Omron V680-CA5D01-V2 User Manual page 136

LARGE READ (ER)
The LARGE READ command reads up to 8 KB of data from a Tag. If there is no Tag, the ID Controller
returns an error response with an error code of 72 (Tag missing error).
1:1 Protocol
Command
Antenna
designation
Communi-
Data
cations
Command desig-
code designation
nation
× × ×
E R A/H 1/2
1 1
2 2
Communications
designation
Data designation
Antenna designation
UID
Read area start address
No. of bytes to read
Response
Response When the Read Data Consists of 2,048 or Fewer Characters
Antenna
Resend flag
Command desig-
End code
code nation
× ×
E R 0 0 0
2 2
1 1
Read area start
UID
address
...
× × × × × ×
0 or 16 4
Specifies the method of communications with the Tag.
Communications designations other than single trigger (ST), single auto (SA), single input trigger
(SI), and selective (SL) cannot be used.
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 to FFFF
H H
Specifies the number of bytes to read from the Tag in 4-digit hexadecimal.
Up to 8,192 bytes can be read with one command.
Setting range: 0001 to 2000
H H
• 1000 Byte Tags (V680-D1KP@@)
ASCII: 1000 bytes (1000 characters)
Hexadecimal: 1000 bytes (2000 characters)
• 8-/32-KB Tags (V680-D8KF68/-D32KF68)
ASCII: 8192 bytes (8192 characters)
Hexadecimal: 8192 bytes (16384 characters)
UID
Read data
... ...
× × × × ×
0 or 16 n
No. of bytes to read
Terminator
× × × × × *
CR
4 2
• 2000 Byte Tags (V680-D2KF@@)
ASCII: 2000 bytes (2000 characters)
Hexadecimal: 2000 bytes (4000 characters)
Terminator
*
× ×
CR
2
SECTION 5
Communications
RFID System
133
User's Manual