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LOGO! - Projects: Assistance Including Software needed

Hello!
I need help with probably rather simple issue, but I cannot figure it out in Logo!soft Comfort, since I'm pretty amateur.
I will try to explain clearly as possible.
1. There is one input (momentary) and three outputs.
2. After input there is a timer. But timer value may not be the same on every time,when the input is activated. So it can be changed to whatever, when needed.
3. The first output is connected directly to input.
4. Second output is activated, when first output is deactivated and also there is a little time cap between outputs. Lets say one second.
5. Third output is activated, when the second output is deactivated and also there is little time cap between again.
6. Pushing input switch while the cycle is still active needs to be forbidden. So switch can only restart the cycle, when all outputs are completed.
Thanks in advance!

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Answers(1)

Logo!Soft Comfort - Sequential Output Control with Input Inhibition

Here's a solution for your described logic in Logo!Soft Comfort, addressing the sequential outputs, timing, and input inhibition:

Logic Breakdown & Implementation

  1. Input & First Output: Direct connection as you described.
  2. Timer: Utilize a Pulse Timer (TP) for variable timing. The input signal triggers the TP, and the timer's Q output controls the subsequent logic. The timer value should be adjustable via a network input.
  3. Second Output: Use a latch (set/reset) controlled by the NOT of the First Output's signal AND a delay timer (TON) of 1 second. The TON timer is triggered by the First Output going OFF.
  4. Third Output: Similar to the Second Output, use a latch controlled by the NOT of the Second Output's signal AND a TON timer of 1 second.
  5. Input Inhibition: Use an AND gate. Input signal AND the NOT of all three outputs. This ensures the input is only active when all outputs are OFF, effectively restarting the cycle.

Resources & Further Assistance

  • Siemens Industry Online Support: Logo! Soft Comfort FAQs
  • SiePortal: SiePortal (for manuals, downloads and more specific information). Search for "Logo! 8 timing" and "Logo! 8 input inhibition".
  • Example Program: Consider searching the Siemens online forum for similar examples or uploading your current program to the forum for specific feedback.

This solution combines timers, latches, and logical operations within Logo!Soft Comfort to achieve the desired sequential control and safety interlock.

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