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Move DB data in SCL

Created by: cabrca at: 10/5/2011 10:47 AM (5 Replies)

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10/5/2011 10:47 AM	Rate (0)
cabrca Posts: 22 Rating: (0)	Hi all, In PCS7 project I need to move indexed db data from one to other, but with different lenght.... For example I will need to define a start address like db10.dbx2.5 and a bit lenght like 30 (...so it will last 'till db10.dbx6.2) to a destination address like db20.dbw4 with the same lenght. What I would like to have on my scl code is as Input parameters the "dbnn.dbxn.n" and "bit lenght" and the destination "dbnn.dbwnn" as output. Anyone can give me a clue how to make it... or maybe someone have a code that makes it ?? Best regards,
cabrca Posts: 22 Rating: (0)
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10/5/2011 12:40 PM	Rate (0)
yy1 Gold Member Joined: 3/24/2009 Last visit: 7/9/2024 Posts: 535 Rating: (112)	Dear cabrca, I think, that you are looking for the BLKMOV-SFC20, aren't you? DB20.DBW4 may be data-type INT/WORD (or array/struct/...), but in the parameter you have to write DBX4.0 [code] #ret:=BLKMOV(SRCBLK:=P# DB 10.DBX 2.5 BOOL 30, DSTBLK=>P# DB 20.DBX 4.0 BOOL 30); [/code] If the ANY pointer (source or destination) is of the type BOOL, the specified length must be divisible by 8 otherwise copying is not possible. Best regards, yy1
	Last edited by: yy1 at: 10/5/2011 12:48 PM Last edited by: yy1 at: 10/5/2011 12:42 PM
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This contribution was helpful to 1 thankful Users cabrca

10/5/2011 2:44 PM	Rate (0)
Aret Posts: 2348 Rating: (265)	yy1, you are right but for STL only. Best way to do it in SCL - feed defined variables as source and destination - you can use arrays and structs and combination of them. So the trick here is to make DB of proper structure - to make copying easy. If this method doesn't fit or you want to define pointers in PLC during work you have to use method of filling ANY parameters. listed in http://support.automation.siemens.com/WW/view/en/21946854
Aret Posts: 2348 Rating: (265)	Last edited by: Aret at: 10/5/2011 2:45 PM
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This contribution was helpful to 3 thankful Users Phantom75 yy1 cabrca

10/6/2011 3:45 PM	Rate (0)
cabrca Posts: 22 Rating: (0)	Tanks you both for your answers. I will try and inform you. Best regerds,
cabrca Posts: 22 Rating: (0)
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10/11/2011 12:49 PM	Rate (0)
cabrca Posts: 22 Rating: (0)	Aret yy1, you are right but for STL only. Best way to do it in SCL - feed defined variables as source and destination - you can use arrays and structs and combination of them. So the trick here is to make DB of proper structure - to make copying easy. If this method doesn't fit or you want to define pointers in PLC during work you have to use method of filling ANY parameters. listed in http://support.automation.siemens.com/WW/view/en/21946854 Hi, Tested the link on a PCS7 project and the code does not works ??!!. On the declaration variables: pAny_source AT Test1: ANY; pAny_source AT Test2: ANY; ...I get the following error on complitation: "Declaration of a call instance or parameter data type used in this declaration field not permitted" The code i've used is as follow: [code]FUNCTION_Block FB598 TITLE = 'Test' VERSION : '1.1' AUTHOR : me NAME : 'Test' FAMILY : Comp VAR Test1: STRUCT //ANY Struktur 1 anlegen ANY_id: BYTE; //Define ANY structure 1 Source_DataType: BYTE; Source_Lenght: WORD; Source_DB_Nummer: WORD; Source_Byte_Pointer: DWORD; END_STRUCT; Test2: STRUCT //ANY Struktur 2 anlegen ANY_id: BYTE; //Define ANY structure 2 Destin_DataType: BYTE; Destin_Lenght: WORD; Destin_DB_Nummer: WORD; Destin_Byte_Pointer: DWORD; END_STRUCT; //Deklaration ANY Pointer für Quell-DB //Declaring ANY pointer of source DB pAny_source AT Test1: ANY; //Deklaration ANY Pointer für Ziel-DB //Declaring ANY pointer of target DB pAny_destin AT Test2: ANY; erg: INT; //Rückgabewert / Return value END_VAR BEGIN Test1.ANY_id:= 16#10; //Vorbelegen der Quell-ANY-Pointer Variablen Test1.Source_DataType:= 16#2; //Assign values for source pointer Test1.Source_Lenght:= 16#0a; Test1.Source_DB_Nummer:= 16#06; Test1.Source_Byte_Pointer:= dw#16#84000000; Test2.ANY_id:= 16#10; //Vorbelegen der Ziel-ANY-Pointer Variablen Test2.Destin_DataType:= 16#2; //Assign values for destination pointer Test2.Destin_Lenght:= 16#0a; Test2.Destin_DB_Nummer:= 16#07; Test2.Destin_Byte_Pointer:= dw#16#84000000; //Aufruf SFC20 und Parametrierung der ANY-Pointer-Variablen //Calling SFC20 and programming of ANY pointer variables erg:= SFC20(srcblk:= pAny_source, dstblk:= pAny_destin); END_FUNCTION_BLOCK [/code]
cabrca Posts: 22 Rating: (0)	Last edited by: cabrca at: 10/11/2011 12:52 PM Last edited by: cabrca at: 10/11/2011 12:50 PM
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10/11/2011 1:56 PM	Rate (0)
Aret Posts: 2348 Rating: (265)	Just place them in temp areaYou move in the right direction
Aret Posts: 2348 Rating: (265)
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