Euphonix CS Series Manual page 6

Christian Dolenga Euphonix MIDI capabilities Revision 1
2.3.2. Controlling external devices or your DAW (PlugIns) from Euphonix CS
From F3 (System) -> F4 (MIDI) -> F2 (Out) you get to the remarkably shorter list of
possible objects on the console that could control your external devices or your DAW
(or plugins therein). Only the faders and mute buttons can send MIDI CC data. To be
exact, not the faders and mute buttons themselves, but the Group Masters they
represent. If I wanted the lower fader of channel 21 to send CC data, then I first would
navigate in that list to "L GRP MASTR", hit "Enter" on the DSC keypad, navigate to my
copy (MIDI Mode set to "OUT", which means "enabled"), set "Console Chan" to 21 and
leave "MIDI Chan" on "1" and "Control Num" on "99" for now.
Now I turn "Group Mode" ON (hit "Esc" on DSC keypad until I arrive at the top level,
then F4 (Grps) -> F4 (IND to MSTR)) and hit the attention key of channel 21 lower fader
to set it as Group Master.
Et voilá: It's sending a smooth continuous stream of values from 0 to 127!
If we switch to "14bit" we are not given the full 16384 values though, because upon
inspecting the data stream, we discover that the the LSB (least significant byte) of the
CC pair only switches between 00 and 40, and the MSB (most significant byte) ranges
from 01 to 7E. If we count that upwards, it looks like this:
01 00
01 40
02 00
02 40
03 00
03 40
...
7E 00
That gives us effectively 252 values, so basically "just" double the precision. Well, you
gotta keep traffic low, I guess...
With the mute buttons it's another story: The button's "on" state sends 7F (127) and
the button's "off" state sends 7C (124). If we invert that button from within our list,
then the "on" state sends 00 (00), and the "off" state sends 03 (03). As DAWs and
other gear don't usually interpret such small value discrepancies as on/off states
(usually a CC is considered "on" when its value is anywhere from 64 to 127, and "off"
from 63 down to 0, and notes are considered "on" with velocities from 1 to 127, leaving
only velocity 0 as "note off" command), we hereby encounter our first necessity to use
a MIDI translator as a middle man. Either your DAW has the capability to transform or
translate an incoming MIDI message to your needs, or you need a dedicated program
for that.
I am very pleased with "Bome MIDI Translator Pro" for that (from here on called
BMTP), as it allows me to have several presets for several tasks, that I can also turn on
and off via SysEx commands (or MIDI notes, or CC messages, or...).