Echelon SmartServer 2.2 - Manual (Page 299)

300 Using the SmartServer as Network Management Tool
Format
Description Displays the SNVT, UNVT, SCPT, or UCPT used by the data point,
and it specifies the format (e.g., SI metric or US customary) used if
the type has multiple formats such as SNVT_temp_f. The format
description is displayed in the following format: #<program
ID>[scope selector].<type name>.
For data points with multiple formats such as SNVT_temp_f, you
can click the arrow to the right to select a different format defined
for that data type from the list that appears. Using a SNVT_temp_f
data point for example, you can click the arrow to change the format
to #US, #SI, or #US_Diff.
For static data points with changeable types or dynamic data points,
you can change the data point's type and/or format in the Select
Types dialog that you can open from the Format Description
property in the data point's Setup – Data Point Driver Web page.
To open this Web page, click the Driver option above the
navigation pane on the left side of the SmartServer Web interface,
and then click the data point.
This property is only displayed in Driver mode; it is not displayed
in General mode.
Poll Rate Displays the frequency in which the SmartServer polls the data
point. The typical minimum poll rate is 30 seconds; the maximum
poll rate is 1 second. The default poll rate is 0 seconds, which
means polling is disabled.
In Driver mode, you can change the poll rate. This property is not
displayed in General mode.
6. Click Submit to save any changes.
Installing L
ON
W
ORKS
Networks
You can use the SmartServer to install L ON W ORKS networks. The advantage of installing a network
with the SmartServer is that it can install devices with minimal user input. To install a network, you
only need to acquire the Neuron IDs of the devices to be installed, select the devices to be installed,
and then enable the Smart Network Management option in the Setup - LON Device Driver Web page
of one of the selected devices. The SmartServer will then automatically fetch the program IDs of the
devices, download the appropriate device applications based on the program IDs, load and instantiate
the device interface files based on the program IDs, commission the devices, reset the devices, and
then start the device applications.
You can install networks under a number of installation scenarios. Installation scenarios include
engineered system installation, ad-hoc installation, and a combination of both. The best scenario for a
given network depends on many factors including the skill level of the installer, desired flexibility for
the network, and the end-user requirements.
With an engineered system, you design a network offsite with OpenLNS CT, the SmartServer
OpenLNS tree, or another OpenLNS application, or if you are installing a small network, you can
design the network with the SmartServer tree in standalone mode. If you are using the SmartServer to
install an engineered system, you can use the OpenLNS tree if you intend on using OpenLNS network
management services, or you can use the SmartServer tree with the SmartServer operating in
standalone mode. Anetwork being run in standalone mode can support up to approximately 300
devices (for FT-10 networks, you need to attach a physical layer repeater to the network to exceed the
64-device limit posed by the physical channel). Once you are onsite, you can attach the SmartServer
to the network and install the devices. The engineered system installation scenario makes installation
quick, easy, and error-free because most of the time-consuming data entry and processing is done