mackie_control_protocol.md

Mackie Control Protocol

A deep dive into the DAW remote control beast.

TODO: [TOC]

Foreword

Everyone knows it. The Mackie Control is a very widespread remote control protocol based on a clever use of the not less widespread MIDI standard. Unfortunately the specification is proprietary and licensed to whom wants to interface their software or controller. Furthermore, the controllers themselves are quite pricey, so I decided to dig it and use my iPad as a controller. This is the results of a few months of research and reverse engineering.

Further independent research and reverse engineering has been made by Raphaël Doursenaud (@rdoursenaud) using original hardware (A Mackie Control Universal Pro running the v3.0.0 firmware and a BabyHUI) together with its own MIDI Explorer tool to validate findings and complete some missing and/or grey areas.

Before you start reading, please note that since the protocol is MIDI (v1) based, you have to know MIDI very, very well to understand most of it. Check out the now free standard at https://midi.org if you're unfamiliar.

History

A brief history of the device helps understand what shaped its design and the associated protocol(s).

Mackie HUI

1997

• Protocol: HUI (Human User Interface)
• Interface: MIDI on 5-Pin DINs or a serial RS232/422 port.
• Specs:
  • 8 channel strips with dedicated:
    • Stereo LED meter
    • Rotary encoder with LED ring
    • REC RDY/INSERT/V-SEL/AUTO/SOLO/MUTE/SELECT button
    • 4 character LED dot matrix display (Resolution?)
    • 100mm touch-sensitive fader
  • 40 × 2 VFD with:
    • 4 rotary encoders with LED ring + 1 without
  • Time Code/BBT 7-segment display
  • Numeric keypad
  • Select assign 4 character LED dot-matrix display (Resolution?)
  • Plethora of function buttons
  • Transport section
    • Jog Wheel
    • Navigation buttons
  • 2 relays
  • Integrated analog circuits:
    • 2 + 1 talkback MIC preamplifiers
    • 3 stereo channels monitoring controller
    • talkback management with embedded MIC
  • Power: 60 W
  • Dimensions:
    • Width: 572 mm (22.5")
    • Depth: 523 mm (20.6")
    • Height: 165 mm (6.5")
  • Weight: 16.8 Kg

The first "affordable" widely adopted motorized touch-sensitive control surface. Made in cooperation with and specifically for Digidesign's (Now Avid) popular DAW: Pro Tools.

Later declined into the cost-reduced and feature-cut BabyHUI (2002) and the large & mighty D8B.

The popularity of the device means that a lot of other software progressively decided to implement its protocol including popular DAWs and Video Editing packages. It was deemed the Universal DAW controller for a time. Which makes it still relevant today despite its flaws.

https://en.wikipedia.org/wiki/Human_User_Interface_Protocol
https://www.soundonsound.com/reviews/mackie-hui

Emagic Logic Control

2002

• Protocol: LCU (Logic Control Unit)
• Interface: MIDI on 5-Pin DINs
• Specs:
• 55 characters × 2 lines backlit LCD (Characters: 5 × 8 dot-matrix)
• 2-digit 7-segment mode display
• 10-digit 7-segment timecode display
• 8 channel strips with dedicated:
  • Rotary encoder with LED ring (V-POT)
  • Signal present LED
  • REC/SOLO/MUTE/SELECT buttons with LED
  • 100mm touch-sensitive Penny & Gilles fader with 10-bit resolution
• Plethora of function buttons and LEDs
• Transport section with jog wheel
• External assignable:
  • 2 × foot switch
  • 1 × control pedal
• Dimensions:
  • Width: 441 mm
  • Depth: 444 mm
  • Height: 96 mm
• Weight: 5.05 Kg

Emagic decided to partner with Mackie to design a controller tailored for their up-and-coming DAW: Logic (Now known as Apple Logic Pro). This led to the release of the Logic Control which premiered the design and most of the features the modern Mackie Control sports to this day. The layout is clearly inspired from the HUI with the addition of a dedicated Master fader, removal of all the analog electronics functions and computer specific ports and simplification of the displays. The protocol, while clearly inspired by the HUI, departs a lot from it and has been largely optimized to reduce the bandwidth usage which plagued the HUI. The documentation is complete and awesome.

https://fr.audiofanzine.com/surface-de-controle-motorisee/emagic/Logic-Control/news/a.play,n.271.html
https://www.soundonsound.com/reviews/emagic-logic-v5-logic-control

XT

8 faders extension

MOTU Control?

