System Exclusive Implementation
MIDI System Exclusive communication allows a user to control a device directly through MIDI in a very powerful and flexible manner. Much
care has gone into creating and testing this documentation but Digitech can not guarantee 100% accuracy, nor can Digitech be held responsible
for programs and data lost in a product from System Exclusive Information use.
A working knowledge of the MIDI Version 1.0 Detailed Specification can be useful while implementing any manufacturer's SysEx commands.
For a copy of the MIDI spec contact:
MIDI Manufacturers Association
5316 West 57th Street
Los Angeles, California 90056 USA
(213) 649-6434
It is a good practice to back up any user programs and/or user algorithms in the device before you begin to work with SysEx commands due to
the fact that incorrect commands can produce unexpected results. Should you encounter any discrepancies between this documentation, and a
Digitech S-DISC II™ MIDI, product please feel free to contact us at:
Digitech
Attn: Product Management Dept.
8760 South Sandy Parkway
Sandy, Utah 84070 USA
(801) 566-8800
http:///www.digitech.com
MIDI Basics
MIDI Channels
: The RP-20 Valve can be set so that it communicates on 1 of 16 discrete MIDI channels. Some devices may also be set up to
transmit or receive information on all channels in an Omni mode or to none of the channels in a Disabled mode.
Program Changes
: When the RP-20 Valve is set to communicate on one or all of the MIDI channels, it will recognize a Program Change
command. If the number is legal (e.g. within the device’s range of selectable programs) the Digitech device will respond by changing to the
new program. MIDI sends Program Changes 0 through 127. Digitech devices begin their program numbering with 1, thus Program Change 0
will select program 1. The RP-20 Valve also allows the user to ‘re-map’ the Program Change commands so that Program Change 0 could call
program 135, if so desired.
Continuous Controllers
: A MIDI Continuous Controller may be ‘Linked’ to nearly any available parameter in the RP-20 Valve. CC links
(Modifiers) and their ranges are treated uniquely in each program with the assignments being saved only if they are stored as part of the
program.
Channel Pressure
: DigiTech products treat Channel Pressure as simply another type of Continuous Controller which can be linked to
parameters for control.
Section - 6 Appendix
RP-20 Valve
User Guide
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Содержание RP-20 VALVE
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