(AX-3.5 and later) BufferParams provides a mechanism to adjust the message buffers in the Neuron chip of the LON adapter
of a JACE controller, and works only as a child of the LocalLonDevice (the only valid parent). Properties allow changing the Application and Network buffer counts and sizes.
Usage is only for advanced users who understand the implications of changing these buffer settings. Improper usage can degrade
operation and/or result in loss of data!
When copied in the LocalLonDevice, the BufferParams component dynamically updates its properties to reflect the current message buffer configuration of the Neuron chip. Before changing any buffer parameters, it is recommended to record these default settings.
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To verify the Neuron’s current buffer configuration, use the Lon Utilities Manager, selecting the LocalLonDevice with Command:
Data Structs, Subcommand:Read Only Structure. -
Upon a property sheet , changes to buffer count or size parameters are reflected in the component’s Current Size property. To be applicable, modifications cannot exceed the size shown in the Original Size property—that is, Current Size must be less than (or equal to) Original Size. Therefore, if increasing a buffer size you often need to decrease its count, for example.
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Buffer changes saved in the BufferParam’s property sheet are not automatically written to the Neuron chip in the LocalLonDevice.
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To write buffer changes to the Neuron, you must issue the action Update Buffers.
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Before invoking this action, ensure that Current Size <= Original Size. If Current Size is greater than Original Size, an exception is thrown, and no changes are made to the Neuron chip.
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For related details, see Lon Utilities Manager.