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PLC Trend Chart Settings And Monitoring

PLC Trend Chart Settings And Monitoring
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In our previous article, we gave examples of the advantages of trend chart and how to use it in plc. In this article, we will examine how to create a trend chart by writing a program in plc.
We created a timer for the plc trend chart we will create and a command for the sine function.

As you can see on the 1st line, when the timer reaches the preset value, we ensure that the timer starts again with the done contact for the continuation of the cycle.

plc programming img 5f0f2487ccf41 plc

 

In the Assets tab under the Controller organization tab,
We create a new trend chart by right-clicking the Trends folder and clicking the New Trend button.
plc programming img 5f0f24ea0ab6f plc

In the window that opens, we name the Trend chart and determine the sampling period and move to the next setting window with the Next button. I usually select the sampling period as 1000 milliseconds 1 second. This is enough.

If we know the tag name, after typing the tag name in the Select tag section, after clicking the Add button, our Tag name is added. If we don’t know, we have to choose from here.
We added one tag to be an example of the trend chart. You can add more tags if you want.

plc programming img 5f0f25f9093c9 plc

By pressing the Finish button, we finish adding tags to the PLC trend chart.

plc programming img 5f0f26f492bd3 plc

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Right-clicking the trend chart, we will enter Chart Properties and adjust it.

plc programming img 5f0f272671435 plc

You can easily adjust the settings by navigating through the tabs in the trend features. You can color the chart by choosing the color and line thickness that suits you.

plc programming img 5f0f2804a2387 plc

What is important to you
X-Axis: Time chart range: Setting how much data is displayed on the screen
and Y-Axis: Minumum ve Maximum value options: the range on the y axis in the chart.
As an example, we selected Min: -1 Max: 1 because the sine function is in the range of -1 and 1. But you are watching an analog value and if the maximum varies between 100 and 20, you can change these values ​​accordingly. Or if you select the automatic option, it automatically formats the graphic according to the maximum and minimum values ​​of the tag you add.
After our settings are finished, we save it by clicking the Apply button.
And we run our trend by pressing the Run button on the trend chart page.

plc programming img 5f0f283bc74ca plc

[irp posts=”3638″ name=”PLC Trend Page Usage, Tag History and Monitoring”]

Tags: plcprogramProgrammingtrend
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The objectives of PLCtr are to provide practical instruction and help for anybody involved with PLCs from the maintenance staff to the PLC programmer. You don’t necessarily have to be a “writer” to contribute. If it has anything to do with any PLC and the devices connected to it then we are interested. If you want to become a writer, please write to us on the contact page. Join us.

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