Communications
AC-225x Series Hardware Installation Manual 33
6. Communications
Communication lines are used to upload and download information between
the access control panel and the AxTraxNG software. When the access control
panel and the computer are communicating, the system’s two LEDs flash
accordingly.
The RX LED flashes when the controller receives data
The TX LED flashes when the controller transmits data
The access control panel address is defined in the AxTraxNG software.
It is important that the DIP switch and the software are set to the same address.
There are three connection modes:
Serial Network (RS-232 or RS-485)
Modem Network
TCP/IP Network
6.1 Serial Network Connection
The computer serial port controlling the access control panel is set from within
the AxTraxNG software. The default is 9600 bps for direct connection to the
computer.
When using an RS-232 connector, only one access control panel can be linked
to each communication port on the computer. Use an RS-485 if you wish to
connect more than one panel on one communication port.
The J1 switch must be in the correct position to select the RS-232
communication.
6.1.1 RS-232 Connection to the Computer
Set the J1 switch/jumper to the RS-232 position.
Table 7: RS-232 Connection
Access Control Panel DB9 Connector DB25 Connector
GND Pin 5 Pin 7
Tx Pin 2 Pin 3
Rx Pin 3 Pin 2
The RS-232 connection can only connect a single access control panel to the
computer.
The distance between the computer and the access control panel must be no
more than 150 feet (50 meters).
If the baud rate is increased to 57600 or beyond, the distance must be no more
than 30 feet (10 meters).
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