Documentation issue statusVersionComment2.5Chapter “Recommended mounting rails” removedUpdate chapter “Technical data”Chapter “IECEx - Special conditions” added2.4Update chapter “Technical data”Update chapter “Version identification of EtherCAT devices”Update structureUpdate notesUpdate revision statusChapter Disposal added2.3Update chapter “UL notice”Update chapter “Firmware compatibility”Update structure2.2Update chapter "Technical data"Addenda chapter "Instructions for ESD protection"Chapter "ATEX - Special conditions" replaced with chapter "ATEX - Special conditions (standard temperature range)"2.1Update chapter "Notes on the documentation"Correction of Technical dataUpdate chapter "TwinCAT 2.1x" -> "TwinCAT Development Environment" and "TwinCAT Quick Start"Update revision status2.0Migration1.01. Publication0.3Amendments0.2Amendments0.1provisional documentation for EL6720