MIDI Implementation

Part III

System Message

9 Active Sensing

Message Format: FEH

Transmit 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 this Instrument’s sound source are

released, the controller is reset, and the Active Sensing mode is exited.

10 System Exclusive Message

Message Format: F0H iiH ddH....F7H

ii: ID Number

dd: Device ID

The Instrument sends and receives standard universal system exclusive messages, and system exclusive

messages that have Instrument-sp eciﬁc formats.

ID Number The ID numbers handed by this Instrument are shown below.

ID Number ID Name

44H Casio Computer Co. Ltd

7EH Non Real Time System Exclusive Message

7FH Real Time System Exclusive Message

Device ID The device ID is used mainly for individual control of multiple devices. When a System

Exclusive message is sent, the sending device sends messages that include a value that matches the

device ID of the sending device. When a System Exclusive message is received, the receiving device

receives only messages that include a value that matches the receiving device ID. The device ID 7FH is

a special value, and receipt is always performed whenever the device ID of either the receiving device

or the message is 7FH. MIDI Device ID is one of Spec Parameter and can be changed by the System

Exclusive Message. Device ID of MIDI System Exclusive Message in this case should be sent is set to

7FH.(Initial Value:7FH)

10.1 Universal Real Time System Exclusive Message

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

dd: Device ID