Omron V680-CA1D User Manual page 66

Section 4
Reading from/Writing to Tags
AUTO READ (AR)
This command reads data from the Tag when the Tag enters the communications area. The Controller
returns a response when communications between the Controller and Tag has been completed. The
host device cannot send other commands until either a response is received or processing is aborted
using the COMMAND PROCESSING ABORT (AA) command.
Command
Controller No.
×
@
3
Name
Data type
Antenna designation
Start address
Number of read bytes
Response
Controller No.
×
@
3
Name
End code
Read data
• Example
Reading two bytes of data (hexadecimal code) from address 0010h in the Tag in the communications
area to Controller No.2.
Command
Controller No.
@ 0
3
Response
Controller No.
0
@
3
Heat-resistive RFID System
64
User's Manual
Command Data Antenna
code type designation
×
A/H 1
A R
2 1 1
Specifies the code format when sending the read data response.
A: ASCII
H: Hexadecimal code
Always 1
Specifies the start address of the area in theTag from which data is to be read from in 4-digit hexa-
decimal code.
Setting range: 0000h to 03E7h
Specifies the number of bytes to be read from the Tag in 2-digit hexadecimal code.
The number of bytes that can be read at one time is as follows:
Setting range
ASCII: 256 bytes (256 characters), set value: 01h to FFh
Hexadecimal code: 128 bytes (256 characters), set value: 01h to 80h
Command code End code
×
A R 0 0
2 2
Indicates the execution result for the command.
Contains the data read from the Tag.
The number of characters is the number of read bytes for ASCII, and the number of read bytes × 2
for hexadecimal code.
Command Data Antenna
code type designation
2 A R H 1
2 1 1
Command code End code
2 0 0
A R
2 2
Number of
Start address read bytes
× × × × ×
4 2
Details
Read data FCS
×
n 2
Details
Number of
Start address read bytes
0 0 1 0 0
4 2
Read data FCS
2 2
1 1 5
2
FCS Terminator
× × × *
CR
2 2
Terminator
× *
CR
2
FCS Terminator
*
2 A 6 CR
2 2
Terminator
*
CR
1
2