GEM GPS3600 Owner's Manual page 287

DATA PACKET:
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F0H
7EH
cc
02H
kk
<120 bytes>
ll
F7H
DEVICE INQUIRY
To be able to identify a MIDI device, the following two messages are utilized; the first used for the inquiry:
INQUIRY MESSAGE:
F0H =
7EH =
cc =
06H =
01H =
F7H =
and the second for the device response:
RESPONSE MESSAGE:
F0 7E cc 06 02 mm ff ff dd dd ss ss ss ss F7
cc
mm
ff ff
dd dd
ss ss ss ss
UNIVERSAL REAL TIME SYSTEM MESSAGES
DEVICE CONTROL
These messages are used to control the general functions of the system, without refering to a specific MIDI channel and, there-
fore, inserted in the context of the Universal messages.
Master Volume:
F0H =
7FH =
cc =
04H =
01H =
vv vv =
F7H =
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= System Exclusive Message status
= Non-Real Time extension
= device ID
= DATA PACKET ID
= running packet count (0-127)
= data (7 bit data format)
= checksum (XOR of 7E cc kk <120 bytes>)
= EOX
System Exclusive Message status
Non-Real Time extension
device ID
INQUIRY ID
Identity Request
EOX
= device ID
= Manufactures Sistem Exclusive id code
= Device family code (14 bits, LSB first)
= Device family member code (14 bits, LSB first)
= Software revision (format device specific)
System Exclusive Message status
Real Time extension
device ID
Device Control ID
Master Volume ID
Volume (LSB first)
EOX
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System Exclusive A•29
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