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8
MIDI Implementation
■
Channel Mode Messages
●
MONO (Controller number 126)
Status
2nd byte 3rd byte
BnH 7EH 01H
n = MIDI channel number: 0H - FH (ch.1 - 16)
* These messages are transmitted when Mono/Poly value is set to MONO in EXTERNAL
Zone.
●
POLY (Controller number 127)
Status
2nd byte 3rd byte
BnH 7FH 00H
n = MIDI channel number: 0H - FH (ch.1 - 16)
* These messages are transmitted when Mono/Poly value is set to POLY in EXTERNAL
Zone.
■
System Realtime Messages
●
Timing Clock
Status
F8H
* This message will be transmitted if the Clock Out parameter (EDIT: SYSTEM: Clock Out)
is ON.
●
Start
Status
FAH
* This message is sent on START operation when START/STOP function is selected on
Foot Controller or S1/S2 button.
●
Stop
Status
FCH
* This message is sent on STOP operation when START/STOP function is selected on Foot
Controller or S1/S2 button.
●
Active Sensing
Status
FEH
* This message is transmitted at intervals of approximately 250 msec.
■System Exclusive Messages
Universal Non-realtime System Exclusive Message and Data Set 1 (DT1) are the only
System Exclusive messages transmitted by the RD-700GX.
●Universal Non-realtime System Exclusive Message
❍Identity Reply Message
Receiving Identity Request Message, the RD-700GX send this message.
Status Data byte Status
F0H 7EH, dev, 06H, 02H, 41H, 2BH, 02H, F7H
00H, 00H, 00H, 01H, 00H, 00H
Byte
Explanation
F0H Exclusive status
7EH ID number (Universal Non-realtime Message)
dev Device ID (use the same as the device ID of Roland)
06H Sub ID#1 (General Information)
02H Sub ID#2 (Identity Reply)
41H ID number (Roland)
2BH 02H Device family code (RD-700GX)
00H 00H Device family number code (RD-700GX)
00H 01H 00H 00H Software revision level
F7H EOX (End of Exclusive)
●Data Transmission
❍Data set 1DT1 (12H)
Status Data byte Status
F0H 41H, dev, 00H, 00H, 2BH, 12H, aaH, bbH, F7H
ccH, ddH, eeH, ... ffH, sum
Byte
Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H - 1FH, Initial value is 10H)
00H Model ID #1 (RD-700GX)
00H Model ID #2 (RD-700GX)
2BH Model ID #3 (RD-700GX)
12H Command ID (DT1)
aaH Address MSB: upper byte of the starting address of the data to be sent
bbH Address:upper middle byte of the starting address of the data to be
sent
ccH Address:lower middle 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 one time depends on the type of data, and
data will be transmitted from the specified starting address and size. Refer to the address
and size given in “Parameter Address Map” (p. 9).
* Data larger than 256 bytes will be divided into packets of 256 bytes or less, and each
packet will be sent at an interval of about 20 ms.