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data block symbols not coming while program uploading from PLC

Created by: arumugashankar at: 10/3/2012 8:34 AM (8 Replies)

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10/3/2012 8:34 AM	Rate (0)
arumugashankar Posts: 10 Rating: (0)	hello everyone. I am facing a problem when I upload a program from plc to system using simatic software. I could not find any symbols in the new program. However i can copy symbol file from old back up , but i dont know how to get the symbol description of data block (eg. db 126. dbx1.1). Pls clarify me.
arumugashankar Posts: 10 Rating: (0)
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10/3/2012 8:39 AM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 12/9/2025 Posts: 2957 Rating: (243)	Hi, Symbols are not stored in the PLC. If you upload program from PLC and do not have original project with symbols then you will not be able to see symbols representation. You can see only address.
	Best regards, Darius
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This contribution was helpful to 1 thankful Users mS_moni

10/3/2012 8:53 AM	Rate (1)
playerslight Posts: 1064 Rating: (72)	arumugashankar hello everyone. I am facing a problem when I upload a program from plc to system using simatic software. I could not find any symbols in the new program. However i can copy symbol file from old back up , but i dont know how to get the symbol description of data block (eg. db 126. dbx1.1). Pls clarify me. If you have an old back just do a compare and upload the differences that way you won't lose your data block symbols or your symbol table unless the data blocks have changed
playerslight Posts: 1064 Rating: (72)
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10/3/2012 9:00 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	Hello, Useful FAQ (unfortunately for future use) -How can you also store other files that belong to the project or plant on the MC/MMC? best regards, Hristo Mihalev

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10/3/2012 9:04 AM	Rate (0)
Darius Platinum Member Joined: 9/28/2005 Last visit: 12/9/2025 Posts: 2957 Rating: (243)	UMENCHO Hello, Useful FAQ (unfortunately for future use) -How can you also store other files that belong to the project or plant on the MC/MMC? best regards, Hristo Mihalev This is good idea if you don't care about security issues . When you store project files on MMC you can be sure that anyone can have your full project with symbols
	Best regards, Darius
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10/3/2012 6:03 PM	Rate (0)
daad Gold Member Joined: 10/31/2011 Last visit: 4/8/2025 Posts: 400 Rating: (5)	Dear arumugashanker, If after copying sysmbol table in uploaded program you have no symbol of specific range of data then it shows that you have not Least updated backup and these data blocks are uploaded after you backup copy of project.

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10/3/2012 7:59 PM	Rate (0)
arumugashankar Posts: 10 Rating: (0)	mr.shoib, In my case, symbol table consists of only input and output address and not data block parameter descriptions. Those data block parameters descriptions are given in data block only. When uploaded from plc i could nt find the descriptions in data block
arumugashankar Posts: 10 Rating: (0)
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10/3/2012 9:34 PM	Rate (0)
daad Gold Member Joined: 10/31/2011 Last visit: 4/8/2025 Posts: 400 Rating: (5)	I think you are viewing data block in data view(in file manu) so it will not shows you the symbols.when you change view from data view to delaration view the symbols are again shown as in backup program.

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8/25/2014 11:56 AM	Rate (0)
mechatronicetc@gm... Advanced Member Joined: 5/31/2013 Last visit: 5/6/2025 Posts: 1 Rating: (0)	Open original project and drag to online PLC, copy all FC and DB from online PLC then paste to offline project.
	Last edited by: mechatronicetc@gmail.com at: 8/25/2014 11:57 AM
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