, Which can be parameterized to safely cascaded filter

摘要

Parameterizable filter for a programmable logic controller with a bidirectional data burst by means of transmission between a central station and at least one connected to the bus bus station, wherein the bus the bidirectional data line (dl1, dl2) for the transmission of data and parameters, at least one control line (st3 or st4) for transmitting control signals and a clock line (clk), which has, for presetting a common system clock is guided by the bus station,• with a unidirectional shift register (shft) for storing via the bidirectional serial data line (dl1, dl2) transmitted data burst,• with a data selector (ds2), which is connected to the storage elements of the shift register (shft) is connected,• with a connected to the data selector (ds2) is connected to the parameter register (prm) for temporary storage of parameters and• with a with the control line (st3) and the parameter register (prm) is connected to the control unit (ctrl), wherein in accordance with the current parameters in the parameter register (prm) and the via the control line (st3 or st4) received control signals, the control unit (ctrl) the..