CN206162973U - Portable PLC experiment appearance and system - Google Patents
Portable PLC experiment appearance and system Download PDFInfo
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- CN206162973U CN206162973U CN201621144138.XU CN201621144138U CN206162973U CN 206162973 U CN206162973 U CN 206162973U CN 201621144138 U CN201621144138 U CN 201621144138U CN 206162973 U CN206162973 U CN 206162973U
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Abstract
The utility model provides a portable PLC experiment appearance and system relates to experimental facilities technical field. Portable PLC experiment appearance is including experiment appearance body. Be provided with the function panel on the experiment appearance body. Test this the internal PLC of being provided with unit of appearance and do portable PLC experiment appearance provides the power module of electric energy. Be provided with elementary instruction display element, digital display element, basic command input unit and extensions unit on the function panel. Portable PLC experiment appearance is small, light in weight, conveniently carry. Portable PLC experiment appearance is from taking DC power supply, breaks must fix when testing in the past and carries out the limitation of operating in the laboratory. Teachers and students can carry portable PLC experiment appearance anytime and anywhere experiment operate, has strengthened the teaching effects that puts into practice of portable PLC course, has improved the security and the reliability of the portable PLC experiment appearance body.
Description
Technical field
The utility model is related to technical field of experiment equipment, in particular to a kind of portable PLC experiment instruments and is
System.
Background technology
The introduction of programmable logic controller (PLC) (Programmable Logic Controller, abbreviation PLC), apply, grind
System, production are accompanied by reforming and opening up to the outside world what is started.It is initially to have used PLC in a large number in introducing equipment, next in various enterprises
The application of PLC is constantly expanded in the production equipment and product of industry.Current China oneself can produce middle-size and small-size PLC and set
It is standby.
The power supply requirement of the PLC experiment instruments for using in colleges and universities at present is 1.5kVA, and equipment volume is heavy greatly, and price is held high
It is expensive, take up space big, experiment interior can only be placed in, teachers and students complete experiment and are confined in laboratory, it is impossible to carry PLC experiment instruments
Tested whenever and wherever possible.PLC experiment instrument I/O interfaces are few, it is impossible to meet experiment demand.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of portable PLC experiment instruments.It is described to take the experiment of formula PLC
Instrument extends I/O interfaces, increased power module, to improve the problems referred to above.
Another object of the present utility model is to provide a kind of system of the portable PLC experiment instruments.The system work(
Can be many, it is safe, it is highly reliable.
The utility model preferred embodiment provides a kind of portable PLC experiment instruments.The portable PLC experiment instruments include：
Experiment instrument body.
The function panel being arranged on the experiment instrument body.
It is arranged on the intrinsic PLC unit of the experiment instrument.
Elementary instruction display unit, digital-scroll technique unit, the elementary instruction input block being arranged on the function panel
And functional expansion unit.Wherein, the elementary instruction input block is connected with the PLC unit, for generating input switch amount,
As the input signal of the PLC unit.The PLC unit includes high level or low level according to input signal output
Output signal.The elementary instruction display unit is connected with the PLC unit, for lighting or putting out according to the output signal
Go out.The digital-scroll technique unit is connected with the PLC unit, for showing corresponding numerical value according to the output signal.Institute
State functional expansion unit to be connected with the PLC unit, including for provide for external equipment power supply direct current jack and
Earth jack.
It is provided with the function panel multiple for by the elementary instruction display unit, digital-scroll technique unit, basic
The connection terminal that instruction input unit, functional expansion unit are coupled together with the PLC unit.
For the power module that the portable PLC experiment instruments provide electric energy, the power module is including power interface and fills
Battery.
Further, the elementary instruction input block in above-mentioned portable PLC experiment instruments include Self-resetting button and
Toggle switch, the Self-resetting button and toggle switch are connected with power supply, and the Self-resetting button and toggle switch are used to receive
Subscriber switch input generates analog signal, and as the input signal PLC unit is delivered to.
