User Manual Part 2

RFID Interface
LRP2000 Long Range Passice Reader/Writer
107
DISCUSSION
This command will activate the controller to "look" for a tag in the RF
field. If the controller finds a tag it will return a command echo to the
host. If no tag is present it will return an error message. Even though
this command is grouped with single-tag commands, the presence of
multiple tags within range of the antenna will not cause errors. See
Section 6.6 for information on the error messages.
Field Content
Header 0202H
Command Size Packet length in Bytes excluding the header,
command size, checksum and terminator
Bytes. 0003H for this command
Command 08H
Timeout 2-Byte value for the time in 1 ms units (1EH -
FFFEH)
Checksum Optional Checksum
Terminator 03H
Example
Checks for an RFID tag within range of the antenna. A timeout of 2
seconds (07D0H = 2000 x 1 msec increments) is set for the
completion of the Tag Search.