Rodgers PR-300S Owner's Manual page 133

.Universal Realtime System Exclusive Messages
OMaster Volume
Status Data Byte
FOH 7FH. 7FH. 04H, OIH.IlH. mmH
Status
7FH
Byte
FOH
7FH
7FH
04H
OIH
mm,11
F7H
Description
Exclusive status
ID number
ID of target device
sub-IO#I
sub-I 0#2
Master Volume
EOX
<Universal Realtime message)
( Broadcast)
(Device control message)
(Master Volume)
00 OOH - 7F 7FH (0 - 16383)
(End of Exclusive)
*The LSB (IlH) is ignored (value=O)
*Oevices whose "Rx.Sys.Ex.SW = OFF won't recognize this message.
• Data Transfer
The PR-300S can receive the various parameters using System Exclusive messages of the following
data
format. Also, it will transmit the messages
shown below if there were previously recorded.
GS Common Exclusive messages using Model 10 = 42H and Device 10
=
17 (lOH).
ORequest data I RQ I
This message is sent out to request the remote device to send back the required data.
It contains data for the address and size that specify designation and length, respectively.
On receiving a proper RQ I message for the device. tbe device wililransmit a "Data set I (OTI)" message. which contains the requested data.
Otherw.ise. the device will not send anything.
Status
FOH
Data Byte
41 H. IOH, 42H, II H. aaH, bbH. cch. ssH. uH. uuH. sum
Status
F7H
Byte Description
FOH Exclusive status
41H
Manufacturer's ID
IOH Device ID
42H ModcllD
IIH Command ID
aaH
Address MSB
bbH
ccH Address LSB
ssH Size MSB
uH
uuH Size LSB
sum Checksum
F7H EOX
(Roland)
(10H)
(GS)
(RQ1)
(End of Exclusive)
*The PR-300S only recognizes the RQI messages whose address and size match the Parameter Address Map.
*The error checking process uses a Checksum.
OData set I DTI
This message corresponds to the actual data transfer process.
On receiving a DTI message. the device writes the data to internal memory according to the address.
Status
FOH
Data Byte
41 H. IOH. 42H. 12H. aaH. bbH. ccH. ddH •.... eeH. sum
Status
F7H
Byte
FOH
41H
IOH
42H
Description
Exclusive status
Manufacturer's ID
Device ID
ModellD
(Roland)
(dev:
OOH -
I FH (1-32) The default value is IOH
(17).)
(GS)
125