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Instructions string conversion

Created by: automatizzando at: 7/30/2010 8:56 AM (5 Replies)

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7/30/2010 8:56 AM	Rate (0)
automatizzando Bronze Member Joined: 3/11/2007 Last visit: 10/21/2024 Posts: 226 Rating: (13)	You can have an example of how to use STRG_VAL VAL_STRG I am not very familiar with string. Thanks

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7/30/2010 9:50 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 11/1/2024 Posts: 10229 Rating: (1181)	Hello, Have you looked in SIMATIC S7 S7-1200 Programmable controller manual? There have examples depend of input values what you will receive in output. I think this will be enough to understand the logic. Best regards, Hristo Mihalev

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7/30/2010 10:50 AM	Rate (0)
automatizzando Bronze Member Joined: 3/11/2007 Last visit: 10/21/2024 Posts: 226 Rating: (13)	Hello, I had already seen the manual but I did not understand how to use instructions. Could you give me an example or explain how they work? I did not understand: STRG_VAL: FORMAT? P? VAL_STRG SIZE? PREC? Thanks

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7/30/2010 11:56 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 11/1/2024 Posts: 10229 Rating: (1181)	STRG_VAL: FORMAT - Output format options. For example if you set 16#0001 output value will be with fixed point. Input string - "123", out will be 12.3. P - Character Offset from which start converting (P=1 means Index to the first character to be converted ). VAL_STRG SIZE - Number of characters to be written to the OUT string. If you put 5, then in result (OUT) will be 5 places like XXXXX. And if you have in IN - 234, result will be XX234. PREC - Parameter PREC specifies the precision or number of digits for the fractional part of the string. If the parameter IN value is an integer, then PREC specifies the location of the decimal point. For example, if the data value is 123 and PREC = 1, then the result is "12.3". The maximum supported precision for the REAL data type is 7 digits. I suggest you also to play online a little bit more with both functions. There (online) the things are clearer... Best regards, Hristo Mihalev

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7/30/2010 7:41 PM	Rate (0)
automatizzando Bronze Member Joined: 3/11/2007 Last visit: 10/21/2024 Posts: 226 Rating: (13)	STRG_VAL P - Character Offset from which start converting (P=1 means Index to the first character to be converted ). Because if "P" insert 1, it gives me error? Error: Constant not permitted
	Last edited by: automatizzando at: 7/30/2010 7:42 PM Last edited by: automatizzando at: 7/30/2010 7:41 PM
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9/11/2010 10:46 PM	Rate (0)
EmirC Posts: 1 Rating: (0)	Hello, fast and simple solution is in attachment below. BR EmirC Attachment STRG_VAL.pdf (1172 Downloads)
EmirC Posts: 1 Rating: (0)
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