Combining Wires

at a Cavity

A “Combine Wires at Cavity” action provides the ability to combine signals and wires in one step and to insert a splice at a cavity for wires from different signals.

If you insert a splice, the wires meet at the splice and a single combined wire goes from the splice to the cavity. For example, you might want to do this if you have three shields connecting to one cavity.

If you do not insert the splice, the wires are replaced by one wire. You might want to do this where you can combine the wires on one side of an inline connector but the wires need to be separate on the other side.

This video shows an example of combining wires manually in this way.

You can set a constraint on a connector, slot or design to trigger the combining of wires at a cavity when the post wiring synthesis action ‘Combine Wires’ runs. See Setting a Constraint to Combine Wires at a Cavity.

Prerequisites

Multiple conductors (wires or shields) from different signals must connect to the cavity. If all of the conductors are from the same signal, only the “Add Splice at Cavity” action is available (see Converting a Multiple Termination to a Splice).

Procedure

1. In the Design Browser (Design tab), right-click the cavity and choose Combine Wires at Cavity; the Combine Wires at Cavity Dialog Box displays.

2. Specify the signal name for the combined signal.

3. Select the wires that you want to combine and specify whether you want to insert a splice at the cavity.

4. Click Combine Selected.

5. If you have selected to insert a splice, the cursor changes to a black splice symbol . Position the cursor over the point on the diagram where you want the splice to be created and click. If you position the cursor over a location where the splice cannot be created, the cursor is a splice symbol with a line through it .

Results

• If you did not insert a splice, the wires combine.

• If you inserted a splice, the splice appears in the Design Browser (Design tab).

• The combined signal and combined wire are created and display in the Design Browser (Design tab).

• If you do not change the default name for the combined signal, the combined signal is named according to default naming.

Parent Topic:

Combined Signals and Combined Wires

Related Topics

• Combined Signals and Combined Wires

• Setting a Constraint to Combine Wires at a Cavity

Capital Systems Integrator User Guide, 2512.2606

Unpublished work. © 2026 Siemens