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WinCC 7 - Faceplate instance I/O field smarttags

Created by: chrissss at: 2/20/2009 10:33 AM (5 Replies)

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2/20/2009 10:33 AM	Rate (0)
chrissss Posts: 12 Rating: (0)	We created an Faceplate Type which contains several buttons and an I/O field. The buttons manipulate the Smarttag value which is shown in the I/O field. The output value of the I/O field is configured as an external property. When we manually enter a value in the I/O field...AND press the ENTER key the value is written to the connected tag on the outside. When we use the button to manipulate the Smarttag of the I/O field, the value is shown inside the Faceplate Instance. It is however not written to the connected tag on the outside. Any help on how to solve this is appreciated... Also a best practice for reading and writing tags to the faceplate instance and from the outside world is appreciated.
chrissss Posts: 12 Rating: (0)
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2/20/2009 2:48 PM	Rate (1)
BadBit Posts: 125 Rating: (26)	Hi, you must rewrite the internal value to the external tag. I have solved this problem with a FPT-Event and an external direct connection: 1. Create an FPT-Event (see pic. "FPT_Event.jpg") 2. On this event of the faceplateinstance, create a direct connection. (see pic. "FPT-Object _Event.jpg") 3. configure the direct connection as following (see pic. "Tag_connection.jpg") 4. Don't forget to write the external value to internal tag: On the event "Output value > Change" of the internal "IO-Field" use this Script: Sub OutputValue_OnPropertyChanged(ByVal Item, ByVal value) SmartTags("Intern") = value Wnd Sub I hope this will helps you... Attachment FPT_Tag.zip (2440 Downloads)
BadBit Posts: 125 Rating: (26)	Last edited by: BadBit at: 2/20/2009 3:49 PM
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This contribution was helpful to 2 thankful Users akup2017 Björn_Axel_S

2/23/2009 8:39 AM	Rate (0)
chrissss Posts: 12 Rating: (0)	Thanks BadBit the direct connection solved it for us.
chrissss Posts: 12 Rating: (0)
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12/20/2010 9:44 AM	Rate (0)
ronny.dp Posts: 28 Rating: (0)	Hi , I have been studying this for a few hours now , Like the original poster , I have a faceplate with an IO_field and some buttons The external tag updates whenever the value is entered directly in the IO_field butif i use a button to change the IO_field value , the external tag does not change I followed BadBit's solution , except for step 4 , I don't get where the "intern" tag comes from. the buttons change the IO field value with VBS : [code]Sub OnClick(Byval Item) ScreenItems("IO_CMDW").OutputValue = &H1 End Sub [/code] ( also tried with the InputValue ) any help is appreciated , Ronny.
ronny.dp Posts: 28 Rating: (0)
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12/21/2010 12:22 PM	Rate (0)
r2407 Posts: 111 Rating: (0)	Hi BadBit, I did step by step what you had said except setp 4. I couldn't understnd your mean, so it didn't work. Could you please explain me more? Regad
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12/21/2010 4:07 PM	Rate (0)
BadBit Posts: 125 Rating: (26)	Hi there, hmm, the last post of me was a long time ago... i have typed: "write the external value to internal tag". What i mean is: - create a "internal" faceplate tag, (Edit > Edit faceplate tags) - connect this tag with the io-field and - change with your script only the value of this tag. (not the property of the io-field). I'm sorry, i don't have the possibility to test this proposal. I hope this is what you want to know...
BadBit Posts: 125 Rating: (26)
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