Omron V680-CA5D01-V2 User Manual page 139

SECTION 5
Communications
READ TAG MEMORY ERROR CORRECTION (QR)
Reads Tag data from the area written by the WRITE TAG MEMORY ERROR CORRECTION (QW)
command, and performs 1-bit error correction. Be sure to read the same area that was written by the
QW command.
1:1 Protocol
Command
Communi-
cations
Command
designation
code
×
Q R
2 2
Communications
designation
Data designation
Antenna designation
UID
Read area start address
No. of bytes to read
Response
Communications Designation Other Than PA or PI
Command
End code
code
Q R 0
2
Note: When using the multi-access trigger communications designation (MT), the ID controller returns
an end code of 03 after communicating with all Tags.
Communications Designation of PA or PI
Command
End code
code
0 1
Q R
2 2
Antenna designation
UID
Read data
RFID System
136
User's Manual
Antenna
designation
Data
desig-
UID
nation
...
× × × ×
A/H 1/2
1 1 0 or 16
Specifies the method of communications with the Tag.
Refer to Communications Designation Function for details on the communications designation.
p. 103
Specifies the code format when sending the read data response.
"A": ASCII
"H": Hexadecimal
Specifies the Antenna with which to communicate.
"1": Antenna 1
"2": Antenna 2
A unique identifier used to identify Tags.
Added only for the selective communications designation (SL).
Specifies the start address of the area in the Tag from which data is to be read from in 4-digit
hexadecimal.
Setting range: 0000
Specifies the number of bytes to read from the Tag in 4-digit hexadecimal.
Up to 510 bytes can be read with one command.
Setting range: 0001
• ASCII: 510 bytes (510 characters)
• Hexadecimal: 510 bytes (1,020 characters)
Antenna
Resend flag
desig-
UID
nation
...
× × × ×
0 0
2 1 1 0 or 16
Antenna
Resend flag
desig-
Terminator
UID
nation
... *
× × × × ×
0
1 1 0 or 16
Specifies the Antenna with which to communicate.
"1": Antenna 1
"2": Antenna 2
Note: If a host communications error (other than error code 15) is generated, a "0" will be added.
Added when the ADD UID (US) command is set to add a UID, or when a multi-access communi-
cations designation (MT/MR) is specified.
The data read from the Tag.
The number of characters will be the same as the specified number of bytes to read for ASCII
data and twice that number for hexadecimal data.
Read area start
No. of bytes to read
address
× × × × × × ×
4 4
to FFFA
H H
to 01FE
H H
Read data Terminator
...
× × × × × *
n 2
CR
2
Terminator
× × *
CR
2
CR