User's Manual

CHAPTER 6 READER-HOST PROTOCOL
NANOSCANNER READER USER GUIDE • DOC # 8101029-000 REV A 72
© 2003 Alien Technology™
 Bit Length of Mask, as a decimal number
 Bit Pointer of Mask, as a decimal number
 Array of Hex Bytes separated by white spaces
Note: Class I tags IDs start at bit 16, not bit 0. The first 16 bits of a Class I tag are
used to store the checksum for the tag.
The Get Mask command takes no parameters but returns the three parameters
described above.
Note:
 Setting the mask to ‘All’ will address all tags currently in the RF field. i.e., “set
mask= all’
Example
Command
Response
>Set Mask = all
>Mask (BitLen, BitPtr, XX XX) = All Tags
Command
Response
>Set Mask = 8, 0, 3
>Mask (BitLen, BitPtr, XX XX) = 8, 0, 3
Command
Response
>Set Mask = 16, 0, 00 03
>Mask (BitLen, BitPtr, XX XX) = 16, 0, 00 03
Command
Response
>Get Mask
>Mask (BitLen, BitPtr, XX XX) = 16, 0, 00 03
C
LEAR TAGLIST
The Clear TagList command instructs the reader to immediately clear its internal
tag list.
Example
Command
Response
>Clear TagList
>Tag List has been reset!
NOTE: Changes made with this command will take effect immediately.
G
ET PERSISTTIME
SET PERSISTTIME
The PersistTime specifies the length of time a tag’s data will remain in the
reader’s internal list of active tags.
• Persist times are specified in seconds.
• The default setting is 10 seconds.
• Setting the persist time to a positive number (1-n) will establish a persist time
of the desired number of seconds