Siemens SIMATIC Ident System Manual page 185

Maximum field strength
The reader creates the maximum field approximately 13 mm below the upper reader edge.
For the largest possible reading range the tags you want to read should move in this range.
This applies regardless of whether the horizontal or the vertical field is used.
Figure 5-33
The area of the maximum field strength and, therefore, the maximum range is identified by a
laser icon:
Figure 5-34
SIMATIC RF300
System Manual, 07/2016, C79000-G8976-C345-0x
Line of maximum magnetic field strength
Laser labeling
5.8 SIMATIC RF382R with Scanmode
Readers
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