Network Planning and Diagnostics
Troubleshooting Network Issues
SKF Wireless Machine Condition Sensor
75
Service Manual
•
If the gateway has an ACL, make sure the sensor is on the list.
•
The join process has exceeded one hour and sensors that did not join in time have
turned off.
Issue: One Sensor Rejoins Over and Over
This can be observed in the
Number of Joins
column in the Details web page. Sensors
should stay connected to the network indefinitely. Possible reasons for a single sensor
to join and drop off the network and join a
gain include:
•
A power supply problem on the sensor is resetting it.
•
The RF connectivity to its neighbors is marginal (reception is poor).
•
The RF connectivity to neighbors is highly transient and unstable (reception is good
but cuts out). The sensor is in a location where RF connectivity can be severed and
then re-established (such as in an enclosure or behind a large obstacle).
Issue: The Gateway Becomes Non-responsive
On very rare occasions, a bottleneck may occur with
commands sent to the gateway,
and the gateway may become non-responsive. When this occurs, you can flush (clear)
the gateway’s command queue to clear the bottleneck.
How to flush the gateway’s command queue:
•
In the hierarchy, select the gateway whose command queue you wish to clear.
•
Right click the gateway’s hierarchy item, and select
Flush
from the pop-up menu.
Figure 43.
Flush
the Gateway’s Command Queue.