5.1.4 Selection of Count Methods• Select from the following three types according to input devices to be connected.• The count operation varies depending on the settings of multiplication factor as shown in thenext page. Count methodMethod Connection Count2-phase(Phasedifference)High-speed counter unitInput AInput ZInput BIncrementalencoderPhase A pulse inputPhase B pulse inputPhase Z input(Reset input)For the 2-phase input, the input Asignal and input B signal of eachcounter are connected to the phase Aand phase B of an encoder.The count direction depends on thephase difference between phases Aand B. When the phase A isproceeding by 90 degrees inelectrical angle than the phase B, thecount value is incremented. When thephase A is delayed by 90 degrees inelectrical angle than the phase B, thecount value is decremented.IndividualHigh-speed counter unitInput AInput BIncremental encoderorPulse generator Addition pulse inputSubtraction pulse inputIncremental encoderorPulse generatorIn the individual input method, thecounter is incremented when theinput A signal rises or falls, anddecremented when the input B signalrises or falls.DirectiondetectionInput AInput BIncremental encoderorPulse generator Pulse inputCount directionSensororSwitchHigh-speed counter unit For the direction detection input, thecount signal is connected to the inputA signal. The count direction iscontrolled by the level of the directionsignal of input B signal.When the input B signal is on, thecounter is incremented when theinput A signal rises or falls. When theinput B signal is off, the counter isdecremented.Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
