RobotStudio event

OPC UA Client an Siemens S7-1500 UPC UA Server

Hi there,

i try to connect RobotStudio with the opc server on an Siemens 1500 PLC.
Connection is ok but i doesnt see any variables in the node browser.

When i connect with UAExpert to the 1500 server i can read and write all variables.

Did someone have an idea what i am doing wrong.