Applies To:
  • CitectSCADA 6.xx
  • CitectHMI 6.xx
Summary:
In some versions of Citect the function PageTrend( ) does not work. How can I open a Trend Page and assign the Trend Pens to display via one Cicode call?

Some of the possible workarounds are quite convoluted, and often require making several Trend pages.

 

Solution:
One possible workaround is to create a Trend Page that uses SuperGenie Substitution in order to have one standard template where you can set the Trend Tags via Cicode.

* Create a new page based on the Trend template and call it "SG_trend".

* Open the Page Properties for that Page, for the "On Page Shown" event and add the following command:

trnsetpen(250,1,?STRING 1?);
trnsetpen(250,2,?STRING 2?);
trnsetpen(250,3,?STRING 3?);
trnsetpen(250,4,?STRING 4?);
trnsetpen(250,5,?STRING 5?);
trnsetpen(250,6,?STRING 6?);
trnsetpen(250,7,?STRING 7?);
trnsetpen(250,8,?STRING 8?);

NOTE: This assumes that the AN of your Trend is 250, which it is on the standard CSV Trend template.

* Save and close the page.

Now you can invoke this page and assign what trends to display with a simple one line call using the AssPage function, and using SuperGenie substitution.

* On the page that you want to open your Trends from, create a button with the following Cicode, where Trend1->Trend8 are the names of your configured Trends.

AssPage("SG_trend","'trend1'","'trend2'","'trend3'","'trend4'","'trend5'","'trend6'","'trend7'","'trend8'")

NOTE: The syntax of the SG_Trend is the name of the page, and is surrounded by " marks.
NOTE: The Trend1 etc. are surrounded by " marks AND ' marks. This will use SuperGenie substitution to parse a string instead of a Tag Value. i.e. " ' Trend1 ' "

 
Keywords:
Trend Page trnsetpen assign pens cicode trn pen pagetrend trendpage

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