Reset All Controllers (79H); All Notes Off (7Bh); Omni Off (7Ch); Omni On (7Dh) - Casio CTK-3400SK Handbuch

Receive Receipt stops all voices that are sounding.
10.2

Reset All Controllers (79H)

Message Format:
n:
Send Sent when MIDI send related settings are changed.
Receive Receipt initializes each performance controller.
10.3 All Notes Off (7BH)
Message Format:
n:
Send Sent when MIDI send related settings are changed, or when auto play is stopped, etc.
Receive Receipt releases (key release) all voices that are sounding.
10.4 Omni Off (7CH)
Message Format:
n:
Send This message is not sent by this Instrument.
Receive Receipt performs the same operation as when All Notes Off is received.
10.5

Omni On (7DH)

Message Format:
n:
Send This message is not sent by this Instrument.
Receive Receipt performs the same operation as when All Notes Off is received.
10.6

Mono (7EH)

Message Format:
n:
Send This message is not sent by this Instrument.
Receive Receipt performs the same operation as when All Notes Off is received.
BnH 79H 00H
MIDI Channel Number
BnH 7BH 00H
MIDI Channel Number
BnH 7CH 00H
MIDI Channel Number
BnH 7DH 00H
MIDI Channel Number
BnH 7EH 00H
MIDI Channel Number
12