PLC ladder countdown timer programing help

Discussion in 'Automation & Control' started by Sorin Petrescu, May 11, 2019.

  1. Sorin Petrescu

    Thread Starter New Member

    May 11, 2019
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    Hello everyone
    I'm trying to make a countdown timer (minutes and seconds) in ladder language (no structured program), try this on GX Development Mitsubishi. Can someone help me ?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    A little vague as to what you are trying to do, an event to occur after so many minutes?
    Does it matter count up or count down?
    Max.
     
  3. Sorin Petrescu

    Thread Starter New Member

    May 11, 2019
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    it is not vague, it's my job what measure and yes it should be the countdown.
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Why the double membership?
    Max.
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
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    AFAIK there is just the usual pre-loaded time elapsed timer in the Mits PLC .
    Max.
     
  6. panic mode

    Senior Member

    Oct 10, 2011
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    If just needed an interval, it is simplest to calculate timer preset from required values for minutes and seconds.
    But if the goal is to display countdown values for minutes and second on some HMI, either more math is needed or something like this MS_Timer.png
     
    Sorin Petrescu likes this.
  7. Sorin Petrescu

    Thread Starter New Member

    May 11, 2019
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    Yes you have right, i must put on the some LCD display.
    I did one similar , but with DEC not with SUB.
    After ai finish , i wil post to tell me your opinion
    Thank you very much
     
  8. ericgibbs

    Moderator

    Jan 29, 2010
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    Moderation:
    Please decide which account and username you wish to keep.
    ie: Sorin Petrescu or Petrescu Sorin
    We will Close the other user name, only one username is permitted.
    E
     
  9. Sorin Petrescu

    Thread Starter New Member

    May 11, 2019
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    15/5000


    how it seems to you
     
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