®
39
a
utoMatIon
I
ntegratIon
C
onCert
avr
-
8 /
avr
-
6
Cable Wiring
The cable wiring to connect the Concert AVR-6 / AVR-8 to your control
system will depend on the RS-232 output connection on the controller.
Make certain that you wire the Transmit Data output on the serial control-
ler to the Receive Data on the Concert AVR-6 / AVR-8 and vice versa on
the Receive Data line on the controller system. Connect the signal grounds
on the control system and the Concert AVR-6 / AVR-8 together. The RS-
232 connection on the Concert AVR-6 / AVR-8 is a DB-9 Male connector,
labeled Control and is wired as follows:
Pin 2 Receive Data (RXD)
Pin 3 Transmit Date (TXD)
Pin 5 Ground
To connect the Concert AVR-6 / AVR-8 to a stan-
dard PC serial com port; wire the cable in a ‘null
modem’ arrangement using the appropriate serial
cable.
Command Structure - Issuing
The RS-232 serial control structure of the Concert AVR-6 / AVR-8 is a
string of hexadecimal values with a minimum of six bytes. When issuing a
command, the structure of the string is as follows: Start Transmission, Zone
Number, Command Code, Data Length, Data and End Transmission. We
will use an abbreviated form for easy reference in the following format:
<ST><ZN><CC><DL><Data><ETR>
Parameter Command Description
s
tart
0x21
Begins transmission to
Concert AVR-6 / AVR-8
Z
one
n
umber
0x01
Zone 1
0x02
Zone 2
C
ommand
C
ode
See code list
The code of the
command
d
ata
L
ength
0x01, 0x02 etc…
Number of data units
to follow
d
ata
See code index
The parameters for the
command
ETR
0x0D
End transmission
As an example:
To change the Concert AVR-6 / AVR-8 video source in Zone 1 to SAT:
0x21 0x01 0x0A 0x01 0x01 0x0D
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