Yamaha PSS A50 MIDI Reference Pssa50 En Mr A0

User Manual: Yamaha PSS-A50 MIDI Reference

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DIGITAL KEYBOARD
CLAVIER NUMÉRIQUE
TECLADO DIGITAL

MIDI Reference
MIDI-Referenz
Référence MIDI
Referencia MIDI

EN

MIDI Functions
The explanations here cover the settings necessary for performing MIDI communication. For instructions on making these settings,
refer to page 12 in the Owner’s Manual.
NOTE
For instructions on how to connect this instrument to a computer, refer to the page 6 in the Owner’s Manual.

MIDI Out Channel Selection
In order to perform MIDI communication between this instrument and a computer, it is necessary to
match the corresponding MIDI out channel. By setting the MIDI out channels on this instrument, the setting of the keyboard or Arpeggio sequence or the program change can be transmitted over the channel
number corresponding to a specified channel on the computer.
Transmit data and Channel settings
The data in the list below are transmitted over the channel number(s) automatically set based on the
transmit channel for the keyboard Voice.
Keyboard Voices

Setting range: 01–16, oFF
Default setting: 01

Arpeggio sequence

Keyboard Voices channel number +1

Keyboard performance recorded to
this instrument

Keyboard Voices channel number +2

Arpeggio sequence recorded to this
instrument

Keyboard Voices channel number +3

NOTE
Panel settings (Voices, etc.) of this instrument will not be affected by MIDI messages received from a computer.
NOTE
This instrument cannot play back MIDI
data (received from a computer) that
includes Voices that are incompatible with
this instrument.

NOTE
• Selecting the next channel number from channel 16 returns to channel 1.
• No data is transmitted if the transmit channel for the keyboard Voice is set to “oFF.”
• For instructions on recording to this instrument, refer to page 10 in the Owner’s Manual.

Local Control ON/OFF
“Local Control” refers to the fact that, normally, the keyboard of the instrument controls its internal tone generator,
allowing the internal 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 internal Voices, but the appropriate MIDI information is still transmitted via the 5V DC / USB TO HOST terminal when notes are played on the keyboard.

Program Change ON/OFF
The information related to Voice changes is called “program change” in MIDI. Transmitting and receiving program change messages
can be enabled or disabled as desired on this instrument. For example, if the relevant transmit and receive parameters are set to on,
Voice change information in this instrument can be transmitted to or received from a computer.
(However, the Voice as played from the keyboard is maintained and does not change.)

Control Change ON/OFF
Information related to non-note expressive changes is called “control change” in MIDI. Transmitting and receiving control change
messages can be enabled or disabled as desired on this instrument. For example, if the relevant transmit and receive parameters are set
to on, performance information on this instrument can be transmitted to or received from a computer. (However, the performance information from the instrument is maintained and does not change.)

2

PSS-A50 MIDI Reference

MIDI Data Format
1 By default (factory settings) the instrument ordinarily functions as a 16-channel multi-timbral tone generator, and incoming data does not affect the panel voices or panel settings.
However, the MIDI Master Tuning affects the panel voices and
recorded data.
2 Exclusive

F0H, 7EH, 7FH, 09H, 01H, F7H
• This message automatically restores all default settings for
the instrument, with the exception of MIDI Master Tuning.
NOTE
This instrument does not support the GM format.


F0H, 7FH, 7FH, 04H, 01H, ll, mm, F7H
• This message allows the volume of all channels to be
changed simultaneously (Universal System Exclusive).
• The values of “mm” is used for MIDI Master Volume. (Values for “ll” are ignored.)


F0H, 43H, 1nH, 27H, 30H, 00H, 00H, mm, ll, cc, F7H
• This message simultaneously changes the tuning value of all
channels.
• The values of “mm” and “ll” are used for MIDI Master Tuning.
• The default value of “mm” and “ll” are 08H and 00H,
respectively. Any values can be used for “n” and “cc”.
3 When the recording or playback of the recorded phrase is
started, an FAH message is transmitted.
When recording or playback of the recorded phrase is stopped,
an FCH message is transmitted.
4 Local ON/OFF
 Bn, 7A, 7F
 Bn, 7A, 00
• Value for “n” is ignored.

Precautions when Using the 5V DC / USB TO
HOST Terminal
When connecting the computer to the 5V DC / USB TO HOST terminal (page 6 in the Owner’s Manual), make sure to observe the following points to avoid freezing the computer and corrupting or losing the data.
• Use an A-micro B type USB cable of less than 3 meters. USB 3.0 cables cannot be used.
• Execute the following before turning the power to the instrument on/off or plugging/unplugging the USB cable to/from the 5V DC /
USB TO HOST terminal.
• Quit any open application software on the computer.
• Make sure that data is not being transmitted from the instrument. (Data is transmitted only by playing notes on the keyboard or
playing back a song.)
• While the computer is connected to the instrument, you should wait for six seconds or more between these operations: (1) when turning the power of the instrument off then on again, or (2) when alternately connecting/disconnecting the USB cable.
If the computer or the instrument freezes, restart the application software or the computer OS, or turn the power to the instrument off
then on again.

PSS-A50 MIDI Reference

3

MIDI Implementation Chart
YAMAHA

[ Digital Keyboard ]
Model PSS-A50 MIDI Implementation Chart
Transmitted

Recognized

Date: 23-April-2019
Version: 1.0
Remarks

Function...
Basic
Channel

Default
Changed

1 - 16
1 - 16

1 - 16
x

Mode

Default
Messages
Altered

3
x
**************

3
x
x

Note
Number

0 - 127
: True voice **************

0 - 127
0 - 127

Velocity

Note ON
Note OFF

o 9nH,v=1-127
x 9nH,v=0

o 9nH,v=1-127
x

After
Touch

Key’s
Ch’s

x
x

x
x

o

o 0 - 24 semi

o
o
x
o
x
x
o
o
x
o
x
o

o
o
x
o
o
o
o
o
o
o
o
o

o 0 - 100
**************

o 0 - 127

o

o

x
x
x

x
x
x

System
: Clock
Real Time: Commands

o
o

x
x

:All Sound Off
Aux :Reset All Cntrls
Mes- :Local ON/OFF
sages:All Notes Off
:Active Sense
:Reset

o
o
x
o
o
x

o(120,126,127)
o(121)
o(122)
o(123-125)
o
x

Pitch Bend

Control
Change

Prog
Change

0,32
1,5,7,11
10
6
38
64
65
71,72,73,74
84
91,93
96,97
100,101

: True #

System Exclusive

Common

: Song Pos.
: Song Sel.
: Tune

Mode 1 : OMNI ON , POLY
Mode 3 : OMNI OFF, POLY

Mode 2 : OMNI ON ,MONO
Mode 4 : OMNI OFF,MONO

Bank Select
Pan
Data Entry (MSB)
Data Entry (LSB)
Sustain
Portamento Switch
Sound Controller
Portamento Control
Effect1,3 Depth
RPN Inc,Dec
RPN LSB,MSB

o : Yes
x : No
Manual Development Group
©2019 Yamaha Corporation
Published 07/2019 PO-A0

4

PSS-A50 MIDI Reference



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