V740 RFID READER ANTENNA
NOTE. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. REV. 1.1
OPERATION MANUAL
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© OMRON CORPORATION 2004
Examples
Example 1
DECLARE query CURSOR FOR SELECT id,
antenna_id FROM tag_id WHERE id =
0x123412341234123412341234;
FETCH query;
could return
0x123412341234123412341234|2
if the tag was read by antenna 2 or
\n
if the tag was not found.
Example 2
To schedule intermittent reads with off times of 1
second starting at a specific time use:
DECLARE sleep1 CURSOR FOR UPDATE
sleep SET time_out=1000;
DECLARE real1 CURSOR FOR SELECT id
FROM tag_id;
SET auto_time real1, sleep1 = '2004-
01-22T12:43:08-05:00';
Example 3
To synchronize two Readers follow the following
instructions.
On Reader 1:
DECLARE cursor_one CURSOR FOR SELECT
id FROM tag_id SET time_out=350;
SET repeat=1000, SET auto_time
cursor_one = 0;
The first Reader will start reading for no less then 350
ms (it will probably run over to roughly 500 ms)
starting at time zero, and it will repeat the command
every 1000 ms.
On Reader 2:
DECLARE cursor_two CURSOR FOR SELECT
id FROM tag_id SET time_out=350;
SET repeat = 1000, SET auto_time
cursor_two = 500;
The second Reader will start reading for no less then
350 ms (it will probably run over to roughly 500 ms)
starting at time 500ms, and it will repeat the command
every 1000 ms.
The effect will be that each Reader will have a 50%
duty cycle with each one only active when the other
one is off.
