All Sound Off (78H); Reset All Controllers (79H); Mode Message; All Notes Off (7Bh) - Casio CTK-2000 Implementation Manual

9.13

All Sound Off (78H)

Format
Message Format: BnH 78H 00H
n: MIDI Channel Number
Send
Sent when Local is set to OFF on the Instrument.
Receive
Receipt stops all voices that are sounding.
9.14

Reset All Controllers (79H)

Format
Message Format: BnH 79H 00H
n: MIDI Channel Number
Send
Sent when MIDI send related settings are changed on the Instrument.
Receive
Receipt initializes each performance controller.
10

Mode Message

10.1

All Notes Off (7BH)

Format
Message Format: BnH 7BH 00H
n: MIDI Channel Number
Send
Sent when MIDI send related settings are changed on the Instrument, or when auto play is stopped, etc.
Receive
Receipt of any of this message releases the currently sounding voice (same as releasing the keyboard key).
10.2

Omni Off (7CH)

Format
Message Format: BnH 7CH 00H
n: MIDI Channel Number
Send
This message is never sent.
Receive
Receipt of this message performs the same operation as when All Notes Off is received.
13