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PakBus Networking Guide

1. Introduction

We know the advantages of email vs. a telephone conversation:

• A real time connection is not necessary as the network accepts messages at

any time.

• Network devices have buffers to handle multiple messages on the network.

• The network itself intelligently optimizes routes.

• Backup routes are possible.

In similar fashion, PakBus improves upon traditional connection-based

datalogger communications. PakBus devices such as LoggerNet and

dataloggers with a PakBus operating system communicate by putting packets of

data onto the network. Packets have destination and source addresses and are

size limited to, typically, 1000 bytes. In the Quick Start example network, to

collect data from a CR205, LoggerNet sends a Collect Data packet to the

CR10XPB router which passes it on to the CR205. The CR205 sends back

Collect Data Response packets until data collection is complete.

PakBus gives dataloggers the ability to concurrently communicate with

multiple peripherals at the same time.

PakBus networks have the distributed routing intelligence to continually

evaluate links, optimizing delivery times and, in case of device failure, allowing

automatic switchover to a configured backup route.

Guide Summary

Quick Start, Section 2, introduces PakBus and steps through the setup of a

small PakBus network.

Choosing a Network Configuration, Section 3, summarizes PakBus basics and

provides information toward choosing the best approach to your application

network.

Sections 4, 5, and 6 show how to set up PakBus devices (LoggerNet,

dataloggers, and communications peripherals), and gives descriptions of

PakBus instructions for the CR10X, CR510 and CR23X.

PakBus Concepts, Section 7, provides more detail regarding PakBus devices

and fundamentals.

Troubleshooting, Section 8, helps to identify problems during the learning

process.

Appendix A is a Glossary of PakBus networking terms used in this guide.

Appendices B to H present examples of various types of PakBus networks.

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Campbell RF410 Bedienerhandbuch Seite 7