NI 9795 User Guide and Specifications 14 ni.com
scans for available networks, locates either a gateway or router, and
attempts to join it. If the gateway has the node in its list, the node
joins the network, downloads the latest configuration from the
gateway, and begins its normal operation of acquiring
measurement data and controlling DIO.
Since each node joins a network instead of a particular router or
gateway, it can find a new path back to the gateway in the event that
the signal is lost or blocked to its existing network route. In this
way, the mesh network is inherently self-forming and self-healing.
However, this may also cause network throughput to decrease, as
there is no way to force a router or end node to join to a particular
device in the network. Each time a node joins through a router, the
overall throughput of that node is halved, because that the node
must hop to get its messages back to the gateway. Figure 5 shows
an example of one possible mesh configuration.
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