MIDI commands used to control Ardour

Controls in Ardour are controlled with Change Control (CC) MIDI commands. Those commands can be sent on arbitrary MIDI channels. Faders and other continously moved controls are controlled with CC commands with a range of 0-127. Buttons (e.g. Mute buttons) are also controlled with CC commands, where a value of 0-63 switches the button off and a value of 64-127 switches the button on.

Ardour also receives and sends some MMC commands, such as play, stop, locate, punch in and punch out. Make sure you configured Ardour to listen for MMC commands as descibed in Section 2.2, “MIDI Configuration”.