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CHAPTER 2

Installation

data latency and the number of calls per day in order to keep the

costs down. In a typical scenario one or two calls per day would be

a good compromise. The call itself takes about two minutes to

download data collected for one day, assuming a typical sensor

configuration. If you have many sensors and/or they are sampled

more often that usual (i.e. once every 15 minutes), then you should

set your poll schedule more often. In general, a call should not

extend beyond two to three minutes.

Note: The A733GSM/GPRS firmware has a provision to cut the

connection after approximately 700 data slots (that

corresponds to about one week of data assuming standard

sensors); this is also in order to avoid excessive telephone

costs.

An efficient way to add RTUs is to use the bulk add feature. In the

RTUs section of the Configurator, click Bulk add to display the

window shown in Figure 15.

Figure 15. Bulk add RTUs edit box

With this feature, you can create several RTU configurations,

adding them to the gateway’s list at the same time.

Editing Properties of Existing RTUs

To view or change properties of existing RTUs, select the RTU you

want to edit in the Configurator window and then click Properties.

You can also right-click an RTU and select Properties from the

pop-up. Most operations described in the previous section can

also be performed in the Edit RTU window. After making the

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Adcon A720 Guía de usuario Pagina 41