Campbell Scientific LoggerNet Datalogger Support Software - Manual (Page 294)

Section 7. Creating and Editing Datalogger Programs
7.4.18 PakBus Settings
PakBus dataloggers have various settings that allow them to function properly
in a PakBus network. In Edlog dataloggers with PB operating systems, these
options can be set in the datalogger’s *D mode with a keyboard/display, but
they can also be set in the DLD program file
For any of the options, if the check box Do Not Change Current Settings is
enabled, then those settings will not be changed when the program is
downloaded to the datalogger.
7.4.18.1 Network
The Network option is used to set the PakBus address in the datalogger and to
configure the datalogger as a router if required. This option is the same as the
datalogger’s *D15 mode.
Address – Enter the PakBus address that should be assigned to the
datalogger. Each node (PakBus addressable device) in the PakBus
network should have a unique PakBus address.
Maximum number of nodes – Enter the total number of nodes (including
leaf node and router dataloggers, non-datalogger routers such as NL100s,
and PCs) in the PakBus network.
Maximum number of neighbors – Enter the number of dataloggers in
the PakBus network that the datalogger can communicate with directly
(i.e., without going through another router).
Maximum number of routers – Enter the number in the PakBus
network, including the PC.
While it is possible to calculate the exact number of nodes, neighbors, and
routers in a PakBus network, it is often advisable to build in some “room to
grow”. For example, you might want to add 3–4 nodes, neighbors and routers.
Be aware that each device you add means the datalogger must allocate memory
for its routing table, so if you add too many, the datalogger won’t have enough
memory left to run its program.
7.4.18.2 Beacon Intervals
This option is used to set the interval on which the datalogger will transmit a
beacon out a particular port to the PakBus network. Use the drop-down list
box to select the port over which the beacon will be transmitted, and enter the
desired interval in the Communications Interval field. This option is the same
as the datalogger’s *D18 mode.
In some networks, a beacon interval might interfere with regular
communication in the PakBus network (such as in an RF
network), since the beacon is broadcast to all devices within range.
In such cases, it may be more appropriate to use the Neighbor
Filter instead, which broadcasts a beacon only to those dataloggers
which it has not received communication from within a specified
interval.
NOTE
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