MIDI Operation
Lexicon
ACTIVATING BYPASS OR TAP FUNCTIONS
The unit can recognize MIDI Program Change messages 100 to 127 (101 to 128 on some MIDI devices) for activating Bypass or Tap functions.
To assign a Program Change message to the Bypass or Tap controls:
1.Simultaneously press the Store and Tap buttons to activate Learn mode.
2.Press the desired front panel button - Bypass or Tap. The front panel display will indicate the current patch on the selected control.
3.Send the MIDI Program Change message to the MPX 550. The front panel display will indicate the new patch on the control, and "Stored" will appear briefly in the message area.
4.Press the Store button to commit the assignment.
5.Simultaneously press the Store and Tap buttons to deactivate Learn Mode.
Some MIDI controllers do not allow repeated Program Change messages to be sent with a single button. To assist these controllers, the unit also recognizes the next highest Program Change message with each Program Change message it learns for Bypass and Tap. For instance, if Program Change 20 is learned as the source for Bypass, Program Change 21 will also control Bypass functions. To avoid conflicting Bypass and Tap assignments, leave a space between the assignments of these two buttons.
CONTINUOUS CONTROLLERS
The unit recognizes Pitch Bend, AfterTouch, and MIDI Continuous Controllers 1 to 31 and 33 to 119.
To learn a Continuous Controller:
1.Simultaneously press the Store and Tap buttons to activate Learn mode.