Omron V680-CA5D01-V2 User Manual page 185

SECTION 5
Communications
EXPANSION READ (XR)
The EXPANSION READ command reads up to 2 KB of data from a Tag by dividing the response into
frames. If there is no Tag in the communications area, the ID Controller will return an error response
with an error code of 72 (Tag missing error).
The host device cannot send another command to the ID Controller until all response frames have
been received. (Excluding the AA command and XZ command.)
1:1 Protocol
Command
Data
desig-
Command
nation
code
A/H
X R
2 1
Data designation
Antenna designation
Read area start address
No. of bytes to read
Response
Responses with 256 or Fewer Characters
Command
code End code
0
X R
2
End code
Read data
RFID System
182
User's Manual
Antenna
designation
Read area start
No. of bytes to read
address
×
× × × × ×
1/2
1 4
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
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 2,048 bytes can be read with one command.
Setting range: 0001
• 1000 Byte Tags (V680-D1KP@@)
ASCII: 1000 bytes (1000 characters)
Hexadecimal: 1000 bytes (2000 characters)
• 8-/32-KB Tags (V680-D8KF68/-D32KF68)
ASCII: 2048 bytes (2048 characters)
Hexadecimal: 2048 bytes (4096 characters)
Read data Terminator
... × ×
× × *
0
2 n
Indicates the execution result for the command.
"00" indicates a normal end.
Refer to List of End Codes for information on other end codes.
p. 235
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.
Terminator
*
× ×
CR
4
2
to FFFF
H H
to 0800
H H
CR
2
• 2000 Byte Tags (V680-D2KF@@)
ASCII: 2000 bytes (2000 characters)
Hexadecimal: 2000 bytes (4000 characters)