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What is the main goal of Multiprocess ?

Anton

When we select multiprocess we have any troubles (each process has personal local variables and etc)/ Which bonus we have when we select multiprocess ?

In other SCADA systems (for example WinCC, InTouch, RSView32, iFix, Proficy) we have not anything like multiprocess/single_process in Citect .....

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  • Hi Anton,

    Eric was just indicating that what is common for customers who want variables that are shared between all computers and processes, and not stored in a PLC, then we typically create a OFSOPC device, set it to Memory Mode and set it's Persist property to True. If you don't set the persist property then the value will be lost on shutdown. See "Using Memory Mode" and "Using Persisted I/O Memory Mode" in the help for more info.

    The "Local" Variable Tag in Citect is typically used for usecases where you want something stored just for that machine. E.g a user interface option in your project, so that different clients can have different settings.

    I hope that helps.

    Cheers,
    bradley
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  • Hi Anton,

    Eric was just indicating that what is common for customers who want variables that are shared between all computers and processes, and not stored in a PLC, then we typically create a OFSOPC device, set it to Memory Mode and set it's Persist property to True. If you don't set the persist property then the value will be lost on shutdown. See "Using Memory Mode" and "Using Persisted I/O Memory Mode" in the help for more info.

    The "Local" Variable Tag in Citect is typically used for usecases where you want something stored just for that machine. E.g a user interface option in your project, so that different clients can have different settings.

    I hope that helps.

    Cheers,
    bradley
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