Ayoub Posted August 20, 2018 Report Share Posted August 20, 2018 Hello,I work with the SM-J-T20 PLC, and I measure with an electronic card the voltage on an analog input (0-10V) of my PLC. the problem is there are a parasites which causes a quick variation of the value read by the PLC, I already tried to solve this problem by the analog filter, but nothing has changed. Can you helps me please ? Thank you in advance. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted August 20, 2018 MVP 2021 Report Share Posted August 20, 2018 There is additional filtration available via ladder. Look under the FB's drop-down menu. 1 Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted August 21, 2018 MVP 2021 Report Share Posted August 21, 2018 If it is really bad I've been known to hang an electrolytic capacitor between the analog input and 0V. I'm not kidding. Something like 10 uF @ 25V. Joe T. 4 Quote Link to comment Share on other sites More sharing options...
Ayoub Posted August 21, 2018 Author Report Share Posted August 21, 2018 thank you for your answers, I uesed the filtration via ladder, and it worked Quote Link to comment Share on other sites More sharing options...
viscoelastic Posted August 24, 2018 Report Share Posted August 24, 2018 On 8/20/2018 at 11:35 PM, Joe Tauser said: If it is really bad I've been known to hang an electrolytic capacitor between the analog input and 0V. I'm not kidding. Something like 10 uF @ 25V. Joe T. Seriously, Try what Joe said. I was taught that by someone else. It can save you hours of pulling out your hair. Quote Link to comment Share on other sites More sharing options...
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