/22/2018 Posts: 3 Rating: (1)	Dear Tol, I use a I/O field where a process tag is attatched to the Output Value. A script is attached to the Change event of the input value. The Output value then holds the old parameter value, while the input value holds the new value. I also use the text value of a static string describing the parameter as alarm description. This script looks like this: Sub InputValue_OnPropertyChanged(ByVal Item, ByVal value) Call IOField_ParameterChange(value, Item.OutputValue, ScreenItems("szParameter").Text) End Sub Two global scripts are used to log the parameterchange One of them is the above script "IOField_ParameterChange" used normally. For Bit fields a seconds script "BitField_ParameterChange" is used. The script also enables the operator to enter a reason for the parameter change if this is configured in the system. See the attached file for those VBS scripts. Hoped this will help you Attachment Scripts.pdf (371 Downloads)

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4/16/2024 2:53 PM	Rate (0)
AutoGen_1833838 Joined: 2/29/2024 Last visit: 10/29/2024 Posts: 1 Rating: (0)	verosys Dear Tol, I use a I/O field where a process tag is attatched to the Output Value. A script is attached to the Change event of the input value. The Output value then holds the old parameter value, while the input value holds the new value. I also use the text value of a static string describing the parameter as alarm description. This script looks like this: Sub InputValue_OnPropertyChanged(ByVal Item, ByVal value) Call IOField_ParameterChange(value, Item.OutputValue, ScreenItems("szParameter").Text) End Sub Two global scripts are used to log the parameterchange One of them is the above script "IOField_ParameterChange" used normally. For Bit fields a seconds script "BitField_ParameterChange" is used. The script also enables the operator to enter a reason for the parameter change if this is configured in the system. See the attached file for those VBS scripts. Hoped this will help you Hi, Sir 1 - How on WinCC Explorer we can start this script? 2 - And we can use only one VBSCRIPT to all screems at project or we need create for each screen one vbscript related? 3 - What modifications to this script do we need to make to implement and test it? 4 - And, finally, where do I direct the code to write to a txt file, so that I can use it to consult the history? Thanks

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