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Communications
6.
Communications
Communication lines are used to upload and download information
between the access control panel and the AS-525 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
Note:
The access control panel address is defined in the AS-
525AV software.
It is important that the Dipswitch and the software are set to
the same address.
There are three connection modes:
•
Serial Network (RS485)
•
Modem Network
•
TCP/IP Network
6.1
Serial Network Connection
The computer serial port controlling the access control panel is set from
within the ViTrax AS-525AV software. The default is 9600bps for direct
connection to the computer using standard RS232/RS485 adaptor (or
Rosslare MD-14).
Only one access control panel can be linked to each communication
port on the computer. Additional panels connect by daisy chaining. See
Daisy Chain on page 35.
RS485 Connection to the Computer
Up to 32 access control panel's can be linked together and connected to
a single communication port on the computer.
Use the RS485 interface for situations where there will be multiple
controllers connected. The serial port used to control the access control
panel is assigned within the AS-525 software.
Access control panel supports the two-wire RS485 interface. RS485
interface enables the distance between the Access control panel and PC
to be extended up to 4000 feet (~1300meters). The data line wiring must
be in daisy chain formatting with one control unit following another. The
first Access control panel connecting to the PC must use the MD-14 RS485
to RS232 adaptor.
AC-525 Hardware Installation and User Guide
Page 34
Содержание AC-525
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