LonWorks images files are firmware images that can be used for field upgrades of WattNode for LonWorks meters. There are three common types:

• NXE: This is the type most commonly made available on our site. It is a hexadecimal format text file, recognized by LonMaker and other LNS tools for loading firmware "application image" into devices.
• APB: This is identical to the NXE file, but in a binary format that is somewhat smaller and more efficient. LonMaker will generally create an APB file automatically from an NXE file.
• NEI: We do not distribute the NEI file format, but this is the format used to directly program the flash memory IC during WattNode meter production.