Mircom TX3 Series Installation And Operation Manual page 10

1.1 Introducing the TX3-CX Card Access System
The TX3-CX Card Access System is part of the Mircom suite of products that
provide building ready monitoring, control and integrated security solutions for
use in the high end multi-tenant residential market.
The Card Access System addresses the need within today's high end multi-tenant
residential market for an easy-to-use tenant access system and an easy-to-use
configuration utility.
This manual provides the technician with information about the installation and
configuration of the Card Access System and explains how to configure various
components for a new system, including the modification of an existing system.
1.2 Applications
Mircom's card access system consists of a controller, two card readers and
configuration software. The controller accepts card readers with the Wiegand
interface and controls two access points or doors. A number of different card
readers are supported all of which are configurable using the configurator
software.
The Card Access System is used in a stand-alone or networked environment
using a standard RS-485, daisy chain peer-to-peer network arrangement. This
network can consist of nodes consisting of only the card access controller or a
combination of card access controller, telephones access controllers and elevator
control units (see Figure 1).
1.2.1 Wiegand interface
The Wiegand interface is a wiring standard for card readers for establishing the
connections between a card reader and the card access system. This interface is a
serial interface requiring 7 to 10 conductors for communications between the
reader and the controller. This interface also supplies 12V power to the reader.
The Wiegand compatible access card has 26 bits of information embedded onto
the card. The card reader reads and registers the card information and sends it
back to the controller in a serial bit stream.
1.2.2 Card Access System
The Mircom Card Access System system supports a proprietary 37 bit encoding
technology and a 26 bit SIA standard format, and consists of a maximum of 31
card access controllers networked together. Each card access controller can have
two card readers. The Card Access System provides battery backup and a real
time clock.
TX3-CX Card Access System Installation and Operation Manual
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Copyright 2009
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