Documentation issue statusVersionComment4.9.0Update chapter "Technical data"Update chapter "EL66xx and Beckhoff network variables"Update chapter "Explosion protection" Update chapter "Installation positions"Structural update4.8.0Chapter "Recommended mounting rail" removedUpdate chapter "Technical data"Update revision status4.7Chapter "Technical data"Update revision statusStructural update4.6Chapter “Notes on information security” amendedStructural update4.5.Update chapter "Technical data"Update chapter "Version identification of EtherCAT devices"Structural updateUpdate notesUpdate revision statusChapter Disposal added4.4Update chapter "System examples"Structure update4.3Update chapter "UL notes"Update chapter "Technical data"Update chapter "Firmware compatibility"Structure update4.2Update chapter "Object description"Structure updateRevision status updated4.1Note added to the chapter "Address assignment"Structure updateRevision status updated4.0MigrationStructure updateRevision status updated0.1 – 3.4archived