Logic Pro 9 User Manual - Help Library - Apple

The corresponding SysEx message is displayed and the MIDI In button turns off
automatically.
A second way of entering SysEx messages in the SysEx fader window is to type the SysEx
string into the Event List. (Consult your MIDI device manual for SysEx documentation.)
To manually enter SysEx strings
µ Click the Create button, then click the SysEx button.
A generic SysEx message appears.
• The first data byte in the top line (directly after the word SysEx in the Num column) is
the manufacturer’s ID. This may be several data bytes long (as there are more than 128
manufacturers of MIDI devices).
• The manufacturer’s ID is usually followed by a device type ID, an individual device ID,
a data type ID (which could be several bytes) and, if necessary, the number of the
multi-timbral sub-channel, and the identification number(s) of the sound parameters
plus the value of the sound parameter. There are no uniform standards that apply here.
• Data bytes are normally input as decimal numbers. To enter them in hex, place a $ in
front of values when you type them. Choose View > SysEx in Hex Format to see all
values in hexadecimal.
• The last data byte (the EOX indicating the end of the SysEx message) is entered
automatically by Logic Pro. The number of data bytes in the SysEx message can be
decreased or increased by clicking the plus and minus symbols before and after the
word .
Chapter 37 Environment Objects Reference
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