User`s guide

44 Serial Control
MIDI Serial Protocol (DVM2 only)
The Digital Video Machine 2 may also be controlled using MIDI Machine
Control or MIDI Show Control, via the 5-Pin DIN Programming Connector on
the rear of the unit. The data format is 31250, N, 8, 1: 31250 baud, 8 bits/byte,
no parity, with one stop bit. MIDI operation is selected using the configuration
DIP switch or Web Page setup.
MIDI Machine Control
The serial commands that may be used with the MIDI Machine Control protocol
are:
Command Function
Stop Stop playback
Play Play the selected file
Still Stop playback and freeze the current frame
Select File Select a file
The format for a MIDI Machine Control message is:
F0H 7FH <device_ID> 06H <command> F7H
Where:
<device_ID> = 7FH for wildcard.
= 00H – 6FH, individual ID’ s
(See “ Web Pages” Section for how to set the MIDI
Device ID)
<command> = 01H, Stop
= 02H, Play
= 09H, Still
= 44H, aa, bb, cc, … , Select File
The details of these commands are listed below. The “ H” following each
command indicates that the command bytes are in hexadecimal.