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UNSCALING S7 1200

Created by: AutoGen_4682187 at: 1/21/2025 8:38 AM (11 Replies)

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1/21/2025 8:38 AM	Rate (0)
AutoGen_4682187 Joined: 1/21/2025 Last visit: 1/28/2025 Posts: 5 Rating: (0)	Hi, i have a problem with the unscaling process in tiaportal v16, i'm using a plc s7 1200 so there isn't an unscaling block (FC106). I start by putting a scale_x block and then using a norm_x but it doesn't work, could someone pleas help me? thank you guys. Attachment image.png (154 Downloads)

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1/21/2025 8:52 AM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 9/12/2025 Posts: 5116 Rating: (768)	From the presented LAD network your intention is hard to be guessed. Could you describe in plain words what you plan to do? I.e. what is given at the beginning and what result is expected.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/21/2025 8:54 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 8/29/2025 Posts: 4443 Rating: (641)	Hi, I think this will not work - try to use MW10 (if free or any other Merker or a variable in a data block) instead of %IW60. Regards, Towome EDIT: For an S7-1200/S7-1500 controller in STEP 7 (TIA Portal), how do you scale integer values in real numbers and vice versa for analog inputs and outputs?
	Last edited by: Towome at: 01/21/2025 08:56:32 If my post was useful, please rate me - if not, please tell me - thank you!
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1/21/2025 1:34 PM	Rate (0)
AutoGen_4682187 Joined: 1/21/2025 Last visit: 1/28/2025 Posts: 5 Rating: (0)	The data sent by the input signal “in” is examined, the MIN and MAX values are chosen by us, in this case we choose 0.0 and 10.0 respectively, we put .0 because they are REAL values and not INTEGER. After the SCALE_X block has transformed the received values into integers, the output is passed to a NORM_X block which is used to normalize the value. ES. We have 5.4 as an input, then this value is scaled to a value between 0 and 1, so 0.54. Then this value is multiplied by the maximum value for normalization, 0.54 * 27648 = 14929. This number will be our final output value.
	Last edited by: AutoGen_4682187 at: 01/21/2025 13:37:59
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1/21/2025 2:39 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 9/12/2025 Posts: 5116 Rating: (768)	You network should look more or less as follows. But I may be well wrong. Attachment Example.png (142 Downloads)
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/21/2025 2:43 PM	Rate (0)
AutoGen_4682187 Joined: 1/21/2025 Last visit: 1/28/2025 Posts: 5 Rating: (0)	I Talk about the unscaling not scaling....
	Last edited by: AutoGen_4682187 at: 01/21/2025 14:44:03
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1/21/2025 3:01 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 9/12/2025 Posts: 5116 Rating: (768)	The posted example shows how to process a variable of REAL data type to a variable of INT data type suitable for an analog output. Indeed, some call this processing unscaling. However conceptually it is not different than taking an analog input and processing it into some meaningful value, which they call scaling.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/21/2025 6:49 PM	Rate (0)
AutoGen_4682187 Joined: 1/21/2025 Last visit: 1/28/2025 Posts: 5 Rating: (0)	quindi mi stai dicendo che unscaling e scaling sono uguali? se no non ho capito

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1/21/2025 7:15 PM	Rate (0)
Moderator_Lan Moderator Joined: 7/30/2024 Last visit: 9/12/2025 Posts: 948 Rating: (16)	AutoGen_4682187, Please try to discuss your question in English language. This is an international community and we try to focus on one language. Posting in English will help to generate more replies to your question. This is the translation of your post (via google translate): AutoGen_4682187 so you're telling me that unscaling and scaling are the same? otherwise I don't understand Kind regards, Moderator_Lan

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1/21/2025 8:49 PM	Rate (0)
AutoGen_4682187 Joined: 1/21/2025 Last visit: 1/28/2025 Posts: 5 Rating: (0)	OK sorry

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