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PT100 temperature sensor values to LOGO Web server/cloud using LWE

Created by: sampsa79 at: 12/12/2020 2:45 PM (9 Replies)

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12/12/2020 2:45 PM	Rate (0)
sampsa79 Posts: 4 Rating: (0)	Hello, How to get -50 to +50 celsius temperatures to Web server site/cloud by using PT100 temperature sensor? Logo display shows celsius temperatures correctly but the cloud servers displays shows only 0-1000. Is it possible to fix this so that the cloud display shows celsius too? If anyone would have tips for Logo Web server/cloud ***ie... :)
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12/12/2020 2:49 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	In which way read the value of the PT100? With a AM2 RTD module? Or with an external transmitter? If an external transmitter, with temperature range has the output? What ist the physical output of the transmitter? 0-10V or 0/4-20mA?

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12/12/2020 4:32 PM	Rate (0)
sampsa79 Posts: 4 Rating: (0)	I use AM2 RTD module and trying to make the website what shows the celsius values. Easy instructions how to make this if it's possible?
sampsa79 Posts: 4 Rating: (0)
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12/12/2020 4:37 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	You must know, the range of a AM2 RTD is -50 °C to 200 °C. You can not change this resolution. With an analog amplifier you can scale this range. Do you want a example?

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12/12/2020 8:24 PM	Rate (0)
sampsa79 Posts: 4 Rating: (0)	From -50 to 200 is fine. I just want to see/show in the web what is the outside temperature in celsius scale. Now it only shows 0-1000 scale. What I need to do so that the scale is celsius in the web? What I need to do in Logo soft comfort so that lwe software can use the data?
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12/12/2020 8:25 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	Did you read my post? I ask you something and became not all answers.

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12/12/2020 11:25 PM	Rate (0)
Scorp Platinum Member Joined: 2/22/2008 Last visit: 11/30/2023 Posts: 2698 Rating: (203)	If the Logo displays shows the right value, then you have an analog amplifier presetted with PT100 mode. For the cloud server you have used the AIx analog input ? That's wrong, you need a VM mapping of the Aq of analog amplifier, e.g. VW0 if free. Then use VW0 in LWE as signed integer to get the temperature in °C. If you are not firm with VM mapping, then see online help or examples on Siemens web page. You also can use an analog flag e.g. AM1 after the analog amplifier, if analog flags in LWE are selectable. Regards, Scorp

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12/13/2020 5:54 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 12/3/2023 Posts: 31538 Rating: (3919)	In attachment a simple example, LWE and LSC. Attachment Temperature PT100.zip (221 Downloads)

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This contribution was helpful to 1 thankful Users mindware

12/13/2020 4:26 PM	Rate (0)
sampsa79 Posts: 4 Rating: (0)	Thank you for advice and example. Got this working. :) Thanks a lot.
sampsa79 Posts: 4 Rating: (0)
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This contribution was helpful to 1 thankful Users ixo65

10/23/2023 10:21 AM	Rate (0)
Jen_Moderator Moderator Joined: 6/19/2017 Last visit: 12/1/2023 Posts: 7573 Rating: (154)	New question published by AutoGen_5455013 is split to a separate thread with the subject Which ports should i connect two wires of + and - to measure Mili Voltson?. Best regards Jen_Moderator
	My Forum is the place to personalize your profile, track your topics, and maintain content that interests you. Best regards Jen_Moderator
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