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)" message 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.

192

Chapter 8. Appendix