No Data Exchange between UR Robot and S7-1500

Hello everyone,

I am currently facing a communication issue between a Universal Robots robot and a Siemens S7-1500 PLC connected via Profinet.

I am not receiving the PowerOn signal on the PLC side, and I am also unable to exchange data: I cannot send an integer from the PLC to the robot, nor from the robot to the PLC.

The configuration appears to be correct on both sides.

The I/O mapping has been set up following the official example:
https://www.universal-robots.com/articles/ur/interface-communication/profinet-how-to-guide-e-series/

However, the behavior suggests that although the connection seems established (no obvious errors), there is no actual data exchange between the devices.

Has anyone encountered a similar issue or can suggest what to check?

Best regards,
Samuel Seijo

The communication on the robot side appears to be working correctly.

Have you confirmed that all Permissions and Services are correctly set in the System Settings of your UR?