Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 95)

94
5.2 Connectivity (WibMesh)
The Connectivity webpage displays connections and available networks. The
“Connected Devices” section displays the Destination IP Address, the relaying IP
Address, the number of hops the message is taking through the network, signal strength
and link quality along with some message related information. The readings shown are
based upon the last received data message from the device.
Figure 84 - Connectivity
Note that when updating the Connectivity webpage; ensure the page is current by
refreshing the page. It may be necessary to hold down the key while pressing the
refresh button to force your browser cache to be refreshed.
Description
Dest Destination IP Address
Next Next IP Address – This is the next address used to reach the Host
Hops Number of Hops
RSSI
RSSI (Radio Signal Strength Indication) measured in dBm which is a
negative value scaled from -40dBm (good) to -120dBm (bad). RSSI will
be displayed for the destination addresses, which are direct
neighbours. If the Destination IP is not the next hop, you will see an
RSSI value of
“~” which indicates no direct link to that station. If
Multipath RSSI is enabled (on the Mesh page), this will be a calculated
RSSI value however if the Multipath RSSI is disabled it will show the
last known RSSI value.
Qual
(Link Quality
Index)
The LQI is a logarithmic representation of the number of bit errors in the
frame that were corrected by the Forward Error Correction algorithm.
Each data bit is encoded with 7 forward error correction bits, so a 100
byte frame contains 100 * 8 bits / byte * 7 FEC bits/bit = 5600 bits. (see
below this table for details)
LQI Description
100 No Errors (or better than 1 in 100,000)