4 posts in this topic

Hi All

I am struggling to get a TON in TIA v15 to work properly (s7_1212). I have tried reading what i can but still dont understand why what i have is not working. 

I have attached a screen shot.

I am trying to achieve a bit that is active for 1 scan cycle and resets every second. Coil1 is just staying active however and not resetting the timer. 

What i have written works in Connected Components Workbench and other plc software i have used. What am i doing wrong?
Thank you in advance.

Trevor

 

Screenshot (1).png

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Do not use "Local Data" use "Global Memory instead" - ie use %M1.0

Edited by Moggie

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Siemens do have built in memory bits that allow you to do just what you are wanting. Called clock bits.

 

 

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