Echelon LNS Uživatelský manuál stáhnout pdf (Strana 208)

LNS Programmer's Guide

194

on the UseBoundUpdates property, see The Implicit Bound Network Variable

Monitoring Scenario on page 220.

Creating Monitor Sets

The first step when creating a monitor and control application is to create a monitor set.

To create a permanent monitor set, follow these steps:

1. Open the ObjectServer, Network, and System you plan to monitor and

control, as described in Chapter 4, Programming an LNS Application.

2. Get the AppDevice object contained in the Network object's MyVNI

property. This contains a collection of the MonitorSet objects that are

stored in the LNS database for your client’s Network Service Device. This

is the collection you should use when creating and configuring a

permanent monitor set.

Set VniAppDevice = MyNetwork.MyVNI

Set MyMonitorSets = VniAppDevice.MonitorSets

3. Invoke the MonitorSets collection's Add() method. This method takes

the name of the new monitor set as an argument.

Set newMonitorSet = MyMonitorSets.Add("Monitor Set 1")

At this point, the new monitor set is closed. You will need to open and

enable it before using it for monitor and control purposes, as described

later in this chapter.

4. Set the properties of the new MonitorSet object, including the

NvOptions property, the MsgOptions property, and the Tag property.

You can use the NvOptions property, and the MsgOptions property to

set the default monitoring options that will be applied to the monitor set.

For more information on monitoring options, see Setting Monitoring

Options on page 200.

You can use the Tag property to store any information required to quickly

and efficiently identify the monitor set, such as the name of the device

you plan to monitor with the set. See the LNS Object Server Reference

help file for more information on the Tag property, and the other

properties of the MonitorSet object.

To create a temporary monitor set, follow these steps:

1. Open the ObjectServer, Network, and System you plan to monitor and

control, as described in Chapter 4, Programming an LNS Application.

2. Call the CreateTemporaryMonitorSet() method on the Network

object. The method will return the new temporary monitor set.

Dim MyTempSet as LcaMonitorSet

Set MyTempSet = MyNetwork.CreateTemporaryMonitorSet()

At this point, the new monitor set is open, but it has not been enabled.

You will need to enable the monitor set before you use it for monitor and

control purposes. This is described later in the chapter.

3. Set the properties of the new MonitorSet object, including the

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