Freelance provides an operator level and a process level.The operator level contains the functions for operation and observation, archives and logs, trends and alarms. Open-loop and closed-loop control functions are processed in the controllers, which communicate with actors and sensors in the field.The system consists of the following components:
- Control Builder F – Engineering Tool
- DigiVis – Operator software
- AC 700F – Controller
- AC 800F – Controller
- S700 direct and remote I/O
- S800 remote I/O
- S900 remote I/O