Further, in above-mentioned portable PLC experiment instruments the Self-resetting button, toggle switch and the power module
Between be in series with anti-overflow resistance.
Further, the elementary instruction display unit in above-mentioned portable PLC experiment instruments is included described in multiple bases
The light emitting diode that output signal is lighted or extinguished.
Further, the digital-scroll technique unit in above-mentioned portable PLC experiment instruments is included according to the output signal
Show the charactron of digital code information.
Further, the PLC unit in above-mentioned portable PLC experiment instruments includes：
For the high level in the input signal to be converted to into low level incoming level conversion subunit.
It is connected with the incoming level conversion subunit, for analyzing the input signal and generating the output signal
Process subelement.
With it is described process subelement be connected, for by the low transition in the output signal for high level output
Level conversion subelement.
Further, above-mentioned PLC unit generates alarm signal when the output signal meets preset alarm condition, described
Digital-scroll technique unit also includes：
For sending the buzzer of sound prompting according to the alarm signal.
For the warning flashing lamp flashed according to the alarm signal.
Further, the functional expansion unit in above-mentioned portable PLC experiment instruments includes that power switch, USB are communicated
Mouth, voltmeter.
Further, the connection terminal in above-mentioned portable PLC experiment instruments is banana bin.
Preferred embodiment of the present utility model also provides a kind of portable PLC and tests instrument system, the portable PLC experiments
Instrument system includes above-mentioned portable PLC experiment instruments.
The utility model provide portable PLC experiment instruments compared with existing PLC experiment instruments, the portable PLC realities
Test instrument be convenient for carrying, it is cheap.The portable PLC experiment instruments carry dc source, and once charging to use for a long time.
The portable PLC experiment instruments are applied widely, can both be adapted to the practice-training teaching of all kinds of middle School of High Profession Technology, can also be adapted to
The practical teaching of engineering of all kinds of teachers and students, while being more suitable for all kinds of Skill Competitions or skill examination.Teachers and students can be broken with staff one
In the past the limitation that laboratory is operated was must be fixedly arranged at during experiment, teachers and students can carry the portable PLC experiment instruments at any time
Everywhere carry out experimental implementation.The portable PLC experiment instruments expansion I/O interface, strengthens the practical teaching effect of PLC courses
Really；Functional expansion unit is increased, the experimental considerations unit of grafting difference in functionality, the function of way of extensive experimentation instrument can be passed through.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the utility model embodiment, below will be to use needed for embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
The module diagram of a kind of portable PLC experiment instruments that Fig. 1 is provided for the utility model embodiment.
The function panel schematic diagram of a kind of portable PLC experiment instruments that Fig. 2 is provided for the utility model embodiment.
The level translation circuit connection signal of a kind of portable PLC experiment instruments that Fig. 3 is provided for the utility model embodiment
Figure.
The elementary instruction display unit circuit of a kind of portable PLC experiment instruments that Fig. 4 is provided for the utility model embodiment
Connection diagram.
The elementary instruction input-cell circuitry of a kind of portable PLC experiment instruments that Fig. 5 is provided for the utility model embodiment
Connection diagram.
Icon：The portable PLC experiment instruments of 100-；110- function panels；111- elementary instruction display units；112- is digital aobvious
Show unit；1121- buzzers；1122- warning flashing lamps；113- elementary instruction input blocks；1131- Self-resetting buttons；1132-
Toggle switch；114- functional expansion units；1141- power switches；1142-USB communication ports；1143- voltmeters；115- connection ends
Son；120-PLC units；121- incoming level conversion subunits；122- processes subelement；123- output level conversion subunits；
130- power modules.
Specific embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than the reality of whole
Apply example.The component of the utility model embodiment generally described and illustrated in accompanying drawing herein can be come with a variety of configurations
Arrangement and design.Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit
Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
Fig. 1 is refer to, embodiment of the present utility model provides a kind of portable PLC experiment instruments 100.The portable PLC
Experiment instrument 100 includes experiment instrument body.Function panel 110 is provided with the experiment instrument body.In the experiment instrument body
Inside it is provided with PLC unit 120.
