Modbus connection between Siemens LOGO and UR10e failure

Hello, I am new here.

I am trying to connect the Siemens LOGO to the UR10e via Modbus. I already managed to get the green dot on the Modbus interface of Polyscope. I am trying to write and read data form both sides, but it dont works, I can´t read any data from the robot on the LOGO.

Had anybody of your this Problem jet?
Please help me.

please find my example here with a complete documentation. this one will hopefully explain everything.