Elusive controller made by Mackie exclusively for MOTU's DAW: Digital Performer.

Mackie Control

• Protocol: MCU (Mackie Control Unit)
• Interface: MIDI on 5-Pin DINs (and/or USB-MIDI compliant on the Pro variant)

Same hardware different protocol. Seems to be what prompted Emagic to release the protocol documentation.

2002/07

v1.x

https://fr.audiofanzine.com/surface-de-controle-motorisee/mackie/Control/news/a.play,n.559.html

v2.x: introduced HUI backwards compatibility

https://www.soundonsound.com/reviews/mackie-control-universal

2003

v3.x

A $99 firmware update for the Logic Control and Mackie Control that unified the product line and brought 3 modes:

• Mackie Control
• Logic Control
• HUI

https://fr.audiofanzine.com/surface-de-controle-motorisee/mackie/Control/news/a.play,n.1003.html

C4

Announced 2003 and finally released in 2006?

• 4 displays
• 32 rotary encoders
• Software controlled assignations (C4 Commander)

Ultimately a market failure?

https://www.soundonsound.com/reviews/mackie-c4

Universal

2003/09

Mackie later revised the design of its product to reflect the compatibility changes and added Universal to the branding. https://fr.audiofanzine.com/surface-de-controle-motorisee/mackie/control-universal/news/a.play,n.1074.html

Pro

2007

A facelift redesign with modernized components. Adds USB connectivity to the main unit with an integrated 3 ports MIDI interface for extensions. https://fr.audiofanzine.com/surface-de-controle-motorisee/mackie/Control-Universal-Pro/news/a.play,n.4187.html

2010

v4.0.0

Changed the faders from Penny and Giles (P+G) optical encoders to ALPS resistive.

https://fr.audiofanzine.com/surface-de-controle-motorisee/mackie/Control-Universal-Pro/news/a.play,n.13325.html

The Controller

This is what I focused on, that controller is meant to work with the Mackie Control Protocol and features pretty much everything the protocol can do.

• In Red is the display zone
• In Green is the mixing zone
• In Blue is the function zone
• in Yellow is the transport zone

We will dig into each zone with as many details as I could find.

General Behaviour

Number Representation

Before we start, I would like set a couple of writing style guidance.

We count from 0

As this document is meant to be a reference for implementation / programming guide, 0 will be out starting point.

• Arrays and tables first index is 0.
• 16 Midi Channels from 0 to 15
• 120 Midi Notes from C-1 (0) to B8 (119)

Decimal, Hexadecimal and Binary

• Decimal numbers are in plain text
• Hexadecimal numbers are in monospace / code style using the 0x prefix
• Binary numbers are in monospace / code style using the 0b prefix

i.e. the same number in the three representations: 127, 0x7F, 0b01111111

I will use upper-cased letters for hexadecimal numbers and lower cased letter when I want to denote a variable part.

i.e. the Note Off status message is 0b1000cccc or 0x8c where c denotes the MIDI channel.

Channel

Unless specified, all MIDI messages are sent on the first midi channel (0).

System Exclusive messages format (SysEx)

While most features are controlled using standard MIDI messages, some advanced features require the use of System Exclusive messages. System Exclusive messages are a standard facility provided by MIDI to allow manufacturers to extend the protocol.

While the MIDI specification requires vendors to publish their implementation for interoperability purposes, some, unfortunately, choose not to. Mackie chose the latter.

Fortunately, Emagic has extensive documentation of its Logic Control protocol which is a precursor to the MCU (See History). This is how we obtained the following messages and verified these are working appropriately in MCU mode.