Elementary instruction display unit 111, digital-scroll technique unit 112, elementary instruction are provided with the function panel 110
Input block 113 and functional expansion unit 114.
For the power module 130 that the portable PLC experiment instruments 100 provide electric energy, the power module 130 includes power supply
Interface and rechargeable battery.
Specifically, the elementary instruction input block 113 is connected with the PLC unit 120, for generating input switch
Amount, as the input signal of the PLC unit 120.The PLC unit 120 includes high level according to input signal output
Or low level output signal.The elementary instruction display unit 111 is connected with the PLC unit 120, for according to described defeated
Go out signal to light or extinguish.The digital-scroll technique unit 112 is connected with the PLC unit 120, for according to the output letter
Number show corresponding numerical value.The digital-scroll technique unit 112 can be designed to two-way nixie display, and two-way nixie display can
Different data messages are shown with independent.The functional expansion unit 114 is connected with the PLC unit 120, including for for
External equipment provides the direct current jack and earth jack of power supply.If way of extensive experimentation need to be done, only experiment module need to be inserted
Can be tested in the jack for having designed.
In this specific embodiment, the portable PLC experiment instruments 100 are designed, the design based on PLC single board computers
Experiment instrument bulk volume is reduced, the weight of the portable PLC experiment instruments 100 is alleviated, cost of manufacture is decreased.For side
Portable belt, the experiment instrument body in the embodiment of the present application can be made box, and concrete size can determine according to actual conditions.Electricity
Rechargeable battery in source module 130 can provide 24V dc sources, allow the portable PLC experiment instruments 100 without outer
Portion's power supply is used in the case of supplying.And can be used with facilitating test next time using being charged after finishing.
Fig. 1 is refer to, in this specific embodiment, the PLC unit 120 in the portable PLC experiment instruments 100 is wrapped
Include：For the high level in the input signal to be converted to into low level incoming level conversion subunit 121；With the input
Level conversion subelement 121 is connected, and the incoming level for analyzing the input signal and generate the output signal is changed
Subelement 121；It is connected with the incoming level conversion subunit 121, for by the low transition in the output signal
For the output level conversion subunit 123 of high level.
Fig. 2 is refer to, in this specific embodiment, incoming level conversion subunit 121 can be the tunnel relay of isolated form 20
Device control module, incoming level conversion subunit 121 can be the PLC single board computers of model STLK-CPU226, and output level turns
It can be the tunnel relay control module of isolated form 16 to change subelement 123.Can by high-low-high level signal all the way conversion as a example by,
It is described in detail：The photo-ionisation chip common port XM of the tunnel relay control module of isolated form 20 is grounded, DC+ is connecing power supply just
Pole, DC- ground connection, normally open contact breaking-off contact ground connection, public contact is connected with the input port I0.0 of PLC unit 120, when finger substantially
When making the I0.0 of input block 113 be input into a high level signal, corresponding K1 relay adhesives, now incoming level conversion
Subelement 121 will export a low level, and signal is sent to the I0.0 input ports of PLC single board computers, mono- in PLC by PLC single board computers
Q0.0 corresponding to trigger I0.0 exports a low level signal, and the low level signal is delivered to into the road Control of isolated form 16
(now the photoelectric isolated chip common port XM of the tunnel relay control module of the isolated form 16 is connecing power supply just for the X1 input ports of module
Pole, DC+ connect positive source, DC- and connect power cathode, and normally open contact connects experiment instrument positive source, public contact and PLC unit 120
Delivery outlet Q0.0 connections) relay road K1 adhesives now corresponding to 16 tunnel relay control modules, output end export one it is high
Level signal.The conversion of height high level is completed through above procedure.
