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For the communication with these devices to work, beside settings described in note above, it is necessery to disable "Optimized block access" in TIA Portal tool. Following screenshot is taken in TIA Portal version 12:
After changing the security settings in TIA Portal, it is necessary to go to menu Compile → "Software (Rebuild all)" and after compiling to uploat the project to PLC. Partial rebuild may not be sufficient.
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