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WinCC as OPC Server - limitation

1/27/2010 11:12 AM	Rate (0)
Jura Experienced Member Joined: 1/17/2007 Last visit: 11/14/2025 Posts: 69 Rating: (0)	Hello to all, I would like to use my WinCC Server also as OPC DA Server. Since there is no need for aditionall licence it is free and OPC server is configured by default. But there are two important problems: 1. How can I restrict connected clients from writting to my tags 2. How can I forbid access to some important (classified) tags, that they will not visible to OPC client Best regards, Jure

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1/28/2010 9:42 PM	Rate (0)
Jura Experienced Member Joined: 1/17/2007 Last visit: 11/14/2025 Posts: 69 Rating: (0)	Is there no clues at all? Where to look - OPC server is Simatic property. Is there any manuals regarding security of data over OPC?

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1/29/2010 7:13 AM	Rate (0)
daga Gold Member Joined: 3/18/2009 Last visit: 12/9/2025 Posts: 306 Rating: (95)	This is the same problem I have faced. The only option we found was to use third party OPC filters and tunnels available fromSofting,Matrikonetc. But then - it's not free.

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