Abstract: A method and evaluation device for checking plausibility of an incremental counter, wherein counting pulses are detectable via the incremental counter, and wherein a dynamic system generates the counting pulses with a clock rate corresponding to a state of the dynamic system. Here, a minimum value and a maximum value for a possible or permitted change in the clock rate per time unit is predefined based on operating limits of the dynamic system, wherein a current clock rate is calculated in each case from two counting pulses respectively detected last, and wherein at each newly detected counting pulse the counting pulse is checked to determine if the difference between the clock rate calculated in the course of the newly detected counting pulse and a clock rate calculated immediately beforehand is within the limits defined by the minimum value and maximum value, wherein otherwise implausibility is detected.

Abstract: A front plug for a PLC module, where the front plug includes a top and bottom contact strip that is connected to the top contact strip by a hinge for moving the top contact strip between an open and closed condition, the contacts of the top and bottom contact strip are in the closed condition arranged electrically insulated laterally mutually offset and enable contact with mating contacts of the PLC module requiring to be connected via the front plug, and contact with the mating contacts is enabled at least partially on a side of the bottom contact strip that side faces away from the top side.

Abstract: A method and evaluation device for checking plausibility of an incremental counter, wherein counting pulses are detectable via the incremental counter, and wherein a dynamic system generates the counting pulses with a clock rate corresponding to a state of the dynamic system. Here, a minimum value and a maximum value for a possible or permitted change in the clock rate per time unit is predefined based on operating limits of the dynamic system, wherein a current clock rate is calculated in each case from two counting pulses respectively detected last, and wherein at each newly detected counting pulse the counting pulse is checked to determine if the difference between the clock rate calculated in the course of the newly detected counting pulse and a clock rate calculated immediately beforehand is within the limits defined by the minimum value and maximum value, wherein otherwise implausibility is detected.

Abstract: A front plug for a PLC module, wherein the front plug includes a top and bottom contact strip that is connected to the top contact strip by a hinge for moving the top contact strip between an open and closed condition, the contacts of the top and bottom contact strip are in the closed condition arranged electrically insulated laterally mutually offset and enable contact with mating contacts of the PLC module requiring to be connected via the front plug, and contact with the mating contacts is enabled at least partially on a side of the bottom contact strip that side faces away from the top side.