User's Manual
Table Of Contents
A9230-D User Manual 
© AMIC All rights reserved  Page7 of 21  AMIC Proprietary / Confidential         
Rev 1.0C 
3.2 Host Connection 
AMIC’s A9230-D series RFID readers come with models incorporating three different types 
of host interface: RS-485 interface for A9230-D-001-485 and A9230-D-002-485 models, 
RS-232 interface for A9230-D-001-232 and A9230-D-002-232 models, and USB interface 
for A9230-D-001-USB and A9230-D-002-USB models. 
The models with RS-485 interface are designed for daisy-chain operations. User of this 
RFID reader can connect up to 255 reader units on the same RS-485 bus.    For models 
equipped with RS-232 and USB host interface, each reader unit must be connect to a host 
controller (PC, controlling server, or PLC) for proper operations. 
A9230-D-001-485 and A9230-D-002-485 models: 
Connect the supplied RS-485 cable to the reader by inserting the RS-45 connector to any 
of the available two RJ-45 receptacles.    Connect the flying-leads as described in 
paragraph 3.3 for host connection.    The second RJ-45 receptacle on the reader can be 
used to daisy-chain other A9230-D readers equipped with RS-485 interface. 
A9230-D-001-232 and A9230-D-002-485 models: 
Connect the supplied RS-232 cable to the reader and the host controller (PC, server 
controller, or PLC) 
A9230-D-001-USB and A9230-D-002-USB models: 
Connect the supplied USB cable to the USB receptacle on the reader.    The USB interface 
provides both DC power and data connection for the A9230-D-001-USB and 
A9230-D-002-USB readers. 










