Omron V680 Series User Manual page 305

 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-D2KF67M
V680S-HMD63-ETN and V680S-D2KF67M
(Metal at back surface: Steel)
V680S-HMD64-ETN and V680S-D2KF67M
(Metal at back surface: Steel)
V680S-HMD66-ETN and V680S-D2KF67M
(Metal at back surface: Steel)
 Measurement Conditions
• V680S-HMD63-ETN and V680S-D2KF67M
(Metal at Back Surface: Steel)
Metallic material
Reader/Writer
Non-metallic
material
• V680S-HMD66-ETN and V680S-D2KF67M
(Metal at Back Surface: Steel)
Metallic material
Non-metallic material
Reader/Writer
0 10 20
0% -1% -4%
0% -1% -3%
0% -1% -4%
• V680S-HMD64-ETN and V680S-D2KF67M
RF Tag
Non-metallic material
RF Tag
(θ°)
RF Tag inclination
30 40 50 60 70
-8% -15% -25% -50% ---
-7% -12% -21% -37% ---
-9% -18% -33% --- ---
(Metal at Back Surface: Steel)
Metallic material
Reader/Writer
Section 11
Appendices
80 90
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RF Tag
RFID System
303
User's Manual
(Modbus TCP)