After importing the model and putting all settings go to
Prepare To Print
this shows the preview of the print and on left side the button
Save Toolpath To Disk
Click this button and a file will be stored on choosen folder.
The File has the extension *.gcode when this format is choosen in the menue >>> Process Setting >> Scripts (if not, change it!)
Alternatively you can copy in menue Scripts the Starting- and Ending Script or better
you attache here your FactoryFile when readed this:
https://forum.simplify3d.com/viewtopic.php?f=8&t=2367
H.