
Section 14. PakBus Networking
14-5
FIGURE 14.1-1. PakBus Graph Network View
LoggerNet will discover CR800_10 by the device map setup (static link) soon
after you click Connect. CR800_10 with its neighbor filter will discover
CR800_20. At this point a connection to CR800_10 or CR800_20 is possible
and high-level datalogger functions are available (Clock set, program send,
data collect, etc.). Go ahead and set the station clock and send a program to
CR800_10 and CR800_20.
In PakBus Graph if you right-click on CR800_20 and select Show Settings,
you can see such things as the datalogger’s Routes (routing table). The routing
table below shows that CR800_20’s Port 4 (CSDC 7) connects through a
neighbor with PBA of 10 to a device with PBA of 10. CR800_20, being a leaf
node, only shows routes to its neighbors. The “1000” is the hop metric
(maximum response time in milliseconds) of communications with that device.
If CR800_20 were configured as a router, you would see the neighbor link and
also a route to the LoggerNet server. Use PakBus Graph/Show Settings to
temporarily change CR800_20’s IsRouter setting to 1 (True). Apply and click
on Show Settings again and you will see a route added (below). CR800_20’s
new route is via neighbor CR800_10 with PBA of 10 to the LoggerNet server
with PBA of 4094. The two hop response time is 2000. See PakBus
Concepts, Routers, and glossary for more details.
To avoid unnecessary communications, nodes that don’t need to be routers
should remain leaf nodes.
If you have no measurement needs at the router location, you can remove
CR800_10 and configure the RF401 as a stand-alone router with the same
PakBus address. The stand-alone router configuration would be as follows:
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