10.6

Table Of Contents
993Logic Pro User Guide
MIDI Machine Control in Logic Pro
MMC (MIDI Machine Control) is a set of MIDI commands that Logic Pro uses to control the
transport functions of any MMC-capable tape machine. The recording process can also be
controlled and automated from Logic Pro via MMC.
The tape machine provides a SMPTE signal that Logic Pro uses as a synchronization
source—with Logic Pro as the receiver.
You control connected devices from Logic Pro by using the control bar and navigation
functions, including direct positioning and cycle jumps. Dragging the playhead sends a
continuous stream of MMC Locate commands until you release the mouse button.
Important: Logic Pro needs to wait for the connected device to finish rewinding or
forwarding.
Turn on MMC
In Logic Pro, do one of the following:
Control-click the control bar Sync button, then choose the MIDI Machine Control (MMC)
setting in the shortcut menu.
Choose File > Project Settings > Synchronization, then select the Transmit MMC
checkbox in the MIDI pane.
Set up a MMC tape machine for recording in Logic Pro
Logic Pro supports up to 64 MMC tracks, allowing devices such as the ADAT to be
operated with MIDI Machine Control.
Each track can act as a tape control track.
1. Create an instrument track.
2. Control-click the instrument icon in the Track inspector, hold down the Option key, then
select the MMC icon from the Others category.
The MMC icon is the only icon that actually affects the way a track behaves. All other
icons are purely graphical in nature.
You only need to create one instrument with the MMC icon. This instrument can be
assigned to as many tracks as required for control of (each track on) your external
recorder.
Tip: It is recommended that you group tape control tracks in a folder. Tape control
tracks must be placed at the top of the track list. If you pack tape control tracks into a
folder, this folder must be the top track in the list.