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MNEMONIQUE

Created by: JEAN_MARIE69 at: 2/11/2012 1:33 PM (8 Replies)

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2/11/2012 1:33 PM	Rate (0)
JEAN_MARIE69 Posts: 7 Rating: (0)	hello,how to assignamnemonictoa variable of aDB examples ACQ_DEF->DB1.DBX2.3 thank you
JEAN_MARIE69 Posts: 7 Rating: (0)
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2/11/2012 2:00 PM	Rate (0)
Ganes10 Platinum Member Joined: 8/31/2010 Last visit: 1/9/2025 Posts: 1523 Rating: (230)	JEAN_MARIE69 hello,how to assignamnemonictoa variable of aDB examples ACQ_DEF->DB1.DBX2.3 You need to assign it for a S7-1200 controller or a S7-300 / S7-400 / ET 200 controller? Ok for all you need to open the DB1 and thenagainst thebyte address 2 and it's bit address 3 you can define the mnemonic
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2/12/2012 3:13 PM	Rate (0)
JEAN_MARIE69 Posts: 7 Rating: (0)	THANK YOUBUTCANYOU GIVE MEA CONCRETE EXAMPLE JM
JEAN_MARIE69 Posts: 7 Rating: (0)
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2/12/2012 9:49 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/15/2025 Posts: 15538 Rating: (2465)	It might help if you provided more information about the existing DB structure. You can use an FC with the AT construct to map differently into or out of your existing structure. For example, if your DB is like this: someDBname : structure; someword : Word; ------ So you want to access a bit within 'someDBname'.someword? Or, is your DB structure like this: someDBname : structure; mybitArray : Array[0..32] of Bool; ---- Now you can access the bit directly. Without knowing what DB structure you are using, no concrete example can be provided and YELLING is not going to get more concrete assistance from those like yourself who are just end users of Siemens products.
	science guy
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2/13/2012 6:33 AM	Rate (0)
Ganes10 Platinum Member Joined: 8/31/2010 Last visit: 1/9/2025 Posts: 1523 Rating: (230)	JEAN_MARIE69 THANK YOUBUTCANYOU GIVE MEA CONCRETE EXAMPLE JM Hello JEAN_MARIE69, Check the enclosed screenshot 1. Create a new Data Block by pressing Add new block 2. This window will be opened 3. Select Data Block in that 4. Choose Global DB in Type 5. Choose Block access as Standard - compatible with S7-300/400 and press OK 6. Open the created Data Block 7. Create variables with the MNEMONIC as shown (if you don't get the offset address, then do compile the block) 8. You can use the MNEMONIC as you wish in any of the program block Hope this suffice Attachment Mnemonic.JPG (549 Downloads)
	Last edited by: Ganes10 at: 2/13/2012 6:33 AM Like it? Rate it!
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2/13/2012 9:44 AM	Rate (0)
wjm1707 Posts: 3 Rating: (0)	thank you for your réponces sorry but my explanation was incomplete I have a variable of type WORD db1.2 and I would like to associate a mnemonic bit more of this example db1.dbx2.3 WORD -> ACQ-def etc. thank you jm
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2/13/2012 10:53 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/15/2025 Posts: 4393 Rating: (1463)	Hi, I think that you would like that this DB bit have a simbol name. The only way to get simbolic names for DB variables, is by the DB declaration itself. It means, that if you define a address as Integer, for example, you has a simbolic name for the word, but the bis will not have simbolic name. However, using SCL and inside a FB, you can give multiple names for the same address (or subparts) with command AT.
	Denilson Pegaia Siemens Industry Sector Technical Support
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2/13/2012 11:19 AM	Rate (0)
Ganes10 Platinum Member Joined: 8/31/2010 Last visit: 1/9/2025 Posts: 1523 Rating: (230)	wjm1707 thank you for your réponces sorry but my explanation was incomplete I have a variable of type WORD db1.2 and I would like to associate a mnemonic bit more of this example db1.dbx2.3 WORD -> ACQ-def etc. thank you jm Hello jm, Type the address as %DB1.DBX2.3 for accessing the as a BOOL from DB1.DBW2 or Check the enclosed screenshot, 1. Click on this icon 2. Select Absolute 3. Create a data of type of WORD 4. Type the specific BOOL address which you need access from the WORD data type But still you will get warning for using the same as "The address in the data block is not occupied by a variable" Attachment Absolute Addressing.JPG (514 Downloads)
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2/13/2012 1:36 PM	Rate (0)
wjm1707 Posts: 3 Rating: (0)	Thank you jm
wjm1707 Posts: 3 Rating: (0)
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