Tracing a value with a Graph widget
Hi, is it possible to record a value( CAN / calculated or other) in a graph widget.
The example we want to display is a rolling history of outside air temp over the last 24 hours, sampled every half an hour and drawn as a line graph.
I guess we need to use a list, but cant figure out how to attach signals to the list? The manual is little vague on this area too, or I may be missing something obvious.
As always, your help is much appreciated :)
-
Hello Dave,
That would be a good application for the Graph Widget. There is a good demo showing how to use the Graph Widget and a List control on the old forum.http://forum.fwmurphy.com/viewtopic.php?f=26&t=933
The list is updated by the Add List Item Activity Program which runs on a timer. The variables used to update the column values in the list can be from CAN variables or an expression.
I don't think there is a way to attach the file here so let me know if you can't get the file from the old forum and we will figure something out.
Thanks,
Boyce
Please sign in to leave a comment.
Comments
2 comments