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EXR-5/EXR-3 MIDI Implementation

3. Individual Parameter Transmission

(Model ID=42)

Individual Parameter Transmission transmits data (or requests data) for one parameter as one exclusive message (one packet of "F0 ..... F7").

In Individual Parameter Transmission, you must use the Address and Size listed in the following "Parameter Address Map". Addresses marked at "#" cannot be used as starting

addresses.

■

System Realtime Message

●

Active sensing

* 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 the EXR-5/EXR-3.

When an appropriate “Identity Request Message” and “Data Request 1 (RQ1)” message are received, the requested internal data will be transmitted.

❍

Identity Reply

* 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)

* 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.

* 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, refer to “4. Supplementary material”, Example of an Exclusive message and calculating a checksum, (page 18).

Status

FEH

Status Data byte Status

F0H 7EH, dev, 06H, 02H, 41H, 42H, 00H, 00H, 06H, 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)

00H Device family number code (LSB)

06H Device family number code (MSB)

ssH Software revision level

F7H EOX (End of Exclusive)

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)