RJE Posted February 18, 2009 Share Posted February 18, 2009 Now that I have the power of DF to pull in all this data I am trying to figure out what to do with it. Here is where I'm at in the testing stages. I poll a serial device for data every minute for Relative Humidity values. I get the data, convert it to a meaningful number and then AddValue to a channel. The data is then displayed on a graph which works well. These channels are set up for 144 History and 3000 Persistance, my idea here is that there will always be enough past history to be displayed when the computer has to be restarted for maintenance, XP updates etc. Also there would be enough history to go back in time to trace a problem. These numbers may be a little large at this stage but you get the idea, that is if I'm on the right track. So sitting down at the computer and opening the RH page I would see a good history of the RH of certain areas. Now I wouldn't want to keep all that data but may be take the min/max/ave points (with time stamp on min/max) for each day at midnight and put that into a channel(s) and then log that to a file. So far when trying to get min/max values from a channel on day 16 I just kept getting into infinite loops which makes me thankful for the multiple loop terminate feature in DF. Thanks for any help. Link to comment Share on other sites More sharing options...
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