Omron V680S Series User Manual page 216

Section 8
Appendices
 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
 Influence of Inclination
Install the Reader/Writer and RF Tags so that the Reader/Writer and RF Tags are as parallel to each
other as possible.
Communications will be possible even if the Reader/Writer and RF Tags are not parallel to each other;
however, the communications range is affected by the inclination between them as shown in the
following graphs.
 Rates of Change in Communications Range for Inclination of V680-D1KP66T
V680S-HMD64-ETN and V680-D1KP66T
V680S-HMD66-ETN and V680-D1KP66T
 Measurement Conditions
 V680S-HMD64-ETN and V680-D1KP66T
Non Metallic material
RFID System
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User's Manual
80mm min.
110mm min.
0
0%
0%
Metallic material
RF Tag
Reader/Writer
80mm min.
110mm min.
RF Tag inclination
10 20 30 40 50
-1% -3% -5% -9% -14%
-1% -3% -6% -10% -17%
 V680S-HMD66-ETN and V680-D1KP66T
Non Metallic material
()
60 70 80 90
-21% -32% -48 ---
-27% -41% -62 ---
Metallic material
RF Tag
Reader/Writer