Echelon LNS DDE Server - Manual (Page 92)

Receiving Ongoing Configuration Property Updates
Receiving ongoing configuration property updates is similar to receiving network
variables as described in Chapter 5. However, for configuration properties, you need
to specify the topic and item as described in Specifying a Configuration Property
earlier in this chapter. See Receiving Ongoing Updates in Chapter 5 for an
explanation.
The RefreshRate global option specifies the rate that the LNS DDE Server uses to
check to see if a configuration property value has changed. When advising
configuration properties, this is the maximum rate at which your application will see
changes.
Sending a Configuration Property Update
Sending a configuration property update resembles sending a network variable
update. Again, the difference is how the item is specified and which topic type is
used.
Example
Here are two examples of what the application, topic, and item might look like when
sending a control property update.
Example 1:
Application
LNSDDE
Topic Testnet.Subsystem 1.LMCP
Item DI-1.Switch3.UCPTonDelay.second
Example 2:
Application
LNSDDE
Topic Sample.HVAC.LMNVCP
Item AO.PID Controller[1].PID_SP_2.UCPTpresetTabFlt[ 4].useTable
See Sending a Network Variable Update Using Excel and Sending a Network
Variable Update Using InTouch in Chapter 5, for InTouch examples.
6-6 Reading and Writing Configuration Properties