CN204287877U - A kind of PLC debugging instrument with dipole inversion function - Google Patents
A kind of PLC debugging instrument with dipole inversion function Download PDFInfo
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- CN204287877U CN204287877U CN201420713237.XU CN201420713237U CN204287877U CN 204287877 U CN204287877 U CN 204287877U CN 201420713237 U CN201420713237 U CN 201420713237U CN 204287877 U CN204287877 U CN 204287877U
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Abstract
The utility model discloses a kind of PLC debugging instrument with dipole inversion function, comprise input state instruction interface, current source and voltage source, export the output switch parameter interface that control interface is electrically connected described PLC, current source is electrically connected the analog input interface of described PLC, voltage source is electrically connected the analog output interface circuit of described PLC, also include the input polarization converting unit for changing PLC input port polarity, and hold polarization converting unit for the output COM of the PLC external equipment controlling opposed polarity requirement.The utility model can not only meet analog input and output, the ideal tools of the front current cost that the debugging box of dipole inversion and analog encoder signals conveniently can be provided again to be these hardware effort simultaneously, increase work efficiency, save the equipment development cycle, save.
Description
Technical field
The utility model relates to electric adjustment instrument field, particularly relates to a kind of PLC debugging instrument with dipole inversion function.
Background technology
Along with the development of industrial automation, the application of PLC is more and more extensive.The numeral input of PLC, output signal mainly contain two kinds: i.e. source type and leakage type.When two kinds of signals connect PLC, because the difference of polarity is also different for inputing or outputing the method being connected to PLC.
In automatic field, need to force input and output, to facilitate the debugging of program in a program.Therefore this mode timeliness and operability is forced to receive many restrictions and inconvenience to input and output in a program; Simultaneously for different peripherals, PLC part inputs or outputs and also needs to carry out wiring by source type and leakage type mode to the polarity of input power.
The high speed of PLC itself is inputted, the application of the scrambler of counter and periphery, do not have peripherals then cannot carry out.The input and output signal of existing PLC debugging instrument is generally only directed to source type or leakage type is wherein a kind of, cannot meet the needs using various polarity input and output in same scheme; Not there is continuously adjustable pulse signal, cannot debug the control of counter, stepper motor and servomotor yet.When being applied to PLC debugged program, partial function still can not meet actual requirement.When debugged program, namely lose time, also affect development progress and the debugging cycle of program.
Utility model content
The purpose of this utility model is to provide a kind of PLC debugging instrument with dipole inversion function, can meet analog input and output, can conveniently provide dipole inversion and analog encoder signals again simultaneously.
The utility model adopts following technical proposals:
There is a PLC debugging instrument for dipole inversion function, for debugging PLC scene, comprise On-off signal signal, simulated field are provided proximity switch, button, selector switch, relay contact switching signal input state instruction interface, the current source of the simulating signal of the electric current of analog input signal, simulated field temperature, pressure, flow, motor is provided, and analog quantity output signals is provided, simulate the actuator that described PLC drives, the voltage source of the simulating signal of solenoid valve, described output control interface is electrically connected the output switch parameter interface of described PLC, current source is electrically connected the analog input interface of described PLC, voltage source is electrically connected the analog output interface circuit of described PLC, it is characterized in that: also include the input polarization converting unit for changing PLC input port polarity, described input polarization converting unit is double-point double-throw switch, the first moving contact be fixedly connected with cutter head in described double-point double-throw switch indicates interface to be electrically connected with the switch input interface of PLC by input state, second moving contact is connected with the ICOM port of PLC, in described double-point double-throw switch, first when to throw, and the first moving contact is electrically connected with+24V, and the second moving contact is electrically connected with the ICOM port of PLC, double-point double-throw switch is when second throws, and the first moving contact is electrically connected with the ICOM port of PLC, and the second moving contact is electrically connected with+24V.
The output COM also including the PLC external equipment for controlling opposed polarity requirement holds polarization converting unit.
Described output control interface is made up of display lamp, and each interface uses two display lamps.
Described output COM holds polarization converting unit to adopt single-pole single-throw switch (SPST), and described single-pole single-throw switch (SPST) is provided with eight, is respectively used to carry out dipole inversion to eight output switch parameter interfaces of PLC; Wherein the stationary contact of single-pole single-throw switch (SPST) connects the QCOM end of PLC, first moving contact and second moving contact of single-pole single-throw switch (SPST) are connected the two ends of 24V power supply respectively, and be connected on 24V both ends of power for the first display lamp and the second display lamp showing PLC output switch parameter Interface status, be electrically connected with the output switch parameter interface of PLC between the first display lamp and the second display lamp.
