Further experiments throw a little more light on the problem.
If in the Foot Controllers menu I set the expression control to Part Expression rather than Total Expression, the expression pedal will then control the software organs running on the PC.
This takes me back to a previously encountered problem. I also use the KN7000 as a full organ by means of an additional 61 note MIDI controller keyboard and 30 note MIDI pedal board connected to the KN7000 MIDI input via a MIDI merge unit.
In this situation I normally assign Right 1 and 2 parts across the whole KN7000 keyboard, Left to the additional controller keyboard and the pedals to part 15.
In part expression mode the KN7000 expression pedal still controls right and left parts OK but has no effect on part 15. Whilst actually in the set up menu for part 15 it appears to respond as expected when the expression pedal is toggled on or off but as soon as the menu is exited it reverts to the off mode.
In summary it would appear that in Total Expression mode KN7000 expression pedal information cannot be transmitted to an external MIDI device and in Part Expression mode, the KN7000 expression pedal information cannot be applied to parts other than Right 1, Right 2 or Left where the note information is being supplied by an external MIDI controller.
Is this the way it was intended or does this indicate a software bug in this area?
Len C.