I just created a definition file for the new Siglent SDP4000X series of power supplies, covers the SPD4121X, SDP4306X, SPD4323X, have attached it for inclusion.
I have one bug still in it which I could not solve, the CH3 OFF/ON buttons won't disable using the :enable: tag (line 535), it is referencing the cmd at line 319 for the Independent/Series/Parallel selection. This same variable is used with other controls that DO disable, so I know the variable being used for the enable itself is OK, odd thing is I am sure it was working early on when I was writing the definition, I am probably missing something stupid which is breaking it.
Updated file is included a few posts below this one...