User Manual Part 2

RFID Interface
LRP2000 Long Range Passice Reader/Writer
129
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ABxF Command 87H: Read Tag SN All
DESCRIPTION
This command retrieves the 8-Byte tag serial number from all tags-in-
field or those with the specified Family ID.
DISCUSSION
Each ISO-15693 compliant tag has an unique (over 280 trillion
possibilities) serial number. This number can not be changed and is
not part of the available read/write address space. A special
termination packet is sent when the timeout expires. A response is
returned when the timeout expires.
Field Content
Header 0202H
Command Size Packet length in Bytes excluding the header, command
size, checksum and terminator Bytes. 0005H for this
command
Command 87H
Family ID Tag Family ID - 00H = all tags
Reserved Ignored, set to 00H
Timeout 2-Byte timeout value in 1 ms increments (1EH - FFFEH)
Checksum Optional Checksum
Terminator 03H