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SDB download problems for S7-400

3/7/2012 4:00 PM	Rate (0)
khorkhordin Posts: 10 Rating: (0)	Hi all, I ran into wierd problem with a project written in Step7 v5.4 for S7-414H. At some point complete project download to CPU started to fail with error message: (D20D) SDB cannot be interpreted (for example, unknown number) What is the possible remedy? Any ideas are appreciated.
khorkhordin Posts: 10 Rating: (0)
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3/10/2012 5:37 AM	Rate (0)
khorkhordin Posts: 10 Rating: (0)	The message also says 'Cannot load SDB 305'. Any ideas, folks? Attachment SDB error.jpg (493 Downloads)
khorkhordin Posts: 10 Rating: (0)
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3/11/2012 8:08 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	Hello, Is this a new project or an old one in which you are trying to make some changes? SDB305 is related to Configuring symbol-related messages. Check Configuring chronological messaging or http://support.automation.siemens.com/WW/view/en/22979182 Best regards, Hristo Mihalev

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This contribution was helpful to 1 thankful Users khorkhordin

3/11/2012 5:02 PM	Rate (0)
khorkhordin Posts: 10 Rating: (0)	Hristo, Thank you for the reply. The project is new, and the idea of SDB problem originating from message generation looks promising. I will try that direction... Yuriy
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3/11/2012 7:45 PM	Rate (0)
Late Platinum Member Joined: 1/7/2006 Last visit: 5/11/2025 Posts: 2705 Rating: (321)	Hi, You could see it directly in the symbolic, if you place the colums for communication also in the view. Normally these messages are coming from PDIAG or S7-Graph where ALARM_S messages are programmed. If no ALARM_S messages are used then delete the SDB-bag from the block-container and compile the hardware new, then look if the SDB305 is coming back, if not then compile Netpro and look again.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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This contribution was helpful to 1 thankful Users khorkhordin

3/13/2012 11:27 AM	Rate (0)
khorkhordin Posts: 10 Rating: (0)	Thank you guys again. In my Symbol table I had an input generating a message (I was experimenting earlier). Once I removed the message and re-genereated SDBs, the problem disappeared! Case isclosed!
khorkhordin Posts: 10 Rating: (0)
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This contribution was helpful to 1 thankful Users umencho

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