Campbell CR800 Especificaciones Pagina 309

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Section 14. PakBus Networking
14-25
Concurrent
Communications
A PakBus datalogger’s ability to communicate with
several peripherals at the same time (interleaved
transfers).
CSDC
Concurrent Synchronous Device Communications.
Refers to clocked (as opposed to asynchronous)
communications between datalogger and addressed
peripheral which can be interleaved with
communications from other addressed (or even M.E.)
peripherals.
CS I/O
Campbell Scientific I/O interface. An interface with 9-
pin connector which has the appearance of a 9-pin RS-
232 interface but differs as to pin assignments and
functions.
Directed Packet
A packet that is addressed to a particular PakBus
device, also referred to as “addressed communications.”
Dynamic Link
A proven link between two PakBus devices where the
PakBus devices have become established as neighbors
(see Neighbor) and are current in terms of their
communication verification interval. Static routes, on
the other hand, are expected to work but unproven.
Dynamic links are colored black in PakBusGraph.
Flat Map
LoggerNet Setup device map structure where PakBus
devices are all children of the PakBusPort (as opposed
to a ‘tree’ structure where each device is a child of the
device above it). A flat structure is useful where all
PakBus devices are in-range and able to be reliable
neighbors to LoggerNet or some other router.
Header
The leading part of a PakBus packet containing such
information as neighbors, source, destination, and link
state. For more information see PakBus Networking
Guide available in pdf format at
http://www.campbellsci.com under Support/Manuals.
Hello-exchange
The sending out of a hello command packet by one
PakBus device to another device, and the receiving of
the hello response from that device. Only a hello-
exchange can establish two PakBus devices as
neighbors.
Hello Message
A packet sent to a potential neighbor or a beaconing
device in an attempt to establish it as a neighbor.
Sometimes referred to as “hello-ing.”
Hop
A link to a neighbor.
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