Omron V680S-HMD63-ETN - Page 290

288
RF Tag Installation Precautions
Section 11
RFID System
User's Manual
(Modbus TCP)
Section 11
Appendices
V680-D8KF67
 Influence of Metal at Back Surface of RF Tags
The communications range will decrease if there is metal at the back of the V680-D8KF667 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.
 Mutual Interference of RF Tags
If you use more than one RF Tag, separate them by at least the interval shown below to prevent
malfunctions due to mutual interference.
If the distance between the RF tags is too short, read / write distance will be reduced.
 V680S-HMD64-ETN Reader/Writer
 V680S-HMD66-ETN Reader/Writer
0
10
20
30
40
50
60
70
80
90
100
25 50 75 100 125 (mm)
(%)
Distance (x) to the metal plate in back of RF Tag
X
Y
Communications
range
X
Y
Communications
range
0
10
20
30
40
50
60
70
80
90
100
25 50 75 100 125 (mm)
(%)
Distance (x) to the metal plate in back of RF Tag
Reader/Writer
RF Tag
Metal
Non-metallic material
Metal at back surface
Communications range (range with no metal at back surface = 100%) Communications range (range with no metal at back surface = 100%)
V680S-HMD64-ETN and V680-D8KF67 V680S-HMD66-ETN and V680-D8KF67
Metal
Non-metallic material
Metal at back surface
Reader/Writer
RF Tag
80 mm min.
80 mm min.
110 mm min.
110 mm min.