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MIDI Implementation
OMNI OFF (Controller number 124)
Status
2nd byte
BnH
7CH
n = MIDI channel number:0
H - FH (ch.1 - ch.16)
* The same processing will be carried out as when All Notes Off is received.
OMNI ON (Controller number 125)
Status
2nd byte
BnH
7DH
n = MIDI channel number:
0H - FH (ch.1 - ch.16)
* The same processing will be carried out as when All Notes Off is received.
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 Sound Off or All Notes Off is
received.
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 Sound Off or All Notes Off is
received.
System Realtime Message
* Following System Realtime Messages cannot be recorded in recording mode.
Timing Clock
Status
F8H
* Recognized only when the [SYSTEM]-(UTILITY) Seq Sync is set to "Ext".
Start
Status
FAH
* Recognized only when the [SYSTEM]-(UTILITY) Seq Sync is set to "Ext" or "Remote".
Continue
Status
FBH
* Recognized only when the [SYSTEM]-(UTILITY) Seq Sync is set to "Ext" or "Remote".
Stop
Status
FCH
* Recognized only when the [SYSTEM]-(UTILITY) Seq Sync is set to "Ext" or "Remote".
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 about 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.
100
3rd byte
00H
3rd byte
00H
3rd byte
mmH
3rd byte
00H
System Exclusive Message
* Following System Exclusive Messages cannot be recorded.
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 normal mode of HPD-15 are; Universal
Non-realtime System Exclusive Messages, Data Requests (RQ1), and Data Set (DT1).
Universal Non-realtime System Exclusive Messages
Identity Request
Status
Data byte
F0H
7EH, dev, 06H, 01H
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, 01H
Identity request
F7H
EOX (End Of Exclusive)
* Even if the Device ID is 7FH (Broadcast), Identity reply message will be transmitted.
* When Identity Request is received, Identity reply message will be transmitted (p. 104).
Data transmission
HPD-15 can transmit and receive the various parameters using System Exclusive messages.
The exclusive message of HPD-15's data has a model ID of 00H 2EH and a device ID of 10H
(17). Device ID can be changed in HPD-15.
Request data 1
RQ1 (11H)
This message requests the other device to send data. The Address and Size determine the
type and amount of data to be sent.
When a Data Request message is received, if the device is ready to transmit data and if the
address and size are appropriate, the requested data will be transmitted as a "Data Set 1
(DT1)" message. If not, nothing will be transmitted.
Status
Data byte
F0H
41H, dev, 00H, 2EH, 11H, aaH, bbH,
ccH, ddH, ssH, ttH, uuH, vvH, sum
Byte Explanation
F0H
Exclusive status
41H
ID number (Roland)
dev
Device ID (dev: 00H - 1FH (1 - 32) Initial value is 10H (17))
00H 2EH
Model ID (HPD-15)
11H
Command ID (RQ1)
aaH
Address MSB: upper byte of the starting address of the requested data
bbH
Address 2nd: 2nd byte of the starting address of the requested data
ccH
Address 3rd: 3rd byte of the starting address of the requested data
ddH
Address LSB: lower byte of the starting address of the requested data
ssH
Size MSB
ttH
Size 2nd
uuH
Size 3rd
vvH
Size LSB
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. Refer to the
Address and Size listed in "Parameter Dump Request" (p. 108).
* Regarding the checksum please refer to p. 109.
Status
F7H
Status
F7H
Status
F7H
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