Abstract:
The invention relates to a signal generator for producing periodic signals for a measuring apparatus (1) of automation technology, wherein the signals have sequential, discrete signal frequencies, which lie within a predetermined frequency range, a control- and/or computing unit (4), a clock signal producer (6), wherein the clock signal producer (6) provides a constant sampling frequency, which is greater than the maximum discrete signal frequency in the predetermined frequency range, a memory unit (7), in which for each of the discrete signal frequencies the amplitude values of the corresponding periodic signals are stored or storable as a function of the sampling frequency, wherein the control- and/or computing unit (4) reads out the stored or storable amplitude values of the discrete frequencies successively with the sampling frequency of the clock (6) from the memory unit (7) and produces the periodic signals or forwards for producing, and a static filter unit (12) with a limit frequency, which lies above the maximum signal frequency and which removes frequency fractions caused by the sampling.
Abstract:
The present disclosure relates to an additional module for a processing and/or automation field device, at least including a module housing, an optical receiving unit which is arranged at least partly within the module housing, an electronic module unit, and a display/transmission unit. The optical receiving unit is designed to wirelessly receive at least one first optical signal from the field device and to convert the at least one first optical signal into at least one first electric signal, and the electronic module unit is electrically connected to the receiving unit and to the display/transmission unit. The electronic module unit is designed to extract at least one piece of field device information from the at least one first electric signal and to transmit the at least one piece of field information to the display/transmission unit, and the display/transmission unit is designed to display the at least one piece of information and/or to transmit the at least one piece of information to at least one external unit.
Abstract:
The present disclosure relates to an additional module for a processing and/or automation field device, at least including a module housing, an optical receiving unit which is arranged at least partly within the module housing, an electronic module unit, and a display/transmission unit. The optical receiving unit is designed to wirelessly receive at least one first optical signal from the field device and to convert the at least one first optical signal into at least one first electric signal, and the electronic module unit is electrically connected to the receiving unit and to the display/transmission unit. The electronic module unit is designed to extract at least one piece of field device information from the at least one first electric signal and to transmit the at least one piece of field information to the display/transmission unit, and the display/transmission unit is designed to display the at least one piece of information and/or to transmit the at least one piece of information to at least one external unit.