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MIDI Implementation
Byte
Explanation
F0H:
Exclusive status
41H:
ID number (Roland)
10H:
Device ID
00H:
Model ID1 (UA-100)
11H:
Model ID2 (UA-100)
11H:
Command ID (RQ1)
aaH:
Address MSB: upper byte of the starting address of the requested data
bbH:
Address: middle byte of the starting address of the requested data
ccH:
ddH:
Address LSB: lower byte of the starting address of the requested data
ssH:
Size MSB
ttH:
Size
uuH:
Size
vvH:
Size MSB
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 "Individual Parameter Transmission"
(p. 82).
Data set 1 DT1 (12H)
This is the message that actually performs data transmission, and is used when you
wish to transmit the data.
Status
Data byte
F0H
41H, dev, 00H, 11H, 12H, aaH, bbH, ccH, ddH, eeH, ... ffH, sum
Byte
Explanation
F0H:
Exclusive status
41H:
ID number (Roland)
10H:
Device ID
00H:
Model ID1 (UA-100)
11H:
Model ID2 (UA-100)
12H:
Command ID (DT1)
aaH:
Address MSB: upper byte of the starting address of the transmitted data
bbH:
Address: middle byte of the starting address of the transmitted data
ccH:
ddH:
Address LSB: lower byte of the starting address of the transmitted data
eeH:
Data: the actual data to be transmitted. Multiple bytes of data
are transmitted starting from the address.
:
:
ffH:
Data
sum:
Checksum
F7H:
EOX (End Of Exclusive)
* The amount of data that can be transmitted at one time depends on the type of data,
and data can be received only from the specified starting address and size. Refer to
the Address and Size given in "Individual Parameter Transmission"(p. 82).
* 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.
80
2. Transmit Data
Channel Mode Messages
All Sounds Off (Controller number 120)
The UA-100 sends in cases like the ones shown below.
• Sent to the MIDI OUT 1/2 ports when a connected USB cable has come loose.
• Sent to the Roland UA-100 MIDI 1/2 MIDI input devices when the interval for
receiving Active Sensing messages exceeds 420 ms.
Status
2nd byte
BnH
78H
n = MIDI channel number: 0H-FH (ch.1-ch.16)
* The external sound module that receives this message turns off all currently-
sounding notes on the corresponding channel immediately.
Reset All Controllers (Controller number 121)
The UA-100 sends in cases like the ones shown below.
• Sent to the MIDI OUT 1/2 ports when a connected USB cable has come loose.
• Sent to the Roland UA-100 MIDI 1/2 MIDI input devices when the interval for
receiving Active Sensing messages exceeds 420 ms.
Status
2nd byte
Status
BnH
79H
F7H
n = MIDI channel number: 0H-FH (ch.1-ch.16)
* The external sound module that receives this message will set controllers to their
reset values.
Example: In the case of the SC-88Pro, the following Controllers are reset.
Controller
Pitch Bend Change
Polyphonic Key Pressure
Channel Pressure
Modulation
Expression
Hold 1
Portamento
Sostenuto
Soft
RPN
NRPN
All Notes Off (Controller number 123)
The UA-100 sends in cases like the ones shown below.
• Sent to the MIDI OUT 1/2 ports when a connected USB cable has come loose.
• Sent to the Roland UA-100 MIDI 1/2 MIDI input devices when the interval for
receiving Active Sensing messages exceeds 420 ms.
Status
2nd byte
BnH
7BH
n = MIDI channel number: 0H-FH (ch.1-ch.16)
* The external sound module that receives this message will turn off all notes on
the corresponding channel. However if Hold 1 or Sostenuto is ON, the sound will
be continued until these are turned off.
3rd byte
00H
3rd byte
00H
Reset value
+/-0 (center)
0 (off)
0 (off)
0 (off)
127 (max)
0 (off)
0 (off)
0 (off)
0 (off)
unset; previously set data will not change
unset; previously set data will not change
3rd byte
00H
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