Help in S7-300 programming

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  Haogy1
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  Automaticien amateur
  
  1 message
  Inscrit le 02/06/2023

  le 02/06/2023 à 08:53 Citer ce message

  Good morning.
  I'm Ismael, and I'm facing an issue with Ladder programming in Tia Portal using an S7 300 PLC.
  
  My program is supposed to heat a product up to 95°C and the maintain that temperature within 30mins before going to the next steps which is to cool down that same liquid within a range of 70 - 80°C.
  My problem is that i created a SCALE function and liked it to my analog pin and later on I used a comparator <95 to activate the steam valve the matter now lies at the level of the temporisation, though i used a TON to trigger the coiling system but it doesn't work as expected and it's getting me kind of nervous.

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