This article describes how to disable the optimized block access in TIA portal so that the Flexy can read the PLC registers.
All Ewon Flexy models
By default, TIA portal uses symbolic names and no more the Tag addressing. Here are the steps to disable the so called "Optimized access" of your data block and get the tag addresses (ex : DB601.DBD0) you can use in your Flexy configuration.
Step 1 : Access the properties of your data block
Step 2 : Disable the option "Optimized block access"
The Datablock offsets will then appear allowing you to compute the unique register address. (Ex : DB1.DBD0)
Step 3 : Download the program to your PLC
ADDITIONAL INFO
How to configure Flexy tag addressing for Siemens S7 PLCs
Polling Data from Siemens PLC (Using Ethernet Protocol)