Apple Logic Pro 9 - Manual (Page 1139)

To create a MIDI Click object
µ
Choose New > MIDI Metronome Click.
Each project can have only one MIDI Click object. You only need to create a MIDI Click
object if the one that existed when the project was created has been deleted.
There is a button on the Transport bar that turns the MIDI Click on and off.
Control-click this button, then choose Metronome Settings from the shortcut menu. This
opens the Metronome project settings. For details, see
Metronome Settings . In this pane,
you can also set the MIDI Click to play during recording or playback. This dialog mirrors
the settings in the Parameter box of the MIDI Click object: checkboxes for Bar, Beat, and
Division allow you to generate note events separately for bars, beats, and divisions. The
Channel, Note, and Velocity parameters define the MIDI channel, note number, and
velocity of generated notes. The MIDI Port parameter allows you to set a direct output
port for the metronome.
1139 Chapter 37 Environment Objects Reference