
4
VC-2 MIDI Implementation
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Universal Realtime System Exclusive Messages
❍
Master Volume
Status Data byte Status
F0H 7FH, 7FH, 04H, 01H, llH, mmH F7H
Byte Explanation
F0H Exclusive status
7FH ID number (universal realtime message)
7FH Device ID (Broadcast)
04H Sub ID#1 (Device Control)
01H Sub ID#2 (Master Volume)
llH Master Volume lower byte
mmH Master Volume upper byte
F7H EOX (End Of Exclusive)
* The lower byte (llH) of Master Volume will be handled as 00H.
* The Master Level parameter (SYSTEM Com Master) will change.
❍
Master Fine Tuning
Status Data byte Status
F0H 7FH, 7FH, 04H, 03H, llH, mmH F7H
Byte Explanation
F0H Exclusive status
7FH ID number (universal realtime message)
7FH Device ID (Broadcast)
04H Sub ID#1 (Device Control)
03H Sub ID#2 (Master Fine Tuning)
llH Master Fine Tuning LSB
mmH Master Fine Tuning MSB
F7H EOX (End Of Exclusive)
mm, ll: 00 00H - 40 00H - 7F 7FH (-100 - 0 - +99.9 [cents])
* The Master Tune parameter (SYSTEM Com Master) will change.
❍
Master Coarse Tuning
Status Data byte Status
F0H 7FH, 7FH, 04H, 04H, llH, mmH F7
Byte Explanation
F0H Exclusive status
7FH ID number (universal realtime message)
7FH Device ID (Broadcast)
04H Sub ID#1 (Device Control)
04H Sub ID#2 (Master Coarse Tuning)
llH Master Coarse Tuning LSB
mmH Master Coarse Tuning MSB
F7H EOX (End Of Exclusive)
llH: ignored (processed as 00H)
mmH: 28H - 40H - 58H (-24 - 0 - +24 [semitones])
* The Master Key Shift parameter (SYSTEM Com Master) will change.
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Global Parameter Control
❍
Scale/Octave Tuning Adjust
Status Data byte Status
F0H 7EH, 7FH, 08H, 08H, ffH, ggH, hhH, ssH... F7
Byte Explanation
F0H Exclusive status
7EH ID number (Universal Non-realtime Message)
7FH Device ID (Broadcast)
08H Sub ID#1 (MIDI Tuning Standard)
08H Sub ID#2 (scale/octave tuning 1-byte form)
ffH Channel/Option byte 1
bits 0 to 1 = channel 15 to 16
bit 2 to 6 = Undefined
ggH Channel byte 2
bits 0 to 6 = channel 8 to 14
hhH Channel byte 3
bits 0 to 6 = channel 1 to 7
ssH 12 byte tuning offset of 12 semitones from C to B
00H = -64 [cents]
40H = 0 [cents] (equal temperament)
7FH = +63 [cents]
F7H EOX (End Of Exclusive)
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Data Transmission
This instrument can use exclusive messages to exchange many varieties of internal
settings with other devices.
The model ID of the exclusive messages used by this instrument is 00H 53H.
❍
Data Request 1 (RQ1)
This message requests the other device to transmit data. The address and size
indicate the type and amount of data that is requested.
When a Data Request message is received, if the device is in a state in which it is
able to transmit data, and if the address and size are appropriate, the requested
data is transmitted as a Data Set 1 (DT1) message. If the conditions are not met,
nothing is transmitted.
Status Data byte Status
F0H 41H, dev, 00H, 00H, 0DH, 11H, aaH, F7H
bbH, ccH, ddH, ssH, ttH, uuH, vvH, sum
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 10H - 1FH, 7FH)
00H Model ID #1 (VC-2)
00H Model ID #2 (VC-2)
0DH Model ID #3 (VC-2)
11H Command ID (RQ1)
aaH Address MSB
bbH Address
ccH Address
ddH Address LSB
ssH Size MSB
ttH Size
uuH Size
vvH Size LSB
sum Checksum
F7H EOX (End Of Exclusive)
* The size of data that can be transmitted at one time is fixed for each type of data.
And data requests must be made with a fixed starting address and size. Refer to
the address and size given in “Parameter Address Map” (p. 6).
* For the checksum, refer to (p. 14).
* Not received when the Receive Exclusive (Rx Sys-Ex) parameter (SYSTEM
Common MIDI/USB) is OFF.