Omron V740 Series Operation Manual page 16

Table RQL-1
Parameters/Constraints
Read ()
ID
Write (new_id)
Lock (locked)
Kill (id, password, killed)
Password (new_password)
Read (id, blocknum)
Data Write (id, new_value, blocknum)
Lock (id, addr, blocknum)
With the exception of the 'ID Read' command, all
commands are protocol and antenna specific and can
only be used with a single protocol at a time and with
a single antenna at a time. Hence all queries with the
exception 'ID Read' need to be constraint to one
protocol and one antenna using, for example
WHERE protocol_id='CC915' and
antenna_id=1
A complete example of a complete 'ID Write' query
would be
UPDATE tag_id SET
id=0x0123456789ABCDEF WHERE
protocol_id='CC915' AND antenna_id=1.
'ID Read' (enumerate tags) is, by definition, a multi-
target command, since it determines what the
individual targets are in the first place.
There are some special cases to the single-target
rule. For example, ID Write is semantically tricky –
what does it mean to target a tag if its target ID is
going to be changing? In the current state of the art,
most protocols do not support addressed ID writes (ID
V740 RFID READER ANTENNA
OPERATION MANUAL
RQL Query
SELECT id FROM tag_id
UPDATE tag_id SET id=0x1234
UPDATE tag_id SET locked=1
UPDATE tag_id SET killed=1 WHERE
id=0x1234 AND password=0x1234
UPDATE tag_id SET
password=0x1234
SELECT data FROM tag_data
WHERE id=0x1234 AND
blocknum=12
UPDATE tag_data SET data=0x1234
WHERE id=0x1234 AND
blocknum=12
UPDATE tag_data SET locked=1
WHERE id=0x1234 AND
blocknum=12
write targets all tag IDs) or disallow tag ID changes
entirely.
NOTE. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
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Meaning
Reads a tag's id
Gives a tag a new
id
Locks a tag
Kills a tag
Sets the password
of a tag
Reads raw data
from a matching
tag
Writes data to a
specific tag and
memory block
Locks a block of
memory
REV. 1.1
© OMRON CORPORATION 2004