Omron V600 Series User Manual page 114

Section 5
Communications
POLLING AUTO WRITE (PW)
For POLLING AUTO WRITE, the ID Controller immediately returns a response informing the host
device that the command has been received (end code: 74 = polling command received). The ID
Controller then waits for a Data Carrier to approach and writes data to Data Carrier memory. During
this time, the host device can check on the result of the command processing by using a subcommand.
■ 1:1 Communications
Command
Data code
specifica-
Command code tion
P W A/H
2 1
Data code specification
R/W Head No.
Write area start address
Write data
Response
Command code End code
7
P W
2 2
End code
RFID System
112
Operation Manual
R/W Head No.
Write area start address
1/2 x x x x x
1 4
Specifies the type of code in which the write data is being sent.
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 to which to write data to the Data Carrier as a four-digit hexadecimal
number.
Specifiable range: 0000H to FFFFH
The data to write to Data Carrier memory. Up to 256 bytes can be written with one command.
• ASCII specification: 256 bytes (256 characters)
• Hexadecimal code specification: 256 bytes (512 characters)
Note: When using hexadecimal code, set two characters for each byte.
Terminator
4 * CR
2
Indicates the results of command execution.
74: Polling command received.
The only error codes returned here are 74 and error codes for communications errors with the
host device.
Refer to End Codes for more information.
p.135
Write data
Terminator
x x x * CR
n 2