Wiring Synthesis Removes a Splice

Symptom: Wiring Synthesis removes a splice that you have added manually after a previous wiring synthesis run.

Solution

Add a “Protect Wiring by Attribute/Property” constraint to the topology design or harness on which the splice is placed. When setting the constraint specify the name of the signal that passes through the splice.

For example, if the signal is called 2N-AUX-CTL-1, the constraint would be:

Do protect wiring of signals with attribute/property matching Name = 2N-AUX-CTL-1

See Assigning a Rule or Constraint to an Object in the Capital Design Tools - Common Functions User Guide for instructions on how to add a constraint.

Parent Topic:

Troubleshooting Wiring Synthesis

Capital Systems Integrator User Guide, 2512.2606

Unpublished work. © 2026 Siemens