Yamaha PM1D Supplementary Manual page 17

Scene Link Event
It is possible to input two or more messages, as
long as the total stays within 32 bytes. However
you should be aware that, depending on the type
of message, the receiving device may not be able
to process MIDI events received in immediate
succession.
If you input more than 32 bytes, a warning of
"LENGTH OVER!" will be displayed, and you
will not be able to press the STORE button.
Delete characters until the warning is no longer
displayed.
You cannot input "FE" (Active Sensing) as a
MIDI code.
While inputting the MIDI event, you can click
the EVENT CODE SET button and insert the
event that specifies the output destination. This
lets you output events to different MIDI OUT
connectors.
ƒEven if you recall a scene for which a fade time is
set, the MIDI event will be transmitted immedi-
ately after the scene is recalled.
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