A.
		
An error may occur in TOP Design Studio (TDS) after conversion due to changes and upgrades in functionality. We apologize for the inconvenience.
 
The special address [_1OFF], which was available in XDesignerPlus, is no longer supported in TOP Design Studio, and therefore causes a build error.
 
To resolve this issue, please change _1OFF to another valid address (PLC or SYS).
 
For detailed instructions on how to modify the address, please refer to the attached manual.