Using the simulation feature, you can verify screen operations before transferring it to the device/PLC. You do not have to save the project before simulating, making it ideal for debugging as you edit and create the project. You can even keep simulation running while you open and edit a different project in GP-Pro EX.
32.2.1 Procedure - Checking Display Unit operations on the Computer
To verify screen operations with the PLC, please see the following.32.5 Checking Display Unit operation and PLC interaction on the Computer