Werner Turck GmbH & Co. KG TNCK40 用户手册
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BL ident System – Planning
D101583 0207
BL ident
2
Transfer zone and read-write distance
The read-write head generates an alternating inductive field. The
recommended read-write distance results from the combination of
data carrier and read-write head. The appearance of the distribution
of this field depends on the design of the antenna in the data carrier
and in the read-write head.
recommended read-write distance results from the combination of
data carrier and read-write head. The appearance of the distribution
of this field depends on the design of the antenna in the data carrier
and in the read-write head.
Exchange of data is only possible within the transfer zone (Fig. 1)
with the parameters L
with the parameters L
sr
= length of the transfer zone and S
r
=
recommended write-read distance. The transfer zone reduces when
the distance from the data carrier to the read-write head increases
and is reduced to a point at the threshold distance H, i.e. as the
distance increases less data can be transferred or the speed at
which the read-write head moves past the data carrier must be
reduced.
the distance from the data carrier to the read-write head increases
and is reduced to a point at the threshold distance H, i.e. as the
distance increases less data can be transferred or the speed at
which the read-write head moves past the data carrier must be
reduced.
Figure 1
Transfer zone
Transfer zone
Note
Using the BL ident configurator at www.turck.com allows the
relationships to be simulated.
relationships to be simulated.
Sr
H
Lsr