ThingMagic M5e-Compact - Manual (Page 96)

Application Tag Commands
96 Command Set
Example with Embedded Read Tag Data
When using Read Tag Multiple with an embedded Read Tag Data command an extra field
containing the requested Data from the first tag which responded matching the Select
criteria is added to the response. Up to 4 bytes of tag data for the other tags responding,
if any, is available as
Tag Read Meta Data . This command provides the added benefit over
simply using just a Read Tag Data with Select of being able to identify other tags
matching the criteria which still may need to be written or which you didn’t expect to
match. An example of sending an embedded Read Tag Data and its response is as
follows:
This command will inventory all tags with an EPC value ending in 0x34, which requires
adding the appropriate
Tag Singulation Fields to the Basic Tag Inventory syntax then will use
Read Tag Data (28h) to verify that 0x12345678 was written into the Reserved Memory
Bank starting at Word address 0x00000002 (Access Password):
The response contains the number of tags found matching the Select criteria specified
and the number of embedded command operations which succeeded and failed. Use
Get
Tag Buffer (29h) to access the tag EPCs and Tag Read Meta Data for the Tags Found.
Tags in the buffer may or may not have had successful execution of the embedded
command on them:
FF 1B 22 04 00 04 03 E8 00 00 00 00 00 00 00 78 08 34
SOH Length OpCode Options
(EPC Mem)
Search
Flags
Timeout Access Password Select Data Address
(bits)
Select
Data
Length
(bits) Select
Data
01 09 28 03 E8 00 00 00 00 00 02 02 71 FE
Embd
Cmd
Count Embd
Cmd
Lengt
h Embd
Cmd
OpCod
e Embd Cmd
Timeout
(Not Used)
Embd
Cmd
Options
(Must be
0x00) Read
Mem-
Bank Read Address (Words) Read
Word
Count CRC
FF 0e 22 00 00 04 00 04 03 01 28 00 01 00 00
SOH Length OpCod
e
Status Options Search Flags Tag
Found
Embd
Cmd
Count
Embd
Cmd
OpCode
Operations
Succeeded
Operations
Failed
11 22 33 44 DE 02
Data Read CRC