Yamaha DX21 Recording Equipment User Manual


 
Function s only on MSB data:
MSB
00000000
01000000
01111111
Lowest value
Center value
Highest value
4-1-2. Channel Mode Message
Status
1011nnnn
0ccccccc
0vvvvvvv
n=channel no.
a) Recived whether MIDI CH INFO is ON or OFF
C=123
V=0
All notes OFF
b) Received only when MIDI CH INFO is ON
C=126
C=127
V=1
V=0
MONO mode ON
POLY mode ON
4-2. SYSTEM INFORMATION
4-2-1. System Real-Time Message
Active sensing
Status
11111110
Sensing begins when this code is received once. If status and data are not received
within
300
milliseconds
the
MIDI
receive
buffer
will
be
cleared
and the currently
output
note
will
be turned OFF.
4-2-2. System Exclusive Message
(1) parameter Change (swithch mode)
Status
ID no.
Substatus/ch. no.
Parameter group no.
Switch no.
Data
EOX
11110000
01000011
0001nnnn
00001000
0mmmmrnmm
0ddddddd
11110111
n=channel no.
d=0:OFF, 1~127:ON
All panel swithces are controlled. The switch numbers are arranged as shown in
the illustration below. Receiced only when MIDI SYS INFO is ON.
(2) Parameter Change
The format is the same as the transmitted parameter change data. Received only
when MIDI SYS INFO is ON. Permits changing voice and function parameters
while the EDIT mode is active. It is also possible to change modes: PLAY, EDIT,
etc. The parameter no. and data received are shown in voice parameter table 5-2
and function parameter table 5-3.
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