Omron V750-BA50D04-SG-MY User Manual page 49

3) Multi Once
The reader reads multiple tags for a specified period. At the end of the specified period, it returns read results
and finishes the transaction. If the reader does not detect any tag during the specified period, it returns a
response meaning there is no tag.
< A sequence when the reader detects tags for the specified period.>
Period (Timeout)
Command Command
Read tag Read tag
Host Host
Reader Reader
Detecting and reading tag Detecting and reading tag
Tag Tag
< A sequence when the reader carries out the transaction and there is no tag. >
Command Command
Read tag Read tag
Host Host
Reader Reader
Detecting and reading tag Detecting and reading tag
Tag Tag
Response Response
Tag No.:3 Tag No.:3
Tag ID:A,B,C Tag ID:A,B,C
Process Process
Tag Tag Tag Tag Tag Tag
A A B B C C
Period (Timeout)
Response Response
Tag No.:0 Tag No.:0
Tag ID:None Tag ID:None
Process Process
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At the end of the
specified period , the
reader returns a response
(reporting the read tags'
data) to the host.
At the end of the
specified period, the
reader returns a response
(reporting "no tag") to
the host.