Echelon LNS - Manual (Page 218)

LNS Programmer's Guide 204
Property Name Description
Priority This property determines whether or not priority
messaging will be used when sending network variable
updates during the current monitoring session. If
True
,
priority messaging will be used.
Setting this property through the NvOptions property of
a permanent 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.
Remember that you can set this property through the
CurrentOptions property of a permanent or temporary
network variable monitor point to determine whether or
not priority messaging will be used when sending
network variable updates during the current monitoring
session.
Default Value: For permanent monitor sets, the default
value for this property is False. The default value for
temporary monitor sets is set to match the value of the
DsPriority property.
ReportByException This property determines if network variable update
events for this set will only be reported when the value of
a network variable changes. If
True
, LNS will only
report update events to your application when the value
of a network variable changes. For example, if the value
of a network variable is polled three times and the value
does not change until the third poll, only the third poll
will be reported to your application via an update event.
Network variable update events are described in more
detail later in this chapter.
Default Value: For permanent monitor sets, the default
value for this property is True. The default value for
temporary monitor sets is set to match the value of the
DsReportByException property.