Server-side project parameters are saved in the Workspace with the project and can only be edited within the Workspace. That means the parameter value defined in the schematic document overrides the value defined in the project options, and the value defined in the variant overrides the value defined in the schematic document. Altium Designer resolves this with the following order of precedence: Variant (highest priority) -> Schematic Document -> Project (lowest priority).

They also have a hierarchy, which means you can create a parameter with the same name at different levels of the project, each having different values. Document-level parameters are ideal for defining fields such as the document title and number, and project-level parameters are ideal for defining fields such as the designer or the project name.Īltium Designer supports parameters at various levels of the project - project-level parameters, document-level parameters (defined for a schematic sheet), and variant-level parameters. Parameters can also be defined at the schematic sheet (document) level and also the project level. General-purpose component parameters can be used for a variety of functions, including component detail, such as Wattage, Voltage, etc., supplier detail, including the supplier name and part number, library component design detail, such as the revision number of the symbol and documentation detail, such as a URL that links to a component datasheet. They are used to define the Designator and the Comment, as well as the general-purpose parameter strings that can be added to fully define it. For example, schematic components make extensive use of parameters. Parameters are general-purpose text strings that are child objects of a parent object that allow detailed information to be added to that parent object. User-defined design attributes are added to your design using parameters.

Adding a Parameter to Select Components.

Altium schematic library