Movicon 11.6: Trend

    "Trend" is an another important concept in industrial automation systems and most of the time trends and graphics essentially use in automation systems. Movicon 11 SCADA provides us very flex and strong toll which should be used in many different kind of industry. I used Trends at my last Energy Monitoring project intensively which basically show the daily changing of the energy consumption such as Water, Steam, Nitrogen and Electric. They shows So I decided to write a post which is related to the Trend with a basic example. I listed ingredients of the sample program below;

• Basic Script
• Trigonometric computation at each second change
• Event
• The script will be executed at every system second is changed
• System Variable and Double Type Variables
• System second for event
• Double variables; Degree[0...360], Sinus Value[-1...1] and Cosine Value[-1...1]
• Some Important Links
• YouTube Link
• Sample Programs and Documents

    The data that you want to show in Trend may come form peripheral devices or you produce in scripts. I prefer to choose second one. There is "Computation" script will be executed at every second change(event) to compute sine and cosine of degree variable. You can find some of mathematical instructions below Figure 1.

Figure 1: Some Of Mathematical Instructions

 

    In Figure 2, you can see the "How To Produce Data For Trend"(background of the trend). I used variables directly, but you can use the members of the data loggers. (On the properties, there is "Data Logger Link". Choose from there to the specific DL and then click below "Refresh Pens From Data Logger" side).

Figure 2: How To Produce Data For Trend

    After adding Trend object and editing pens of the trend, you will probably see something like Figure 3. In addition to that, you can find more information from YouTube video.

Figure 3: Trend Pens Configuration

    There are many different ways to show data onto the Trend. This short explanation may be helpful as an introduction to the Trend subject. I am going to add YouTube video for "How To Prepare Trend" below.

Video: Movicon 11.6: Trend

    If you have face a problem with don't hesitate to contact with me. On the other hand, If you give me feedback, I would like to add to this post as an improvement...

Thanks For Reading...

Okan Okumuş

21.07.2020