Omron V680-CA5D01-V2 User Manual page 214

POLLING AUTO WRITE (PW)
When the ID Controller receives a POLLING AUTO WRITE command from the host device, it immedi-
ately sends a response acknowledging that the command was received. Data is then written when a
Tag approaches. During this interval, subcommand can be used to check on the command processing
results. Command can also be sent to the other Antenna during this interval.
1:1 Protocol
Command
Antenna
designation
Data
Write area start
Command desig-
address
code nation
× ×
P W A/H 1/2
2 1 1 4
Data designation
Antenna designation
Write area start address
Write data
Response
Command
End code Terminator
code
*
P W 7 4 CR
2 2 2
End code
Terminator
Write data
× × × × × × *
CR
n 2
Specifies the code format when sending the Tag write data.
"A": ASCII
"H": Hexadecimal
Specifies the Antenna with which to communicate.
"1": Antenna 1
"2": Antenna 2
Specifies the start address of the area in the Tag to which data is to be written in 4-digit
hexadecimal.
Setting range: 0000 to FFFF
H H
Specified the data to be written to the Tag.
Up to 256 bytes can be written with one command.
• ASCII: 256 bytes (256 characters)
• Hexadecimal: 256 bytes (512 characters)
Note: When hexadecimal is designated, set two characters for each byte.
Indicates the execution result for the command.
"74": Polling command received
The only error codes that may be returned here are 74 and communications errors with the host
device.
Refer to List of End Codes for information on other end codes.
p. 235
SECTION 5
Communications
RFID System
211
User's Manual