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E-1

Appendix E. CR510PB w/ P190s to

CR205s Network

In this configuration LoggerNet does 15 minute scheduled collections of a

remote CR510XPB running P190s to transfer variable values from 5 remote

CR205s. This approach results in the fastest data transfer compared to P193

and LoggerNet direct collection of CR205s.

The P190 instruction which has the CR205’s address does device discovery in

this configuration. One P190 is required for each remote.

The higher data throughput of the P190 configuration is due to the fact that one

P190 will continue to the next P190 as soon as it gets a response from the

remote. The asynchronous P190 transmissions require the CR205s to always

have their radios on resulting in higher remote power budgets compared to the

P193 approach.

There are no nodes beaconing in this configuration. LoggerNet needs no

beacon as it can discover the CR510PB using the static route from its device

map. When LoggerNet is first run, having no beacon configured it will be

unaware of the CR510PB. But when they first connect they will do a hello

exchange, swap neighbor lists, and become neighbors. LoggerNet can

thereafter communicate with any node in the network. LoggerNet will keep the

CR510PB as a neighbor until LoggerNet is closed or its router reset.

Monitoring of a CR205’s received signal strength is shown.

Hardware Setup

P190s

LoggerNet

modem

COM210

CR510PB_100

CR205_2

CR205_3

CR205_1

CR205_4

CR205_5

RF400

CSDC 7 Port

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Campbell RF410 Manual de instrucciones Pagina 91