Saving an S5 or S7 PLC Program using S5/S7 for Windows
I've connected to my PLC and uploaded all the on-line blocks to my PC but I can not save!
When connecting the a Siemens PLC and uploading (from PLC to PC) for the first time, you need to have already created a new project for the configuration to "land" in.
- Create your project (File ⇒ New from the file menu) so it shows up in your Offline tree view.

- Connect to the PLC and upload the program from the PLC to the PC.
- Ensure that the proper project file is highlighted.
- From the file menu, select File ⇒ Save As...
- Select the appropriate format and save.