
Section 14. PakBus Networking
14-26
Hop Metric
A measure (issuing from a hello-exchange) indicating
the expected maximum response time communicating
with a certain node. An RF401 configured for an RF
PakBus protocol factors its Standby Mode into the link
hop metric.
Hopping Sequence
The setting for an RF4xx’s pattern of spread spectrum
frequency hopping (0 – 6).
Leaf Node
A PakBus device which is not serving as a router,
although it may have the capability if so configured.
ID
Another term for PakBus Address.
Link
A direct (1-hop) communication path between two
PakBus devices.
LogView
Stand-alone software for viewing and decoding PakBus
packets in a low-level log file from LoggerNet.
M.E.
Modem Enabled.
Modem Enabled
Datalogger peripherals that are enabled by the CS I/O
modem enabled line (line 5) going high.
Neighbor
From the perspective of a particular PakBus device, a
neighbor is a device with which it has recently
communicated directly (not via router) either through
normal communications or through a hello-exchange.
Neighbors Allowed
PakBus addresses listed in a device’s neighbor filter
which the device ‘hellos’ and attempts to establish as
neighbors. A PakBus device responds to messages from
devices on its neighbors allowed list. Same as “potential
neighbors.”
Neighbor List
A PakBus device’s list of neighbor(s) that it maintains.
Leaf nodes can only have a single neighbor. Router
nodes can have many neighbors. Router devices pass
their neighbor lists (and any changes as needed) to other
routers in the network to build and maintain the
network routing system.
Neighbor Filter
A means of discovery for RF4xx (or other) networks.
A group of datalogger settings that control which
PakBus device or devices a datalogger will attempt to
establish as neighbor. A neighbor filter initiates hello-
exchanges to devices on its neighbors allowed list.
Also, it filters out network packets whose source
address is not on the list unless their PakBus Address is
≥ 4000 (LoggerNet server defaults to 4094).
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