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PRINTING RFID TAGS
Figure 5-1. Data Blocks
The write tag (WT) command ASCII string is limited to 63
characters.
Each WT command ASCII string is limited to a maximum of 63
characters. For a 256 byte RFID tag, a maximum of four WT commands
containing 63 characters of data may be used.
NOTE: It is the user’s responsibility to track the 63 character maximum. If more
than 63 characters are included in a WT command, the command will fail.
The read tag (RT) command stores data in a user-specified
location.
The RT command retrieves data from an RFID tag and stores the data
in a location that the user identifies. The location is identified with a
number between 1 and 99. The user may store the result of a maximum
of 32 separate RT commands.
The RT command reads up to a specified ending block or until a
null character is encountered.
The RT command reads data from the RFID chip beginning at the block
specified in the command parameter. The command will continue to
read up to the block specified in the command parameters OR until a
null character is encountered. The RT command will not read past the
null character.
Again, refer to Figure 5-1. Reading blocks 0-3 returns “COGNITIVE
PRINTE”. Reading blocks 0 through 4 returns “COGNITIVE
PRINTERS”. Finally, reading blocks 0 through 5 returns the same
string as reading blocks 0 through 4.
Copyright © 2004, Cognitive. 29