Marani DPA240P, User Manual

Page: 33 / 36

USB / RS485 Remote Control protocol for Presets Changing and Gain / Volume controls
The following is the HEX Code for controlling the DPA240P recall presets and master volume
control :
Preset Changing
:
CMD
_
RECALL
_
PRESET
:
CMD
=1
BH
A
.
The User has to send the following Command
,
including the number of the preset to load on
the unit
:
TX
:
STX ID
_
M ID
_
N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C3H XX 1BH NPreset 00H 00H 00H 00H 00H 00H 00H F7H
XX = 0,..,3 1 ( ID device )
Npreset
=
0,
...,
23 Presetnumber
The DPA240P ' 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
RX :
STX ID _ M ID _ N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C3H XX 1BH NPreset 00H 00H 00H 00H 00H 00H 00H F7H
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
:
RX
:
STX ID
_
M ID
_
N CMD D0 D1 D2 D3 D4 D5 D6 D7 ETX
F0H C3H XX 1BH FFH 00H 00H 00H 00H 00H 00H 00H F7H
2 In - 4 Out Speaker Management System