Instruction Manual

902 External Devices
Cakewalk Generic Surface Plug-in
bytes, with the low byte first. The Sysx Low Byte First option has the
following structure: F0 ? LO HI ? F7.
• Starts With—Fill in the string that your controller/surface sends in Sysx
messages that precedes the significant data.
• Ends With—Fill in the string that your controller/surface sends in Sysx
messages that follows the significant data.
• Sysx Trigger—Triggered targets (play, mute, solo, etc.) are enacted by
using a Sysx trigger, where the user simply types the entire Sysx
message F0 ?? F7 that will trigger the action.
• Trigger Message—The exact Sysx message, in the form of F0 ? ? F7,
for the Sysx Trigger option.
Note: The Sysx Single Byte, Sysx High Byte First, and Sysx Low Byte First
options assume that the Sysx message will be interpreted as a value to
control continuous parameters such as Volume, extracted from somewhere
in the middle of the message. That is why those three options are
unavailable for “triggered” targets, like play, record, mute, solo, move 1 left,
move 1 right, etc.
MIDI Message Interpretation
A special interpretation of a MIDI message is commonly used in the
following two cases:
• Literally/Toggle—The property page interprets almost all MIDI
messages as either literal values or toggle-type values, so most of the
time this button is checked. A fader usually sends out a stream of
different messages that are different for each position of the fader. The
values of these messages are used “literally” to make timely changes in
a continuous parameter such as Volume. The other common
interpretation of a MIDI message is that it is meant to “toggle” a control
such as a Mute button on and off. The property page interprets almost
all MIDI messages as one of these two types of message.
• Increment/Decrement—This option is valuable if you want to use a
button or knob that can only send two different values to control a
continuous parameter, such as Pan or Volume (see Conserving Knobs
and Buttons).
• Plus+—The value that causes the desired parameter to increase
by 1.
• Minus-—The value that causes the desired parameter to decrease
by 1.