The join means of PLC and this 7 kinds of equipment, look to understand!

PLC and advocate your electric equipment kind the join of equipment pursues 1 be wait with switch of pushbutton, journey, transfer switch advocate your electric equipment kind the wiring sketch map that inputs equipment. The PLC in the graph collects the input that choose form for dc, namely all input feature is common a public end COM, DC24V power supply is contained inside COM end at the same time. If in group type input, also can consult the method of the graph below the graph undertakes joining in group. Graph 1PLC and advocate your electric equipment kind the join that inputs equipment 2.

PLC and rotate the join of coder rotates coder is type of a kind of photoelectricity rotates measurement unit, it changes the angular displacement that is measured into digital signal directly (signal of high speed pulse) . Because of some but will rotate the output pulse signal of coder inputs PLC directly, the high speed tally that uses PLC has count to its pulse signal, measure an outcome in order to obtain. The whirl of different type coder, its output the photograph number of pulse to also differ, some whirl pulse of three-phase of coder output A, B, Z, some has two-phase of photograph of A, B only, the simplest have A look only. Graph 2 rotate the whirl that the join of coder and PLC is shown 2 times like the graph is output two-phase pulse the join sketch map of coder and FX series PLC. Coder has 4 lead, among them 2 are pulse output line, 1 is COM end line, 1 is power supply cord. The power source of coder can be outside receive power source, also can use the DC24V power source of PLC directly. Power source " - " end should carry join with the COM of coder, "+ " carry join with the power source of coder. The COM end of coder and PLC input COM carry join, line of output of pulse of two-phase of A, B is direct carry join with the input of PLC, the noise that should notice PLC is inputted when join is in season. Some whirl coder still has line of a screen, when using, want screen line ground connection. 3.

The sort of the join sensor of PLC and sensor is very much, its export way also each are not identical. Should use when be close to the sensor of two lines type such as switch, photoelectricity switch, because the leakage current of sensor is bigger, the input signal and brings about PLC misoperation of likelihood occurrence mistake, can carry R of shunt-wound bypass resistor in PLC input right now, if pursue,3 are shown. Need not consider its to affect when leakage current is not worth LmA. In type: The leakage current that I is sensor (MA) , the upper limit that UOFF inputs electric depress n for PLC is worth (V) , the input impedance that RC is PLC (K Ω ) , the value of RC has difference according to inputting a dot to differ. 4.

PLC and the join of many switch that dial a code if the certain data in PLC control system needs to often be revised, can use many switch that dial a code and PLC connection, in PLC exterior have data set. If the graph is shown 4 times, dial the sketch map of a switch for, a 0 ～ that dial a switch to be able to input a decimal numeral 9, or the 0 ～ F of a hexadecimal number. If the graph is shown 5 times,the graph dials the sketch map of a switch 4, 4 switch that dial a code are assembled together, the COM end each switch that dial a code is together repeatedly, receive the COM terminal that inputs side in PLC to go up. The 4 data line of every switch that dial a code receives the 4 inputs dot in PLC to go up by certain order. See by the graph, use the switch that dial a code to want to take up a lot of PLC input a dot, not be very necessary circumstance so, do not use this kind of method commonly. Graph 5 4 the join of the switch that dial a code and PLC 5.

When PLC and the join PLC that output equipment switch and output equipment join, different group (different and public end) output a dot, its correspondence exports equipment (laden) voltage type, grade is OK and different, but with group (identical and public end) output a dot, its voltage type and order and degree should be same. Want to decide to whether join in group according to outputting the type of equipment voltage and grade. If the graph is shown 6 times,be the join method of a demonstrative PLC and output equipment with FX2N. The standard is being received in the graph is the circumstance that outputs equipment to have same power source, so each groups public end is together repeatedly, want to join in group otherwise. A Y0-Y7 is drawn to output dot and the join that export equipment only in the graph, other outputs the join method likeness of the dot. Graph 6PLC and the join that export equipment 6.

The output of PLC and perceptual and laden join PLC is carried often connective is perceptual output equipment (perceptual load) , the voltage of the generation when disconnecting to restrain perceptual circuit makes PLC interior outputs component to cause damage. When because this is become,PLC and perceptual output equipment join, if be load of straight flu sex, should be in its diode of follow on current of two upright paralell connection; If be communication sensibility load, should in its look of block of two upright paralell connection draws circuit. If pursue,6-10 place is shown. In graph 7PLC and the join graph that sensibility exports equipment, diode of follow on current is 3 times what be more than power source voltage for 1A, rated voltage with rated electric current more optional; Resistance is desirable 50~120 Ω , capacitance value is desirable 0.

1~0.

47 μ F, the rated voltage of capacitance should be more than the peak value voltage of power source. The polarity of diode of follow on current should notice when wiring. 7.

PLC and 7 paragraphs of join PLC of LED monitor can measure the join of output and monitor of 7 paragraphs of LED with switch directly, but if PLC pilot is many LED7 segment display implement, wants output place is very much. If graph 8PLC and two join of monitor of lamp of 7 paragraphs of LED pursue 8 are shown, in circuit, collect appliance to the lock is put, the chip CD4513 drive of function of coding, drive in all cathode LED7 segment display implement, the data input of two CD4513 carries A ～ D common the 4 output luck of PLC, among them A is lowest, d is the most exalted. LE is the lock is put make can input end, the BCD number lock that inputs data upright input in the ascendant edge of LE signal exists a register inside is medium, after counting this coding, show come. If of the input is not decimal numeral, monitor goes out. When LE is tall n, indication number does not suffer data to input the influence of signal. Apparent, n the output check the number that monitor takes up is P=4 ＋ N. If PLC uses relay to output module, answer to output termination to help resistance each in the PLC that is linked together with CD4513, the input end of the CD4513 when disconnecting in order to avoid the contact in output relay is impending. When PLC outputs the condition of relay to change, its contact may shake, because this answers to send data to output signal first, after waiting for this signal to stabilize, the ascendant edge of reoccupy LE signal keeps data lock into CD4513. CNC Milling