
9 Control Interfaces 215
Emphasis may send the following MSC commands to MIDI devices. If MSC output is
enabled on the console, the console automatically sends the MSC commands. The
console’s transmitter Device ID must match the device ID for the MIDI device receiving the
signals.
MSC Frame Packet
An MSC frame packet consists of several bytes. Byte types, their hexadecimal values and
explanations are given in the table below.
Resume •The Resume command by itself resumes all holding
fades in both fader pairs.
• If Resume is sent with a cue number and a list entry of 1,
only a cue holding in the A/B fader resumes.
• If Resume is sent with a cue number and a list entry of 2,
only the cue holding in the C/D fader resumes.
• The cue number field is ignored, but must be included if a
list entry is sent.
Fire •The Fire command executes a specified macro. Macro
number must be in the range 1-127. If no macro is
specified, or if the macro number is out of range, the
command is ignored.
[A/B Go] • If a cue is pending, the console transmits [A/B Go]
with cue number and a list entry of 1.
• If a cue is holding, the console transmits [A/B
Resume] with cue number and a list entry of 1.
[C/D Go] • If a cue is pending, the console transmits [C/D Go]
with cue number and a list entry of 2.
• If a cue is holding, the console transmits
[C/D Resume] with cue number and a list entry of 2.
[A/B Hold] • If a cue is running, the console transmits [A/B Stop]
with cue number and a list entry of 1.
[C/D Hold] • If a cue is running, the console transmits [C/D Stop]
with cue number and a list entry of 2.
Macros • For macros 1-127, the console transmits Fire with
the macro number.
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
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