When using direct port access to serial targets of Dominion SX, combined with accessing ports on the SX without using CC-SG, it is recommended that the port name and the node name for the target are identical.
If the port name and the node name are not the same, you will need to know both names, and use the correct name depending on your point of access. For example, depending on whether you access via CC-SG, or directly via SX.
CC-SG enforces unique node names. Make all changes in CC-SG using these procedures to ensure a unique name is propagated to the port, to keep names in synch, and to prevent connections from going to the wrong target.