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SA Project - Info Zone - Interlock Permissives

Chris

Hello,

Wondering if there is a way to add simple permissives to this list without needing to add Equipment References. I have permissives in PLC logic that I have an Equipment item (DIGITAL Tag), and simply would like to configure a list here. Those PLC permissives are sometimes based on complex calculations performed in the controller and can't be tied to a simple, "Valve is opened", "Temp is above the Low Limit" types of references.

Thanks,

Chris

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  • Hi

    Yes this is exactly what i did. I referenced the local equipment and that seems to work.

    The reason i want to do this is to not have to change references for a particular interlock inte borg Scada and Plc. I find it best to not duplicate the code(having the interlock logic both in Scada and Plc) but instead only using internal interlocks for easy of dev and maintenance... will see if it pans out bu so far it looks promising!

    /Alex
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  • Hi

    Yes this is exactly what i did. I referenced the local equipment and that seems to work.

    The reason i want to do this is to not have to change references for a particular interlock inte borg Scada and Plc. I find it best to not duplicate the code(having the interlock logic both in Scada and Plc) but instead only using internal interlocks for easy of dev and maintenance... will see if it pans out bu so far it looks promising!

    /Alex
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