Depending on the application, various I/O systems are available:
- S700 can be used as direct I/O for AC 700F and AC 900F Freelance controllers, or as PROFIBUS remote I/O with AC 700F, AC 800F, AC 900F or other PROFIBUS Masters.
- S800 Remote I/O for standard applications via Profibus. Also SIL-certified modules for safety applications are available.
- S900 Remote I/O for intrinsic safe applications (Ex). Usage in non-hazardous areas is also possible. S900 is connected via Profibus.