Fig. 3 is refer to, in this specific embodiment, is provided with the function panel 110 multiple for will be described basic
Instruction display unit 111, digital-scroll technique unit 112, elementary instruction input block 113, functional expansion unit 114 and the PLC
The connection terminal 115 that unit 120 is coupled together.Connection terminal 115 on the function panel 110 is more, for more preferable area
Divide the function of modules, the printed words of some corresponding functions, such as " digital-scroll technique list can be stamped on function panel 110
The printed words such as unit ", " elementary instruction display unit ", can also enter line label or mark to connection terminal 115, convenient to recognize and connect
Connect.
Connection terminal 115 in this specific embodiment can be banana bin, can be by different lists using connecting wire
Unit couples together.
Elementary instruction input block 113 can include Self-resetting button 1131 and toggle switch 1132, and the Self-resetting is pressed
Button 1131 and toggle switch 1132 are connected with power supply, and the Self-resetting button 1131 and toggle switch 1132 are opened for receive user
Close input and generate analog signal, as the input signal PLC unit 120 is delivered to.
The quantity of Self-resetting button 1131 and toggle switch 1132 can determine according to actual conditions, each Self-resetting button
1131 and toggle switch 1132 can correspond to a banana bin, can be by Self-resetting button by connecting corresponding banana bin
1131 or toggle switch 1132 be linked in circuit.The model of banana bin can as the case may be depending on, for example can use
Jack internal diameter is 2 millimeters of banana bin.
By the switching value to Self-resetting button 1131 or toggle switch 1132 come simulated field signal, by the switch of input
Amount Jing PLC units 120 calculate the corresponding signal of analysis output.Its function is illustrated so that toggle switch 1132 is input into as an example：Will be basic
The a certain connection terminal 115 of instruction input unit 113 is connected by wire with the input port of PLC unit 120, by control knob
Switch 1132 is input into a level signal, and Jing PLC analytical calculations are exportable corresponding level signal.
Refer to Fig. 4, in this specific embodiment, in order to prevent circuit in overcurrent cause device failure, described
Anti-overflow resistance is in series between Self-resetting button 1131, toggle switch 1132 and the power supply.Anti-overflow resistance can be with
It is 2k Ω, between each Self-resetting button 1131 and power module 130, each toggle switch 1132 and power module 130
Between anti-overflow resistance can be set.
Fig. 5 is refer to, in this specific embodiment, the elementary instruction display unit 111 can include multiple according to institute
State the light emitting diode that output signal is lighted or extinguished.The quantity of light emitting diode can according to actual needs determine that each is sent out
Optical diode is all connected with a connection terminal 115, by connecting corresponding connection terminal 115, can connect light emitting diode
Enter in circuit.The high level or low level in output signal is represented by the light on and off of light emitting diode.It is high in output signal
During level, lumination of light emitting diode does not light when output signal is low level.
Specifically, light emitting diode internal resistance very little, needs additional current-limiting resistance to be used for preventing overvoltage, overcurrent, overheated
The infringement that Light-Emitting Diode is brought.Light-Emitting Diode current-limiting resistance R's can be calculated by current limliting formula：
R=(Vcc-Vp×N)÷I
For example, common emitting red light diode pressure drop is 2.0-2.2V, and the maximum current passed through during work is generally 10-
20mA.The output end voltage of PLC unit 120 is VccFor 24V, the pressure drop V of Light-Emitting DiodepThe maximum current I for take 2.2V, passing through takes
10mA, number N of light-emitting diode of connecting takes 1, and the current-limiting resistance required for can calculating is 2.2k Ω.Can tie according to calculating
The current-limiting resistance of fruit one 2.2k Ω of series connection on each diode circuit, the resistance of its current-limiting resistance can also meet above-mentioned
Other resistances of condition.
In this specific embodiment, the digital-scroll technique unit 112 includes showing digital code information according to the output signal
Charactron.Respective value can be directly displayed by charactron.The charactron can be that the LED of model 1106AS is digital
Pipe.
Specifically, the circuit of the LED charactrons by show decoding unit, power conversion unit, numeral method output
Unit and the part of input block four are constituted.The display decoding unit can be CD4511 display decoders.Because described portable
The supply voltage of PLC experiment instruments 100 is 24V, and the operating voltage of CD4511 display decoders is 3-18V, is needed plus a power supply
Conversion unit, is reduced to 24V 12V and powers for CD4511 display decoders.Power conversion unit can adopt model LM2576-
12 adjusting and voltage-reduction switch stabilized-voltage power supply controller.
Power conversion unit needs four peripheral cells.First peripheral cell：In order to reduce input transient voltage, be
LM2576-12 provides transient current in switch every time, and a shunt capacitance is accessed on 1 pin, and capacitance typically can be big
In or equal to 100 μ F.Second peripheral cell：It is the stability for output being filtered and being improved loop, can be in LM2576-
12 output end connects an output capacitance, and the pressure voltage of the electric capacity is typically greater than 1.5-2 times of rated output voltage.
3rd peripheral cell：Loop is provided for inductive current during shut-off, in output end the pole of afterflow two can be connected
Pipe, the load current value of diode is generally higher than 1.2 times of maximum load current, it is contemplated that short circuit problem, diode it is specified
Current value should also be larger than the limits value of LM2576-12 maximum currents.The backward voltage of diode typically should be greater than maximum input electricity
1.25 times of pressure, the diode can be that Schottky 1N5822 diodes (have the spy that switching speed is fast, forward voltage drop is little
Point).Fourth peripheral element：Switching regulaor has two kinds of basic working methods, i.e. continuous type and discrete.Between the two
Difference essentially consist in flow through inductance electric current it is different, if that is, inductive current is continuous is then referred to as continuous type, if inductive current
Zero is dropped in a switch periods for discrete.Each mode of operation can affect switching regulaor performance and
Require.When the operating characteristic that under load current, continuous type mode of operation has had and larger power output, less can be provided
Peak-to-peak value electric current and less ripple voltage.Specific inductance can be determined according to the delicate constant of voltage and load current curve
Value.
One illustration is done with the circuit theory of a LED charactron.CD4511 display decoders have BCD conversions, disappear
Cmos circuit that is hidden and latching control, seven sections of decodings and driving function, can provide larger sourcing current, can directly drive LED and show
Show device, the advantages of wiring is simple.Input in four inputs (D, C, B, A) of CD4511 display decoders and plate face (D1,
C1, B1, A1) correspondingly connect, the input (a- of CD4511 display decoder output ends (a1-g1) Jing current-limiting resistances and charactron
G) correspondence connection, LT, BI pin connects high level, LE pins ground connection.The charactron electric current to be passed through can be 10-20mA, real
Test and show, when the electric current of 10mA passes through the brightness of charactron to meet our requirement, due to CD4511 display decoders output
Voltage is 12V, so must need, with a current-limiting resistance, to be calculated according to above-mentioned current limliting formula.Wherein Vcc represents CD4511 output electricity
Pressure, Vf represents the pressure drop of each segment numeral pipe, and N represents the number of charactron, and I represents the electric current that can pass through, and is computed needing 1k
The current-limiting resistance of Ω.Experiment shows that four inputs of CD4511 are shown as high level, numeral method " day " when hanging；
Connection ground connection divider resistance, with the case where input DCBA is hanging as low level, numeral method " 0 ".
The input block of the circuit of the LED charactrons can adopt two kinds of input modes, and one kind is above-mentioned utilization
The input mode of the 8421BCD codes of CD4511 display decoders；Another is direct control mode, seven of seven segment digital tubes
Input (a1-g1) in input (a-g) correspondence connection plate face, can add the current-limiting resistance of 2.2K (in order to avoid electric current
Excessive logarithmic code pipe produces damage), when having port to be powered in input (a1-g1), then LED numbers corresponding with the port being powered
Code pipe is just lit.
In this specific embodiment, the elementary instruction display unit 111 in the portable PLC experiment instruments 100 is wrapped
Include multiple light emitting diodes lighted according to the output signal or extinguish.
Specifically, the function of the elementary instruction display unit 111 is by the result Jing after PLC unit 120 calculates analysis
Intuitively showed by the light on and off of Light-Emitting Diode.For example：The delivery outlet Q0.0 Jing wires of PLC unit 120 are connected to institute
The Q0.0 of elementary instruction display unit 111 is stated, PLC unit 120 is counted the switching value that elementary instruction input block 113 is input into
Point counting is analysed, and is exported corresponding level signal by the delivery outlet Q0.0 of PLC unit 120 and is reached elementary instruction display unit 111
Q0.0, (outputs level signals are not sent out when being high level LED lighting, low level to embody result by the light on and off of light emitting diode
Light).
Fig. 1 is refer to, in this specific embodiment, the PLC unit 120 meets preset alarm bar in the output signal
Alarm signal is generated during part, the digital-scroll technique unit 112 also includes：For sending sound prompting according to the alarm signal
Buzzer 1121；For the warning flashing lamp 1122 flashed according to the alarm signal.
Specifically, remind teachers and students that experiment is broken down by sound and passage of scintillation light, its failure can be that external experiment connects
Connect the failure, or the portable internal fault of PLC experiment instruments 100 of circuit, its main cause is generally overcurrent,
Overvoltage.PLC unit 120 can extend and the overcurrent in connecting for detecting circuit or overvoltage transformer.Work as circuit
When producing overcurrent or overvoltage, signal an alert, and in the sounding of buzzer 1121 is flashed with warning flashing lamp 1122 extremely
Occurs a kind of alarm less.
Fig. 1 is refer to, the functional expansion unit in this specific embodiment, in the portable PLC experiment instruments 100
114 include power switch 1141, USB communication ports 1142, voltmeter 1143.
Specifically, the power switch 1141 can be power supply commutator.For example, commutator is pressed to discharge side,
Portable PLC experiment instruments 100 are powered；When commutator is pressed to charged side, i.e., dc source is charged；Work as commutator
Neither charge when being placed in centre position nor discharge.USB communication ports 1142, are connected by data wire with USB communication ports 1142, can
To carry out download program to PLC single board computers.Voltmeter 1143 can be two-way voltmeter 1143, for monitoring that inverter is exported
The rechargeable battery voltage that voltage and experiment instrument are equipped with.
In sum, the utility model provide portable PLC experiment instruments compared with traditional PLC experiment instruments, it is described just
Take formula PLC experiment instrument small volume, it is lightweight be convenient for carrying, it is cheap.The portable PLC experiment instruments carry dc source,
Once charging to use for a long time.The portable PLC experiment instruments are applied widely, can both be adapted to all kinds of middle School of High Profession Technology
The practice-training teaching in school, the practical teaching of engineering that all kinds of teachers and students can also be adapted to, while being more suitable for all kinds of Skill Competitions or technical ability is examined
Core.Teachers and students can must be fixedly arranged at the limitation that laboratory is operated with staff one when breaking experiment in the past, and teachers and students can carry
The portable PLC experiment instruments carry out anywhere or anytime experimental implementation.The portable PLC experiment instruments expansion I/O interface, strengthens
The practical teaching effect of PLC courses；Functional expansion unit is increased, by the experimental considerations unit of grafting difference in functionality, extension is real
Test the function of instrument.Increase for the flashing lamp reported to the police and buzzer, improve the portable PLC experiment instruments and its system
Safety and reliability.
In addition, each functional module in the utility model each embodiment can integrate to be formed one it is independent
Part, or modules individualism, it is also possible to which two or more modules are integrated to form an independent part.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.It should be noted that
Arrive：Similar label and letter represents similar terms in following accompanying drawing, therefore, once determined in a certain Xiang Yi accompanying drawing
Justice, then need not further be defined and be explained in subsequent accompanying drawing to it.Additionally, term " first ", " second ", "
Three ", " 4th " etc. is only used for distinguishing description, and it is not intended that indicating or implying relative importance.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any those familiar with the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be described with power
The protection domain that profit is required is defined.
