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Create an array as internal tag

Created by: hernan_e at: 9/26/2008 4:41 PM (6 Replies)

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9/26/2008 4:41 PM	Rate (0)
hernan_e Posts: 53 Rating: (2)	Hello, I need to read a CSV file and store values in some kind of variable I think an internal array could be the right choice because data will be stored only on the PC (and not in PLC) and processed via script, even better could be an structure where I could put names for fields and then make an array of that structure, but I settle with an array tag! I don't know how to create those kinds of variables with WinCCExplorer (and I don't even know if it is possible) So I will apreciate any help on how to create the arrays or any other solution for this Thanks you
hernan_e Posts: 53 Rating: (2)
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9/26/2008 5:14 PM	Rate (0)
DeepakD Bronze Member Joined: 11/30/2006 Last visit: 6/7/2024 Posts: 118 Rating: (11)	I think you should try using Structure Tags . Since Structure Tags are same like Arrays with different Elements . First you need to define Structure . Then you can create the Structure tags by selecting the Data Type as Structure . Check this manual for Creating Structure Tag . http://support.automation.siemens.com/WW/view/en/15342782 http://support.automation.siemens.com/WW/view/en/22533646

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9/26/2008 5:16 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	Check thesethree features in WinCC information system. StructureTag Raw Data Tag: This can be used as an array, See the sample code for reading Raw data tag. { #define DATA_SIZE 10 BYTE byData[DATA_SIZE]; //Get the current values of the tag GetTagRaw("gs_tag_raw",byData,DATA_SIZE); //Use the values received in the array byData ... } Global C Tag: This is using variables decalred in C script used through out the project without any tags. Some link with info http://support.automation.siemens.com/WW/view/en/71096
JMJ Posts: 487 Rating: (45)	Last edited by: JMJ at: 9/26/2008 5:21 PM Last edited by: JMJ at: 9/26/2008 5:21 PM
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10/30/2008 2:38 PM	Rate (0)
hernan_e Posts: 53 Rating: (2)	Thank you DeepakD, and JMJ for the answers, I am back to work on this Returning to the subject >I think you should try using Structure Tags . >Since Structure Tags are same like Arrays with different Elements . There is an important difference for my needs, to declare many data with an array is just to write a number and to access is just another number, if I create Structure Tags and I cant make a real array with it, it would have different names and would be hard to manage example of a simple array in C [code] int datos[100]; datos[2]=23; [/code] and if it were a structure like in C, lets say "arrayable", for example [code] typedef struct { unsigned int index; char name[150]; unsigned int number[20]; } data_st; data_st datos[100];[/code] That would be great and is exactly what I need, but the problem is that C data isn't selectable to work in Graphic Editor, I mean I would like something like that but in WINCC TAG format, and by now I think it isn't possible... >1. Structure Tag >2. Raw Data Tag: This can be used as an array, See the sample code for reading Raw data tag. > > { > #define DATA_SIZE 10 > BYTE byData[DATA_SIZE]; > //Get the current values of the tag > GetTagRaw("gs_tag_raw",byData,DATA_SIZE); > //Use the values received in the array byData > ... > } This solution is just one type of data, byte, if could be used (by adding a (weird) managmnent function of various raw byte arrays to reach a data structure 'simulation') I hope I can avoid that, anyway the data couldn't be simple accesible through graphic objects. > 3. Global C Tag: This is using variables decalred in C script used through out the project without > any tags. This is the solution I am implementing( as the example structure above) but now I have problems to use this data with graphics designer, I mean, every data browser on editor lets select Wincc tags, but no global C data... The actual TODO progress is 1-read CSV (already Done! by C routine) 2-Parse into vars (already Done! into C global structure like example above by C routine) 3-Process data (already Done! by C routine) ----------------------------------------------------------------------------------------------------- 4-Use/show in graphic table on runtime (TO DO, and dont know how to access C global data structure array...) ----------------------------------------------------------------------------------------------------- 5-parse -> CSV (Done! by C routine) I hope my explanation(and english) have been clear, Any advise will be well received Thanks again!
hernan_e Posts: 53 Rating: (2)
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1/2/2009 2:08 PM	Rate (0)
hernan_e Posts: 53 Rating: (2)	Solved 4-Use/show in graphic table on runtime [First]: Using SetTag / GetTag functions!, (as recomended by JMJ ) ------------------------------------------------------------------------------------------------- I didn't knew those functions, they are useful! but not a transparent solution when dealing with another data type than byte, the convertion must be done manual... [Second]: to watch data in runtime graphic I use ListBox -------------------------------------------------------------------------------- thanks
hernan_e Posts: 53 Rating: (2)	Last edited by: hernan_e at: 1/2/2009 2:12 PM Last edited by: hernan_e at: 1/2/2009 2:11 PM
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1/3/2009 6:12 PM	Rate (0)
uel123 Gold Member Joined: 1/29/2006 Last visit: 1/8/2025 Posts: 447 Rating: (65)	I would rather use VBS and some ActiveX control (ListViewCtrl f.e.); it would be much easier, if you are familiar with VBS! Have fun! uel123
	Last edited by: uel123 at: 1/3/2009 6:13 PM
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This contribution was helpful to 1 thankful Users hernan_e

1/5/2009 12:53 PM	Rate (0)
hernan_e Posts: 53 Rating: (2)	It seems listView is better, I've found an example at www.wincc.net faq, http://domain945847.sites.fasthosts.com/faqs/listviewcontrol.asp thanks!
hernan_e Posts: 53 Rating: (2)
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This contribution was helpful to 1 thankful Users Sardar Balwant Singh

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