Casio Privia PX-800 User Manual page 29

I MIDI
To change this
setting:
Send Channel MIDI/OTHERS
Local Control MIDI/OTHERS
Use this keyboard
key:
C.01 to C.16
L.on: On
L.oF: Off
Settings
Specifies one of the MIDI channels (1 through 16) as
the Send Channel, which is used for sending MIDI
messages to an external device. When configuring
this setting, use the procedure under "To configure a
setting using the MIDI/OTHERS key" on page E-22.
When Local Control is turned on, pressing the
keyboard's keys plays the notes using the currently
selected built-in tone, and also sends the applicable
MIDI messages out the MIDI OUT port. Turning off
Local Control cuts off the digital piano's sound
source, so no sound is produced by the digital piano
when keys are pressed. This capability comes in
handy when you want to turn off the digital piano's
keyboard and play on an external sequencer or other
device. When configuring this setting, use the
procedure under "To configure a setting using the
MIDI/OTHERS key" on page E-22.
Configuring Settings with the Keyboard
Description
E-25