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I am currently having a problem with displaying values which is desired temperature(Td) and temperature (T)

Created by: ixo65 at: 12/4/2018 3:45 AM (8 Replies)

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12/4/2018 3:45 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	Import of an PM from the User J4cka5 Hi I would like to ask a question about LOGO! controller. I am currently having a problem with displaying values which is desired temperature(Td) and temperature (T) . And also I have to control desired temperature with logo interface up/down arrows. If you know anything that can help me. In attachment part I've add a picture of my diagram but it is not the complete one I've impruved it way more that I can take the temperature from PT100 sensor but both values are increasing and decreasing together. Both threshold triggers are set to PT100 so I also wonder if I should change one of these threshold trigger which is for desired temperature that I can control it by the arrow buttons on LOGO! interface. I wish information I am providing you is enough for you to understand otherwise please just ask me what information you need. King regards.

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This contribution was helpful to 1 thankful Users Jen_Moderator

12/4/2018 3:46 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	There's no attachment in your PM.

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12/4/2018 3:12 PM	Rate (0)
J4cka5 Posts: 3 Rating: (0)	I was adding a picture of LOGO! soft confort diagram as a picture but I don't know why it wasn't added. Attachment Tempcontrol.jpg (260 Downloads)
J4cka5 Posts: 3 Rating: (0)
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12/4/2018 3:26 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	It might be simpler to change the values for the ON and OFF parameters of a threshold trigger via the display in the parameterization mode.

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12/4/2018 3:34 PM	Rate (0)
J4cka5 Posts: 3 Rating: (0)	I've tried it but in both threshold I have this PT100 sensor and also there is a thing when I connect it to the physical model Td and T increases or decreases together and I need to control Td by arrow buttons on the LOGO! interface up/down arrow buttons and I shoudl get this T by the PT100 sensor. So far only thing I get is I am seeing on the screen when I warm PT100 sensor both values are increasing or decreasing together. So I was wondering what if I change one of these thresholds to some other function (if exist) that I could control display value increasing or decreasing by the arrow buttons
J4cka5 Posts: 3 Rating: (0)	Last edited by: J4cka5 at: 12/4/2018 3:43:41 PM
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12/4/2018 3:41 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	I do not know what you mean by "physical model". What value do you want to adjust now exactly with the cursor keys?

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12/4/2018 3:48 PM	Rate (0)
J4cka5 Posts: 3 Rating: (0)	I have two values 1- Desired temperature(Td) 2- Temperature (T) Value from temperature I should get it from PT100 sensor and I have no problem with that and I can succesfully screen it on LOGO! But main problem is as I said desired temperature (Td) has to be controlled by manually with cursor keys on LOGO! interface
J4cka5 Posts: 3 Rating: (0)
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12/4/2018 3:56 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	J4cka5 [snip] But main problem is as I said desired temperature (Td) has to be controlled by manually with cursor keys on LOGO! interface Which value would you like to control? The ON Parameter of the threshold trigger for the Td? The OFF Parameter of the threshold trigger for the Td? Or both? Or other?

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12/4/2018 4:05 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/5/2025 Posts: 35927 Rating: (4497)	Take a look of this website from Siemens. Perhaps there an example for you. https://w3.siemens.com/mcms/programmable-logic-controller/en/logic-module-logo/application-examples/Pages/Default.aspx

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