Priority – Echelon OpenLNS User Manual

Page 670

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OpenLNS Programmer's Reference

633

NvOptions property of the MonitorSet object. This may

be useful if you want the poll interval for the monitor

point to always match the default value stored in the

MonitorSet object. However, this feature is not available

in server-independent mode.

When writing to this property, the amount of polling you can

do on a network depends on the speed of the communication

channels being used by the network, and the amount of

traffic on those channels. The poll interval you select

combined with the number of network variables being polled

by the OpenLNS Server may significantly increase the

amount of traffic on your network. When you write to this

property, ensure that the poll interval you specify does not

cause your network resources to be exceeded.

Availability

Local, full, lightweight, and independent clients. Note that

temporary

MonitorSet

objects and temporary monitor points

are not available on Independent clients.

Syntax

pollIntValue = nvMonOptsObject.PollInterval

Element

Description

pollIntValue

The poll interval in milliseconds.

nvMonOptsObject

The

NvMonitorOptions

object to be

acted on.

Data Type

Long.

Read/Write

Read/write.

Added to API

LNS Release 3.0.

Priority

Summary

Determines whether priority is used when polling or

explicitly updating a network variable monitor point using

the Value property.

Setting this property through the

NvOptions

property of a

permananent monitor set, or through the

DefaultOptions

property of a permanent network variable monitor point,

does not have an effect. The default priority setting for each

permanent network variable monitor point is established by

the

UsePriorityFlag

property of the

ConnectDescTemplate

specified when the network variable monitor point was

created.
You cannot set this property through the

DefaultOptions

property of a temporary network variable monitor point, as

the

DefaultOptions

properties of all temporary monitor points

are not accessible. However, you can set this property

through the

NvOptions

property of a temporary monitor set

to determine the default priority setting that will be applied

to all network variable monitor points as they are added to

the set.

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