Element types used in models
- Last UpdatedMay 21, 2025
- 1 minute read
- PI System
- PI Server 2024 R2
- PI Server
Six core element types are used to enforce connectivity rules between elements of a model.
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Use a Node to represent a physical entity in your model, such as a tank, valve, or process unit.
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Use Measurement to indicate that the element is used for ascertaining dimensions, quantities, capacities, etc., such as, meters or scales.
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Use Flow to indicate that the element carries material from one element to another.
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Use Transfer as a temporal flow. The existence of a transfer in a model is only available in the context of time, for example, in a case. Transfers can also be accessed by performing time-based searches of the database.
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Use Boundary to define the input and output ports for the model.
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Use Other to represent a logical collection of attributes, such as a recipe.
In addition to the core element types, two other types are supported: Any and None. Use the Any and None element types when you define the connectivity rules for a port.