Omron V680S Series User Manual page 259

V680S-D2KF67
 Influence of Metal at Back Surface of RF Tags
The communications range will decrease if there is metal at the back of the V680S-D2KF67 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-PNT and V680S-D2KF67
(%)
100
90
80
70
60
50
40
30
20
10
0 50
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Non-metallic
Communications
material
range
Metal
V680S-HMD66-PNT and V680S-D2KF67
(%)
100
90
80
70
60
50
40
30
20
10
0 100
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Non-metallic
Communications
material
range
Metal
100 150 200
(mm)
RF Tag
Metal on back
Y
X
200 300 400
(mm)
RF Tag
Metal on back
Y
X
V680S-HMD64-PNT and V680S-D2KF67
(%)
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
Non-metallic Communications
material range
Metal
Section 8
Appendices
150 200
(mm)
RF Tag
Metal on back
X
RFID System
257
User's Manual
(EtherNet/IP TM )