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utomatIon
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ntegratIon
Concert avr-
7 /
avr-
9
RS-232 Serial Control
You must set the external RS-232 control system serial port of your control
system to match the data communication speed and format of the Concert
AVR-7 / AVR-9. If these settings are incorrect, the Concert AVR-7 / AVR-
9 will not respond to the commands.
Concert AVR-7 / AVR-9 communication parameters:
Baud Rate:
38,400
Start Bit:
1
Data Bits:
8
Stop Bit:
1
Parity:
None
Flow Control:
None
Cable Wiring
The cable wiring to connect the Concert AVR-7 / AVR-9 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-7 / AVR-9 and vice versa on
the Receive Data line on the controller system. Connect the signal grounds
on the control system and the Concert AVR-7 / AVR-9 together. The RS-
232 connection on the Concert AVR-7 / AVR-9 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-7 / AVR-9 to a standard PC serial com port;
wire the cable in a ‘null modem’ arrangement using the appropriate serial
cable.
