The Operator Screens can only be viewed using Unity/Control expert, there is no other way to access them.
The BMENOC0311 has 'FactoryCast' which allows you to create custom web pages and also allows you to view PLC logic. Perhaps this can be an alternative approach.
Information regarding this module can be found on our website. https://www.se.com/us/en/product/BMENOC0311/network-module-modicon-m580-factorycast-ethernet/