WAGO-I/O-SYSTEM 758
Mounting
27
758-916 WLAN ETHERNET Gateway 2.4 GHz
Manual
Version 1.0.1, applicable from HW/SW Version 01/01
4
Mounting
4.1
Selecting the Installation Location
In order to use all the functions of the WEG, a radio link must be established to a
device having similar functions, for example a second WEG of the same type. If
the two devices are relatively close to one another, that is, if the distance between
them is considerably less than the potential range, the installation location and
device alignment will have comparatively little impact on the radio link. If you
wish to set up and maintain a radio link over the longest distance possible,
however, certain requirements regarding the installation of the device and the
ambient conditions must be fulfilled.
The distance between devices may not be too great. The maximum range can only
be effective under optimal conditions. A lack of line-of-sight link, or mis-
alignment of the devices will result in reduced range.
For a line-of-sight link, install the devices such that the antennas are aligned
toward one another, i.e., the marked front side of the devices face one another (see
also the figure and the antenna diagrams in the section “Connectors” >
“Antenna”).
If there is no line-of-sight link, but both devices have an unobstructed view of the
same metallic or concrete surface (such as a building ceiling), a good radio link
can be ensured through reflection.
If there is neither a line-of-sight link, nor a surface to use for reflection, for
example between devices in different rooms, align the devices as for a line-of-
sight link. The magnitude of the reduction in range for the devices in this case
depends on the amount of material, e.g., brick walls, that the radio waves must
pass through. In some circumstances, it may not be possible for the radio waves to
penetrate certain obstacles, such as fire protection walls, at all.
