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DB1 IS NOT IN THE UPLOAD PROGARM

Created by: NICHOLAS at: 10/9/2014 12:06 PM (2 Replies)

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10/9/2014 12:06 PM	Rate (0)
NICHOLAS Bronze Member Joined: 5/9/2008 Last visit: 5/24/2024 Posts: 20 Rating: (0)	I upload a program from CPU941.There is not DB1 in it.In my opinion DB1 is the necessary part in the upload program. Anyone can help me answer the question?Thanks

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10/10/2014 11:06 AM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 9/25/2024 Posts: 2325 Rating: (308)	Hello NICHOLAS Did you take the Upload yourself ? Can you see the DB1 in PLC Blocks Directory ?. Data Block 1 ( DB1 ) is already integrated in the programmable controller with preset values (default parameters). After performing an overall reset, you can load the default DB1 from the programmable controller into your programmer and display it on the screen. Even if the User may not havedownloaded DB1 to the PLC, the Default DB1 should be present in the CPU ( Unless of course someone has deleted it from CPU Memoryas this is interpreted by the CPU only when it transitions from STOP to RUN). Hope this helps Cheers Navnag
	There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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10/11/2014 4:07 AM	Rate (0)
NICHOLAS Bronze Member Joined: 5/9/2008 Last visit: 5/24/2024 Posts: 20 Rating: (0)	The program is uploaded bymyself,but I haven't check the DBs at that time.There is not any DBs in the program and no DB called in the blocks.There are OBs/PBs/FBs/SBs in the program,so I think I have uploaded it completely(I typed A in the select list of STEP5 transfer window). As you mentioned,maybe someone has deleted DB1. thanks a lot!

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