The content of the message is the following (in hexadecimal, omitting the 0x prefix for readability):

F0 <Hdr> <Cmd> [<Prm>] F7

• 0xF0 at the start. Standard MIDI Start of System Exclusive (SOX) status byte.
• <Hdr>: Standard MIDI Header
• <Cmd>: Proprietary Command
• <Prm>: Proprietary Optional Parameters
• 0xF7 at the end. Standard MIDI End of System Exclusive (EOX) status byte. Together with SOX, these constitute MIDI System Exclusive message boundaries.

Header

Standard MIDI SysEx.

00 00 66 dd

• 0x00 0x00 0x66: 3-byte Manufacturer ID for Mackie Designs.
• dd : Device ID. 0x14 in most cases (Mackie Control).

Reference list of known Mackie Designs device IDs:

ID	Device
0x05	Mackie HUI (also BabyHUI and D8B)
0x10	Emagic Logic Control
0x11	Emagic Logic Control XT
0x14	Mackie Control (Universal) (Pro)
0x15	Mackie Control (Universal) XT (Pro)
?	Mackie Control (Universal) (Pro) C4
0x7F	/!\ Firmware update mode /!\ Omni?

Commands & Parameters

Mostly extracted from the Logic Control documentation which is a precursor to the MCU.

Code	Parameters	Parm. len. (bytes)	Direction (Device PoV)	Command	Test status
0x00		0	Received	Device Query	OK
0x01	ss ss ss ss ss ss ss cc cc cc cc	11 (7 + 4)	Transmitted Automatically at power-on and In reply to Device Query	Host Connection Query	OK
0x02	ss ss ss ss ss ss ss rr rr rr rr	11 (7 + 4)	Received	Host Connection Reply	OK
0x03	ss ss ss ss ss ss ss	7	Transmitted	Host Connection Confirmation	OK
0x04	ss ss ss ss ss ss ss	7	Transmitted	Host Connection Error	KO Displays « SECURITY UNLOCK FAILED SHUTTING DOWN » instead and refuses further messages!
0x05 .. 0x09	?		?	Undocumented
0x0A	tt	1	Received	Transport Button Click	OK
0x0B	ll	1	Received	LCD backlight saver	OK
0x0C	ff	1	Received	Touchless movable faders	OK
0x0D	?		?	Undocumented
0x0E	ii ts	2	Received	Faders touch sensitivity	OK
0x0F	0x7F	1	Received	Go Offline	KO. LC only?
0x10	yy .. [yy]	1 to 10	Received	Update TC/BBT display	KO. LC only?
0x11	yy [yy]	1 or 2	Received	Update assignment display	KO. LC only?
0x12	oo yy .. [yy]	2 to 113 (1 + 1..112)	Received	Update LCD	OK
0x13	0x00	1	Received	Firmware Version Request	OK
0x14	vv vv vv vv vv	5	Transmitted	Version Reply	OK
0x15 .. 0x17	?		?	Undocumented
0x18	xx [zz .. zz]		Received	Firmware update (Undocumented)
0x19 .. 0x1F	?		?	Undocumented
0x20	ii mm	2	Received	Channel meter mode
0x21	gg	1	Received	Global LCD meter mode	OK
0x22 .. 0x60	?		?	Undocumented
0x61		0	Received	Faders to minimum	KO. LC only?
0x62		0	Received	All LEDs off	KO. LC only?
0x63		0	Received	Reset
0x64 .. 0x7F	?		?	Undocumented

• ss: serial number (7 bytes ASCII text, non null-terminated)

• cc: challenge code (4 bytes)

• rr: response code (4 bytes). See algorithm below.

• tt: transport button click

  • 0x00 = no transport button click
  • 0x01 = transport button click (default)

• ll: backlight saver

  • 0x00 = LCD backlight off
  • 0x01..0x7F = LCD backlight on, with time out in minutes (default: 0x0F = 15 minutes)

• ff: touch-less

  • 0x00 = fader movements are only transmitted if the fader has been recognized as touched
  • 0x01 = fader movements are also transmitted if the fader has not been recognized as touched (e.g. with finger nail or pen)

• ii: fader strip ID (1 to 8: 0x00 to 0x07; Master = 0x08)

• ts: fader touch sensitivity (0x00..0x05; default: 0x03)

• yy: data. ASCII equivalents for display characters written from left to right, including line wrapping between upper and lower line. Up to 112 data bytes may be sent in one message.

