Echelon i.LON 100 e2 Internet Server - Manual (Page 59)

i. LON 100 Internet Server Programmer’s Reference 5-15
Property Description
<SCPTminSendTime> This property applies to output data points, and defines the
minimum amount of time that may elapse between data point
updates if it set to a non-zero value.
For example, if a SNVT_temp value data point is changing by
one degree every half second and this value is set to two seconds,
the data point will only be updated every two seconds with the
latest value, even though the value changes more frequently
than that.
NOTE: If a data point update occurs before this time period
elapses, that update will not be propagated over the network,
unless the <SCPTmaxSendTime> property is defined. In that
case, the update would be propagated over the network after the
<SCPTmaxSendTime> period expires. If <SCPTmaxSendTime>
is not set, the update would be lost. As a result, it is
recommended that you set the <SCPTmaxSendTime> property.
<SCPTmaxRcvTime> This property is used to control the maximum time that can
elapse after an update to a bound network input, before another
update occurs. If this period elapses without an update, the
<UCPTpointStatus> of the data point will be updated to
AL_OFFLINE. You could create an Alarm Notifier to trigger an
alarm notification when this happens. For more information on
Alarm Notifiers, see Chapter 8, Alarm Notifier.
The valid range for this property is any value between 0.0 sec
and 6,553.4 seconds. Setting <SCPTmaxRcvTime> to the
default value of 0.0 disables the receive failure mechanism.
<UCPTdefOutput> Optional. The value to be assigned to this data point after a
power-up of the device or during an override of the functional
block.
For external data points and devices that operate as slaves,
Echelon does not recommend that you define this property, as
the value entered here will be sent to the external device after a
power-on.
NOTE: You can use DataServerSet to change this value in the
Data Server. However, you must program your application to
enforce the new value, as the
i. LON 100 will continue to enforce
the default value taken from the resource files.
<UCPTminValue> Optional. This value is initially taken from the i. LON 100
resource files, if it exists for the data point type selected. This
value represents the minimum value the data point can be
updated to.
NOTE: You can use DataServerSet to change this limit in the
Data Server. However, you must program your application to
enforce the new limit, as the i. LON 100 will continue to enforce
the limit taken from the resource files.