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jan_tem

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Posts posted by jan_tem

  1. Thank you for explanation. I think my last display will not be loaded with this logic because MB 1685 bill be RESET before  my LD LAST element will be active. Will it help if I put my RESET coil in next net? Because it is important that my LD LAST gets active before MB1685 gets RESET.  Will next ladder logic help? (I need to have a direct contact before LD LAST element).1773335466_Zajetaslika2.thumb.PNG.5f10cebb3838dd42bf40b62d5b150201.PNG

  2. Hello,

    I have a question about ladder running sequence (what happens first). To be more specific I posted a picture of ladder program. As you can see i have a MB1685 (direct contact and reset coil). I want to know if my program will be able to LOAD LAST DISPLAY (MB1685 needs to stay ON and SB16 is active), before MB1685 will get  RESET (so OFF).  I wonder what will happen first and if this logic will work (so that it will load my last display). Please if you have an answer reply to me, because I can't test it myself on PLC (I don't have one available).

    Thank you!

    921858534_Visilogicladder.thumb.PNG.99a7dfb559cdf53cb3e21779ca385975.PNG

  3. Hello,

    I am making a machine, where, for safety porpuses I need to PAUSE the program. My machine has a Pressure reducing valve and some solenoid valves. If my pressure sensor senses that pressure is too high (my  Pressure reducing valve doesn't work correctly for example) I just want to pause my program so it doesn't open any solenoid valve and let that high pressure into my machine. So is it possible to pause a program untill pressure is too high? Including pausing Timers so they wouldn't count. Program is written in Visilogic.

    Thank you, Jan

  4. Okey thank you I will try that I need 1 decimal place but it is good to know.

    One more question on this topic. 

    Lets say I want my machine to hold 2,5 bar in sistem. I will need to store that number in my MI. I would like the user to write value - 2,5 (like in real life) with keyboard, and not 25. Are parameters in my 'numeric box' correct?

    Slika2.PNG

  5. Thank you for reply. Well I am using Pressure transmitters 4-20mA on 10-bit (Analog inputs).  First I linearize them (X and Y). My sensor can read from 0-2,5 [bar]. I can't write constant 2,5 in Y2. So that is why i wrote 25 and then I use math function DIV (calculates MI2/10[constant]) and i get for example 2,5 or any other value.

    Or can I display for example 25 as 2,5 in my 'numeric box' on HMI? Never tried that.

    Jan

    Slika.PNG

  6. Hello,

    I am new to this forum. I am making a project where I am measuring pressure values inside 10 water tanks. So I am measuring 10 MF vaules. On the screen I can select a water tank, which pressure I want to view.  After the selection, that takes me to next HMI screen (I would like to keep  only one Display/screen on HMI) where I will view pressure in this tank. I would like it to show me only the pressure in that specific tank that I have selected previously. So on my HMI I would like to insert only one 'Numeric' ''box'' (where I can view MI or MF,...), but only the MF or MI of that tank I have selected. 

    So it would be similar to 'List of texts: by pointer', but with numeric values.

    Is there an answer in vectors maby, or any other way? I would be very happy for an answer.

    Thank you, Jan

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