• XORQT XOR function block. The function also propagates timestamp andquality of input signals. Each block has two outputs where one is inverted.• TIMERSETQT function has pick-up and drop-out delayed outputs related to theinput signal. The timer has a settable time delay. The function also propagatestimestamp and quality of input signal.• ANDQT AND function block. The function also propagates timestamp andquality of input signals. Each block has four inputs and two outputs where one isinverted.• SRMEMORYQT function block is a flip-flop that can set or reset an output fromtwo inputs respectively. Each block has two outputs where one is inverted. Thememory setting controls if the block after a power interruption should return tothe state before the interruption, or be reset. The function also propagatestimestamp and quality of input signal.• RSMEMORYQT function block is a flip-flop that can reset or set an output fromtwo inputs respectively. Each block has two outputs where one is inverted. Thememory setting controls if the block after a power interruption should return tothe state before the interruption, or be reset. The function also propagatestimestamp and quality of input signal.• 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. Thetimestamp of an output will be set to the latest timestamp of INPUT and VALIDinputs.• INDCOMBSPQT combines single input signals to group signal. Single positioninput is copied to value part of SP_OUT output. TIME input is copied to time partof SP_OUT output. Quality input bits are copied to the corresponding quality partof SP_OUT output.• INDEXTSPQT extracts individual signals from a group signal input. Value partof single position input is copied to SI_OUT output. Time part of single positioninput is copied to TIME output. Quality bits in common part and indication partof inputs signal is copied to the corresponding quality output.13.3.1.2 OR function blockIdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberOR Function block OR - -1MRK 504 135-UEN A Section 13Logic379Technical manual