Omron V680S-HMD63-ETN User Manual page 303

V680S-D8KF67
 Influence of Metal at Back Surface of RF Tags
The communications range will decrease if there is metal at the back of the V680S-D8KF67 RF Tag. If
the RF Tag is mounted on metallic material, use a non-metallic spacer (e.g., plastic or resin). The
following graphs show the relationship between the distance from the RF Tag to the metallic surface
and the communications range.
V680S-HMD63-ETN and V680S-D8KF67
(%)
100
90
80
70
60
50
40
30
20
10
0 50 100
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Communications
range
Metal
Non-metallic material
V680S-HMD66-ETN and V680S-D8KF67
(%)
100
90
80
70
60
50
40
30
20
10
0 100 200
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Communications
range
Metal
Non-metallic material
150 200
(mm)
RF Tag
Metal at back
Y
surface
X
300 350
(mm)
RF Tag
Metal at back
Y
surface
X
V680S-HMD64-ETN and V680S-D8KF67
(%)
100
90
80
70
60
50
40
30
20
10
0 50 100
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Y
Communications
range
Metal
Non-metallic material
Section 11
Appendices
150 200
(mm)
RF Tag
Metal at back
surface
X
RFID System
301
User's Manual
(Modbus TCP)