www.saigonnewtech.com After you have created, edited and saved a program, the next step is to download this code to the CPU. Downloading copies the code from your PC (Offline) to the CPU (Online). Within STEP 7, you can use the SIMATIC Manager to download the entire program or multiple blocks. You can also use the Program Editor (LAD/FBD/STL) to download individual code blocks that are open.