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LNS Programmer's Guide

195

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.

After you have created a monitor set, you can add network variable and message monitor

points to it. The monitor points will represent the network variables and application

messages to be monitored and controlled with the set. See the next section, Managing

Monitor Sets, for more information on this.

Managing Monitor Sets

After you have created a temporary or permanent monitor set, you should perform the

following tasks:

1. Add network variable and message monitor points to the set. For more

information on these tasks, see Adding Network Variable Monitor Points

to a Monitor Set on page 195, and Adding Message Monitor Points to a

Monitor Set on page 197.

2. Configure the monitoring options for the set. These options determine the

behavior of the set while it is enabled. For more information, see Setting

Monitoring Options on page 200.

Generally, the way you will perform each task is the same for temporary monitor sets

and permanent monitor sets. Exceptions to this are noted as each task is described.

Adding Network Variable Monitor Points to a Monitor Set

Each MonitorSet object contains an NvMonitorPoints property. The

NvMonitorPoints property returns a collection of the network variable monitor points

in the monitor set. You can use network variable monitor points to monitor the devices

on your network. To create a network variable monitor point, 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 device containing the network variable to be monitored:

Set MySubsystems = MySystem.Subsystems

Set MySubsystem = MySubsystems.Item("Floor3.Room7")

Set MyAppDevices = MySubsystem.AppDevices

Set MyAppDevice = MyAppDevices.Item("Thermometer")

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Echelon LNS Manual de usuario Pagina 209