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Found 6 results

  1. Hi, I have JZ20-J-T18 Jazz PLC, and U90 Ladder. I have 2 Analog Inputs that needs to be scaled. I have found a way to scale one of them, using SI 80-85 and my Analog Input (4-20 mA). Now i need to scale second one, but there is no SI for 2 or more scaling. My question is how to scale 2 Analog Inputs in U90 Ladder, if possible? Thankful in advance, Nikola Ljubinkovic
  2. Time logging problem

    Hi, I am facing troubles while trying to log and later display time using Jazz2 controller. So, I'm trying to make an error log. When the error occurs I store current content of SI31 (RTC time) to MI (MI33 in this case - so far it's working). Then in order to display the error I pass MI33 content to MI41 (MI41 is linked to Time Function variable (in CT format) that is then displayed on HMI) . You can see the whole process in images below. The problem is that in the end, the content of MI41 (decimal 1500 - which I corresponds to 15:00 time) is then displayed as 05:DC on the HMI display. I guess the problem is caused due to DEC/HEX conversion. Any idea how to fix this ? Thank You.
  3. MB manipulation through HMI

    Hi, I'm learning ladder by the aid of Unitronics JZ10-11-R10 PLC. While writing my 1st program I've ran into issue. The thing is that I can not find a way to input MB value from HMI. Are there any ways to do it ? Thank You
  4. Our 2015 training schedule is available on line. Or contact us direct to fast track your project with our dedicated engineers. Ideal if you already know PLC programming and want to save programming time and hardware costs. Free training for ALL new customers. http://www.i4automation.co.uk/training2.aspx
  5. Don’t reinvent the wheel!

    When you install the Unitronics programming software this includes a comprehensive set of example programs covering all aspects of Vision and U90 Ladder functions. These example programs can be opened by selecting Help > Examples from the Visilogic or U90 Ladder software. The examples split into two general areas, those which demonstrate how to use the PLC functions, such as maths or comparisons, and those which show how to configure applications, such as sending SMS messages or logging data to an SD card. If the example program that you need is written for the wrong type of PLC then simply Project > Export the PLC subroutines and then Project > Import them into a project for the correct PLC type. These small programs really work and can save huge amounts of development time as you learn from the experience of others. And if need further assistance then you can always ask us!
  6. I'm a new user of Ladder Logic and M91 PLC's. I'm trying to debug a program I have uploaded off of an old PLC. I understand that in U90 there is no way to force input/output states. Considering this how can you check that your logic is correct? E.g. how can I check that a certain combination of inputs will cause a change of state or particular output? [i don't consider a red flow of logic sufficient, especially as I can only see it for the power on state.] Thanks
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