Roland SC-88 Pro - Manual (Page 194)

Chapter 8. Appendix 192
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H - 1FH Initial value is 10H(17))
42H Model ID (GS)
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 Address LSB : lower byte of the starting address of the requested
data
ssH Size MSB
ttH Size
uuH 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 Section 3 (page 193).
* Regarding the checksum please refer to Section 5 (page 207).
❍ 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 Status
F0H 41H, dev, 42H, 12H, aaH, bbH, ccH, ddH, ... eeH, sum F7H
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H - 1FH Initial value is 10H(17))
42H Model ID (GS), 45H
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 transmit-
ted data
ccH Address LSB : lower byte of the starting address of the transmitted
data
ddH Data : the actual data to be transmitted. Multiple bytes of
data are transmitted starting from the address.
: :
eeH 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 Section 3 (page 193).
* 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 section 5 (page 207).
Section 2. Transmit data
■ System Realtime Message
● Active sensing
Status
FEH
* This will be transmitted constantly at intervals of approximately 250 ms.
■ System exclusive messages
"Identity Reply" and "Data Set 1 (DT1)" are the only System Exclusive messages
transmitted by this unit.
When an appropriate "Identity Request Message" and "Data Request 1 (RQ1)" mes-
sage are received, the requested internal data will be transmitted.
❍ Identity Reply [Pro]
Status Data byte Status
F0H 7EH, dev, 06H, 02H, 41H, 42H, 00H, ddH, ddH, ssH, ssH, ssH, ssH F7H
Byte Explanation
FOH 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)
42H Device family code (LSB)
00H Device family code (MSB)
ddH Device family number code (LSB)
ddH Device family number code (MSB)
ssH Software revision level
ssH Software revision level
ssH Software revision level
ssH Software revision level
F7H EOX (End of Exclusive)
* Reply the message by the unique device ID (dev) when the device has received
the "Identity Request Message" in the Broadcast.
❍ Data set 1 DT1 (12H)
Status Data byte Status
F0H 41H, dev, 42H, 12H, aaH, bbH, ccH, ddH, ... eeH, sum F7H
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H-1FH, Initial value is 10H)
42H Model ID (GS)
12H Command ID (DT1)
aaH Address MSB: upper byte of the starting address of the data to be sent
bbH Address: middle byte of the starting address of the data to be sent
ccH Address LSB: lower byte of the starting address of the data to be sent.
ddH Data: the actual data to be sent. Multiple bytes of data are transmitted in
order starting from the address.
: :
eeH 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 Section 3 (page 193).
* Data larger than 128 bytes will be divided into packets of 128 bytes or less, and
each packet will be sent at an interval of about 40 ms.
* Regarding the checksum please refer to section 4 (page 207).
There are two ways in which GS data is transmitted: Individual Parameter
Transmission (Section 3 page 193) in which individual parameters are transmitted
one by one, and Bulk Dump Transmission (Section 4 page 205) in which a large
amount of data is transmitted at once.