Loopback Detection - RME Audio Fireface UFX User Manual

Mackie Control Protocol
The stand-alone operation supports the following Mackie Control surface elements*:
*Tested with Behringer BCF2000 Firmware v1.07 in Mackie Control emulation for Steinberg mode.
Element:
Channel faders 1 – 8
V-Pots 1 – 8
pressing V-Pot knobs
CHANNEL LEFT or REWIND
CHANNEL RIGHT or FAST FORWARD
BANK LEFT or ARROW LEFT
BANK RIGHT or ARROW RIGHT
ARROW UP or Assignable1/PAGE+
ARROW DOWN or Assignable2/PAGE-
STOP
EQ
MUTE Ch. 1 – 8
SELECT Ch. 1 – 8
REC Ch. 1 – 8
F1 – F6
Additionally the following functions are available via simple MIDI notes on MIDI channel 1:
Dim: 5D / 93 / A 6
Setup 1: 36 / 54 / #F 3
Setup 2: 37 / 55 / G 3
Setup 3: 38 / 56 / #G 3
Setup 4: 39 / 57 / A 3
Setup 5: 3A / 58 / #A 3
Setup 6: 3B / 59 / B 3
Loading the Setups stored in the device enables a quick configuration change of the UFX. With
this any possible operation state can be activated by the push of a button at any time.

30.7 Loopback Detection

The Mackie Control protocol requires feedback of the received commands, back to the hard-
ware controller. So usually TotalMix will be set up with both a MIDI input and MIDI output. Un-
fortunately any small error in wiring and setup will cause a MIDI feedback loop here, which then
completely blocks the computer (the CPU).
To prevent the computer from freezing, TotalMix sends a special MIDI note every 0.5 seconds
to its MIDI output. As soon as it detects this special note at the input, the MIDI functionality is
disabled. After fixing the loopback, check Enable MIDI Control under Options to reactivate the
TotalMix MIDI.
84
Meaning in Fireface:
volume
pan
pan = center
move one channel left
move one channel right
move eight channels left
move eight channels right
move one row up
move one row down
Dim Main Out
Master Mute
Mute
Select
select output bus (current submix)
load Setup 1 - 6
User's Guide Fireface UFX © RME