JLCooper 4/100 USB FaderMaster - Manual (Page 22)

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Note: Since there are only four physical faders, reception
of a fader position command for a fader not selected on the
current bank will be stored internally until the operator has
made a bank change.
Touch
When a fader knob is touched or released, the FaderMaster 4/100
sends the following message:
Bnh 4Ah 0xxxxxxxx
n 0 to 7, corresponding to faders 1 thru 8
xxxxxxx 7Fh when the fader is touched and
00h when the fader is released
Buttons/LEDs:
The function select buttons determine the behavior of the buttons
above the faders. In the FaderMaster 4/100, there are 4 buttons
that allow the user to directly select the function for the buttons
above the faders. An LED indicates the function selected for the
buttons above the faders.
When a button above the fader is touched or released, the
FaderMaster 4/100 sends the following message:
Bnh 0xxxxxxx 0yyyyyyy
n 0 to 7, corresponding to faders 1 thru 8
xxxxxxx button function (see table on next page)
yyyyyyy 7Fh when the button is pressed and
00h when the button is released