Overview > io-link > functions-primary > Primary device functions Primary device functions This section describes the primary device functions of the sensor. Identification Description ISDU Application Specific Tag Function Tag Location Tag Product Type Code Product Order Code System Commands Configuration of analog ports Description Nominal and measuring range Overflow/underflow range Process Data Process data bits for Underflow/Overflow Port 5-8 ISDU Analog Mode Analog Port Pin Assignment Safe States System Commands Events Configuration of analog value display Description Resolution Alignment Data format Calculation of the digitalized value Examples Process Data ISDU Process Data Alignment Resolution Process Data Format System Commands Switch Point Description Process Data Process data bits for analog port switch point 1 PD Object Process data bits for analog port switch point 2 PD Object ISDU Switch Point 1, Switch Point 2 Switch Point Enable System Commands Moving Window Averaging Description ISDU Length of Moving Window Average System Commands Port Monitoring Description Process Data Process data bits for Pin 1 short circuit Process data bits for Port status ISDU Port monitoring System Commands Events