Galaxy Audio DSPOT DS-SP36, User Manual

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TX:
● USB/RS485 Remote Control protocol for Presets Changing and Gain/Volume controls
The following is the HEX Code for controlling the DS-SP36 recall presets and master volume control:
Preset Changing:
CMD_RECALL_PRESET: CMD=1BH
A. The User has to send the following Command, including the number of the preset to load on the unit:
RX:
RX:
XX = 0,..,31 ( ID device )
Npreset =0,...,23 Presetnumber
The DS-SP36's microcontroller will check if the Preset is initialized (available or not yet created...)
B. If YES, then the microcontroller will send back to the User (eg Crestron/AMX Remote Control..)
the same frame used by the command.
So in this case, if the user gets back EXACTLY what was sent, the preset is existing and loaded on the unit.
C. If the preset that the user wanted to load is NOT YET INITIALIZED (not yet created, so not available...),
the microcontroller will notify that to the user, sending back the following frame:
STX ID
_
M ID
_
N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C4H XX 1BH NPreset
00H 00H 00H 00H 00H 00H 00H
F7H
STX ID
_
M ID
_
N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C4H XX 1BH NPreset
00H 00H 00H 00H 00H 00H 00H
F7H
STX ID
_
M ID
_
N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C4H XX 1BH NPreset
00H 00H 00H 00H 00H 00H 00H
F7H
Volume Control Table