One of the most important tasks in an automatic firing plant is the control of the various physical and technical processes.

The actual values of the controllers are recorded by sensors as analog current signals. These measured values are converted by the input peripherals (FSC-IO modules, CAN modules) into digital signals (e.g. 400 to 2000 digit) and forwarded to the HMI.

In the HMI these analog signals are prepared by means of the configured input channel. The channel returns its prepared, analog actual value signal to the controller, which performs a comparison with the setpoint. The setpoint can either be defined internally by the user or can be assigned by a superordinate system.

After comparison of the actual and setpoint values, the setting value is determined and sent to an analog output channel. The channel converts the actuating signal into digits (for example 400 to 2000) and sends it to the actuators or components that control actuating elements.

If necessary, the setting value may also be specified by a higher-level system.