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Thread: Extended trend with opc-variable

  1. #1
    Join Date
    25.04.2011
    Posts
    7

    Default Extended trend with opc-variable

    I try to use extended trend with archive. First, I set up the archive. The archive contains one variable from the opc-driver (opc-variable name: @PBuilding.@SLocations.@DF10_Vent.@OHwInput12.@Nnv oTemp4_val.@FSNVT_temp#SI).

    If I use this variable then the extended trend does not show anything. But if I bind with allocations the opc-variable to the internal variable (internal variable name: Temp4) and add the internal variable to the archive, the extended trend will show the curve of Temp4.

    And I have a question: can I change the long opc-variable name for a short without using the internal variable and allocations?

  2. #2
    Join Date
    18.07.2011
    Posts
    136

    Default AW: Extended trend with opc-variable

    Hi robcha.

    Well that's strange. Have you already tried to check on that archive using an archive revision screen? If you open the archive with this screen to you see any entries in the list?
    Well, do you use the classic OPC driver or the OPC UA Driver?

  3. #3
    Join Date
    25.04.2011
    Posts
    7

    Default Re: AW: Extended trend with opc-variable

    I checked the record opc-variable using archive revision screen. OPC-variable value is written to the archive according to the settings. I use OPC Client V2-0 driver.

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