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Cosmin Borcan

Trend Tool in CitectSCADA 7.4

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Greetings, everyone! I come back here seeking for help. Here is my (detailed) issue: > I have a simple INT variable tag, let's call it temperature (with Eng Zero and Full Scale defined). > Afterwards, I defined the trend tag temp, with the following options: - type: TRN_PERIODIC; - storage method: Scaled (2-byte samples); - sample period: 0.500. > I used the Trend Tool, and inserted the trend in my graphic page and (in the Trend Properties) I assigned one of the pens with the trend tag temp. After doing all of these, and after compiling and running the project, nothing is shown in the trend graph. I must mention that I can modify the value of temperature analogically in the graphic page using some buttons. My OS is Windows 7 Ultimate, 64 bit. Can anyone please help me with this issue? I really must know if my way of doing things is not in order. Looking forward to anyone's reply.

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Could be something simple as running the computer setup... Have not used Citect after V5.5 but remember if you didn't check Trend Server at computer setup your trends wouldn't run.

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Also have a look at the scaling of the tag - if the tag is scaled incorrectly with respect to the scaling of the trend you will see nothing.

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