Omron V680-CA1D User Manual page 68

Section 4
Reading from/Writing to Tags
POLLING AUTO READ (PR)
When the host device sends a POLLING AUTO READ command to the Controller, the Controller
immediately returns a response to the host device indicating reception of the command. Then the
Controller waits for the approaching Tag and reads the data of the Tag when the ID Tag is in the
communications area.
When the Tag is in the communications area, the host device can use a subcommand to request the
command processing results.
Command
Controller No.
×
@
3
Name
Data type
Antenna designation
Start address
Number of read bytes
Response
Controller No.
×
@
3
Name
End code
Subcommand
Controller No.
×
@
3
Name
Data type
Antenna designation
Heat-resistive RFID System
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User's Manual
Command Data Antenna
code type designation
×
A/H 1
P 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 the Tag from which data is to be read from in 4-digit
hexadecimal 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
×
P R 7 4
2 2
Indicates the execution result for the command.
Command Data Antenna
code type designation
×
P R C/E 1
2 1 1
Specifies either to request the result of or to abort polling auto processing.
Specifies the code format when sending the read data response.
C: Request for processing results
H: Abort
Always 1
Number of
Start address read bytes
× × × × ×
4
Details
FCS Terminator
× ×
*
CR
2 2
Details
FCS Terminator
× ×
*
CR
2 2
Details
FCS Terminator
× × × *
CR
2 2 2