Casio AP-220 Implementation Manual

Also see for CELVIANO AP-220: User guide

Casio AP-220 Implementation Manual Manual pdf 28 page image

28Part IVInstrument-Specific System Exclusive Messages16 FormatThis section explains the format of the Instrument-specific System Exclusive Messages. See “Part V Parameter List” forinformation about what type of data can actually be sent.16.1 Message ClassificationsBasically, the operation that corresponds to Instrument-specific system exclusive messages is parameter data transfer. Thefollowing 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 valueIn addition to parameters being used as device setting values, some parameters act as commands when received by theInstrument and as device status information when sent from the Instrument.The following table shows the parameter category for each type of transfer.16.2 Basic Message StructureSince Instrument-specific System Exclusive messages are sent and received on an individual parameter basis, the IndividualParameter Transfer method is used, and a number of message types are provided to suit specific operations. The field inthe SysEx message that specifies the message type is the action (act) field. The format of the “body” part of the messagedepends on the “act” value.The table below shows the body format for each action of Instrument-specific system exclusive messages. An actual messageconsists of the items indicated by “Y”, from left to right.FunctionSection Parameter Category DescriptionSystem System Commands, Instrument statusSetup Instrument basic settingsSound Generator Patch Sound source common settings (system effects, mastersettings, etc.)Sound source part settings (tone selection, mixing,tuning, etc.)Tone Tone parameter, DSP settingsScale Tune Scale Tune TableMusic Player Music Library User song dataact SX MAN MOD dev act body (Depends on act.) EOXcat mem pset blk pkt prm idx len dataIPR Y Y Y Y Y Y Y Y Y Y Y Y Y - YIPS Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y