
FS-8700-21 LonWorks Manual Page 26 of 72
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: [email protected] Appendix A.3. Throttling Mode
When the Lon_Function field specifies a Throttling Mode Client Map Descriptor the NV_Delta_Value, Min_Scan_Time and Max_Scan_Time fields all need to be
assigned values.
When operating in Throttling Mode, a Network Variable’s value will be sampled at the Min_Scan_Time period. If the value differs by an amount greater than
or equal to that specified by the NV_Delta_Value field from the previously transmitted value, the NV update will be transmitted. Otherwise an NV update will
be only sent if the time since the last update is greater than or equal to the Max_Scan_Time field value. Refer to the examples in Sections 1.1.1 and 0.
This functionality applies only to SNVT’s of either Floating point or Integer formats.
It is possible to configure the driver to initiate a send on startup rather than waiting for the minimum scan interval to pass. The following example describes
the configuration required.