common part and the indication part of inputs signal are copied to thecorresponding quality output.• INVALIDQT function which sets quality invalid of outputs according to a"valid" input. Inputs are copied to outputs. If input VALID is 0, or if its qualityinvalid bit is set, all outputs invalid quality bit will be set to invalid. The timestamp of an output will be set to the latest time stamp of INPUT and VALIDinputs.• INVERTERQT function block that inverts the input signal and propagates thetime stamp and the quality of the input signal.• ORQT OR function block that also propagates the time stamp and the qualityof the input signals. Each block has six inputs and two outputs where one isinverted.• PULSETIMERQT Pulse timer function block can be used, for example, forpulse extensions or limiting of operation of outputs. The function alsopropagates the time stamp and the quality of the input signal.• RSMEMORYQT function block is a flip-flop that can reset or set an outputfrom two inputs respectively. Each block has two outputs where one isinverted. The memory setting controls if the block after a power interruptionshould return to the state before the interruption, or be reset. The function alsopropagates the time stamp and the quality of the input signal.• SRMEMORYQT function block is a flip-flop that can set or reset an outputfrom two inputs respectively. Each block has two outputs where one isinverted. The memory setting controls if the block after a power interruptionshould return to the state before the interruption, or be reset. The function alsopropagates the time stamp and the quality of the input signal.• TIMERSETQT function has pick-up and drop-out delayed outputs related tothe input signal. The timer has a settable time delay. The function alsopropagates the time stamp and the quality of the input signal.• XORQT XOR function block. The function also propagates the time stampand the quality of the input signals. Each block has two outputs where one isinverted.9.8.1 ANDQT function block GUID-E3023D85-FDCC-4A5F-99B4-64DA7B4AC5BB v5The ANDQT function is used to form general combinatory expressions withboolean variables. The ANDQT function block has four inputs and two outputs.Section 9 1MRK 511 424-UEN BLogic312 Bay control REC650 2.2 IECTechnical manual
