Several security-related notes and cautions were added in the Lon tunneling appendix, including in subsections Lon tunnel overview, Lon tunnel client configuration, and Configuring the Lon tunnel server. A new subsection Best security practices for tunneling provides related configuration details.

Updates mostly reflecting AX-3.5-related changes. Removed many references to early NiagaraAX release or build levels (AX-3.0, AX-3.1, and AX-3.2), where AX-3.3 is considered baseline. New or changed areas of the document include a new section about Lon proxy point Facet support for “null” output, and changes in the Lon Utilities Manager section that shows an updated figure for building a command, as well as a description for the Read Mem command. Changes were made in the section Notes when configuring as Lon node, in subsections Add Local nvs and ncis, Notes on editing LocalNvs and LocalNcis, and Local Nv Manager notes. Changes include descriptions of additional properties in the New / Edit dialog for Local Nvs and Local Ncis, available starting in AX-3.5.

The Lon Component Guides section had new or updated summary descriptions added for components BufferParams, ChannelMember, and IpLonNetworkConfig.

A new appendix Lon over IP was added, which contains more details about using the lonIp module, in addition to the brief summary descriptions in lonIp. Starting in AX-3.5, the lonIp module was extended with the ability for the Niagara (JACE) station to act as the CEA-852 “Configuration Server”. Main sections in the new appendix include Overview, LonIp Setup, Member Manager, and ChannelMember.

Updates reflecting AX-3.4-related changes, including a new Workbench “ExtractXif” command on a LocalLonDevice, a new kitLon component, and a new “zero-based” array indices option when creating an .lnml file. See LocalLonDevice XIF generation (AX-3.4 and later) , LonReplace, and the first note in Lon Xml creation. A minor change was made in Lon Comm Config notes. Details were added about the LinkFilter (debug usage) component, see LinkFilterView and LinkFilter.

Changed document to reference the new NiagaraAX Drivers Guide, which was created from information formerly found in the NiagaraAX User Guide.

Updates reflecting AX-3.3-related changes. In the concepts chapter, the “Lon Objects” feature was explained in a new section LonObjects, and this also affected existing sections as follows: Lon Netmgmt, ImportXml command, Learn Nv, and About the Nv Manager.

In the Lon Component Guides, a brief description was added for the new LonPoint component found in the kitLon module.