Echelon SmartServer 2.2 - Manual (Page 257)

258 Using the SmartServer as Network Management Tool
functional blocks that include static data points. Because static data points are statically defined by the
device application, creating a static data point is simply a method for showing a data point that has
previously been hidden or deleted. Conversely, a dynamic data point is not pre-loaded on the device;
therefore adding a dynamic data point actually does modify the device interface. Some L
ON W ORKS
devices support dynamic data points (for example, the SmartServer with the v40 interface active).
Other types of devices that support dynamic data points include controllers and gateways with dynamic
interfaces. To check whether a device supports dynamic data points, click the device, click Driver,
and view the Maximum Number of Dynamic Data Points property in the Setup - LON Device
Driver Web page. Typically, you add dynamic data points to a functional block after the device has
been commissioned.
You can create L ON W ORKS connections to bind the network variables in the OpenLNS tree via the
LNS Proxy Web service, or in the SmartServer tree in standalone mode. Once you create L ON W ORKS
connections, the target network variables will receive all updates from the hub (source) network
variable in the connection.
You can also bind L ON W ORKS data points in the SmartServer tree using Web connections. The major
difference between L ON W ORKS connections and Web connections is that L ON W ORKS connections
propagate data point updates over a L ON W ORKS channel via the LonTalk Protocol or the LonTalk
protocol tunneled through an IP-852 channel. Web connections propagate data point updates via
SOAP/HTTP over a TCP/IP network. Web connections also provide an alternative solution to
L
ON W ORKS connections over an IP-852 channel for connecting devices over multiple networks;
however, Web connections are much slower (40 data point updates per second) than L ON W ORKS
IP-852 connections (more than 1,000 updates per second).
See Creating Web Connections in Chapter 4 for more information on binding data points in the
SmartServer tree with Web Connections.
The following section describes how to create, configure, and connect L ON W ORKS data points.
Creating L ON W ORKS Data Points
To create a L ON W ORKS data point, follow these steps:
1. Right-click a L ON W ORKS functional block, and then select Add Data Point on the shortcut menu.
2. The Add Data Point dialog opens: