22
SERIAL PROTOCOL USAGE
Controlling power
Main zone and zone 2 power can be controlled separately with
commands
!POWERONMAIN<CR>
,
!POWEROFFMAIN<CR>
,
!POWERONZONE2<CR>
and
!POWEROFFZONE2<CR>
.
Please note that zone 2 setup has a power setting that can be set to
“Follow Main” or “Independent”. When this power setting is set to “Follow
Main”, zone 2 power commands control also main zone power and vice
versa.
Command
!POWER?<CR>
is used to get the current power status of the
system. The response for this command is
!POWER(
X
)<CR>
, where the
X
can be 0, 1, 2 or 3. This response will be sent automatically whenever
power status changes if feedback level is 1 or higher. Response number
1
means that only main zone is turned on, number
2
means that only zone
2 is turned on and response number
3
means that both main zone and
zone 2 are turned on.
Response number 0 means that the system is powered down. Please
note that response
!POWER(
0
)<CR>
will only be received when the
system is powering down and feedback level is 1 or higher. There will be
no response for power query command when the system is powered
down. It is still possible to turn the device on using commands
!POWERONMAIN<CR>
or
!POWERONZONE2<CR>
. When the system
has booted up, there will eventually be a response about power status
change if feedback level is 1 or higher.
Controlling volume
Commands
!VOL+<CR>
and
!VOL-<CR>
have the same effect as
pressing volume up/down buttons from the IR remote control.
Commands
!VOL+(
X
)<CR>
and
!VOL-(
X
)<CR>
are used to increase or
decrease volume by certain amount. The
X
in the commands can be
anything between 0 and 999 (0dB – 99.9dB).
Command
!VOL(
X
)<CR>
is used to set the volume to some specific
value. The
X
in the command can be -799 – 200 (-79.9dB – 20.0dB).
Commands
!MUTEON<CR>
,
!MUTEOFF<CR>
and
!MUTE<CR>
are used
to set mute, clear mute and toggle mute respectively.
Command
!VOL?<CR>
is used to get the current value of the main zone
volume. The response for this command is
!VOL(
X
)<CR>
, where
X
can be
-799 – 200 (-79.9dB – 20.0dB). Please note that if verbosity level 1 or
higher is used, volume information will be updated to the serial interface
automatically. There is always at least 100ms time period between the
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