• exit your train at Baden-Baden - some fast trains like ICE also stop at Baden-Baden station
• take bus line 205 it will take you directly to Sakkara (exit point Pariser Platz )

• departure station:
  Mo-Fr  xx:12 o'clock, resp.. xx:44 o'clock
  Sa: xx:11 o'clock
  
  
• travelling time will be approx. 9 minutes
• Exit bus at Pariser Platz - which is directly in front of SAKKARA GmbH
  
  
• Returning to Baden-Baden station:
  Mo-Fr xx:04 o'clock, resp. xx:31 o'clock
  Sa: xx:57 o'clock

... and should you want to stroll through the beautiful pedestrian area of downtown Baden-Baden:

• departure Pariser Platz:                   
  Mo-Fr  xx:18 o'clock, resp. xx:50 o'clock
  Sa: xx:17 o'clock

• travelling time will aprox. be 11 minutes
• departure Leopoldsplatz:
  Mo-Fr  xx:20 o'clock, resp. xx:54 o'clock
  Sa: xx:47 o'clock

Additional information:

on the website of the train/bus service provider KVV you'll find a schedule as PDF download for the city of Baden-Baden -  or download the current timetable of KVV