I certainly see where you’re coming from, using abbreviations, however I find so much convenience in using more verbose names, as then these can simply be used in the display of their values as well. For example a setpoint could simply be named accordingly and then when displayed on the screen, its name can be used in the label. It’s also useful for trend names and alarm display paths (to an extent - if the tag path is too long, obviously this causes issues for reading efficiency). The same can be achieved with an abbreviated tag path, however it’s more of an issue for newcomers who haven’t yet learnt the terms defined. I’m still very much on the fence…
I usually grab the P&ID reference from my DeviceName UDT parameter (usually the tagname in the PLC) and map it through to an expression tag (in 8 I could simply read the parameter value instead).
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