After you create the logical parts of a heterogeneous part in your library, you need to assign a unique property value to each one. For example, create a property name called PACKAGE.
Warning: Do not create GROUP as a property name. This may cause problems when you annotate your design for a PCB Editor tool, such as Allegro PCB Editor. The GROUP property is reserved in PCB Editor for a specific purpose.
To create this property:
- Double-click on the empty space beside the logical part to get the User Properties dialog box.
- Choose the New button, type in PACKAGE into the Property box and a 1 in the Value box.
- Click twice to attach that property to the logical part.
- Add this new property to each logical part in your package (part A, B, C, and so forth).
- Save your library with the new part in it.
Open your schematic and place the A, B, C (and so on) logical parts of your heterogeneous parts appropriately in your design. After you place each logical part, double-click on the part to get the property editor. Edit the value of the PACKAGE property shown in the spreadsheet. Leave the Value of 1 on that property for each logical part of the first set you place; assign a Value of 2 to each logical part in the second set; assign a Value of 3 to each logical part in the third set, and so on. Capture uses these values to group the heterogeneous parts correctly when assigning reference designators.
- Any alpha or numeric character, word or set of numbers may be used as a value for the “PACKAGE” property. It is not necessary to just use numbers.