System Messages; Active Sensing; System Exclusive Message; Universal Realtime System Exclusive Message - Casio AP-500 Implementation Manual

Part III

System Messages

14

Active Sensing

Format
Message Format: FEH
Send
This message is never sent.
Receive
Once this message is received, the Active Sensing mode is entered. If no MIDI message is received for a specified amount
of time, voices being sounded by the Instrument's sound source are released, the controller is reset, and the Active Sensing
mode is exited.
15

System Exclusive Message

Format
Message Format: F0H....F7H
The Instrument sends and receives standard universal system exclusive messages, and system exclusive messages that have
Instrument-specific formats.
15.1

Universal Realtime System Exclusive Message

Format
Message Format: F0H 7FH....F7H
15.1.1

Master Volume

Format
Message Format: F0H 7FH 7FH 04H 01H llH mmH F7H
ll: Value LSB (Note1)
mm: Value MSB (Note1)
Note 1:
The setting value matches the value that is sent and received.
Send
This message is never sent.
Receive
Receipt changes the Master Volume parameter. Note that the Master Volume parameter cannot be changed with an Instrument
operation.
21