Campbell Scientific PakBus Networking Guide - Manual (Page 9)

PakBus Networking Guide
the allowed neighbor list can be set in a datalogger to limit communication
between devices. Allowed neighbor lists specify neighbors to which a
datalogger will respond and cause it to ignore all other devices. However,
packets sent from a neighbor with a PakBus address greater than or equal to
4000 can not be filtered or ignored even if an allowed neighbor list has been
declared in a datalogger. Therefore, LoggerNet or similar software expects all
nodes to respond to communication packets since the software has a default
PakBus address of 4000 or greater.
The following table lists the default PakBus address assigned to specific
Campbell Scientific software products:
Software Default PakBus Address
LoggerNet 4094
PC400 4093
RTDAQ 4090
PC200W 4092
PConnect/PConnectCE 4091
Device Configuration Utility 4089
In order to communicate with devices, Campbell Scientific software such as
LoggerNet must first know the network structure. The hardware and devices
used to facilitate communication such as the COM port or phone modem along
with their required settings are entered in the software to create a network map.
Once a network map exists, the software can attempt to communicate with
devices in the network.
LoggerNet uses a virtual interface called a PakBus Port when communicating
with a PakBus datalogger. The PakBus Port contains the PakBus address for
the software. The other PakBus devices in the PakBus network are entered as
children of the PakBus port in the software network map.
FIGURE 3-2. Network Map
By default, all PakBus devices placed under a single PakBus port in the
network map are considered part of the same network. Therefore, each device
in this network branch must have a unique PakBus address. Devices that can
discover each other using the physical network regardless of their location in
the software network map will create a conflict unless unique PakBus address
are used.
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