User's Manual

Table Of Contents
6.3 ABx Standard Protocol
The ABx standard is a binary protocol, word (2-byte) oriented, so the syntax
table reports the Most Significant Byte (MSB) and the Least Significant
Byte (LSB). In the serial transmission, the MSB is transmitted first.
ABxS Command 4 (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 then proceed to 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 LRP830 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 LRP830 will return a syntax error.
Field Remarks
Command Command number in hex preceded by AAH
Start Address The tag address where the fill will start
Fill Length The number of tag addresses to be filled in bytes
Timeout Timeout value given in 1 ms units (1EH - FFFEH)
Data Value Byte The byte to be used as fill
Message Terminator FFFFH
Copyright © 2000 Escort Memory Systems
LRP830-Series Long-Range Passive Reader/Writer
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6.4 ABx Standard Protocol