adccommunitymod (AutomationDirect) asked a question.

usb line trend log quits

Created Date: November 26,2009

Created By: rilver

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here is my setup. DL06 plc 8 " c-more screen. Am logging 6 line trends to USB stick. It logged up to 23:59hrs (time) and now it does not start a new day. It seems that some how it just quit logging just when it was supposed to start a new file.I have about 5 days where it logged perfectly and now it just quit. Has this happened to anybody? The USB stick was formatted beforehand and hardly has any files on it. Any ideas would be appreciated.


  • adccommunitymod (AutomationDirect)

    Created Date: December 01,2009

    Created by: HMI Eng

    Chances are, all of your trend files have the same first 3 letters. The filing system in CE uses the old DOS file name restrictions, so if the trend is Trend 1, the Trend file name you see is:

    Screen 1_LineTrendGraph1

    Screen 1_LineTrendGraph2

    Screen 2_LineTrendGraph1

    Screen 3_LineTrendGraph1

    but internally they are named:

    Scr~001.txt

    Scr~002.txt

    Scr~003.txt

    Scr~004.txt

    If you have a lot of trends on one screen, and/or the screen names have the same first 3 letters, then you quickly get to

    Scr~999.txt

    When you get to here, there are no more unique file names for that directory and presently C-more it will not overwrite the old files.

    So the solution is to change the Screen names so that the first 3 letters of the file names are different.

    Pump House_LineTrendGraph1

    Pump House_LineTrendGraph2

    Mezzanine_LineTrendGraph1

    Basement_LineTrendGraph1

    Then the internal file names become:

    Pum~001.txt

    Pum~002.txt

    Mez~001.txt

    Bas~001.txt

    If this is not the situation, please contact Technical Support

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  • adccommunitymod (AutomationDirect)

    Created Date: November 26,2009

    Created by: rilver

    here is my setup. DL06 plc 8 " c-more screen. Am logging 6 line trends to USB stick. It logged up to 23:59hrs (time) and now it does not start a new day. It seems that some how it just quit logging just when it was supposed to start a new file.I have about 5 days where it logged perfectly and now it just quit. Has this happened to anybody? The USB stick was formatted beforehand and hardly has any files on it. Any ideas would be appreciated.

    Expand Post