Composite Symbols

A composite symbol represents an electrical device containing one or more blocks. The blocks are represented by nested device symbols that also exist within Capital Symbol Designer as individually-selectable symbols. The complete composite may also contain optional internal connectivity and cross-reference placeholders.

When placing a composite symbol in Capital Logic Designer, you have the choice of placing the complete composite or any of the sub‑blocks. If you place the complete composite, the placed graphics will match the composite symbol. If you place one of the sub-blocks, the placed graphic will match the original sub-block symbol. To place additional instances of the device, you can again choose to place the complete composite or one of the sub-blocks.

Note

If the project preference “Disallow pin duplication within a design” is selected, you cannot place the composite and a sub block together as this would create duplicate instances of the same pin. To permit such placement, clear the “Disallow pin duplication within a design” project preference.

The composite symbol can be used as a plug map that you use to create a shared pin list for a device in Capital Project Manager. See also the Capital Project Manager User Guide. Note that when you set whether pins are reserved or unrestricted, the pins on an individual block must all be unrestricted or all reserved for the same designs.

When you add the shared device to a diagram in Capital Logic Designer, the blocks can be used to refine the selection of pins and to enable you to place a more specific symbol representing the pins in that instance on the diagram. See also Shared Objects.

See Cross-References on Objects or Pins for how cross‑references work with composite symbols.

From Capital Logic Designer, you can change the composite symbol that is used for a shared device.

• Updating a Symbol Block in a Composite Symbol

• Replacing Composite Symbols for Shared Devices

Parent Topic:

Symbols

Capital Logic Designer User Guide, 2512

Unpublished work. © 2025 Siemens