V750-series UHF RFID System User's Manual - PLCeasy

2.4.5 Communication Data Control
(1) Filtering function
Filtering function enables the reader to communicate with selected tags that are suitable for pre-specified
conditions. Two filtering conditions can be registered as the pair of comparing area (Bank, Address,
Length [bit]) and data value. And the reader uses filtering condition as 1 st only, 2 nd only, 1 st and 2 nd , 1 st or
2 nd condition.
- To read pallet level tag selectively when item level tags and pallet level tag are existing together.
- To read only the selected vender’s tag if there are various kind of venders’ tags.
- To read the tags that has exclusive data format (the number of PC+EPC bit, NSI).
- To selectively read the specified tags that have certain supplier’s IC.
(2) Smoothing function
Smoothing function consists of following three types. Using this function, the reader can reduce the data
transferred between the host and the reader.
1) Prevention of response duplication
The reader can prevent duplicated responses of same tag ID in a one response.
2) Prevention of reread
Under this function setting, the tag that has been already read does not reply in the transaction period
during the communication sequence (Repeat Access Mode: Single Repeat, Multi Repeat) which
repeats its transaction,
3) Omission of no tag response
Under this function setting, the reader omits the responses if it does not read any tag in the
communication sequence (Repeat Access Mode: Single Repeat, Multi Repeat) which repeats its
transaction.
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