Casio MZ-X300 - Instrument-Specific System Exclusive Messages; Format; Message Classifications; Basic Message Structure

Part IV
Instrument-Specific System Exclusive
Messages
13 Format
This section explains the format of the Instrument-specific System Exclusive Messages. See “V Parameter
List” for information about how parameter sets actually are transferred.
13.1 Message Classifications
Basically, the operation that corresponds to Instrument-specific system exclusive messages is parameter
data transfer.
The following operations can be performed from an external device using this parameter transfer
message.
• Modification of an individual Instrument parameter
• Import of an individual Instrument parameter value
13.2 Basic Message Structure
”Indivisual Parameter Transfer”(single parameter transmission/reception) is a format of instrument-
specific system exclusive message, which comprise a number of different messages for each operation.
The field in the system exclusive message that specifies the message type is the action (act) field.
The format of the body part of the message depends on the act value.
The table below shows the body format for each action of Instrument-specific system exclusive mes-
sages. An actual message consists of the items indicated by Y, from left to right.
SX MAN MOD dev act body (act Dependent part) EOX
cat mem pset blk prm idx len data
IPR Y Y Y Y Y Y Y Y Y Y Y Y - Y
IPS Y Y Y Y Y Y Y Y Y Y Y Y Y Y
13.3 Format of Each Field
13.3.1 SX : System Exclusive message Status
Format: 11110000B (F0H)
This is the System Exclusive Message status byte established by the MIDI standard.
13.3.2 MAN : Manufacturer’s ID
Format: 01000100B (CASIO = 44H)
Indicates this Instrument’s manufacturer ID.
26