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Temperature switching

Created by: csrbvba at: 4/12/2020 5:34 PM (7 Replies)

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4/12/2020 5:34 PM	Rate (0)
csrbvba Member Joined: 12/31/2018 Last visit: 10/4/2020 Posts: 5 Rating: (0)	Hey, Logo8 programmed as a thermostat: start 28 ° C stop 26 ° C however, it starts at 28.5 ° C and stops at 26.3 ° C. How come? And is it not possible to give a start at 26.5 ° instead of just round numbers? With thanks Greetings Fernando

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4/12/2020 6:23 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 3/7/2021 Posts: 21591 Rating: (2381)	Too many information.... Which sensor? PT100/1000 with AM2RTD? Or PT100/1000 and external converter? How is the resolution in the LOGO!? Please can you upload your program?

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4/12/2020 8:08 PM	Rate (0)
csrbvba Member Joined: 12/31/2018 Last visit: 10/4/2020 Posts: 5 Rating: (0)	PT1000 - AM2RTD Resolution = 0. If i change to 0,1, results in a incorrect measure. I load the program tommorrow, is in another pc.
	Last edited by: csrbvba at: 04/12/2020 20:08:46
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4/12/2020 8:17 PM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 3/7/2021 Posts: 21591 Rating: (2381)	If you want a decimal place, use scaling in attachment. Attachment PT100_1000 scaling.png (73 Downloads)

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4/13/2020 11:24 AM	Rate (0)
csrbvba Member Joined: 12/31/2018 Last visit: 10/4/2020 Posts: 5 Rating: (0)	Hello, Here is pdf and logo with explanation. Thanks fot your time. Greetings Fernando. Attachment temp 2.lsc.zip (43 Downloads)

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4/13/2020 11:25 AM	Rate (0)
csrbvba Member Joined: 12/31/2018 Last visit: 10/4/2020 Posts: 5 Rating: (0)	pdf with explanation Attachment temp 2.pdf (34 Downloads)

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4/13/2020 11:43 AM	Rate (1)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 3/7/2021 Posts: 21591 Rating: (2381)	With this setting in the analog amplifier you have a resolution of 0.25 ° C. Two decimal places are not possible with this setting. Since the LOGO! only works with integers, is rounded up to 0.3 ° C at 0.25 ° C. Therefore you will always see different jumps in the place after the comma. 0.0> 0.3> 0.5> 0.8> 1.0 etc. Attachment temp 3.zip (48 Downloads)

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4/13/2020 1:08 PM	Rate (0)
csrbvba Member Joined: 12/31/2018 Last visit: 10/4/2020 Posts: 5 Rating: (0)	Big thanks!

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This contribution was helpful to 1 thankful Users ixo65