High level applications such as MES, SAP, production tracking, quality control… need data from the field but often do not support industrial protocols.

A good and easy way to exchange field data with higher level software applications is to use formatted text file with FTP protocol.

The eWON features an embedded FTP client and server.

Thanks to the export block descriptor function, the Basic language and the embedded Flash File System, it is easy to manage data acquisition, file management and file transfer using FTP on board of the eWON.

Even if your software (e.g. SCADA) includes a communication driver, it is interesting to avoid continuous polling that is time and bandwidth consuming, loading your Ethernet network. An alternative solution is having the eWON making the polling locally and having it notifying your application by FTP transfer only when a significant threshold has been exceeded.