• oo: display offset to write from:

  • 0x00 to 0x37 for the upper line
  • 0x38 to 0x6F for the lower line

• vv: version string (5 bytes ASCII text) e.g. V1.0

• mm: mode bit map in the form of (0b00000lps):

  • l: enable level meter on LCD
  • p: enable peak hold display (horizontal only)
  • s: enable Signal LED

• gg: lcd meter mode

  • 0x00 = horizontal
  • 0x01 = vertical

• xx: firmware update

  • 0x00: start
  • 0x01: data
  • 0x02: end

• zz: firmware update data. Format unknown yet.

  TODO: complete tests and research of the undocumented codes.

Response code algorithm

Challenge code bytes 1 to 4 as c[0]-c[3].
Response code bytes 1 to 4 as r[0]-r[3].

C-like pseudo code:

r[0] = 0x7F & ( c[0] + ( c[1] ^ 0x0A ) - c[3] );
r[1] = 0x7F & ( ( c[2] >> 4 ) ^ ( c[0] + c[3] ) );
r[2] = 0x7F & ( c[3] - ( c[2] << 2 ) ^ ( c[0] | c[1] ) );
r[3] = 0x7F & ( c[1] - c[2] + ( 0xF0 ^ ( c[3] << 4 ) ) );

Buttons, LEDs and Bangs

There are more details about each button and each functions down this document but there is a common behaviour to all buttons and LEDs. They send what I call a MIDI note bang. This is a MIDI Note On message immediately followed by the corresponding Note Off. The bang uses the velocity of the "Note On" message as a mean of describing the button / LED state. Maximum velocity (127 / 0x7F) is a button pressed or a LED turned on. Minimum velocity is a button released and or a LED turned off.

As a side note, this is to avoid a MIDI note overflow on the host. Imagine if it only used the Note On: a MIDI engine could try to keep track of all of them, waiting for the corresponding Note Off. This would build over time as we press more and more button until it runs out of memory. It's maybe not an issue anymore as MIDI engines are probably more clever than that and memory is widely available on computer now but it might have been a limitation at the time of designing this protocol. Remember, it's MIDI and we want to use existing technology with existing limitations.

In the rest of the document I will use the term Note Bang to describe that behaviour.

LED State	Velocity	Hex	Remarks
Off	0	0x00	Any even value
Blink	1	0x01	Any odd value except 0xF7
Solid	127	0xF7

Display Zone

LCD Screen

The LCD screen is a 2x55 characters LCD mapped to a 2x56 buffer. 112 characters in total of which 110 are actually displayed and 2 line wrapping characters are hidden (1 at the end of each line). It is controlled by System Exclusive messages from the host.

F0 <Hdr> 12 pp cc cc .. cc F7

• <Hdr>: SysEx header
• 0x12 is the LCD command
• pp is the location of the first character sent. This value range between 0x00 and 0x6F (0 to 111 in decimal).
• cc cc .. cc is a list of characters. the first one replace the character position pp, the second one replacing pp+1 etc...

Character codes are similar to ASCII characters but have a few custom symbols. See the full table in the appendix.

Assignment & Timecode Displays

It is composed of 12 (7-segments + dot) digits. These are controlled by a Control Change (0xB0) message sent by the host. Some DAWs use Channel 15 (the last one), others use Channel 0 (the first one). From right to left, CC number 64 (0x40) to 75 (0x4B) as such:

The Value field of the CC message control what to display:

0	Dot	ASCII
b7	b6	b5	b4	b3	b2	b1	b0

• Bit 7 is always 0 as per the MIDI standard
• Bit 6 is the Dot on/off toggle. (each 7-seg display has a dot)
• Bit 5-0 is the character to display. It supports the characters from 48 (0x30) to 95 (0x5F). Which is the range where alphanumeric characters are located in a standard ASCII table.

As Bit 6 is used for the Dot of the 7-segment display, characters from 64 (0x40) to 95 (0x5F) are apparently out of range but in fact, the 6th bit is simply ignored. Characters with ASCII code >= 64 (0x40) are stripped from there 6th bit ( or subtracted 64 ) and sent over.

