Combining Multicores

In Capital Systems Integrator, you can combine multicores. Normally, each multicore in a vehicle is used to implement a single logical multicore defined in the system designs. However, in some cases, it is desirable to re-use a multicore to implement more than one, mutually-exclusive logical multicore. You can achieve this by creating a combined logical multicore and combined physical multicore.

Note

You cannot combine overbraids.

Prerequisites

• You can combine two (or more) logical multicores as long as each signal in one multicore can be combined with a signal from the other multicore(s). The structure of the multicores must be identical: same number and type of conductors, same hierarchy, same shielding (though the shield terminations can be different). In addition, each multicore must share an end point with at least one other multicore from the set of multicores to be combined (that is, connect to the same device pin or map to the same connector cavity).

• You can combine two (or more) physical multicores as long as each wire in one multicore can be combined with a wire from the other multicore(s). The multicores must be part of a combined logical multicore.

• If you want to combine logical multicores, you must be in single user mode. You can combine physical multicores in multi user mode if their logical multicores are already combined and if you have their respective harnesses locked.

Note

It is possible to combine physical multicores that have no functional source as long as their signals have all been combined (manually). In this case, although the physical multicores will display under the relevant harness node in the Design Browser (Design tab), the combined multicore will not display under the general Multicores node because it has no logical multicore parent.

Procedure

1. Expand the Multicores node in the Design Browser (Design tab) so that you can see the multicores.

2. Pick from the following procedures. If you want to...

Do the following:

Combine selected logical multicores.

Select two or more logical multicores in the Design Browser, right-click them, and choose Combine > Selected.

Combine one selected logical multicore with another.

Select the logical multicore in the Design Browser, right-click it, and choose Combine > With > .

Combine one selected logical multicore into a combined logical multicore.

Select the logical multicore in the Design Browser, right-click it, and choose Combine > Into > .

Combine the physical multicores of a combined logical multicore.

Select the combined logical multicore in the Design Browser, right-click it, and choose Combine > Multicores > .

Combine one selected physical multicore (which can be a combined one) with another.

Select the physical multicore in the Design Browser, right-click it, and choose Combine > With > .

Combine selected physical multicores (one or more of which can be a combined one).

Select two or more physical multicores in the Design Browser, right-click them, and choose Combine > Selected.

Results

• For logical multicores, the system combines each child signal in the multicores based on the rules for combining signals. See Combined Signals and Combined Wires.

• For physical multicores, the system combines each child conductor based on rule for combining wires and shields. See Combined Signals and Combined Wires.

• Where shields have pigtails, they are combined as follows: Shields at an inline: In this case, the system combines shields as it does wires. The result is a single shield connected to a single cavity. If at least one of the shields previously had a pigtail, then this is retained. If both had pigtails, only one pigtail or splice is retained. If neither had a pigtail, then the resulting shield is directly connected without a pigtail.

Shields at common slot cavity: This case is similar to shields at an inline. The result is a single shield connected to the single cavity. If at least one of the shields previously had a pigtail, then this is retained. If both had pigtails, only one pigtail or splice is retained. If neither had a pigtail, then the resulting shield is directly connected without a pigtail.

Shields at different slot cavities: The system can support this case only if the shields have pigtails. The result is a single shield connected to a pigtail splice with multiple pigtail wires. Each pigtail connects to the same cavity to which it was already connected.

• Multicore attributes and properties combine according to any Multicore Specification constraints that are set.

• The system updates the Design Browser (Design tab) to show the combined multicores. See Multicores in the Design Browser.

Parent Topic:

Combined Signals and Combined Wires

Capital Systems Integrator User Guide, 2512.2606

Unpublished work. © 2026 Siemens