Encompass 4 Reader System Guide
7-26
Select RF Control Algorithm). If presence without tag reports is enabled (#6901
Enable Presence without Tag Reports), the reader transmits a report if a presence is
detected without the subsequent acquisition of a valid tag.
Note: RF timeout values vary depending on the operative tag read mode and the type
of tag in the read field. All times are approximate.
Reader message:
PRST P<0 to 1> D0 A<0 to 2> T<0 to F> I<0 to 1>
where
P0 Presence without tag reports disabled (factory default)
P1 Presence without tag reports enabled
D0 Minimum presence true period of 0 ms (fixed)
A0 RF off on timeout only
A1 RF off on timeout or tag
A2 RF off on timeout or presence condition false (factory default)
T0 RF timeout of 0 ms (always expired)
T1 4 ms
T2 8 ms
T3 12 ms
T4 20 ms
T5 24 ms
T6 32 ms
T7 48 ms
T8 60 ms
T9 92 ms
TA 152 ms
TB 300 ms
TC 452 ms
TD 600 ms
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