P-125, P-121 MIDI Reference
2
MIDI Functions
You can make detailed adjustments to MIDI settings.
MIDI transmission channels in
Dual, Split or Duo
Voice 1 data is transmitted on its specified
channel and Voice 2 data is transmitted on
the next greater channel number relative
to the specified channel. In this case, no
data is transmitted if the transmit channel
is set to “OFF.”
ALL:
“Multi-timbre” Receive. This allows
simultaneous reception of different parts
on all 16 MIDI channels, enabling the
instrument to play multi-channel song
data received from a computer.
1+2:
“1+2” Receive. This allows simultaneous
reception on channels 1 and 2 only,
enabling the instrument to play 1 and
2channel song data received from a com-
puter.
Program change and other like channel
messages received will not affect the
panel settings of the instrument or the
notes you play on the keyboard.
Data for the Demo Songs and Preset
Songs cannot be transmitted via MIDI.
In any MIDI control setup, the MIDI channels of the transmitting and receiving devices must be matched
for proper data transfer. This parameter enables you to specify the channel on which the instrument trans-
mits or receives MIDI data.
Setting the Transmit Channel
While simultaneously holding down the [METRONOME] and [RHYTHM] buttons, press one of
the C4–D
#
4 keys.
Default setting: 1
Setting the Receive Channel
While simultaneously holding down the [METRONOME] and [RHYTHM] buttons, press one of
the F4–A4 keys.
Default setting: ALL
“Local Control” refers to the fact that, normally, the keyboard of the instrument controls its internal tone generator, allowing the inter-
nal voices to be played directly from the keyboard. This situation is “Local Control On,” since the internal tone generator is controlled
locally by its own keyboard. Local control can be turned OFF, however, so that the keyboard of the instrument does not play the inter-
nal voices, but the appropriate MIDI information is still transmitted via the [USB TO HOST] terminal when notes are played on the
keyboard. At the same time, the internal tone generator responds to MIDI information received via the [USB TO HOST] terminal.
Default setting: ON
While simultaneously holding down the [METRONOME] and [RHYTHM] buttons, press the C5
key. Pressing the C5 key repeatedly toggles between Local Control On and Off.
• For instructions on how to connect this instrument to the computer, refer to the “Computer-related Operations” downloadable from the Yamaha Downloads website.
MIDI Transmit/Receive Channel Selection
NOTE
C0
C1
C2
C3
C4
C5
C6
C7
C1
C2
C3
C4
C5
C6
C4
F
#
4
C
#
4
D
#
4
G
#
4
F4
C4 D4
G4 A4
P-125
P-121
Channel 1
Off
Channel 1
1+2
1 step up
1 step
down
1 step
down
1 step up
ALL
Transmit
Channel
Receive
Channel
Local Control ON/OFF
C0
C1
C2
C3
C4
C5
C6
C7
C1
C2
C3
C4
C5
C6
C5
P-125
P-121
