Omron V680 Series User Manual page 75

 V680S-HMD64-ETN
Install the Reader/Writer with four M4 screws. Use both spring washers and flat washers.
M4 screw
Spring washer
Flat washer
When you install the Reader/Writer, prepare the metal plate shown in the following figure.
When the metal plates size is larger than the below illustration, communication range will change.
Material: Steel
65
±0.2
75
Although it is possible to use SUS, aluminum or brass in addition to steel as the metal plate, communications range is
influenced by the material. Do not use resin as the metal plate.
The recommended tightening torque for M4 screws is 1.2 N·m.
Refer to Reader/Writer Installation Precautions in Section 11 Appendices for information of surrounding metal and Mutual
Interference of Reader/Writers.
p.278
Four, M4 holes
(Unit: mm)
Installation and Connections
Mounting Hole Dimensions
Four, M4 holes
65±0.2
V680S-HMD64-ETN
Screw mounting
Metal plate
Section 4
(Unit: mm)
RFID System
73
User's Manual
(Modbus TCP)