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®
3
Command Structure - Receiving
Command processing begins when the first 0x0D (carriage return) is
received. The Concert AVR-1 will respond, either by making the change
specified with a status update answer code or by replying with an error an-
swer code, within 3 seconds. More commands, however, may be sent before
the Concert AVR-1 responds to the first command. When a command is
received, the Concert AVR-1 echoes the command back in the following
format:
<ST><ZN><CC><AC><DL><Data><ETR>
Parameter
Command
Description
s
tart
0x21
Begins transmission to
Concert AVR-1
Z
one
n
umber
0x01
Zone 1
0x02
Zone 2
0x03
Zone 3
C
ommand
C
ode
See code list
The code of
the command
a
nswer
C
ode
0x00
No problems – status
updated
0x82
Incorrect Zone
0x83
Incorrect Command
0x84
Incorrect Parameter
0x85
Invalid Command in
current state
0x86
Data length is
incorrect
d
ata
L
ength
0x01, 0x02 etc…
Number of data units
to follow
d
ata
See code list
The parameters for the
response, limited to
255
ETR
0x0D
End transmission
As an example:
Answer code for source change in Zone 1 to DVD: 0x21 0x01 0x0A 0x00
0x01 0x00 0x0D
a
uToMaTIon
I
nTegraTIon