A summary table of available characters is available in appendix

SMPTE, BEATS, Rude Solo

Those three LEDs are controlled by Note Bangs sent by the host.

LED	Note	Decimal	Hex
SMPTE	F8	113	0x71
BEATS	F#8	114	0x72
Rude Solo	G8	115	0x73

Mixing zone

This where the cool stuff happens and this is probably what you are here for.

Virtual Pot

Each track has a virtual pot. These are composed of:

• A clickable rotary encoder
• 11 surrounding LEDs, called ring
• 1 small LED underneath the encoder

Rotating vPots

The MCU sends Control Change messages to notify the host about an encoder being rotated. From CC number 16 (0x10) for the first channel strip to 23 (0x17) for the eighth channel strip.

The direction of rotation is represented using the Value field of the message as such:

• 0b00000001 means rotating clockwise
• 0b01000001 means rotating counter-clockwise

This looks very much like a 6bit integer and the 7th bit being a sign bit, this would translate to +1 for clockwise and -1 for counter-clockwise. There is a good chance that using greater values than +1 and -1 encodes the speed of rotation but I was unable to test it.

TODO: check acceleration encoding

Clicking vPots

Using a Note Bang ranging from G#1 (32, 0x20) for the first channel strip to D#2 (39, 0x27) for the eighth channel strip.

vPots LED Ring

the host sends Control Change messages to control the LED ring. From CC number 48 (0x30) for the first channel strip to 55 (0x37) for the eighth channel strip.

Again, the Value field is divided in a 4-bits control/value pair:

0	Led	Mode	Value
b7	b6	b5	b4	b3	b2	b1	b0

• Bit 7 is always 0
• Bit 6 is the on/off toggle of the little LED underneath the encoder.
• Bits 5 and 4 represent a Mode value
• Bits 3 to 0 represent the Value

The following table shows the correspondance between Mode, Value and the LED ring state.

	Mode 0b00	Mode 0b01	Mode 0b10	Mode 0b11
0x00	-----------	-----------	-----------	-----------
0x01	O----------	OOOOOO-----	O----------	-----O-----
0x02	-O---------	-OOOOO-----	OO---------	----OOO----
0x03	--O--------	--OOOO-----	OOO--------	---OOOOO---
0x04	---O-------	---OOO-----	OOOO-------	--OOOOOOO--
0x05	----O------	----OO-----	OOOOO------	-OOOOOOOOO-
0x06	-----O-----	-----O-----	OOOOOO-----	OOOOOOOOOO
0x07	------O----	-----OO----	OOOOOOO----	OOOOOOOOOO
0x08	-------O---	-----OOO---	OOOOOOOO---	OOOOOOOOOO
0x09	--------O--	-----OOOO--	OOOOOOOOO--	OOOOOOOOOO
0x0A	---------O-	-----OOOOO-	OOOOOOOOOO-	OOOOOOOOOO
0x0B	----------O	-----OOOOOO	OOOOOOOOOOO	OOOOOOOOOO

Rec, Solo, Mute, Select

All those buttons follow the Note Bang behaviour. Here is a summary of what note these are bound to

Button	1st channel	8th channel
REC	C-1 (0, 0x00)	G-1 (7, 0x07)
SOLO	G#-1 (8, 0x08)	D#0 (8, 0x0F)
MUTE	E0 (16, 0x10)	B0 (16, 0x17)
SEL	C1 (24, 0x18)	G1 (24, 0x1F)

Metering

This one is not shown on the illustration but exists in the standard. You can have one meter per channel which are displayed on the LCD.
In TouchMCU, these are presented as 12 LEDs red to green.

The meters are controller using Channel Pressure MIDI message (0xD0 sv).
The signal present LED is also triggered by this message.

The decay is automatic at a rate of about 300 ms per division.

The Value field of the Channel Pressure message is divided in a pair of 4-bits data (aka nibbles):

• s: The most significant nibble represents the channel strip ID from 0 to 7.
• v: The least significant nibble represents the state of the vu meter as such.

