Omron V780-Series User Manual page 79

• If RF Tag exist in the communications range and communications with the RF Tag succeeds
After detection of the RF Tag, when the communication with the RF Tag is completed, the
Reader/Writer returns the communication result without waiting for the timeout.
Communications command
Host device
Reader/Writer
RF Tag movement
• If RF Tag exist in the communications range and communications with the RF Tag fails
After detection of the RF Tag, when the communication with the RF Tag is failed, the
Reader/Writer repeats communication until the timeout even. If the Reader/Writer cannot com-
plete communications within the timeout time, the communications results ("RF Tag communica-
tions failed") will be returned.
Communications command
Host device
Reader/Writer
RF Tag movement
Additional Information
The behavior of the RF Tag that has communicated once with the Reader/Writer depends on
the Gen2 session setting in the advanced RF communications settings. For details, refer to
Gen2 Session on page 6-26.
• No RF Tag in the Communications Range
When the Reader/Writer cannot detect the RF Tag, repeats detect an RF Tag until the timeout
even. If the Reader/Writer cannot detect the RF Tag within the timeout time, the communications
results ("RF Tag missing error") will be returned.
Communications command
Host device
Reader/Writer
RF Tag movement
UHF RFID System V780-series Reader/Writer User's Manual (EtherNet/IP
Response
"Once" communications
RF Tag
"Once" communications
RF Tag
"Once" communications
TM
Timeout
Timeout
RF Tag communications failure
Timeout
) (Z402)
6 Functions
Response
RF Tag missing error
Response
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