User Guide

Table Of Contents
Gen2 Tag Commands
112
Note
The Select Options field of the Tag Singulation Fields in the request is specified
at the beginning of the command followed by the Search Flags, Timeout,
Access Password then the rest of the Tag Singulation Fields. This is different
than the typical format for Select fields. Also, this syntax always requires an
Access Password be specified. If the tags are not locked it can be set to
0x00000000
The response contains the number of tags found matching the Select criteria specified.
Use Get Tag Buffer (29h)
to access the tag EPCs and Tag Read Meta Data:
Tag Inventory With Embedded Operations
In addition to inventorying tags, Read Tag Multiple can be used to perform an operation
on each tag in a population of tags. Starting with the Tag Inventory with Select
syntax to
define the population of tags the operation is to be performed on, the Search Flag bit 3
(0x0004) can be set to indicate embedded commands are to be performed on the
inventoried commands. The required fields are as follows:
00 00 00 00 00 00 00 78 08 66
D
E
C0
Access Password Select Address (bits) Select
Data
Length
(bits)
Select
Data
CRC
FF 04 22 00 00 04 00 00 02 B7 6E
SOH Length OpCode Status Options
(EPC Mem)
Search Flags Tag Found CRC