Add tags to trend at runtime

Hello,

is there a possibility to add tags to an opened trend control at runtime? I mean something like in InTouch, where you can add any historical tag to trend view.

Hi ya_vo,

WinCC Unified - Simple Sample: Trends pen control by script

Hi Hazard_7,

thanks for your reply, but this post is not what I'm looking for.

What I need is: when I have an open trend, to be able to select additionally any archived tag I want. For example: I have an analog value "Pump1.Flow' and when I click on it - it's trend window opens. Then I want to add the tags "Pump1.Current" and "Pump1.Speed" and see all three curves on that same trend window. This is how it functions in InTouch (gave it as example, because it's pretty popular software) and in other HMIs.

In the example from the post you suggested I have to make a button for every single tag, which is impractical - sometimes I need 100s of archived tags.

ya_vo

Hello,

is there a possibility to add tags to an opened trend control at runtime? I mean something like in InTouch, where you can add any historical tag to trend view.

Hello ya_vo,

In WinCC Unified V19 in a screen you just drag and drop an IO field to the trend control in the PC runtime. Then the trend control shows the trend of the subject tag.

Currently it works for current value only not for logged values. The trend area should be empty for this functionality to work. When a screen change happens, the trend is not persistent.

Thanks Murof !

This is exactly what i meant.

New question published by Thiago_R_S_Rodrigues is split to a separate thread with the subject Creation of a new trend in the object.

Best regards
Jen_Moderator