RFID Interface
LRP2000 Long Range Passice Reader/Writer
77
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ABxS Command 88H: Tag Search All
DESCRIPTION
Check to see if there is an RFID tag within range of the antenna.
DISCUSSION
This command will activate controller to "look" for a tag in range. As
soon as the controller finds a tag it will return a command echo to the
host. The timeout value is given in 1 msec increments and can have a
value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0,
the controller will return a syntax error. The number of tags returned
can be either 1 (tag found) or 0 (timeout expired without having found
a tag).
Field
Remarks Command
Command number in
hex preceded by AAH
Family ID Tag Family ID - 00H =
all tags
Reserved 00H
Timeout
Timeout value given in
1 ms units (001EH -
FFFEH)
Message Terminator
FFFFH
