Nexcom NIO200 HAG, User Manual

Page: 17 / 120

NIO200 HAG User Guide Page 17 of 120
6.2 Topology
The Topology page displays a graphical representation of the current network topology as well as allows
users to view data about contracts and devices.
When you load the page, the topology graph is generated based on the latest topology information
available. The system continuously updates this information in the background based on notifications
sent by the Network Manager on network topology changes (device registering/leaving the network).
The time of the last topology information update is indicated at the top of the page. To view the latest
topology, press Refresh .
The registered devices are displayed on multiple levels represented as grey bands. The levels are
numbered from 0 to n, where n is a natural number. The level number is indicated in the upper left
corner of a level. The Gateway, the Network Manager, and the Access Point are found on level 0. For
the field devices, the level represents the number of hops from device to Access Point on the clock
source graph. A hop is a term used to describe the data being passed from one device to another as
a means to lengthen the transmit distance.
Communication-wise, field devices are linked directly or via other devices to the Access Point, which
is the central device in the RF network. The Access Point further relays to the Gateway, while the