5/12/2008 3:28 PM | |
Posts: 510 Rating:
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What is the quality code of the value you are looking at? How are you reading the tag value. A Zero value and quality code of 4C (Initial Value) when mousing over the tag in the Tag Management OPC Channel folder would indicate the tag is not being requested by one of the subsystems likealarming, tag logging, global actions or graphics.What does the WinCC Explorer > Tools >Status of Driver Connections indicate for the OPC channel? Are there any errors in the "\\Program Files\Siemens\WinCC\Diagnose" folderOPC log? |
6/11/2008 9:54 PM | |
Posts: 9 Rating:
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Hi Raza! Please test by placing the S7 Tags on I/O fields on a screen, and display the screen. Does the OPC Client now read the tags correctly? Regards, Zee |
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