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Autonomous Reading Overview

Autonomous Configuration Tool v1.0 User Guide 6

Autonomous Reading Overview

Autonomous operation allows the reader to be configured for two basic behaviors:

Read On Boot

When Read & Write Settings | Autonomous Read = enabled and Auto-read on GPI =

disabled the reader will start reading within 150ms of powering up. As tags are read it will

stream the results in the .Reader Data Packet Format

To stop reading you must shut down the reader (cut power or use the moduleʼs

SHUTDOWN line).

When using SHUTDOWN line to start/stop reads, the time from setting

SHUTDOWN=HIGH to first tag read is ~150ms.

Note

This mode is recommended when maximum power savings is a high priority and

the small delay of 150ms from power on to read can be tolerated.

Read On GPI Trigger

When Read & Write Settings | Autonomous Read = enabled and Auto-read on GPI =

enabled the reader will start reading as soon as the specified GPI is set HIGH. As tags

are read it will stream the results in the Reader Data Packet Format

When GPI is low, a Temperature Status Message

will be returned approximately every

250ms (this will vary based on the Region setting used as it depends on the internal

frequency hopping algorithm which is dependent on the region of operation).

This mode allows for very fast read response to GPI triggers: less than 15ms from set

GPI=High to first tag read.

This mode will draw up to 3.2W (at 30dBm power setting) while idle (GPI=LOW). Idle

power consumption decreases with lower RF power settings.

Note

GPI Trigger mode is only recommended when very fast response time to a read

trigger event is required due to the high idle power consumption.

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Thingmagic Autonomous Configuration Tool Uživatelský manuál Strana 6