Claims (10)
1. a kind of portable PLC experiment instruments, it is characterised in that include：
Experiment instrument body；
The function panel being arranged on the experiment instrument body；
It is arranged on the intrinsic PLC unit of the experiment instrument；
It is arranged on elementary instruction display unit on the function panel, digital-scroll technique unit, elementary instruction input block and work(
Energy expanding element, wherein：
The elementary instruction input block is connected with the PLC unit, for generating input switch amount, as the PLC unit
Input signal；The PLC unit is according to input signal output comprising high level or low level output signal；The base
This instruction display unit is connected with the PLC unit, for lighting or extinguishing according to the output signal；The digital-scroll technique list
It is first to be connected with the PLC unit, for showing corresponding numerical value according to the output signal；The functional expansion unit and institute
State PLC unit to be connected, including for providing the direct current jack and earth jack of power supply for external equipment；
It is provided with the function panel multiple for by the elementary instruction display unit, digital-scroll technique unit, elementary instruction
The connection terminal that input block, functional expansion unit are coupled together with the PLC unit；
For the power module that the portable PLC experiment instruments provide electric energy, the power module is including power interface and charges electric
Pond.
2. portable PLC experiment instruments according to claim 1, it is characterised in that the elementary instruction input block includes
Self-resetting button and toggle switch, the Self-resetting button and toggle switch are connected with power supply, the Self-resetting button and button
Switch and generate analog signal for receive user switch input, as the input signal PLC unit is delivered to.
3. portable PLC experiment instruments according to claim 2, it is characterised in that the Self-resetting button, toggle switch with
Anti-overflow resistance is in series between the power module.
4. portable PLC experiment instruments according to claim 1, it is characterised in that the elementary instruction display unit includes
Multiple light emitting diodes lighted according to the output signal or extinguished.
5. portable PLC experiment instruments according to claim 1, it is characterised in that the digital-scroll technique unit includes basis
The output signal shows the charactron of digital code information.
6. portable PLC experiment instruments according to claim 1, it is characterised in that the PLC unit includes：
For the high level in the input signal to be converted to into low level incoming level conversion subunit；
It is connected with the incoming level conversion subunit, for analyzing the input signal and generating the place of the output signal
Reason subelement；
With it is described process subelement be connected, for by the low transition in the output signal for high level output level
Conversion subunit.
7. portable PLC experiment instruments according to claim 1, it is characterised in that the PLC unit is in the output signal
Alarm signal is generated when meeting preset alarm condition, the digital-scroll technique unit also includes：
For sending the buzzer of sound prompting according to the alarm signal；
For the warning flashing lamp flashed according to the alarm signal.
8. portable PLC experiment instruments according to claim 1, it is characterised in that the functional expansion unit includes power supply
Switch, USB communication ports, voltmeter.
9. portable PLC experiment instruments according to claim 1, it is characterised in that the connection terminal is banana bin.
10. a kind of portable PLC tests instrument system, it is characterised in that the portable PLC experiments instrument system includes above-mentioned portable
Formula PLC experiment instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144138.XU CN206162973U (en) | 2016-10-21 | 2016-10-21 | Portable PLC experiment appearance and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144138.XU CN206162973U (en) | 2016-10-21 | 2016-10-21 | Portable PLC experiment appearance and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206162973U true CN206162973U (en) | 2017-05-10 |
Family
ID=58655118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621144138.XU Expired - Fee Related CN206162973U (en) | 2016-10-21 | 2016-10-21 | Portable PLC experiment appearance and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206162973U (en) |
-
2016
- 2016-10-21 CN CN201621144138.XU patent/CN206162973U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170510 Termination date: 20181021 |