V740 RFID READER/WRITER, ANTENNA
2005-09, REV0.1
OPERATION MANUAL
47 of 56
©OMRON CORPORATION 2005
2.2.6 Protocol Specific Functionality and Parameter Settings
While the standard ID_read and anti-collision searches are supported by practically all offered protocols,
therefore no protocol-specific information is required to issue a RQL search. More specific commands, such as
data_read and data_write require protocol specific information when formatting the query and interpreting the
results. The tables below provide that information.
2.2.6.1 915 MHz EPC Class 1/1B
Parameters /
Constraints
Return Value
(String)
Example
Read ()
Class1: 80 bits (64
bits ID and 16 bits
CRC, hex format)
Class1B: 112 bits
(96 bits ID and 16
bits CRC)
SELECT id FROM tag_id WHERE
protocol_id='EPC1';
Write
id
: 64 bits
or 96 bits
(hex)
new_id or error_code
with string
UPDATE tag_id SET
id=0x1234567890ABCDEF WHERE
protocol_id='EPC1' AND
antenna_id=1;
ID
Lock
id
: 64 bits
or 96 bits
(hex)
Locked Flag:
1(Fixed)
id or error_code
with string
UPDATE tag_id SET locked=1,
id=0x1234567890ABCDEF WHERE
protocol_id='EPC1' AND
antenna_id=1;
Kill
id
: 64 bits
or 96 bits
(hex)
password:
8bits(hex)
Killed Flag:
1(Fixed)
all zero id or
error_code with
string
UPDATE tag_id SET killed=1,
password=0x88,
id=0x1234567890ABCDEF WHERE
protocol_id='EPC1' AND
antenna_id=1;
Password
id
: 64 bits
or 96 bits
(hex)
password:
8bits(hex)
password or
error_code with
string
UPDATE tag_id SET
password=0x88,
id=0x1234567890ABCDEF WHERE
protocol_id='EPC1' AND
antenna_id=1;
Note:
The state of the tag becomes 'Quiet' after reading by RQL. If you wish to communicate with the tag
using a 2nd reader, a ‘Talk’ command must be sent to change the tag to active mode.(for more detailed
information about the status of the tag see 'Communication Interface Specification' for EPC1)
