Echelon i.LON SmartServer 2.0 User Manual
Page 215
i.LON SmartServer 2.0 Programmer’s Reference
14-15
Property Description
is accomplished by assigning each priority device a time
(priority) slot where it can transmit before all other lower
priority and non-priority devices. These time slots consume
network bandwidth; therefore, priority messaging should only
be used for critical devices and data.
The expected longest round-trip time (in milliseconds) of a
message (for example, message and response). This option
allows expected traffic patterns to be input into the system so
that the timer calculations can be affected accordingly.
The default round-trip delay is two packet cycles based on the
average packet size.
This property is optional. If you do not specify this property in
a Set function, the current value stored in it is erased. You must
specify this property even if you are not changing it in order to
preserve the current value.
This property is always set to AM_ONLINE.
If a network message fails, a data point and its device are
marked offline. You can specify the
property so that all the data points on the offline device with
pending network messages (read/write requests, polls, or
heartbeats) are marked offline and network messages are not
sent to them. This ensures that network performance is not
impacted by an offline device.
You can set the minimum period of time (in seconds) that the
SmartServer waits before transmitting network messages to
offline data points. During this period, an offline device
transmits an OFFLINE status in response to data point requests.
Once
read/write request to one offline data point. If the read/write
request succeeds, the data point and its device are marked
online, and all cached read/write requests for the offline data
points on the device are executed.
This property is optional. If you do not specify this property in
a Set function, the current value stored in it is erased. You must
specify this property even if you are not changing it in order to
preserve the current value.
You can set the period of time (in seconds) that a device
executes data point requests from the SmartServer after one
request fails. Once this timer expires, the device transmits an
OFFLINE status in response to data point requests.
This property is optional. If you do not specify this property in
a Set function, the current value stored in it is erased. You must
specify this property even if you are not changing it in order to
preserve the current value.
Indicates whether the channel is static (DDT_STATIC) or
dynamic (DDT_DYNAMIC). All channels in the LNS Proxy