It is characterized in that: also include pulse generating module, described pulse generating module comprises the square-wave generator and amplitude adjustment potentiometer that are arranged on input state instruction interface, the output terminal of described square-wave generator connects the input end of amplitude adjustment potentiometer, and the output terminal of amplitude adjustment potentiometer is connected with first and second input ports of gauge tap with the analog quantity of PLC by current-limiting circuit respectively successively.
It is characterized in that: described input state instruction interface is made up of eight input switches.
Described input switch is toggle switch.
The utility model increases input polarity reversing switch, for mating the polarity of PLC input port at input port respectively.Increase in the output and export COM end polarization converting unit, for the power supply common port of varying level is accessed, to reach the object of coupling PLC output circuit polarity.Analog input and output can not only be met, the debugging box of dipole inversion and analog encoder signals conveniently can be provided again to be these hardware effort simultaneously, increase work efficiency, save the ideal tools of equipment development cycle, the front current cost of saving.Further the utility model by arranging pulse generating module, thus provides 0.5Hz ~ 120Hz continuously adjustabe, dutycycle is the square-wave pulse signal of 50%, has the external unit of coded pulse feedback for debugging counter and simulation.Have square-wave signal, its level is 0 ~ 24VDC and frequency is 0.5Hz ~ 120Hz continuously adjustabe.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of input end dipole inversion described in the utility model;
Fig. 3 is the circuit theory diagrams of output COM end property described in the utility model conversion;
Fig. 4 is the circuit theory diagrams of pulse generating module described in the utility model.
Embodiment
As shown in Figure 1, a kind of PLC debugging instrument with dipole inversion function, for debugging PLC scene, comprise On-off signal signal, simulated field are provided proximity switch, button, selector switch, relay contact switching signal input state instruction interface, the current source of the simulating signal of the electric current of analog input signal, simulated field temperature, pressure, flow, motor is provided, and analog quantity output signals is provided, simulate the actuator that described PLC drives, the voltage source of the simulating signal of solenoid valve, described output control interface is electrically connected the output switch parameter interface of described PLC, current source is electrically connected the analog input interface of described PLC, voltage source is electrically connected the analog output interface circuit of described PLC, also include the input polarization converting unit for changing PLC input port polarity, described input polarization converting unit is double-point double-throw switch, the first moving contact 1 be fixedly connected with cutter head in described double-point double-throw switch K1 indicates interface to be electrically connected with the switch input interface of PLC by input state, second moving contact 4 is connected with the ICOM port of PLC, in described double-point double-throw switch K1, first when to throw, and the first moving contact 1 is electrically connected with+24V, and the second moving contact 4 is electrically connected with the ICOM port of PLC, double-point double-throw switch is when second throws, and the first moving contact 1 is electrically connected with the ICOM port of PLC, and the second moving contact 4 is electrically connected with+24V.Power supply described in the utility model is+24V power supply.
K1 is double-point double-throw switch as shown in Figure 2, and when K1 is placed in upper end, 1,2 of switch is connected; 4,5 connect, because 2 of switch is connected on+24V power supply, 5 are connected on common port i.e. 0 current potential of+24V power supply, so PLC will obtain electronegative potential 0 at ICOM end, if S0 closes, so will obtain noble potential 1, i.e. PLC input high level at I0 end; On the contrary, K switch 1 is placed in lower end, PLC will obtain input low level.Complete input dipole inversion (namely replacing the conversion of source type and leakage type switch) like a cork.
The output COM also including the PLC external equipment for controlling opposed polarity requirement holds polarization converting unit.As shown in Figure 3, for being output COM end dipole inversion principle.Wherein K2 is single-pole double-throw switch (SPDT), and the output terminal due to PLC is isolation, in transistor output circuit, when it is output state, is exactly by PLC inside PN junction forward conduction.Here polarity is exactly relative PN junction forward conduction, and it is divided into NPN(Negative-Positive-Negative) mode, and PNP(Positive-Negative-Positive) mode.Output COM end dipole inversion of the present utility model is exactly by change-over switch K2, changes the voltage swing at PN junction two ends, thus realizes switching the direction of current flow in the peripheral circuit of PN junction place, is also the polarity of Switching power.
Owing to wanting the polarity of Switching power output control interface described in the utility model to be made up of display lamp, and each interface uses two display lamps, thus can indicate to the state of tester's opposed polarity accurately.
Described output COM holds polarization converting unit to adopt single-pole single-throw switch (SPST), and described single-pole single-throw switch (SPST) is provided with eight, is respectively used to carry out dipole inversion to eight output switch parameter interfaces of PLC, because the connected mode of eight output switch parameter interfaces is the same, below be only described with an output switch parameter interface Q0 citing: as shown in Figure 3, the stationary contact 11 of the first single-pole single-throw switch (SPST) connects the QCOM end of PLC, first moving contact 12 and second moving contact 13 of the first single-pole single-throw switch (SPST) are connected the two ends of 24V power supply respectively, and be connected on 24V both ends of power for the first display lamp LED1 and the second display LED2 lamp showing PLC output switch parameter Interface status, be electrically connected with the first output switch parameter interface Q0 of PLC between first display lamp LED1 and the second display lamp LED2.
