Trend Window History always reset
I have a problem with Trend Window, it always delete the trace whenever i go to other FGR. my Record Duration and Display Duration is T#8h so i wonder why is it always reseting.
How can i solve this problem?
Thanks.
How can i solve this problem?
Thanks.
Asked 8 months ago
Answers
0
Hello to you,
if you are using a integrated Trend in FGR, this trend is only active if this graphic is active.
If you change the graphic, then there is no trend recording.
This trend is not usable for historical recording.
Regards
if you are using a integrated Trend in FGR, this trend is only active if this graphic is active.
If you change the graphic, then there is no trend recording.
This trend is not usable for historical recording.
Regards
Answered 8 months ago
0
A Trend object in a FGR collects Data only as long as the FGR is active as tr10091969 already said.
You would need to configure a Trend Display with an archive function to keep a history. But that history can only be shown in that Trend display.
You can either use Trend acquisition function blocks running in the controller or use the Trendserver of Freelance to create Trend-Displays based on variables not collected by the controller. The latter can also be used for user defined trend displays (with a limited history storage) to be created by an operator.
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