Omron V680S-HMD63-ETN User Manual page 284

Section 11
Appendices
V680-D1KP66T-SP
 Influence of Metal at Back Surface
The communications range will decrease if there is metal at the back of the V680-D1KP66T-SP 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 V680-D1KP66T-SP
(%)
100
90
80
70
60
50
40
30
20
10
0
Metal
Non-metallic material
V680S-HMD66-ETN and V680-D1KP66T-SP
(%)
100
90
80
70
60
50
40
30
20
10
0
Non-metallic material
RFID System
282
User's Manual
(Modbus TCP)
20 40 60 80 100 120
Distance (x) from surrounding metal
Reader/Writer
RF Tag
Y
Communications
range
X
20 40 60 80 100 120
Distance (x) from surrounding metal
Reader/Writer
RF Tag
Y
Communications
range
Metal
V680S-HMD64-ETN and V680-D1KP66T-SP
(%)
100
90
80
70
60
50
40
30
20
10
140 (mm) 0 20
Reader/Writer
Metal on back
Metal
Non-metallic material
140 (mm)
Metal on back
X
40 60 80 100 120 140
Distance (x) from surrounding metal
RF Tag
Y
Communications
range
X
(mm)
Metal on bac