I've always found that a single DIO Port Config at the beginning of the program and just using DIO Port Write with a line mask works great. That doesn't reset the port later on and I have the flexibility to write to more than one line. If you want something as simple as Write to Digital Line where you just specify the line state and a single line, DIO Port Write can be easily modified by eliminating the DIP Port Config and the while loop as shown in the attached picture.