RFID Communications
121 LRP2000 Passive Reader/Writer
6.5.23 ABxF Command 96H: SN Block Write
DESCRIPTION
Command 96H writes data to a single RFID tag specified by its serial number.
DISCUSSION
This command is used to write data to contiguous areas of tag memory. It transfers up to 1 kByte of data
from the host to the controller in a single command. 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 returns a
syntax error. The SN Block Write consists of a Family ID, serial number , and start address, followed by the
data stream to be written to the RFID tag. If the write range exceeds the last tag address, the controller
returns a syntax error, 21H. It returns a response when done or when the timeout expires.
Field Content
Header 0202H
Command Size Command length in bytes excluding the header, command size, checksum, and terminator bytes.
Command 96H
Family Code Ignored byte, set to 00H
Reserved Ignored byte, set to 00H
Start Address 2-byte value for the starting tag address
Number of Bytes 2-byte value for the length of the fill in number of bytes
Timeout Timeout value given in 1 ms units
Serial Number Serial number of the tag to be addressed
Data Data to be written to the tag
Checksum Optional checksum
Message Terminator 03H