LonMark certifies against version 3.4 of the LonMark Interoperability Guidelines. The following Guidelines versions are available for download for developers and integrators to compare against the most recent version and must not be used for development.

Version 3.3 of the LonMark Interoperability Guidelines is no longer effective, as of 2006-04-05.

Version 3.2 of the LonMark Application-Layer Guidelines and Version 3.0 of the LonMark Layer 1-6 Interoperability Guidelines are no longer effective as of 2003-05-01.

LonMark Application-Layer Interoperability Guidelines
  • lyr733.pdf, version 3.3, updated 2002-10, effective 2002-11-1 (1.2MB)

LonMark Layer 1-6 Interoperability Guidelines
  • lyr1633.pdf, version 3.3, updated 2002-10, effective 2002-11-1 (612k)

LonMark Application-Layer Interoperability Guidelines
  •lyr732.pdf, version 3.2, updated 2002-03 (644k)

LonMark Layer 1-6 Interoperability Guidelines
  • lyr1630.pdf, version 3.0, (273k)

LonMark Device Interface File Reference Guide
Describes the content and structure of a device interface (XIF) file. This is Revision 4.400 and documents XIF format
  • LmXifRef.pdf, Version 4.400 - updated 2003-05-23 (288k)