Werner Turck GmbH & Co. KG TNM30 用户手册

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页码 202
Description of the read-write heads
6 – 4
D101583 0207
BL ident
Read-write head antenna
 
The antenna consists of an air coil. It is used to transfer data and 
energy between the data carrier and the read-write head. The 
antenna generates an electromagnetic field which is detected by the 
data carrier within the transfer zone. A data and energy transfer is 
only possible as long as the data carrier is located in this field 
 
(Figure 2).
Figure 2
Transfer zone