Omron V600 Series User Manual page 88

Section 5
Communications
EXPANSION READ (XR)
For EXPANSION READ, the ID Controller reads up to 2 KB of Data Carrier memory data by dividing
the data into frames. If there is no Data Carrier in the communications area, an error response with an
error code of 72 (Data Carrier missing) will be returned.
The host device cannot send commands to the ID Controller until all response frames have been
returned. (Excluding the AA command and XZ command.)
■ 1:1 Communications
Command
Data code
specifica-
Command code tion
x R A/H
2 1
Data code specification
R/W Head No.
Read area start address
No. of read bytes
Response
Less Than 251 Characters in Read Data
End code
Command code
x R 0
2 2
End code
Read data
RFID System
86
Operation Manual
R/W Head No.
Read area start address
1/2 x x x x x
1 4
Specifies the type of code in which to send the read data in the response.
A: ASCII
H: Hexadecimal
Specifies the Read/Write Head with which to communicate.
1: Read/Write Head 1
2: Read/Write Head 2
Specifies the first address from which to read data from the Data Carrier as a four-digit hexadeci-
mal number.
Specifiable range: 0000H to FFFFH
Specifies the number of bytes of data to read from the Data Carrier as a four-digit hexadecimal
number. Up to 2048 bytes can be read with one command.
Specifiable range: 0001H to 0800H
• ASCII specification: 2048 bytes (2048 characters)
• Hexadecimal code specification: 2048 bytes (4096 characters)
Read data Terminator
0 x x x x
n
Indicates the results of command execution. An end code of 00 is returned for a normal end.
Refer to End Codes for more information.
p.135
The data read from Data Carrier memory. The number of characters will be the same as the number of
read bytes for ASCII data and twice the number of read bytes for hexadecimal data.
No. of read bytes Terminator
x x x * CR
4 2
* CR
2