Also include pulse generating module, described pulse generating module comprises the square-wave generator and amplitude adjustment potentiometer that are arranged on input state instruction interface, the output terminal of described square-wave generator connects the input end of amplitude adjustment potentiometer, and the output terminal of amplitude adjustment potentiometer is connected with first and second input ports of gauge tap with the analog quantity of PLC by current-limiting circuit respectively successively.
As shown in Figure 4, the square-wave generator described in utility model is consisted of oscillatory circuit 120Hz impulse source, and this is existing product, is not specifically introducing its inner structure; Its oscillation frequency is 0.5Hz ~ 120Hz continuously adjustabe, dutycycle is 50%, amplitude is the square-wave pulse signal of 24V, after amplitude adjustment potentiometer change amplitude, it is adjustable that amplitude becomes 0 ~ 24V, and its output terminal divides two-way to export respectively by these two Switch Controller of S10, S11 outward, wherein circuit is provided with current-limiting resistance, concrete current-limiting resistance R1 is connected with the second input port I0 mouth of PLC by switch S 10, and current-limiting resistance R2 is connected with the first input end mouth I1 of PLC by switch S 11.Wherein when toggle switch S0, the toggle switch S1 of eight input switches disconnect, now turn on-switch S10, will at the second input port I0 mouth input square-wave pulse; And turn on-switch S11, then will input square-wave pulse at first input end mouth I1, the utility model also can simultaneously turn on-switch S10, S11, simultaneously at the square-wave pulse that input port I0, I1 mouth input two-way is identical.The square wave frequency adjustable of square-wave generator in the utility model, when low frequency, can debug counter, and can see count status; When high-frequency, step actuator, servo-driver isopulse control type controller can be debugged, simultaneously also can the square-wave waveform that exports of analog encoder, expand the function of debugging instrument, improve practicality and the convenience of this instrument.
Described input state instruction interface is made up of eight input switches.Described input switch is toggle switch.
It should be noted that above-mentioned instantiation only expresses embodiment of the present utility model, therefore can not be interpreted as the restriction of the utility model the scope of the claims.Protection domain of the present utility model should by claim and equivalents thereof.
The utility model, except most of signal source that can provide in PLC debug process, also can be given and use the PLC that Power Level is 24VDC directly to power.Simplify and use PLC power supply problem.This instrument contrasts existing PLC debugging instrument and has the following advantages in sum:
1. input polarity reversing switch, PLC input source type or leakage type (opposite polarity) any one on off state can be made very easily, and there is the high and low level indicating lamp of input, indicating on-off state.
2. output state, has high and low level indicating lamp.Export COM hold polarization converting unit can change PLC output polarity, for test PLC under opposed polarity state with the connection of peripherals.Test the eclipsed polarity entering power supply for the debugging dam foundation with time-code device information and carry out wiring, at debugged program,
3. output 0.5Hz ~ 120Hz continuously adjustabe, dutycycle are the square-wave pulse signal of 50%.And by switch S 10, S11, be connected on I0, I1 two input ports of PLC, be convenient to Puled input when debugging.
4. in addition, the utility model also has two kinds of analog outputs, the continuously adjustable analog voltage of the 0 ~ 10V produced by voltage source and the continuously adjustable analog current of 0 ~ 20mA produced by current source.Below all use for the test of PLC analog quantity.
The utility model solves the weak point of other debugging instruments following.First, in input, increase input state polarity reversing switch, solve the problem of PLC input source type and leakage type opposed polarity switch; Secondly, add and export COM end polarization converting unit, solve the problem needing opposed polarity when PLC external equipment connects; 3rd, provide the continuously adjustable pulse signal of 0.5Hz ~ 120Hz, achieve the function that the counter of debugging PLC, step actuator, servo-driver and analog encoder etc. are special.Meanwhile, the utility model also achieve the input of matching coding device 5V ~ 24V between the level signal continuously adjustabe of different brackets.
Claims (7)
1. there is a PLC debugging instrument for dipole inversion function, for debugging PLC scene, comprise On-off signal signal, simulated field are provided proximity switch, button, selector switch, relay contact switching signal input state instruction interface, the current source of the simulating signal of the electric current of analog input signal, simulated field temperature, pressure, flow, motor is provided, and analog quantity output signals is provided, simulate the actuator that described PLC drives, the voltage source of the simulating signal of solenoid valve, described output control interface is electrically connected the output switch parameter interface of described PLC, current source is electrically connected the analog input interface of described PLC, voltage source is electrically connected the analog output interface circuit of described PLC, it is characterized in that: also include the input polarization converting unit for changing PLC input port polarity, described input polarization converting unit is double-point double-throw switch, the first moving contact be fixedly connected with cutter head in described double-point double-throw switch indicates interface to be electrically connected with the switch input interface of PLC by input state, second moving contact is connected with the ICOM port of PLC, in described double-point double-throw switch, first when to throw, and the first moving contact is electrically connected with+24V, and the second moving contact is electrically connected with the ICOM port of PLC, double-point double-throw switch is when second throws, and the first moving contact is electrically connected with the ICOM port of PLC, and the second moving contact is electrically connected with+24V.
