Apple Logic Pro 7 - Manual (Page 256)

256 Chapter 5 The Environment
For more on Meta events 124 to 127, read the section on Remote Controlling the
Condition and Operation Values (see “Transformer Object” on page 224).
Goto Marker /Screen Set/Song
Selecting New > Fader > Special > Goto Marker creates a fader which allows you to enter
a marker number (Meta event 51); the SPL then moves instantly to the marker of that
number. Markers are numbered sequentially, throughout the song, even if you have
renamed them (from the default numbers assigned when each marker was created).
Selecting New > Fader > Special > Goto Screenset creates a Screenset fader (Meta event
49), allowing you to switch to the Screenset number chosen with the fader.
Meta event 50 has no effect within Logic, but you can use it to switch between songs
on an external hardware sequencer.
Meta event 52 allows you to interrupt playback at any position.
To make the most efficient use of these faders, we recommend that you limit the value
range to suit your particular circumstances. As an example, to limit the faders to the
number of Screensets, songs, or markers you’re actually using.
SysEx Faders
Overview
The SysEx fader type (the last selection on the fader definition menu) is slightly
different than the other fader types. It allows you to create a list of MIDI events that will
be sent whenever the fader is moved or remote controlled. You can enter the messages
to be sent in a window that resembles Logic’s Event editor, except that time positions
serve only to control the order in which the events in the list are sent—they are not
sent at specific times, or with any delay between them.
The SysEx fader type was originally intended for sending MIDI System Exclusive (SysEx)
messages—messages that are exclusive to individual manufacturers’ MIDI devices.
There are a number of built in features in the SysEx fader’s window (see below) that
facilitate the creation of SysEx messages. SysEx faders can be used for any kind of MIDI
event, and are therefore very handy for sending ordered batches of messages, such as
mixer or control panel snapshots—with one click of the mouse.
126 Set transformer operation maximum (bottom) parameter, if any. (This applies to all
operations not set to Thru).
127 Set transformer operation minimum (top) parameter, if any. (This applies to all
operations not set to Thru).
Meta Event Controlled Logic function