Value	Signal	LEDs in TouchMCU
0xsF	Clear overload	?
0xsE	Set overload	?
0xsD	100 % (> 0 dB)	?
0xsC	(0 dB)	Red (clip)
0xsB	(>= -2 dB)	Yellow
0xsA	(>= -4 dB)	Yellow
0xs9	(>= -6 dB)	Yellow
0xs8	(>= -8 dB)	Green
0xs7	(>= -10 dB)	Green
0xs6	(>= -14 dB)	Green
0xs5	(>= -20 dB)	Green
0xs4	(>= -30 dB)	Green
0xs3	(>= -40 dB)	Green
0xs2	(>= -50 dB)	Green
0xs1	(>= -60 dB)	Green
0xs0	0 % (< -60 dB)	All LEDs Off

Notes

The signal level mapping is host implementation dependant and can vary between DAWs.

On the hardware, the overload condition is only displayed when the global LCD meter mode is set to horizontal. It is denoted by a * on the end.

Example

Channel 7, 0dB:

D0 7C

Fader

Faders use the greater resolution of Pitch Bend messages for position and Note Bangs for fader touch notification.

Fader touch behaves exactly as buttons. when the fader is touched the "button" is pressed. Notes range from G#7 (104, 0x68) for the first fader to E8 (112, 0x70) for the Master fader (9th fader)

For the position, it uses the full 14 bits of the Pitch Bend Value component. 0 being all the way down, and 16383 being top of the roof.

MIDI Channel 0 to 8 are used to drive the 9 faders

Either if the controller wants to move the faders on the host or the host wants to move the controller faders, the sequence of messages is the same:

• Fader touched
• Fader new position
• Fader new position
• etc...
• Fader released

Function zone

This part is full of buttons and LEDs that follows the Note Bang behaviour. There is a massive summary table down there where all individual buttons are detailed.

Transport zone

Transport Buttons

These all follow the Note Bang behaviour and are detailed in the massive table down there.

Scroll encoder

This works exactly as the vPot encoders works. It uses CC number 60.

• +1: clockwise

• -1: counter-clockwise

  TODO: check acceleration encoding

Appendix

MIDI Note Mapping Summary

All note mapping is on Channel 0 (the first one).

