ThingMagic M5e-Compact - Manual (Page 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.