AC 800F functional range
The scope of functions provided by the Freelance system corresponds to the basic supply defined in IEC 61131-3, in addition to numerous other high performance, industry-proven functions and function blocks. They are accommodated in a function block library and can be supplemented by user-specific function blocks. While designing the station and during configuration, the processing capacity and speed of the process station can be easily adapted to the demands of the automation task. Program execution in the process station is based on a task-oriented, real-time multitasking operating system, leading to a flexible strategy for processing programs.
Different modes are available for task execution:
- Cyclical processing with cycle times from 5 ms upward
- Fastest-possible processing (PLC mode)
Along with the user tasks, system tasks – in which functions can also be processed – are automatically made available. These tasks are executed once in case of the following events:
- RUN
- STOP
- COLD START
- WARM START (voltage restored)
- REDUNDANCY TOGGLE
- ERROR
Up to eight cyclic user tasks and one PLC mode task can be configured in a process station.
| Functions and Function Blocks |  |
| Analog value processing |
- Input and output conversion
- Linearization -Delay and dead-time filter
- Average/extreme value determination in time
- Setpoint adjustment
- Counter with analog input
- Time scheduler
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| Binary value processing |
- Binary output, monostable
- Input and output delay
- Pulse/time counter, pushbutton
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| Closed-loop control |
- Continuous controllers
- Step controllers
- On/off controller, three-position controller
- Ratio controller
- Basic functions
- Auto-tuning
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| Open-loop control |
- Individual drive functions
- Sequence control, dosing circuits
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| Logic functions |
- Logic processing
- Average/extreme value determination
- Comparator, binary switch
- Multiplexer -Converter (data type & code)
- Flip-flop, edge detection
- String blocks
- radio controlled adjustment of daylight-saving time
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| Monitoring |
- Analog and binary monitoring
- Event monitoring
- Audible alarm control
- Connection monitoring
- Sequence-of-Events (SOE)
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| Acquisition Arithmetic functions |
- Disturbance course acquisition, trend acquisition
- Basic arithmetic functions, numerical functions
- Logarithmic functions
- Trigonometric functions
- Analog value and time limitation
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| Modbus functions PROFIBUS |
- Master and slave functions
- DPV1 master functions for AC 800F
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| FOUNDATION Fieldbus (FF) Send/Receive |
- FF High Speed Ethernet (HSE/H1) for AC 800F
- Send and receive blocks for inter-system communication
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| Phase logic processing |
- Interface module for batch applications
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Intelligent linking devices
As the AC 800F possesses the high-speed connection of both PROFIBUS (PROFIBUS DP) and FOUNDATION Fieldbus (FF-HSE), the slower buses of the two fieldbus technologies (PROFIBUS PA and FF-H1) can be connected using intelligent linking devices.
These devices allow to connect several slow buses to one fast bus, with the advantage that a lot more field devices can be connected to an AC 800F station than when the slow fieldbuses are connected directly.