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Char to string convert

Created by: mate1320 at: 4/16/2007 1:21 PM (15 Replies)

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4/16/2007 1:21 PM	Rate (0)
mate1320 Posts: 5 Rating: (0)	Hi, can any one know how I can Form a string from characters that I have in DB the number of chars are variable and the ending character is '<CR>' or a ',' ASCII caracter ? Thank you in advance
mate1320 Posts: 5 Rating: (0)
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4/16/2007 1:29 PM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 11/18/2024 Posts: 8770 Rating: (1171)	Hi, Have you seen this link: http://support.automation.siemens.com/WW/view/en/8532078 Unfortunately you will have to use a AVC card to download the example. Best regards, Wizard

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4/17/2007 7:14 AM	Rate (0)
mate1320 Posts: 5 Rating: (0)	Thank you for help wizard
mate1320 Posts: 5 Rating: (0)
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7/27/2009 3:38 PM	Rate (0)
GeHe001 Posts: 34 Rating: (0)	Hi, it seems this page doesn't excist anymore. I would like to convert a range of Char's is a DB to 1 string to show in WinCC. Is there any standard function to do this, I can't seem to find any. Gr. GeHe
GeHe001 Posts: 34 Rating: (0)
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8/10/2009 3:14 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 9/26/2024 Posts: 703 Rating: (96)	Hello, for showing in WinCC the conversion isn't needed. Declare the range as Raw Data Type with the beginning and the length and read as block. Regards Sydney

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10/3/2013 4:33 PM	Rate (0)
nourbi Posts: 4 Rating: (0)	Hallo everyone, I get eight CHAR into a DB from a transmitter, I want to convert this 8 char to 1 string in other DB en then send it to Wincc flexible. I can't find any block that can convert CHAR to STRING.I m looking just for a program of something that convert from CHAR to string. Can you help me make it goed. Thanks in advance. Nourbi
nourbi Posts: 4 Rating: (0)
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10/4/2013 11:17 AM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	nourbi Hallo everyone, I get eight CHAR into a DB from a transmitter, I want to convert this 8 char to 1 string in other DB en then send it to Wincc flexible. I can't find any block that can convert CHAR to STRING.I m looking just for a program of something that convert from CHAR to string. Can you help me make it goed. Thanks in advance. Nourbi Hello, You can try the following solution.Just make a STRING variable in a DB, then copy the characters to desired cells in the target STRING variable (just skip the 1st two bytes).Check the STEP 7 online manual for more help. Best regards, Hamid Hosseini
	Demo Channel on Youtube
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10/5/2013 4:06 PM	Rate (0)
Madhava Silver Member Joined: 11/26/2011 Last visit: 6/29/2023 Posts: 508 Rating: (23)	Simple method. You can move the set of characters to string. String format, the forst two bytes contains the information related to the string. 1 byte - total length, 2nd byte - no of characters in the string. So just move your characters skipping first two bytes of the string.

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10/8/2013 1:23 AM	Rate (2)
smiffy Platinum Expert Joined: 1/17/2007 Last visit: 10/21/2024 Posts: 1547 Rating: (537)	The following code will produce a block that will do it for you. You connect the DB_PTR input to the DB that contains your characters (note: it must point to the whole DB not to the first or any other characters within the DB). The string will then be outputted on the STR output. Note, it is limited to a maximum string length of 254 characters. Hope it works for you, regards, Smiffy. [code] FUNCTION_BLOCK FB99 TITLE = 'Char to string coversion' AUTHOR : Smiffy VAR_INPUT DB_PTR : ANY; END_VAR VAR_OUTPUT STR : STRING[254]; pSTR AT STR : ARRAY[1..254] OF BYTE; END_VAR VAR_TEMP RetVal : INT; pSRC : ANY; // DB address ANY pointer - used for accessing DB data pAnySRC AT pSRC : STRUCT // Diassembled ANY pointer structure S7Code : BYTE; // Code for S7 (fixed at 16#10) DataType : BYTE; // Code for data type Length : INT; // Repetition factor = Send/receive length DBNumber : INT; // Data block Number MemoryArea : BYTE; // Specified memory area ByteAddressMSB : BYTE; // Byte address most significant bits ByteAddressLSB : WORD; // Byte address least significant bits END_STRUCT; END_VAR pSRC := DB_PTR; pSTR[2] := INT_TO_BYTE(pAnySRC.Length); RetVal := BLKMOV(SRCBLK := pSRC, DSTBLK := STR); END_FUNCTION_BLOCK [/code]
	Last edited by: smiffy at: 10/8/2013 11:43 AM Spelling errors. Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. So far, the universe is winning...
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This contribution was helpful to 3 thankful Users AutoGen_626171 @CIONCO pf_sie

10/30/2013 1:35 PM	Rate (0)
nourbi Posts: 4 Rating: (0)	Thanks everyone, I tried the code of smiffy and it works. @ Madhava: you can't move char to string Thanks a lot. Nourbi
nourbi Posts: 4 Rating: (0)
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This contribution was helpful to 1 thankful Users smiffy

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