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122
MIDI Implementation
❍
Effect Control 2 (Controller number 13)
Status 2nd byte 3rd byte
BnH 0DH vvH
n = MIDI channel number: 0H - FH (ch.1 - ch.16)
vv = Control value: 00H - 7FH (1 - 127)
* This message is transmitted when a pad for which PATCH/PAD CONTROL/
Effects Switch is set to VELO is struck.
●
Program Change
Status 2nd byte
CnH ppH
n = MIDI channel number: 0H - FH (ch.1 - ch.16)
pp = Program number: 00H - 7FH (prog.1 - prog.128)
* The program number is transmitted when a patch is selected.
* Not transmitted when SETUP/MIDI/PC TX/RX Switch is set to “OFF.” (Initial
Value is ON)
■
System Realtime Message
●
Active sensing
Status
FEH
* This will be transmitted constantly at intervals of approximately 250 ms.
* Not transmitted when SETUP/MIDI/MIDI Ch is set to OFF.
■
System Exclusive Messages
* Regarding the system exclusive message refer to Page 120.
Identity reply and Data Set 1 (DT1) are the only System Exclusive messages
transmitted by SPD-S.
When an appropriate Identity Request or Data Request 1 (RQ1) message is
received, the requested internal data will be transmitted.
* Not transmitted when SETUP/MIDI/MIDI Ch is set to OFF.
●
Universal Non-realtime System Exclusive
Messages
❍
Identity Reply
Status
Data byte Status
F0H 7EH, dev, 06H, 02H, 41H, F7H
67H, 01H, 00H, 00H,
00H, 00H, 00H, 00H
Byte Explanation
F0H Exclusive status
7EH ID number (universal non-realtime message)
dev Device ID (dev: 00H - 1FH (1 - 32) Initial value is 10H(17))
06H 02H Identity Reply
41H ID number(Roland)
67H 01H Device family code
00H 00H Device family number code
00H 00H 00H 00H software revision level
F7H EOX (End Of Exclusive)
* When Identity Request (Page 120) is received, Identity Reply message will be
transmitted.
●
Data Transmission
❍
Data set 1 DT1 (12H)
Status Data byte Status
F0H 41H, dev, 00H, 67H, 12H, F7H
aaH, bbH, ccH, ddH, eeH,... ffH,
sum
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H - 1FH (1 - 32) Initial value is 10H(17))
00H 67H Model ID (SPD-S)
12H Command ID (DT1)
aaH Address MSB: upper byte of the starting address of the data to
be sent
bbH Address 2nd: 2nd byte of the starting address of the data to be
sent
ccH Address 3rd: 3rd byte of the starting address of the data to be
sent.
ddH Address LSB: lower byte of the starting address of the data to be
sent.
eeH Data: the actual data to be sent. Multiple bytes of data are
transmitted in order starting from the address.
: :
ffH Data
sum Checksum
F7H EOX (End Of Exclusive)
* The amount of data that can be transmitted at once time will depend on the type
of data, and data must be requested using a specific starting address and size.
* Data larger than 128 bytes must be divided into packets of 128 bytes or less. If
“Data Set 1” is transmitted successively, there must be an interval of at least 40
ms between packets.
* Regarding the checksum please refer to Page 123.
SPDS_e.book 122 ページ ２００４年４月１９日 月曜日 午前９時５８分