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string to value conversion help

Created by: Ratan at: 5/9/2011 10:07 AM (6 Replies)

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5/9/2011 10:07 AM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 12/30/2025 Posts: 94 Rating: (0)	i have problem regarding using string to value conversion instruction i have attched image for reference Attachment 38oON7Pd.jpg (794 Downloads)

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5/9/2011 6:18 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 1/7/2026 Posts: 16354 Rating: (2522)	P needs to be an UINT with a value of 1. The other block parameters look ok.
	science guy
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5/10/2011 4:10 AM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 12/30/2025 Posts: 94 Rating: (0)	i have tried to move value 1 in P but it is not transfering that value to P

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5/10/2011 3:15 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 1/7/2026 Posts: 16354 Rating: (2522)	Ratan i have tried to move value 1 in P but it is not transfering that value to P You need to put a value of 1 into a tag, like P_TAG1 (%MW50), and then put the P_TAG1 where you want the '1' value to go. It does not allow constants at that input.Pressing F1 when the instruction block is selected brings up the help specific to the module and clearly shows what types of values are allowed. May save some time in the future. I know it has saved me much time.
	science guy
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5/10/2011 8:46 PM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 12/30/2025 Posts: 94 Rating: (0)	thanks you dear huggy for reply my answer, actually the thing you have mentioned in your post i have tried already but value 1 is moving to P, that is what the problem is and also EN is directly connected and the outer boundry of instruction STR_VAL is not chages it colour to green so where i can found my problem i have already assinged P to Usint data type.

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5/11/2011 6:43 PM	Rate (0)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 1/7/2026 Posts: 16354 Rating: (2522)	Ok, I understand the problem. The solution is to add another UINT tagand a MOVE command. See attached. Then you can alter the P tag's value. Attachment S7-1200_STRG_VAL_SETUP.jpg (887 Downloads)
	science guy
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5/17/2011 5:46 AM	Rate (0)
Ratan Experienced Member Joined: 12/7/2010 Last visit: 12/30/2025 Posts: 94 Rating: (0)	thanks Huggy you solved my problem.... this works

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This contribution was helpful to 1 thankful Users 0_Einstein

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