Rosslare AC-225? AC-225IP? AC-225U Guía de usuario descargar pdf (Pagina 35)

Communications

RS-232 Connection to the Computer

Set the J1 switch to the RS-232 position.

Access

control panel

DB9

Connector

DB25 Connector

GND Pin 5 Pin 7

Tx Pin 2 Pin 3

Rx Pin 3 Pin 2

Note:

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).

RS-485 Connection to the Computer

Set the J1 switch to the RS-485 position.

Up to 32 access control panel's can be linked together and

connected to a single communication port on the computer.

Use the RS-485 interface for situations where there will be

multiple controllers connected. The serial port used to control

the access control panel is assigned within the VeriTrax AS-225

software.

The Access control panel supports the two-wire RS-485

interface. RS-485 interface enables the distance between the

Access control panel and PC to be extended up to 4000 feet

(1300) meters. 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 RS-485 to RS-232 adaptor.

AC-225 Hardware Installation and User Guide Page 34

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Rosslare AC-225? AC-225IP? AC-225U Guía de usuario Pagina 35