Omron V640 User Manual page 28

SECTION 2
Installation and Connections/Wiring
CIDRW Head
The communications area varies substantially with the installation orientation, background conditions
(such as metals and noise), and the type of ID Tag being used. Check the communications area before
finalizing the installation location.
Refer to the communications area diagrams in Characteristic Data depending on Conditions of Use.
Refer to page 105.
■ Positional Relationship between the CIDRW Head and the ID Tag
The communications area differs according to the positional relationship during communications.
Mounting
orientation
Coaxial
Parallel
Vertical
■ Data Reading and Writing
The communications distances for reading and writing are not the same; the distance is shorter for
writing. Therefore, when data is to be both read and written, take the distance for writing as the refer-
ence distance when installing the CIDRW Head and the ID Tag.
CIDRW System
24
User's Manual
Communications area (purely illustrative) Explanation
The maximum communications area is
obtained when the center lines of the CIDRW
Head and the ID Tag coincide.
The maximum communications area is
obtained when the center point of the
antenna on the CIDRW Controller is aligned
with the center line of the ID Tag.
When the center point of the antenna on the
CIDRW Head is aligned with the center line
of the ID Tag, the communications area is
substantially reduced.