Roland RD-700NX Midi Implementation Manual page 8

MIDI Implementation
●Data Transmission
❍Data set 1DT1 (12H)
Status Data byte
F0H 41H, dev, 00H, 00H, 50H, 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-700NX)
00H Model ID #2 (RD-700NX)
50H Model ID #3 (RD-700NX)
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.
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Status