Yamaha DX21 - Page 13

DX21
Function s only on MSB data:
MSB
00000000
01000000
01111111
4-1-2. Channel Mode Message
Status lOHnnnn
Occccccc
Ovvvvvvv
a) Recived whether MIDI CfH INFO is ON or OFF
C=123 V=0 All notes OFF
b) Received only when MIDI CH INFO is ON
C=126 V=1 MONO mode ON
C=127 V=0 POLY mode ON
Lowest value
Center value
Highest value
n=channel no.
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
Switch no.
Data
EOX
11110000
01000011
0001nnnn
00001000
Ommmmmmm
Oddddddd
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.
1 2
DX21