User's Manual

A9245-E-001 User Guide

5.0 LED Indicators

There are three LED indicators on A9245-E-001 UHF reader: OK/Err LED, TX LED, and

RX LED. These LED indicators provide information about the reader’s current

functionality status. Please see table below for detail LED definitions.

Item

Name

Description

OK / Err

LED

LED Definition

LED Color

LED Illumination Mode

System OK

Green

Flashing

System Error

Amber

Steady on for the duration of error condition

TX LED

RS-232 transmit data activity LED. When the reader is transmitting data to its host

controller, TX LED will be flashing in YELLOW. When the reader is not transmitting

data to its host controller, the TX LED should remain off.

RX LED

RS-232 receive data activity LED. When the reader is receiving data from its host

controller, RX LED will be flashing in GREEN. When reader is not receiving data from

its host controller, the RX LED should remain off.

Table 2 LED Indicator

OK / ERR LED: OK/ERR LED shows reader’s current health state. IF this LED is

flashing in GREEN, all reader’s functionalities are being carried out normally. When

ever A9245-E-001 reader receives an unrecognizable command through its RS-232 or

RS-485 interface or a command failed to execute, the OK/Err LED will light up in AMBER

for the duration of the error condition. Possible causes of the error condition might be

incorrect command, internal hardware malfunction, or bad connection of the RS-232 /

RS-485 cable.

TX LED: Whenever A9245- E-001 reader is transmitting data on its RS-232 interface, the

TX LED will flash in YELLOW for the duration of time that it is transmitting data.

Otherwise, this LED should stay off. This LED indicator can be used to diagnose the

connection between A9245-E-001 and the host device. A9245-E-001 will only transmit

on its RS-232 interface upon successfully receiving a valid command. A9245-E-001

either transmit an ACK, NACK, or data packet containing the requested information (i.e.,

tag ID). For detail information about what A9245-E-001 will transmit on its RS-232

interface, please see A9245-E-001 SDK User’s Manual.