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FOR loop in Step 7 --- HOW ??

Created by: Gogy at: 1/12/2011 4:59 PM (32 Replies)

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1/13/2011 12:48 AM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Gogy 1.) In my project Arrays INPUT and WEIGHTS, are in same Data Block (DB1). i see, in this symbol table, that is the problem?? 2.) If I, need to take another two arrays, for example , IWEIGHTS and OUTPUT , do I need to make New Data blocks for this two arrayd (DB3 and DB4) ?? It is up to you, see the attachment ,I think possible to have all in one data block.But use symbolic representation as I did.Also for make codes easier to undrestand categorize weights and iweight in a same data block (a suggestion). Hope this helps Attachment final.jpg (612 Downloads)
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1/13/2011 12:56 AM	Rate (0)
Gogy Posts: 40 Rating: (1)	Ok, problem is that in the symbol table, i can't write like this: Symbol Adress Data type ... inputs DB 1 DB 1 weights DB 1 DB 1 ... it is not allowed :( In that video example you have like this: Symbol Adress Data type ... inputs DB 1 DB 1 weights DB 2 DB 2 ... Goran.
Gogy Posts: 40 Rating: (1)
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1/13/2011 1:05 AM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Gogy Ok, problem is that in the symbol table, i can't write like this: Symbol Adress Data type ... inputs DB 1 DB 1 weights DB 1 DB 1 ... it is not allowed :( In that video example you have like this: Symbol Adress Data type ... inputs DB 1 DB 1 weights DB 2 DB 2 ... Goran. try to bring all parameters in DB1 as illustrated in attachment. Array dimension depends on your vectors.See the changes in the SCL code. regards Attachment new_config.zip (587 Downloads)
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1/13/2011 1:22 AM	Rate (0)
Gogy Posts: 40 Rating: (1)	I did what you said... i changed those things, but i have 41 error :( i don't know what am I missing...
Gogy Posts: 40 Rating: (1)
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1/13/2011 1:27 AM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Gogy i changed those things, but i have 41 error :( i don't know what am I missing... [code]FUNCTION FC1 : VOID VAR_TEMP // Temporary Variables END_VAR // Statement Section ; FOR i:=0 TO 2 DO FOR j:=0 TO 2 DO sum := sum + (parameters.input [i] * parameters.weights [j]) ; Y := 2/ (1 + EXP(-2 * SUM) ) -1 ; ; END_FOR; END_FOR; END_FUNCTION[/code] Check the codes again , and all symbols should be identical to mine.Also delete unused DBs. regards
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1/13/2011 1:36 AM	Rate (0)
Gogy Posts: 40 Rating: (1)	Ok, i will try this tomorow. Here is 1:00 AM :) I will create new project, then i will enter hardware information, the i will create DB1, and fill it up, as you. Next, i will create new SCL source, and update system table. As final step i will copy your code, and then we will see, is there going to be errors. I dont know, is this important, but i am using Step 7 v5.3 ... I am going to post my results here. Thank you for your help, so far. Now things are looking little easier. Regards, Goran.
Gogy Posts: 40 Rating: (1)
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This contribution was helpful to 1 thankful Users hdhosseini

1/13/2011 11:27 AM	Rate (0)
Gogy Posts: 40 Rating: (1)	Hello. I did exactly like you did on that video, i still have 41 errors.... But i saw on your fideo that you have block FC1 ??? what is in that block?? Do i need to change something in that block?? Goran. EDIT: ok resolved errors :) EDIT #2: I edited DB with variables i need, i also edited symbol table, and i modified SCL source code for my project. *0 errors, 0 warnings :)* EDIT #3: Can you tell me, what is the next step, after this?? I enetred data into data blocks, (actual values) .. I supose I need to call this function now. In OB1 ?? or somewhere else? What is STL syntax for calling functions?
Gogy Posts: 40 Rating: (1)	Last edited by: Gogy at: 1/13/2011 1:32 PM Last edited by: Gogy at: 1/13/2011 1:07 PM Last edited by: Gogy at: 1/13/2011 12:00 PM
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1/13/2011 4:33 PM	Rate (0)
Aret Posts: 2348 Rating: (264)	Hello! STL: CALL FC1 SCL: FC1();
Aret Posts: 2348 Rating: (264)
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1/13/2011 4:35 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Dear Gogy Happy to hear you are doing well.Yes simply write this code in OB1, it does not have any I/O: [code]call FC1[/code] Monitor value of Y in a variable table.If you are working on Neural Network, you may train the network before and just check the output the trained network with finalized weight matrix.As I am familiar with theory of ANN, you can provide any practical problem to solve.But it is not practical to train the network in SIEMENS PLCs.
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1/13/2011 5:14 PM	Rate (0)
Gogy Posts: 40 Rating: (1)	I am sorry, to report, but it is not working :( I don't know what i did wrong :( I uploaded my project, maybe you can look at it, maybe you will see my mystake.... Attachment Project.zip (534 Downloads)
Gogy Posts: 40 Rating: (1)
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