Echelon OpenLNS - Manual (Page 504)

OpenLNS Programmer's Reference 467
network variable monitor point. If you explicitly disable
monitoring of a single monitor point, you can only re-enable
monitoring of that monitor point by calling the Enable
method on the monitor point.
Availability Local, full, lightweight, and independent clients. Note that
temporary MonitorSet objects and temporary monitor points
are not available on Independent clients.
Syntax object.Disable
Element Description
object The MonitorSet object to be disabled.
Added to API LNS Release 3. 0.
Enable
Summary Enables monitoring of a monitor set. You can use this method
to enable monitoring of all network variable and message
monitor points in the monitor set. If you set the doPoll
parameter to True, all network variable monitor points in the
set will be polled, unless they had polling explicitly disabled
with the Disable method.
If a message monitor point or network variable monitor point
has been explicitly disabled with the Disable method, it will
not be re-enabled when the Enable method is called on the
monitor set. You can only re-enable that monitor point by
calling the Enable method on it.
For example, if you call the Disable method on a monitor
point named Point A, and then call the Enable method on the
monitor set containing Point A, Point A would not be
enabled. However, all other monitor points in the monitor set
would be enabled. You would need to call the Enable method
on Point A to re-enable it.
If a monitor point is disabled, and its value changes before it
is re-enabled, the point will not be updated with the new
value until it has been re-enabled and a monitor point update
is received.
You can, however, configure the network variable monitor
points in your network to fetch the values of the network
variables they are monitoring as soon as they are enabled.
•
To do this for all network variable monitor points in a
monitor set, set the GenerateInitialFetch property of the
monitor set’s NvMonitorOptions object to True.
• To do this for a single network variable monitor point, set
the GenerateInitialFetch property of the network variable
monitor point’s CurrentOptions to True.
Availability Local, full, lightweight, and independent clients. Note that
temporary MonitorSet objects and temporary monitor points