Thingmagic M5e-Compact Manual do Utilizador descarregar pdf (Página 91)

Application Tag Commands

Command Set 91

Examples

For example, the syntax for a Read Tag Multiple with automatic multi-antenna search

starting with antenna1 is:

The response format for both is the following:

Tag Inventory with Select

If you want to inventory only tags meeting a specific criteria this syntax should be used.

The search criteria is specified using the Tag Singulation Fields

. If Option=0x00 is specified

it will perform the same search as the Basic Tag Inventory

syntax. Otherwise, it will return

the number of tags found matching the specified criteria. The tag EPCs and Meta Data

will be available in the Tag Buffer. If no tags are found, a fault code is returned. The

required fields are as follows:

Read Tag Multiple with Select Fields

FF 04 22 00 01 03 E8 3F 8E

SOH Length OpCode Antennas Flag Timeout (ms) CRC

FF 01 22 00 00 02 46 BA

SOH Length OpCode Status # Tag IDs Found CRC

Field Value Description

Select Options [1 byte]

The Options value of the

Tag Singulation Fields

Search Flags [2 bytes]

Read Tag Multiple Search Flags indicating antenna

usage. Bit 3 must be 0, no embedded commands.

Timeout [2 bytes] Indicates how long the command should spend

searching.

Access Password [4 bytes]

The Access Password is only used with

Tag Inven-

tory With Embedded Operations for the embedded

command. With this syntax it should be specified as

0x00000000.

Note: If Select Options=0x00 this field should be

omitted.

Tag Singulation Fields

The remaining, appropriate fields depending on the

value of Select Options.

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Thingmagic M5e-Compact Manual do Utilizador Página 91