Omron V680 Series User Manual page 311

 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 V680S-D8KF67M
V680S-HMD63-ETN and V680S-D8KF67M
(Metal at back surface: Steel)
V680S-HMD64-ETN and V680S-D8KF67M
(Metal at back surface: Steel)
V680S-HMD66-ETN and V680S-D8KF67M
(Metal at back surface: Steel)
 Measurement Conditions
• V680S-HMD63-ETN and V680S-D8KF67M
(Metal at Back Surface: Steel)
Metallic material
Reader/Writer
Non-metallic
material
• V680S-HMD66-ETN and V680S-D8KF67M
(Metal at Back Surface: Steel)
Metallic material
Non-metallic material
Reader/Writer
RF Tag inclination
0 10 20 30
0% -1% -3% -7%
0% -1% -3% -7%
0% -1% -4% -10%
• V680S-HMD64-ETN and V680S-D8KF67M
RF Tag
Non-metallic material
RF Tag
Section 11
Appendices
(θ°)
40 50 60 70
-13% -24% -47% ---
-13% -22% -38% ---
-20% -39% --- ---
(Metal at Back Surface: Steel)
Metallic material
Reader/Writer
RFID System
User's Manual
(Modbus TCP)
80 90
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RF Tag
309