Button / Led	Note	Dec	Hex
Rec 1	C-1	0	0
Rec 2	C#-1	1	1
Rec 3	D-1	2	2
Rec 4	D#-1	3	3
Rec 5	E-1	4	4
Rec 6	F-1	5	5
Rec 7	F#-1	6	6
Rec 8	G-1	7	7
Solo 1	G#-1	8	8
Solo 2	A-1	9	9
Solo 3	A#-1	10	A
Solo 4	B-1	11	B
Solo 5	C0	12	C
Solo 6	C#0	13	D
Solo 7	D0	14	E
Solo 8	D#0	15	F
Mute 1	E0	16	10
Mute 2	F0	17	11
Mute 3	F#0	18	12
Mute 4	G0	19	13
Mute 5	G#0	20	14
Mute 6	A0	21	15
Mute 7	A#0	22	16
Mute 8	B0	23	17
Sel 1	C1	24	18
Sel 2	C#1	25	19
Sel 3	D1	26	1A
Sel 4	D#1	27	1B
Sel 5	E1	28	1C
Sel 6	F1	29	1D
Sel 7	F#1	30	1E
Sel 8	G1	31	1F
Vpot switch 1	G#1	32	20
Vpot switch 2	A1	33	21
Vpot switch 3	A#1	34	22
Vpot switch 4	B1	35	23
Vpot switch 5	C2	36	24
Vpot switch 6	C#2	37	25
Vpot switch 7	D2	38	26
Vpot switch 8	D#2	39	27
Assign Track	E2	40	28
Assign Send	F2	41	29
Assign Pan/Surround	F#2	42	2A
Assign Plug-in	G2	43	2B
Assign EQ	G#2	44	2C
Assign Instrument	A2	45	2D
Bank Left	A#2	46	2E
Bank Right	B2	47	2F
Channel Left	C3	48	30
Channel Right	C#3	49	31
Flip	D3	50	32
Global	D#3	51	33
Name / Value Button	E3	52	34
SMPTE / BEATS Button	F3	53	35
F1	F#3	54	36
F2	G3	55	37
F3	G#3	56	38
F4	A3	57	39
F5	A#3	58	3A
F6	B3	59	3B
F7	C4	60	3C
F8	C#4	61	3D
MIDI Tracks	D4	62	3E
Inputs	D#4	63	3F
Audio Tracks	E4	64	40
Audio Intruments	F4	65	41
Aux	F#4	66	42
Busses	G4	67	43
Outputs	G#4	68	44
User	A4	69	45
Shift	A#4	70	46
Option	B4	71	47
Control	C5	72	48
Alt	C#5	73	49
Read/Off	D5	74	4A
Write	D#5	75	4B
Trim	E5	76	4C
Touch	F5	77	4D
Latch	F#5	78	4E
Group	G5	79	4F
Save	G#5	80	50
Undo	A5	81	51
Cancel	A#5	82	52
Enter	B5	83	53
Markers	C6	84	54
Nudge	C#6	85	55
Cycle	D6	86	56
Drop	D#6	87	57
Replace	E6	88	58
Click	F6	89	59
Solo	F#6	90	5A
Rewind	G6	91	5B
Forward	G#6	92	5C
Stop	A6	93	5D
Play	A#6	94	5E
Record	B6	95	5F
Up	C7	96	60
Down	C#7	97	61
Left	D7	98	62
Right	D#7	99	63
Zoom	E7	100	64
Scrub	F7	101	65
User switch 1	F#7	102	66
User switch 2	G7	103	67
Fader 1 Touched	G#7	104	68
Fader 2 Touched	A7	105	69
Fader 3 Touched	A#7	106	6A
Fader 4 Touched	B7	107	6B
Fader 5 Touched	C8	108	6C
Fader 6 Touched	C#8	109	6D
Fader 7 Touched	D8	110	6E
Fader 8 Touched	D#8	111	6F
Master Fader Touched	E8	112	70
SMPTE Led	F8	113	71
BEATS Led	F#8	114	72
RUDE SOLO Led	G8	115	73
	G#8	116	74
	A8	117	75
Relay Click	A#8	118	76
	B8	119	77

Control Change Mapping Summary

Control	MIDI Channel	CC #	Hex
vPot 1 rotation	0	16	10
vPot 2 rotation	0	17	11
vPot 3 rotation	0	18	12
vPot 4 rotation	0	19	13
vPot 5 rotation	0	20	14
vPot 6 rotation	0	21	18
vPot 7 rotation	0	22	16
vPot 8 rotation	0	23	17
External control	0	46	2E
vPot 1 LED ring	0	48	30
vPot 2 LED ring	0	49	31
vPot 3 LED ring	0	50	32
vPot 4 LED ring	0	51	33
vPot 5 LED ring	0	52	34
vPot 6 LED ring	0	53	35
vPot 7 LED ring	0	54	36
vPot 8 LED ring	0	55	37
Jog wheel	0	60	3C
Timecode digit 1	0 or 15	64	40
Timecode digit 2	0 or 15	65	41
Timecode digit 3	0 or 15	66	42
Timecode digit 4	0 or 15	67	43
Timecode digit 5	0 or 15	68	44
Timecode digit 6	0 or 15	69	45
Timecode digit 7	0 or 15	70	46
Timecode digit 8	0 or 15	71	47
Timecode digit 9	0 or 15	72	48
Timecode digit 10	0 or 15	73	49
Assignment digit 1	0 or 15	74	4A
Assignment digit 2	0 or 15	75	4B

Pitch Bend Mapping Summary

Control	MIDI Channel
Fader 1 position	0
Fader 2 position	1
Fader 3 position	2
Fader 4 position	3
Fader 5 position	4
Fader 6 position	5
Fader 7 position	6
Fader 8 position	7
Master Fader position	8

