Marc,
I believe you have interpreted the table in the SE8C manual incorrectly - something that I have done many times in the past; those tables make sense to the engineer at Digitrax, and perhaps a few others, but the average joe often finds them difficult to understand.
Doug Stuard tested the SE8C operation very carefully with respect to SE8C OpSw14 and documented his findings. My notes show that he provided his test results in post # 163882, but I cannot determine which list, and on which site, that post came from. Searches of the jmriusers groups.io list did not find that post.
Doug found that the default, SE8C OpSw14=Thrown, made the SE8C respond ONLY to the turnout control packets found on the DCC track signal on the "RailSync" wires. LocoNet "Data" wires were ignored (for signal control) when OpSw14=Thrown.
He found that when SE8C OpSw14=Closed, the SE8C responded ONLY to the turnout messages found on the LocoNet "Data" wires. The DCC track signal on the "RailSync" wires was ignored in this case.
Regards,
Billybob
