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RTD INPUT SCALING?

Created by: mobeen at: 2/7/2013 11:58 AM (14 Replies)

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2/7/2013 11:58 AM	Rate (1)
mobeen Posts: 9 Rating: (1)	Dear experts, I am using SM331 AIxTC/4xRTD (6ES7 331-7SF00-0AB0) module, to which PT-100 is connected. I need to know if any scaling is required in programing to get the temperature or this module gives the original temperature? Also please let me know how to get the temperature wether with scaling or without scaling in PLC. Looking forward for your kind reply.
mobeen Posts: 9 Rating: (1)
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2/7/2013 12:01 PM	Rate (2)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (708)	Hello, The temperature is in 1/10 of a degree, 25,5 degree is shown as 225, so to get the temperature you need to convert to Real and then devide by 10.0 Regards, Marcjan
	Last edited by: Marcjan at: 2/7/2013 12:56 PM Last edited by: Marcjan at: 2/7/2013 12:02 PM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 3 thankful Users mobeen Rebz Mohammad Razmjoo

2/7/2013 12:07 PM	Rate (0)
mobeen Posts: 9 Rating: (1)	Dear Marcjan, Thanks for your kind reply. Please, if you can let me know, how shall i convert the raw value to real value? Thanking in anticipation
mobeen Posts: 9 Rating: (1)
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2/7/2013 1:02 PM	Rate (2)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (708)	Hello, See attachment. Regards, Marcjan Attachment temp-to-real.JPG (2067 Downloads)
	Last edited by: Marcjan at: 2/7/2013 1:03 PM forgot attachment ;-( Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 3 thankful Users mobeen Rebz Mohammad Razmjoo

2/7/2013 1:07 PM	Rate (0)
mobeen Posts: 9 Rating: (1)	Dear Marcjan, Thanks alot for the help. Best regards Mobeen
mobeen Posts: 9 Rating: (1)
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11/13/2014 7:28 PM	Rate (0)
Sidd94 Posts: 12 Rating: (0)	I want to do the same thing in TIA PORTAL . Can you tell me how should I do this?
Sidd94 Posts: 12 Rating: (0)
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11/13/2014 9:36 PM	Rate (0)
Ton Verra Gold Member Joined: 4/20/2007 Last visit: 8/30/2023 Posts: 724 Rating: (40)	Exactly the same way: -see attachment- Attachment int_dint_real.zip (723 Downloads)
	Last edited by: Min_Moderator at: 11/14/2014 11:37 AM Move picture to attachment
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This contribution was helpful to 1 thankful Users Rebz

2/10/2015 7:55 PM	Rate (0)
Rebz Regular Member Joined: 11/21/2012 Last visit: 4/12/2023 Posts: 3 Rating: (0)	thank you very much Marcjan and Ton Verra for this, it help me a lot. I get it by dividing the real number by 100, not by 10, i don't know exactly why its 100, maybe upon the hardware configuration, or the RTD i'm using, but it work. I confirmed it using fluke IR thermometer. Attachment RTD reading.jpg (1152 Downloads)
	Last edited by: Rebz at: 2/10/2015 7:57:55 PM Last edited by: Rebz at: 2/10/2015 7:59:05 PM
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2/16/2015 8:46 PM	Rate (0)
Ayman Elotaify Platinum Expert Joined: 5/28/2008 Last visit: 9/30/2023 Posts: 4477 Rating: (830)	Rebz thank you very much Marcjan and Ton Verra for this, it help me a lot. I get it by dividing the real number by 100, not by 10, i don't know exactly why its 100, maybe upon the hardware configuration, or the RTD i'm using, but it work. I confirmed it using fluke IR thermometer. Please tell us part number of your module.
	Ayman Elotaify
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2/18/2015 10:16 AM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (708)	Hello, It could be that you have a Climatic RTD and/ or selected climatic on your card. Then 1 digit= 0.01 °C. To know for sure please mention the card and RTD partnumbers. Regards, Marcjan .
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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