Channel Pressure (After Touch) Mapping Summary

Control	MIDI Channel	Value (Hex)
Metering	0	sv

LCD bitmap font character table

	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
0
1
2
3
4
5
6
7

7-segment digit character table

	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
0
1
2
3
4
5
6
7

Special ASCII Table for Assignment & Timecode Display

Mackie Control Code (Bit 5-0)	Equivalent ASCII code	Character
0 (0x00)	64 (0x40)
1 (0x01)	65 (0x41)	A
2 (0x02)	66 (0x42)	B
3 (0x03)	67 (0x43)	C
4 (0x04)	68 (0x44)	D
5 (0x05)	69 (0x45)	E
6 (0x06)	70 (0x46)	F
7 (0x07)	71 (0x47)	G
8 (0x08)	72 (0x48)	H
9 (0x09)	73 (0x49)	I
10 (0x0A)	74 (0x4A)	J
11 (0x0B)	75 (0x4B)	K
12 (0x0C)	76 (0x4C)	L
13 (0x0D)	77 (0x4D)	M
14 (0x0E)	78 (0x4E)	N
15 (0x0F)	79 (0x4F)	O
16 (0x10)	80 (0x50)	P
17 (0x11)	81 (0x51)	Q
18 (0x12)	82 (0x52)	R
19 (0x13)	83 (0x53)	S
20 (0x14)	84 (0x54)	T
21 (0x15)	85 (0x55)	U
22 (0x16)	86 (0x56)	V
23 (0x17)	87 (0x57)	W
24 (0x18)	88 (0x58)	X
25 (0x19)	89 (0x59)	Y
26 (0x1A)	90 (0x5A)	Z
27 (0x1B)	91 (0x5B)
28 (0x1C)	92 (0x5C)
29 (0x1D)	93 (0x5D)
30 (0x1E)	94 (0x5E)
31 (0x1F)	95 (0x5F)
32 (0x20)	32 (0x20)	(Space)
33 (0x21)	33 (0x21)
34 (0x22)	34 (0x22)
35 (0x23)	35 (0x23)
36 (0x24)	36 (0x24)
37 (0x25)	37 (0x25)
38 (0x26)	38 (0x26)
39 (0x27)	39 (0x27)
40 (0x28)	40 (0x28)
41 (0x29)	41 (0x29)
42 (0x2A)	42 (0x2A)
43 (0x2B)	43 (0x2B)
44 (0x2C)	44 (0x2C)
45 (0x2D)	45 (0x2D)
46 (0x2E)	46 (0x2E)
47 (0x2F)	47 (0x2F)
48 (0x30)	48 (0x30)	0
49 (0x31)	49 (0x31)	1
50 (0x32)	50 (0x32)	2
51 (0x33)	51 (0x33)	3
52 (0x34)	52 (0x34)	4
53 (0x35)	53 (0x35)	5
54 (0x36)	54 (0x36)	6
55 (0x37)	55 (0x37)	7
56 (0x38)	56 (0x38)	8
58 (0x3A)	58 (0x3A)
59 (0x3B)	59 (0x3B)
60 (0x3C)	60 (0x3C)
61 (0x3D)	61 (0x3D)
62 (0x3E)	62 (0x3E)
63 (0x3F)	63 (0x3F)

Reminder of MIDI Messages Format

Message	Status Byte D7..D0	Data1 Byte D7..D0	Data2 Byte D7..D0
Note Off	0b1000cccc	0b0nnnnnnn	0b0vvvvvvv	c: Channel n: Note v: Velocity
Note On	0b1001cccc	0b0nnnnnnn	0b0vvvvvvv	c: Channel n: Note v: Velocity
AfterTouch Key pressure	0b1010cccc	0b0nnnnnnn	0b0vvvvvvv	c: Channel n: Note v: Velocity
Control Change	0b1011cccc	0b0nnnnnnn	0b0vvvvvvv	c: Channel n: CC number v: Value
Program Change	0b1100cccc	0b0ppppppp		c: Channel p: Program
AfterTouch Chan Pressure	0b1101cccc	0b0vvvvvvv		c: Channel v: Value
Pitch Bend	0b1110cccc	0b0lllllll	0b0mmmmmmm	c: Channel l: LSB m: MSB
Sysex start	0b11110000
Sysex end	0b11110111