Echelon SmartServer 2.2 - Manual (Page 181)

182 Using the SmartServer Web Interface
acknowledgements.
You cannot use acknowledged messaging in standalone networks for a
connection that includes multiple input network variables. You can use
acknowledged messaging in standalone networks with a single output
network variable and a single input network variable.

Repeated LonConnection. The sending device sends out a series of
network variable updates, but does not expect any confirmation from
the receiving device or devices. Repeated service with three repeats has
a 99.999% success rate in delivering messages.
Repeated service provides the same probability of message delivery as
acknowledged messaging with the same number of retries, with
significantly lower network overhead for large multicast fan-out
connections.
For example, a repeated message with three retries to 64 devices
generates four packets on the network, whereas an acknowledged
message requires at least 64 packets.

Unacknowledged LonConnection. The sending device sends out the
network variable update only once and does not expect any
confirmation from the receiving device. This message service type
consumes the least amount of resources, but is the least reliable.
Priority Displays the priority assigned to the Web connection for writing updated
values to the target data point. This value may range from 0 to 255 (highest
to lowest priority). The default priority for a target data point is 255.
You can assign the Web connection a higher priority for updating the data
point. The priority you specify must be equal to or higher than the priority
used by the last application that updated the data point.
Similarly, if this Web connection updates the target data point, the next
application must specify a priority equal to or higher than the one you
specified in order to write to the target data point.
Propagate Enables updates to the source data point in a Web connection to be
transmitted to the target data point. This check box is selected by default. If
you clear this check box, updates to the source data point are not transmitted
to the target data point.
5. Click Submit.
Deleting Connections
You can delete the connections you have created. To do this, right-click the target data point in the
connection and then click Delete on the shortcut menu. The reference to the target data point and the
connection are deleted. Click Submit.