Omron V640-HAM11 User Manual page 26

SECTION 2
Installation and Connections/Wiring
CIDRW Head
The area for communications with ID Tags varies substantially according to the installation orientations
and the background conditions (metals, noise, etc.). Check the communications area before deciding
the installation position.
For details on actual communications distances, see Characteristic Data depending on Conditions of
Use in Appendix.
Refer to page 101.
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 centerlines 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 centerline of the ID Tag.
When the center point of the antenna on the
CIDRW Head is aligned with the centerline of
the ID Tag, the communications area is sub-
stantially reduced.