Dataradio HiPR-900, Руководство пользователя, Страница: 17 / 36

Selection of “master” or “remote” as well as data delivery conditions is done using the web browser.
2.3.2 RF Path and communications range
The reliable communication range of the HiPR-900 is dependent on terrain, RF (radio frequency) path
obstacles, and antenna system. To assure reliable communications, a competent professional who can de-
termine what antennae are required and whether or not a repeater is needed should study the RF path be-
tween stations.
2.3.3 COMMON CHARACTERISTICS
The networks described in this section share common characteristics:
1. The network speed (256 and 512 Kbps) varies in a network as the Master announces the speed to
use to the remote stations.
2. Transmission of online diagnostics may be enabled or disabled at any station or stations without af-
fecting their ability to communicate with other stations.
2.3.4 Basic connections
The connections required are shown in Figure 4.
While an RTU or PLC is shown in the diagram, master stations often use a PC running an application de-
signed to communicate with remote RTUs or PLCs. The Setup PC is used for both configuration and local
and remote diagnostics. It may be left connected at all times but is not required for normal operation once
the unit has been configured.
Figure 4 - Basic Setup
User’s
RTU or PLC
PD
Antenna
10-30 VDC
PoE
Antenna
Setup PC
2.3.5 POINT-TO-POINT SYSTEM
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