Echelon OpenLNS - Manual (Page 675)

OpenLNS Programmer's Reference 638
retryValue The valid values for this property,
which are enumerated in the
ConstServiceTypes constant, are as
follows:
0 lcaSvcAckd
Acknowledged messaging service.
The device sends an
acknowledgment message after it
has received the message.
If your application will be sending
messages to large numbers of
devices at once, one of the
unacknowledged messaging services
may be desirable, as the
acknowledgment messages may
generate a significant amount of
network traffic.
1 lcaSvcUnackdRpt
Unacknowledged repeat messaging
service. The device does not send
acknowledgment messages;
however, repeat messages are sent
to the device after the initial
message is sent to it to ensure that it
reaches its destination.
You can set the number of repeat
messages to send, and the interval
at which they will be sent, by
writing to the RepeatCount and
RepeatTimer properties.
2 lcaSvcUnackd
Unacknowledged messaging service.
The device does not send
acknowledgment messages.
Do not use this service type on
channels that support altnerate
frequencies because the message
will only be sent using the primary
path. See the AltPathType property
for more information.
3 lcaSvcRequest
Request/Response messaging
service. You can use this value
when sending explicit messages if
the device receiving the message is
designed to send a response message
for the specified message code.