Hi from Croatia, 
I have an old 2003 series PLC system (attached picture) that suddenly went into ERROR state. This PLC is part of an old FRONIUS ORBITAL welding system , and after it sat in storage for a couple of years , we decided to power it up and test it. It was OK, and we did a few tests with the machine, but suddenly, for no reason, the PLC went into ERROR state (red LED active). We also have a handheld HMI ( KEBA ht401 model) that is not showing date and time, and it is not responding to commands .
My question:
If I download Automation Studio 4.0 from the B&R website and use the appropriate RS232 cable, will I be able to connect to the PLC and see the error description? Do I need a paid license to be able to do that? I don’t need to change the program, just pinpoint the potential problem with the system .
Thank you all
Robert
