Omron V680-CA1D User Manual page 70

Section 4
Reading from/Writing to Tags
POLLING AUTO WRITE (PW)
When the host device sends a POLLING AUTO WRITE 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 writes the data when the 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. The host device can also send a command to another Read/Write Head.
Command
Controller No.
@ 0
3
Name
Data designation
Antenna designation
Start address
Number of write bytes
Response
Controller No.
×
@
3
Name
End code
Subcommand
Controller No.
×
@
3
Name
Data designation
Antenna designation
Heat-resistive RFID System
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User's Manual
Command Data Antenna
code type designation
P W H 1
2
2 1 1
Specifies the code format to be used when transmitting the response for the read data.
A: ASCII
H: Hexadecimal code
Always 1
Specifies the start address of the area from which data is to be read from the Tag in 4-digit hexa-
decimal.
Setting range: 0000h to 03E7h
Specifies the number of data bytes to be written to the Tag in 4-digit hexadecimal.
Setting range: 0000h, or 0001h to 0080h
* When 0000h is specified, the data will be written to the user area from the specified start
address until the Tag's final address.
Command code End code
×
P W 7 4
2 2
Indicates the execution result for the command.
Command Data Antenna
code type designation
×
P W 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: Processing result request
H: Aborted
Always 1
Start address
× × × × ×
4
Details
FCS Terminator
× ×
*
CR
2 2
Details
FCS Terminator
× ×
*
CR
2 2
Details
Write data
× × ×
4
FCS Terminator
× × *
CR
2 2