Omron V680S-HMD63-PNT User Manual page 268

Section 11
Appendices
V680-D8KF68A
 Influence of Metal at Back Surface of RF Tags
The communications range will decrease if there is metal at the back of the V680-D1KP68A 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-HMD64-PNT and V680-D8KF68A
(%)
100
90
80
70
60
50
40
30
20
10
0
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Metal
Non-metallic material
RFID System
266
User's Manual
(PROFINET)
50 100 150
Metal on back
Y
Communications
range
RF Tag
X
V680S-HMD66-PNT and V680-D8KF68A
(%)
100
90
80
70
60
50
40
30
20
10
(mm) 0 50
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
Metal
Non-metallic material
100 150 (mm)
Metal on back
Y
Communications
range
RF Tag
X