User's Manual

A9245-E-001 User Guide

RS-485 Connection

RS-485 signals are as shown in Table-1.0. A9245-E-001 reader is designed to be used

as a single RS-485 device. This means that no other RS-485 device should be

cascaded or be put on the same RS-485 bus. The A9245-E-001 reader’s RS-485

address is always fixed at 0x01 and can not be changed by user. Please connect D+

(Brown wire) and D- (Blue wire) signals to your host’s RS-485 interface.

Wiegand Interface Connection

Wiegand interface consists of 3 wires: D0, D1, and ground. A9245-E-001 is a Wigand

“Slave” which means it only output data from its Wiegand interface. Any output signals

from host should never be connected to A9245-E-001’s Wiegand interface as that might

damage A9245-E-001. A9245-E-001 reader’s Wiegand interface is a standard +5VDC

system. This means that all signals are at +5VDC with respect to the ground signal

when logic “1” is put on the Wiegand bus. Connect D0 (Black wire) and D1 (Orange

wire) to the host’s wiegand interface. Please make sure that the Ground (Red wire) is

also connected to the host’s Wiegand interface ground to ensure proper system

operation.