284 Chapter 25 Control interfaces
MSC frame packet to run a cue:
An MSC frame packet consists of several bytes. Byte types, their
hexidecimal values and explanations are given in the table below.
Byte type
Value
(Hex)
Explanation
Start Byte F0 Start of System Exclusive Message
7F Start of message
Send Channel Send transmit channel number or 7F = “All
Call” for system wide broadcasts
System
Exclusive
Message
2 Indicates System Exclusive Message is MIDI
Show Control
“Lighting”
command
format
01 User can send 7F = “All Types”
“GO” general
command
Cue number Cues numbered 0–9 are represented in an
MSC frame as hexidecimal 30–39. For
decimal cues, the point character is
represented by hexidecimal 2E.
Delimiter 00
Faders 31
or
32
Console faders are toggled by changing the
Cue List number, with fader A/B represented
by 31 and fader C/D represented by 32, both
hexidecimal.
Delimiter 00
Stop Byte F7 End of System Exclusive Message
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