Phase and sequence logic

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This topic contains 2 replies, has 2 voices, and was last updated by Kierie 01 Kieran Murphy 6 months, 2 weeks ago.

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  • #3914
    Kierie 01
    Kieran Murphy
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    Hi all, I have a general question on PLC logic. Just wondering what is the difference between phase and sequence logic when related to PLC programming, thanks in advance,

    #3916
    Mister Incredible
    Mister Incredible
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    Not exactly sure but I’ll give it a go. Typically when in the requirements gathering phase of a project you would like to break the large problem into smaller, more bite size type problems that you can code out. I’m guessing here, but if I had to code a large machine, I may be inclined to break that down into logical blocks or portions (or phases) and then each phase would have its own sequence.

    If you’re referring to a PLC programming type paradigm, or style such as FBD, Ladder or SFC, I’m not familiar with phase or sequence.

    #3917
    Kierie 01
    Kieran Murphy
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    Thanks for the reply, just curious more than anything, I recently did a project involving recipe manager for a factory, they asked me was I using phase or sequence logic. Sequence logic seems relatively self explanatory and your view on phase logic makes sense

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