133
RFID System
User’s Manual
SECTION 5
V680 Commands
SECTION 5
Communications
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
Response When the Read Data Consists of 2,048 or Fewer Characters
Communications
designation
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
Data designation Specifies the code format when sending the read data response.
“A”: ASCII
“H”: Hexadecimal
Antenna designation Specifies the Antenna with which to communicate.
“1”: Antenna 1
“2”: Antenna 2
UID A unique identifier used to identify Tags.
Added only for the selective communications designation (SL).
Read area start address 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
H to FFFFH
No. of bytes to read 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
H to 2000H
• 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)
• 2000 Byte Tags (V680-D2KF@@)
ASCII: 2000 bytes (2000 characters)
Hexadecimal: 2000 bytes (4000 characters)
Terminator
Antenna
designation
Command
code
Communi-
cations
designation
Read area start
address
Data
desig-
nation
No. of bytes to read
××
××
ER
××
A/H 1/2
××
244
11
××
2
2
* CR
××
UID
××
0 or 16
...
Command
Response
Read data
Command
code
Terminator
End code
Antenna
desig-
nation
Resend flag
×
ER
...
×
00
××
22 n
2
* CR
0×
11
××
UID
××
0 or 16
...
To Next Page
Loading...
