Instruction Manual

i.LON 100 Internet Server Programmer’s Reference 5-15

Property Description

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.

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.

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.

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.