User Manual Part 2

RFID Interface
98
LRP820S-Series Long-Range Passive Reader/Writers
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ABx Fast Command 04H: Fill Tag
DESCRIPTION
Fill an RFID tag with a one Byte value over multiple contiguous
addresses.
DISCUSSION
This command is commonly used to clear an RFID tag's memory. It
writes a one-Byte value repetitively across a specified range of tag
addresses. The fill function requires one data value Byte, a starting
address, and a fill length. It will fill the tag with the data value Byte,
starting at the specified start address for the specified number of
consecutive Bytes. When Fill Length is set to 0, the controller will write
fill data from the start address to the end of the tag's memory. The
timeout value is given in 1 msec increments and can have a value of
1EH to FFFEH (65,534 ms). When the timeout is set to 0, the
controller will return a syntax error. When the Fill Length extends
beyond the last Byte in the tag, the controller will return error 21H
.
Field Content
Header 0202H