User Guide

Gen2 Tag Commands
99
 0 - Assert (or put in state “A” for inventory flags) the target flag if there IS a match;
de-assert (or put in state “B” for inventory flags) the target flag if there IS
NOT a match.
 4 - Assert (or put in state “A” for inventory flags) the target flag if there IS NOT a
match; de-assert (or put in state “B” for inventory flags) the target flag if
there IS a match
Gen2 Target (Static)
This setting determines which inventory flag or SL flag is going to have its state
determined by the matching algorithm. Currently always set to ‘4’, indicating the Gen2
Select command modifies a tag’s SL flag.
The following table defines the currently supported User Settings and the resulting
behavior of the Gen2 Select and Gen2 Query:
Gen2 Select and Query Behavior
Select Process
The following defines how the Select process works when attempting to select tags that
match a defined criteria:
User Settings Select Behavior Query Behavior Comments
• Gen2 Session =
0,1,2,3
• Invert = 0
Gen2 Select Settings:
• Target = 4
• Action = 0
If tags match the criteria,
put their SL flag in the
‘Assert’ state; and SL of
non-matching tags into the
‘De-assert’ state.
Gen2 Query Settings:
• SEL = 3
• Target = “A”
• Session = [User
Defined]
Ask tags to respond if their
SL flag is in the ‘Assert’
state and their session
appropriate inventory flag is
in the ‘A’ state. Once a tag
responds, it puts the inven-
tory flag in the ‘B’ state, pre-
venting further matches
until the inventory flag’s
Flag Persistence Rules
returns it to the ‘A’ state.
Tag state persistence
before a Query is based
on SL flag persistence;
Tag state persistence
after a Query is based on
inventory flag corre-
sponding to the Session
used.
• Gen2 Session =
0,1,2,3
• Invert = 1
Gen2 Select Settings:
• Target = 4
• Action = 4
If tags match the criteria,
put their SL flag in the ‘De-
assert’ state; and SL of
non-matching tages into the
‘Assert’ state.