Thanks Ash.

?

I tried to research more about the <c> and <JI> commands you mention - it seems to be part of the language used between JMRI and DCC-EX over USB, have I got that right…?

?

Is the use of the <JI> command between JMRI and DCC-EX (running on an uno) therefore dependant on a JMRI update before it can work??

There was a setup menu of sorts under the current monitor submenu, but I didn’t get a ‘none available’ message, just a little blank square pop up, which I assume was supposed to be that message. Makes sense, since I’m running DCC-EX on an Uno, as you say.?

I’ll take a look at Discord (never used it before) and see if I can pick the brains of the DCC-EX guys.