Omron V680S Series, Руководство пользователя

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RF Ta
g In
sta
lla
tion Prec
aut
ions
Se
ction 11
RFID System
User's Manual
(Modbus TCP)
Section 11
Appendices
V680-D1KP58HTN

Influence of Metal at Back Surface
You must consider the influence of the mounting location when mounting RF Tags.
The communications range of an RF Tag may be reduced by the influence of the surrounding objects.
The amount that the communications range decreases will depend on the materials and shapes of the
surrounding objects. As reference data, this section shows the influence of metal at the back surface of
an RF Tag.

Influence of Metal Objects
The following figure shows the percentage of decrease in the communications range when there is a
metal object at the back surface of an RF Tag.
The X axis gives the distance between the RF Tag and a metal plate. The Y axis shows the relative
communications range taking the communications range with no metal plate as 100% (i.e., it shows the
percentage of decrease in the communications range).
Material: Steel (thickness: 1.5 mm)
Shape: 295
×
295 mm
0
10
20
30
40
50
60
70
80
90
100
20 40 (mm)
(%)
Distance (x) to the metal plate in back of RF Tag
60 80 100 120 140 160 180
0
10
20
30
40
50
60
70
80
90
100
20 40
(mm)
(%)
Distance (x) to the metal plate in back of RF Tag
60 80 100 120 140 160 180
X
Reader/Writer
RF Tag
Y
Communications
range
X
Y
Communications
range
V680S-HMD64-ETN and V680-D1KP58HTN
V680S-HMD66-ETN and V680-D1KP58HTN
Communications range (range with no metal at back surface = 100%)
Communications range (range with no metal at back surface = 100%)
Metal
Non-metallic material
Metal at back surface
Metal at back surface
RF Tag
Reader/Writer
Metal
Non-metallic material