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Appendix A. Glossary of PakBus Terms

A-2

CVI Abbreviation for Communications Verification

Interval.

Directed Packet A relative term; from the vantagepoint of a

particular PakBus device, a directed packet is a

packet that is addressed to the particular PakBus

device. It is also referred to as “addressed

communications.”

Dynamic Link A learned route, distinguished by the fact that the

PakBus device addresses exist in one another’s

neighbor lists.

Edlog The software editor for non-CRBasic datalogger

program creation and edition. Supports mixed

array, Table Data, and PakBus programs.

Expect More A low-level indication in the packet header of

whether or not the function being accomplished by

the packet is finished or will involve more packets

to come.

Flat Map LoggerNet Setup device map construction where

all PakBus devices are children of the PakBusPort

(instead of coming off the device above).

Forced Route A route that is determined entirely by Neighbor

Filter potential neighbors instead of beaconing.

Goodbye Message The message broadcast by a PakBus device if its

PakBus address changes. A Goodbye Message is

sent out all ports having a neighbor, enabling

network routers to learn the change.

Header The leading part of a PakBus packet containing

such information as: source, destination, link

status, etc.. See PakBus Concepts section.

Hello Exchange The sending out of a hello command packet by one

PakBus device to another device, and the receiving

of the hello response to that packet from the

neighbor. Only a hello exchange can establish two

devices as neighbors.

Hello Message A discovery packet sent to a potential neighbor or

sent in response to a beacon. Sending a hello

message is sometimes referred to as “hello-ing.”

Hop A link in a communication path. Communication

with a neighbor.

Hop Metric A measure issuing from a hello exchange

indicating the maximum response time to obtain a

response from the other node.

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