Vijeo Citect 7.4 not giving extact data of PM 5500

Hi Everyone,
I am using Vijeo Citect 7.4 to read the PM5500 data through the gateway. The problem is I am getting raw values, and the value changes continuously each time. I am following all the steps in the express wizard to define the variable tags. I do not know where I am wrong. Can someone guide me?

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  • Hi  

    Can you share more information about what driver you are using? I assume it is the MODNET driver in Citect.

    If you are seeing "raw values" changing continuously, it sounds like you might not have the word alignment quite right for your tags. E.g. you are reading two adjacent words from different variables within the PM. I'd recommend using a simple Modbus Test Client App to poll two words at a time and start at an address, to confirm you are getting back what you expect.

    Also, not sure what express wizard you are referring to? This is usually just used to create an IO Device and configure it, not actually define the variable tags.

    Lastly, the other thing you can look at is the Raw and Eng Scale on the variable tag. It can help adjust any field values to more human readable values.

    Last piece of advice, you should try upgrade to newer version of Citect SCADA (now known as Plant SCADA). It has many new features, bug fixes and enhancements.

Reply
  • Hi  

    Can you share more information about what driver you are using? I assume it is the MODNET driver in Citect.

    If you are seeing "raw values" changing continuously, it sounds like you might not have the word alignment quite right for your tags. E.g. you are reading two adjacent words from different variables within the PM. I'd recommend using a simple Modbus Test Client App to poll two words at a time and start at an address, to confirm you are getting back what you expect.

    Also, not sure what express wizard you are referring to? This is usually just used to create an IO Device and configure it, not actually define the variable tags.

    Lastly, the other thing you can look at is the Raw and Eng Scale on the variable tag. It can help adjust any field values to more human readable values.

    Last piece of advice, you should try upgrade to newer version of Citect SCADA (now known as Plant SCADA). It has many new features, bug fixes and enhancements.

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