Audio Engineering Axium AX-400DA Instruction Manual - page 21
Command Content
Preset Selection
(1E)
All Zone function: Zone byte = FF
00 – Default : exit preset mode
01 – Force “Page Preset”
02 – Select Preset 1
03 – Select Preset 2
04 – Select Preset 3
05 – Select Preset 4
06 – Select Preset 5
07 – Select Preset 6
Volume BCD Format
(26)
0 – 99 in BCD format same as Front Panel display
Video Source selection
(28)
00 – S5 Video
01 – S6 Video
02 – S7 Video
03 – S4 Video
04 – S8 Video
05 – S1 Video
06 – S2 Video
07 – S3 Video
Notes:
Commands are used as notifications. If an amplifier is switched ON, it will notify the other devices on the
Control Bus by sending the Standby command (01). Any amplifiers with the same zone will take the
notification as a command and also switch ON.
When a command is sent to an amplifier it will first be transmitted on the control bus and then returned
to the PC (Home automation system). If an error occurs an error will be returned instead of the original
command. The PC (Home automation system) needs to ignore its command when it is returned
A Standby ON command implies that the amplifier is not muted, if the amplifier was previously Off, a
mute command must follow the Standby command if it is muted.
Not all Command and Data commands are covered in this document.
The expected reply for the “Send all Parameters” command (09) is >144 bytes. All command fields listed
in this document are contained in the reply. The reply also contains advanced commands not listed in
this document. The home automation or PC’s buffer should be large enough to receive and process the
144-byte reply.
If two pairs of zones are linked on an Axium amplifier, i.e. zones 1 & 2 and zones 3 & 4, and a “Link
Zone” command is sent that links zones 2 & 3, then the amplifier has the following implications:
Zone 2 links to Zone 3
Since zone 2 is no longer linked to zone 1, zone 1 shall no longer be linked to zone 2.
Since Zone 3 is no longer linked to zone 4, zone 4 shall no longer be linked to zone 3.
Example strings:
010A01:
Standby ON command for zone 10 amplifier
012A01:
Standby ON command for zone 10 preamplifier
060002:
+2db Treble setting on zone 0
03IF02:
Tuner source selection on zone 31
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