Problem running project in simulation mode in Automation Studio

[Asia_Kowal]

Hi,
I’m trying to run a project in Automation Studio using simulation mode.
After compiling the project, when I click Transfer, I get the following message:

Additionally, when I try to start the visualization via VNC, I get another message:

What’s interesting is that when I open a blank project, both options work fine — simulation and VNC visualization.
The project I’m trying to open is a working project from a physical controller.

Has anyone experienced a similar issue or knows what might be causing this?

Thanks in advance for your help!

[ozturkf (Fatih Ozturk)]

Look at the bottom right status bar of Automation Studio, it should say ANSL for transfer, not INA.

INA is the fallback if no ANSL connection could be established (e.g. because of bad network, CPU load, CPU still rebooting)
Often changing online connections from AS to re-start the online connection works to solve this.

Or you can resolve it manually on the Online Settings page by connecting from there add TCP IP Connection.

[ozturkf (Fatih Ozturk)]

You can also deactivate INA completely if you do not need it (for older PLCs/AR versions)
Enable the extra CPU settings in AS online dialog

[Asia_Kowal]

The simulator starts up, but VNC still shows this error. While uploading the program, the green bar doesn’t reach the end, and it only works after restarting the simulator.
EDIT:
It worked - the issue was caused by a different port.