Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 78)

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Link Quality
Threshold
The radio will use this threshold levels when establishing a mesh
link with other radios in the system. It represents a 0-100% level of
link quality (100 being the best). If the Link Quality is lower than the
threshold the link will be ignored.
Link Quality can be monitored on the Connectivity web page. If the
link quality is lower than this threshold, then mesh routes will not be
assigned over this link. Default value is 35
Receive Signal
Strength
Threshold
The radio will use this threshold level when establishing a mesh link
with other radios in the system. When establishing a mesh the radio
sends out a broadcast message and then monitors the signal
strength from all other nodes that respond, if any of the signal
levels are below the “Receive Signal Strength Threshold” the mesh
link will be ignored. The default threshold is -100dBm and is used in
conjunction with the “Link Quality Threshold” above
Enable Multipath
RSSI Algorithm
Multipath RSSI algorithm should be enabled when the installation is
in an environment that is known to have multipath fading.
These installations are typically where units are installed inside
buildings or in environment where antenna do not have
uninterrupted line of sight or have large metallic objects that are
close to the antennas.
The multipath RSSI algorithm calculates a path RSSI that will be
used when establishing mesh links between neighbours. The
calculated link RSSI is compared to the configured RSSI threshold.
If the calculated RSSI is stronger than the threshold, then a link will
be established.
Route Request
Idle Time (Sec)
Route Request Idle Time - is the time the module will wait or hold
off between route requests messages if the route request fails to get
through to the destination. The default time is 30 seconds which
means if the module fails to communicate to its destination it will
wait 30 seconds before sending out another route request. Without
this wait time a network could easily get swamped with route
requests when a link fails to get through.
Route Threshold
(Hops)
Route Threshold - Configures the number of additional hops that
the unit reports when replying to mesh routing requests.
Can be used to configure a priority when a module is used as a
repeater. E.g. two repeater modules lay between a destination and
the source, the repeater with the lowest Route Threshold will be
used first.
The default value is 0 which will mean the module will always act as
repeater. Values between 1 and 7 will configure a priority, higher
numbers for units that are less preferred as repeaters.
Setting the parameter to 8 will means the unit will never be used as
a repeater.
Route Refresh
(Sec)
Route Refresh - is how often the module will try to find a better
(shorter) route for an existing route. This is used where network