Controller-specific information on the 62443-4-2 compliance list
OpenSSL
The OpenSSL library has been updated to version 3.0. The PLCnext Technology firmware uses this version only. For compatibility reasons the previous OpenSSL library (version 1.1.1) still exists in the file system. As this version is outdated, it has been removed from firmware version 2025.0. For applications (including PLCnext Technology Apps) which use the OpenSSL library, an update is recommended as soon as an application version is available, which uses OpenSSL 3.0.
• Published/reviewed: 2025-08-12 • Revision 019 •