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DB values access in Step 7

Created by: bigbang at: 5/5/2009 1:49 PM (3 Replies)

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5/5/2009 1:49 PM	Rate (0)
bigbang Experienced Member Joined: 9/16/2008 Last visit: 9/7/2025 Posts: 56 Rating: (0)	Hi, I'm using a S7 400 system with which I've configured WinCC. I've created sevral DBs in my program. For some of the DBs I can able to select the attribute "Operator Control and Monitoring" under Special Object Properties. However in some DB I can't able to select that. The name of those DBs are within 16 character as required. Can anyone suggest me where is the problem? Is this related to Work Memory or what? Can anyone help me in this regard? If required I can upload the project also.

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5/8/2009 10:59 AM	Rate (0)
candyengineer Posts: 218 Rating: (26)	Hello Rabindra , I hope this thread is related with your problem. Enable OCM Best regards,
candyengineer Posts: 218 Rating: (26)
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5/8/2009 1:10 PM	Rate (0)
bigbang Experienced Member Joined: 9/16/2008 Last visit: 9/7/2025 Posts: 56 Rating: (0)	Hi candyengineer, Thanx for your suggestion. Now I've attached a program with 2 DB. In DB1, it is possible to select the OCM Possible under the special object properties and in the other i.e. in DB100 it is not possible to select that. Can you help me in this regard ? Where is the problem. Attachment Test1.zip (289 Downloads)

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5/11/2009 11:18 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	Hello, unfortunatelly the S7_m_c attribute isn't allowed on the structures in DBs (because of "." in the variablename)so if you remove the structures and leave therejust single variables it should help. Regards Sydney

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