2. PLC debugging instrument according to claim 1, is characterized in that: the output COM also including the PLC external equipment for controlling opposed polarity requirement holds polarization converting unit.
3. PLC debugging instrument according to claim 2, is characterized in that: described output control interface is made up of display lamp, and each interface uses two display lamps.
4. PLC debugging instrument according to claim 3, it is characterized in that: described output COM holds polarization converting unit to adopt single-pole single-throw switch (SPST), described single-pole single-throw switch (SPST) is provided with eight, is respectively used to carry out dipole inversion to eight output switch parameter interfaces of PLC; Wherein the stationary contact of single-pole single-throw switch (SPST) connects the QCOM end of PLC, first moving contact and second moving contact of single-pole single-throw switch (SPST) are connected the two ends of 24V power supply respectively, and be connected on 24V both ends of power for the first display lamp and the second display lamp showing PLC output switch parameter Interface status, be electrically connected with the output switch parameter interface of PLC between the first display lamp and the second display lamp.
5. the PLC debugging instrument according to the arbitrary claim of claim 1-4, it is characterized in that: also include pulse generating module, described pulse generating module comprises the square-wave generator and amplitude adjustment potentiometer that are arranged on input state instruction interface, the output terminal of described square-wave generator connects the input end of amplitude adjustment potentiometer, and the output terminal of amplitude adjustment potentiometer is connected with first and second input ports of gauge tap with the analog quantity of PLC by current-limiting circuit respectively successively.
6. PLC debugging instrument according to claim 5, is characterized in that: described input state instruction interface is made up of eight input switches.
7. PLC debugging instrument according to claim 6, is characterized in that: described input switch is toggle switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420713237.XU CN204287877U (en) | 2014-11-25 | 2014-11-25 | A kind of PLC debugging instrument with dipole inversion function |
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| CN201420713237.XU CN204287877U (en) | 2014-11-25 | 2014-11-25 | A kind of PLC debugging instrument with dipole inversion function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106896775A (en) * | 2015-12-21 | 2017-06-27 | 施耐德电气工业公司 | For the output circuit of programmable logic controller (PLC) |
| CN106896320A (en) * | 2017-04-18 | 2017-06-27 | 苏州格联威智能科技有限公司 | A kind of PLC plates analog detection tool |
| CN106919101A (en) * | 2015-12-25 | 2017-07-04 | 中国科学院高能物理研究所 | Drive the tunable pulse signal generator of LED |
| CN107065748A (en) * | 2017-05-10 | 2017-08-18 | 许继集团有限公司 | A kind of detection means of PLC program control logic |
| CN109947087A (en) * | 2019-04-17 | 2019-06-28 | 湖南优利泰克自动化系统有限公司 | PLC input/output module test method, device, system and computer equipment |
| CN111223414A (en) * | 2020-02-17 | 2020-06-02 | 深德彩光电(深圳)有限公司 | Display module assembly capable of being installed at any angle |
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- 2014-11-25 CN CN201420713237.XU patent/CN204287877U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106896775A (en) * | 2015-12-21 | 2017-06-27 | 施耐德电气工业公司 | For the output circuit of programmable logic controller (PLC) |
| CN106919101A (en) * | 2015-12-25 | 2017-07-04 | 中国科学院高能物理研究所 | Drive the tunable pulse signal generator of LED |
| CN106919101B (en) * | 2015-12-25 | 2020-06-12 | 中国科学院高能物理研究所 | Tunable pulse signal generator for driving LED |
| CN106896320A (en) * | 2017-04-18 | 2017-06-27 | 苏州格联威智能科技有限公司 | A kind of PLC plates analog detection tool |
| CN106896320B (en) * | 2017-04-18 | 2024-01-09 | 贵州行瑞天成科技有限公司 | PLC board simulation detection jig |
| CN107065748A (en) * | 2017-05-10 | 2017-08-18 | 许继集团有限公司 | A kind of detection means of PLC program control logic |
| CN109947087A (en) * | 2019-04-17 | 2019-06-28 | 湖南优利泰克自动化系统有限公司 | PLC input/output module test method, device, system and computer equipment |
| CN111223414A (en) * | 2020-02-17 | 2020-06-02 | 深德彩光电(深圳)有限公司 | Display module assembly capable of being installed at any angle |
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