Does the S7TIA driver support communication with Siemens PLCs with TIA21 projects and current 4.1.x firmware?
The component used by the S7TIA driver in zenon versions 10, 11, 12, 14 and 15 in their respective latest released builds (component version 6.1.0.22), allows communication with Siemens 1500 series PLCs that are configured with a current 4.1.x firmware and a TIA portal version 21 project, when the S7TIA driver is configured to use symbolic communication with the option "Symbols from PLC".
For configurations where the S7TIA driver uses the option "Symbols from TIA project" or "Symbols from precompiled file" for symbolic communication, TIA portal version 21 projects are currently not yet supported.