Westermo RM-90, Reference Manual

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43 6193-3201
Boot Loader LED Indication during Startup
Serial LAN LINK ACTIVE Comment
Orange Orange Orange RED Initial Power Up & bootload
Initialisation
RED Orange Orange RED Check Config & Print Sign-on message
(If boot delay not zero)
Orange Orange Orange RED Print Configuration Table to terminal
(If boot delay not zero)
Green LAN Off RED Initialise Networking and Start Auto
Boot sequence
Orange LAN Off GREEN Wait for <ENTER> to abort Auto boot
(If boot delay not zero)
Sequence LAN Sequence GREEN Boot – loader active (auto boot
aborted or no application)
SERIAL LAN LINK GREEN Normal Operation. Application
Running.
4.2 Diagnostic Information Available
4.2.1 Connectivity
The Connectivity webpage at an Access Point lists all units for which a transmission was
received.
The received signal strength and radio data rate is listed for each Client or Access Point by
their MAC Address. The unit listed at an Access Point may not even be in the same system.
This can provide an idea of how busy the radio band is.
The connectivity page above shows the station it is receiving a valid status from. This
sending units identity is shown as its MAC address for that unit. The graph is a represen-
tation of the RSSI and indicates the value of this RSSI on each of the 50 Channels once
they are received.
The bargraph is colored. Red for too weak or too strong signal (>-50dBm), orange when
the signal is within fade margin, and green when signal is above fade margin.Note that in
the following Connectivity screen for an Access Point, the STATUS section for the Client
is “adjustable contention window”. If the Access Point is V1.18 or later, you can check if
there are pre-V1.18 units in the system – these units will not have “adjustable contention
window”. If this is the case, a compatible contention window size is set, and performance
will not be optimal. Upgrade the firmware on pre-V1.18 units to improve overall per-
formance.
4.2.2 Monitor Communications
The “Monitor Communications” function buffers the last 30 transmissions since the last
enquiry was made. If there have not been 30 transmissions since the last enquiry, the RM-
90 will wait 4 seconds for further transmissions to occur before completing the webpage.
Use of this feature together with the Connectivity webpage will reveal the variability of
communications over a link.