Roland GW-7 Midi Implementation Manual page 10

Roland GW-7 MIDI Implementation
●Universal Non-realtime System Exclusive Message
❍Identity Reply Message
Receiving Identity Request Message, the GW-7 send this message.
Status Data byte
F0H 7EH, dev, 06H, 02H, 41H, 07H, 02H,
nnH, 00H, 00H, 07H, 00H, 00H
Byte Explanation
F0H Exclusive status
7EH ID number (Universal Non-realtime Message)
dev Device ID (dev: 10H - 1FH)
06H Sub ID#1 (General Information)
02H Sub ID#2 (Identity Reply)
41H ID number (Roland)
07H 02H Device family code
nnH 00H Device family number code (nnH: 00H or 01H)
00H 07H 00H 00H Software revision level
F7H EOX (End of Exclusive)
3. Individual Parameter Transmission
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 Exclusive Messages
When an appropriate "Data Request 1 (RQ1)" message is received, the requested internal data will be transmitted as "Data Set 1 (DT1)".
●Data Request 1 (RQ1)
Status Data byte
F0H 41H, dev, 42H, 11H, aaH, bbH, ccH,
ssH, ttH, uuH, sum
Byte Explanation
F0H Exclusive status
41H ID number (Roland)
dev Device ID (dev: 00H - 1FH, Initial value is 10H)
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 one time will depend on the type of data, and data must be requested using a specific starting address and size.
* Regarding the checksum, refer to "5. Supplementary material", Example of an Exclusive message and calculating a checksum (p. 19).
●Data Set 1 (DT1)
Status Data byte
F0H 41H, dev, 42H, 12H, aaH, bbH, ccH,
ddH, ..., sum
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.
: :
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.
* 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 msec.
* Regarding the checksum, refer to "5. Supplementary material", Example of an Exclusive message and calculating a checksum (p. 19).
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Status
F7H
Status
F7H
Status
F7H