Echelon FTXL - Manual (Page 162)

150 FTXL LonTalk API
Table 13. Other FTXL LonTalk API Functions
Function Description
LonFreeNvTypeData() Frees internal buffers that were allocated by a call to the
LonQueryNvType() function.
LonGetDeclaredNvSize() Gets the declared size for a network variable.
LonGetNvValue() Gets a pointer to the value for a network variable. This function
is required for dynamic network variables, but could be used for
any network variable.
LonGetUniqueId() Gets the unique ID (Neuron ID) value of the FTXL Transceiver.
LonGetVersion() Gets the version number of the FTXL LonTalk API.
LonPollNv() Requests a network variable value from the network. An FTXL
application can call LonPollNv() to request that another
L ON W ORKS device (or devices) send the latest value (or values)
for network variables that are bound to the specified input
variable. To be able to poll a network variable, it must be
declared in the model file as an input network variable and
include the polled modifier.
LonQueryNvType() Queries the information about a network variable.
LonSendServicePin() Broadcasts a service-pin message to the network. The service-
pin message is used during configuration, installation, and
maintenance of a L ON W ORKS device. The FTXL LonTalk
protocol stack automatically broadcasts service-pin messages
when needed.
Application Messaging API Functions
Table 14 lists the FTXL LonTalk API functions that are used for implementing
application messaging and for responding to an application message. Application
messages can be used to implement a proprietary interface that does not need to
interface to devices from other manufacturers. Support for application
messaging is optional.
Table 14. Application Messaging FTXL LonTalk API Functions
Function Description
LonReleaseCorrelator() Releases a request correlator for an application message without
sending a response.
LonSendMsg() Sends an application message.