Part IV
Instrument-Specific System Exclusive
Messages
11 Format
This section explains the format of the Instrument-specific System Exclusive Messages. See “V Parameter
List” and for information about how parameter sets actually are transferred.
11.1 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
In addition to parameters being used as device setting values, some parameters act as commands
when received by the Instrument and as device status information when sent from the Instrument.
The following table shows the parameter category for each type of transfer.
Function Section Parameter Category Description
System System Commands to the Instrument, Instrument stats
Performance Controller Spec Global settings, settings of each music engine
Sound Generator Patch Sound source common settings (system effects, mas-
ter settings, etc.)
11.2 Basic Message Structure
”Individual 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 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 Depends on act) 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
11.3 Format of Each Field
11.3.1 SX : System Exclusive message Status
Format: 11110000B (F0H)
This is the System Exclusive Message status byte established by the MIDI standard.
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