Roland SCB-55 Owner's Manual page 24

<6> MONO (Controller number 126)
Status Second Third
BnH 7EH mmH
n=MIDI channel number
mm=number of mono
* MONO is recognized as "All sounds off." The specified channel turns to
Mode4 (M=1), even if mm is not equal to 1 (mm is ignored).
<7> POLY (Controller number 127)
Status Second Third
BnH 7FH 00H
n=MIDI channel number
* POLY is recognized as "All sounds off." The specified channel turns to
Mode3.
[System Realtime Message]
<1> ACTIVE SENSING
Status
FEH
* Having received an "Active sensing" message, GS expects to receive addi-
tional active sensing messages at 300ms intervals. If the interval is greater
than 420ms, GS executes "All sounds off," "All notes off" and "Reset all
controllers" and returns to normal operation. (Monitoring of active sensing
messages will terminate.)
[System Exclusive Message]
Status Data
F0H iiH,ddH,.....,eeH
F0H : System Exclusive
ii=ID number : The ID number identifies the manufacturer of a MIDI
device that triggers an exclusive message.
Value 7EH and 7FH are reserved to use as universal
messages which are used for extension of the MIDI
Standard.
41H : Roland's Manufacturer-ID.
7EH : Universal Non-Realtime Message
7FH : Universal Realtime Message
dd,...,ee=data : 00H-7FH (0-127)
F7H : EOX (End of Exclusive/System common)
<1> SYSTEM EXCLUSIVE MESSAGES OF MODE CHANGE
System Exclusive Messages of Mode Change are the messages used to ini-
tialize the internal parameters of the device to General MIDI mode or GS
default mode.
"GS reset" uses a form of Roland Exclusive Message. "Turn General MIDI
System On" uses a form of Universal Non Realtime Message.
(1) GS reset
Status Data Byte
F0H 41H, 10H, 42H, 12H, 40H, 00H, 7FH, 00H, 41H
Byte Description
F0H Exclusive status
41H ID number
10H Device ID
42H Model ID
12H Command ID
40H Address MSB
00H :
7FH Address LSB
00H Data
41H Checksum
F7H EOX
* Upon receiving this message, all the internal parameters are set to the
default settings of the GS Format. (Rx.NRPN SW will be turned ON by this
message.)
* It takes about 50ms to execute this message.
24
: 0H - FH (ch.1 - ch.16)
: 00H - 10H (0 - 16)
: 0H - FH (ch.1 - ch.16)
Status
F7H
(Roland)
(GS)
(DT1)
(GS reset)
(End of exclusive)
(2) Turn General MIDI System On
Status
F0H
Byte
F0H
7EH
7FH
09H
01H
F7H
* Upon receiving this message, all the internal parameters are set to the
default settings of General MIDI System Level 1. (Rx.NRPN SW will be
turned OFF by this message.)
* It takes about 50ms to execute this message.
<2> UNIVERSAL REALTIME SYSTEM EXCLUSIVE MESSAGE
(1) Master Volume
Status
F0H
Byte
F0H
7FH
7FH
04H
02H
mm,ll
F7H
* The LSB (llH) is ignored (value=0).
<3> DATA TRANSFER
SCB-55 can receive the various parameters using System Exclusive mes-
sages of the following data format.
GS Common Exclusive messages use Model ID = 42H and Device ID = 17
(10H).
SCB-55 has a unique Exclusive communication function which has it's
own Model IDs in addition to the GS Common Exclusive messages.
(1) Data set 1
This message corresponds to the actual data transfer process.
On receiving a DT1 message, the device writes the data to internal memo-
ry according to the address.
Status
F0H
Byte
F0H
41H
10H
42H
12H
aaH
Status bbH
F7H ccH
ddH
:
eeH
sum
F7H
* SCB-55 only recognizes the DT1 messages whose address and size match
the Parameter Address Map (Section 2).
* A DT1 message cannot include data more than 128 bytes. If the amount
of data to send is large (more than 128 bytes), then send the data in sepa-
rate packets at an interval of 40ms or more.
* The error checking process uses a Checksum. Refer to "Useful
Information" (p. 30) to calculate a Checksum.
Data Byte Status
7EH, 7FH, 09H, 01H F7H
Description
Exclusive status
ID number (Universal Non-Realtime message)
ID of target device (Broadcast)
sub-ID#1 (General MIDI message)
sub-ID#2 (General MIDI On)
EOX (End of exclusive)
Data Byte
7FH, 7FH, 04H, 01H, llH, mmH
Description
Exclusive status
ID number (Universal Realtime message)
ID of target device (Broadcast)
sub-ID#1 (Device Control Message)
sub-ID#2 (Master Volume)
Master Volume 00 00H - 7F 7FH (0 - 16383)
EOX (End of exclusive)
DT1
Data Byte
41H, 10H, 42H, 12H, aaH, bbH, ccH, ddH, ... eeH, sum F7H
Description
Exclusive status
Manufacturer's ID (Roland)
Device ID
Model ID (GS)
Command ID (DT1)
Address MSB
:
Address LSB
Data
:
Data
Checksum
EOX (End of exclusive)
Status
F7H
Status