10-12-2011 03:54 PM
Hi All,
So I am monitoring CO2 data for 7 different units. However, I only have one CO2 monitor for all 7 units. What this means is that I monitor Unit 1for an hour, then Unti 2 for an hour, etc. I can produce a graph of the CO2 values in MAX. What I would like to do however, is somehow annotate this graph with the string data that will tell me which unit I was looking at for any given time. Is this possible?
To put it another way, I want to go back and see "oh, the red parts are Unit 1, the green parts are Unit 2, ect). I can produce both the CO2 data and the string data but I've only been able to figure out how to view the string data by exporting it out of MAX to text or excel. I suppose I could then go back and link up the sting data and the CO2 data outside of LabVIEW using time as the common value.
Thanks!
Mike
10-13-2011 06:40 PM
Hi Mike,
One solution would be to create a unique channel for each unit. This would place seven plots on the same graph. The plots associated with each of the systems not connected to the monitor would be relatively flat, while the plot associated with the one unit that is connected would show the data. You would know which unit was connected to the monitor because of the color. (e.g. Channel 0 = Plot 1 = Blue) Additionally, you could change the label in MAX for each plot to the name of the respective unit. Thus, blue line, for example, would now have a label of "Unit 1". The only difference between this and your current setup is that when you connect your monitor to a different unit, you would also have to change the channel as well.
Regards,