How are Pi Data Points connected to a particular equipment or machine line
Does your question refer to the data collection or are you asking about how equipment represented in PI Asset Framework links to PI Points?
PI Interfaces are usually used to collect data from SCADA, DCS, PLC Systems into PI Points. There exist many different kind of PI Interfaces for many different kind of communication standards like OPC DA, Modbus and many others. PI Interfaces are built against a unified framework called UNIINT and different PI Interfaces have a lot in common.
A specific interface instance is set up with a unique combination of Pointsource and Interface ID. The assignment of PI points to a particular interface instance is through the PI Points Pointsource and Location1 attribute parameter. There is additional configuration e.g. scan frequency which is controlled via interface parameters and point attributes. To get the full picture, it is necessary to consult with the interface manual.
PI Connectors represent the next generation of data collectors and work asset centric. This means PI Connectors are not looking up belonging points by Pointsource and interface ID but use an Asset structure in an AF Database. For details, please consult with the specific PI Connector's documentation.
PI AF Server represents the Asset or equipment storage. The hierarchical level mainly consists of Database(s), Element(s) and Attribute(s) where Elements represent a certain piece of equipment. Attributes are used to refer properties and measurement values of the equipment. Attributes can be linked to PI Points which means they use the PI Point Data Reference. There exists other Data References like Formula, String Builder, Table Lookup etc. Attributes with Data Reference = <none> are also referred to as static Attributes.
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