Table of Contents
Advertisement
MONO (Controller number 126)
Status
2nd byte
BnH
7EH
n = MIDI channel number : 0H-FH (ch.1-ch.16)
mm = mono number : 00H-10H (0-16)
* The same processing will be carried out as when All Sounds Off and All Notes Off is
received, and the corresponding channel will be set to Mode 4 (M = 1) regardless of the
value of "mono number."
* Not Recieved in Keyboard Part.
POLY (Controller number 127)
Status
2nd byte
BnH
7FH
n = MIDI channel number : 0H-FH (ch.1-ch.16)
* The same processing will be carried out as when All Sounds Off and All Notes Off is
received, and the corresponding channel will be set to Mode 3.
System Realtime Message
Active Sensing
Status
FEH
* When Active Sensing is received, the unit will begin monitoring the intervals of all
further messages. While monitoring, if the interval between messages exceeds 420 ms,
the same processing will be carried out as when All Sounds Off, All Notes Off and Reset
All Controllers are received, and message interval monitoring will be halted.
System Exclusive Message
Status
Data byte
F0H
iiH, ddH, ......, eeH
F0H:System Exclusive Message status
ii = ID number : an ID number (manufacturer ID) to indicate the manufacturer whose
Exclusive message this is. Roland's manufacturer ID is 41H.
ID numbers 7EH and 7FH are extensions of the MIDI standard; Universal Non-realtime
Messages (7EH) and Universal Realtime Messages (7FH).
dd,...,ee = data : 00H-7FH (0-127)
F7H : EOX (End Of Exclusive)
The System Exclusive Messages received by the AT-20R/30R are; messages related to mode
settings, Universal Realtime System Exclusive messages and Data Set (DT1).
System exclusive messages related to mode settings
These messages are used to initialize a device to GS or General MIDI mode, or change the
operating mode. When creating performance data, a "Turn General MIDI System On"
message should be inserted at the beginning of a General MIDI score, and a "GS Reset"
message at the beginning of a GS music data. Each song should contain only one mode
message as appropriate for the type of data. (Do not insert two or more mode setting
messages in a single song.)
"Turn General MIDI System On and "Turn General MIDI System Off" use Universal Non-
realtime Message format. "GS Reset" use Roland system exclusive format "Data Set 1 (DT1)."
Turn General MIDI System On
This is a command message that resets the internal settings of the unit to the General MIDI
initial state (General MIDI System-Level 1). After receiving this message AT-20R/30R, will
automatically be set to the proper condition for correctly playing a General MIDI score.
Status
Data byte
F0H
7EH, 7FH, 09H, 01H
Byte
Explanaton
F0H
Exclusive status
7EH
ID number (Universal Non-realtime Message)
7FH
Device ID (Broadcast)
09H
Sub ID#1 (General MIDI Message)
01H
Sub ID#2 (General MIDI On)
F7H
EOX (End Of Exclusive)
* When this message is received, Rx.BANK SELECT will be OFF and Rx.NRPN will be
OFF.
* There must be an interval of at least 50 ms between this message and the next message.
* Not Recieved in Keyboard Part.
3rd bytes
mmH
3rd bytes
00H
Status
F7H
Status
F7H
AT-20R/30R MIDI IMPLEMENTATION
General MIDI System Off
Status
Data byte
F0H
7EH, 7FH, 09H, 02H
Byte
Explanation
F0H
Exclusive status
7EH
ID number (Universal Non-realtime Message)
7FH
Device ID (Broadcast)
09H
sub-ID#1 (General MIDI message)
02H
sub-ID#2 (General MIDI Off)
40H
EOX (End of exclusive)
* There must be an interval of at least 50 ms between this message and the next.
* Not Recieved in Keyboard Part.
GS reset
GS Reset is a command message that resets the internal settings of a device to the GS initial
state. This message will appear at the beginning of GS music data, and a GS device that
receives this message will automatically be set to the proper state to correctly playback GS
music data.
Status
Data byte
F0H
41H, 10H, 42H, 12H, 40H, 00H, 7FH, 00H, 41H
Byte
Explanation
F0H
Exclusive status
41H
ID number (Roland)
10H
Device ID (dev: 00H-1FH (1-32), Initial value is 10H (17))
42H
Model ID (GS)
12H
Command ID (DT1)
40H
Address MSB
00H
Address
7FH
Address LSB
00H
Data (GS reset)
41H
Checksum
F7H
EOX (End Of Exclusive)
* When this message is received, Rx.NRPN will be ON.
* There must be an interval of at least 50 ms between this message and the next.
* Not Recieved in Keyboard Part.
Exit GS mode
Status
Data byte
F0H
41H, 10H, 42H, 12H, 40H, 00H, 7FH, 7FH, 42H
Byte
Explanation
F0H
Exclusive status
41H
ID number (Roland)
10H
Device ID
42H
Model ID (GS)
12H
Command ID (DT1)
40H
Address MSB
00H
:
7FH
Address LSB
7FH
Data (Exit GS mode)
42H
Checksum
F7H
EOX (End of exclusive)
* There must be an interval of at least 50 ms between this message and the next.
* Not Recieved in Keyboard Part.
Universal Realtime System Exclusive Messages
Master volume
Status
Data byte
F0H
7FH, 7FH, 04H, 01H, llH, mmH
Byte
Explanation
F0H
Exclusive status
7FH
ID number (universal realtime message)
7FH
Device ID (Broadcast)
04H
Sub ID#1 (Device Control messages)
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.
4
Status
F7H
Status
F7H
Status
F7H
Status
F7H
Advertisement
Table of Contents
