Example with embedded write tag data – ThingMagic M5e-Compact User Manual
Page 94
Application Tag Commands
94
Command Set
Example with Embedded Write Tag Data
Here is an example request and response showing the use of
to inventory tags which meet a specific criteria and then setting the Access
password on each using
as an embedded command:
This command will inventory all tags with an EPC value ending in 0x34, which requires
adding the appropriate
to the
syntax then will use
Read Tag Multiple Embedded Response Fields
Field
Value
Description
Status
[2 bytes]
Error Code if command failed, otherwise 0x0000 for Success
Select Options
[1 byte]
Options set in the Request Command
Search Flags
[2 bytes]
Search Flags set in the Request Command
Tags Found
[1 byte]
Number of tags found and added to the
matching Select
criteria. Follows the standard criteria of adding tags the Tag Buffer. if
the Tag Buffer already has tags in it they will not be counted towards
Tags Found. However, if they match the Select Criteria they will have
the operation performed on them. For this reason it is important to
always make sure the Tag Buffer is clear before any Read Tag Multi-
ple execution to insure accurate response information.
Embedded Command Count
[1 byte]
The number of embedded commands to follow. [Currently only sup-
ports one]
Embedded Command OpCode
[1 byte]
The OpCode of the embedded command as specified in the request
command.
Operations Succeeded
[2 bytes]
Number of Embedded command operations which succeeded.
Note:
Depending on the Gen2 Session/User Mode used the
Operations Succeeded/Failed counts can be misleading since
in Session 0, for example, the tag may respond many times
during an inventory round and the command may be
attempted many times. This would result in counts higher than
the actual number of tags the operation succeeded or failed
on.
Operations Failed
[2 bytes]
Number of Embedded command operations which failed.
Note:
As noted above this number can be indicating the command
failed multiple times on the same tag. These values should be
used in combination with Tag Found and checking the Tag
Buffer to insure the operation was completed on the desired
tags.
The fields and values returned by the embedded command.