Multifunctional programmable logic controller

Abstract

A multifunctional programmable logic controller comprises an equipment main body composed of an equipment upper cover and an equipment bottom cover, and is characterized in that the equipment upper cover is provided with equipment shell screw fixing holes, and the equipment shell screw fixing holes are connected with the equipment bottom cover through screws to form an accommodating cavity; a circuit board, an input / output terminal, a bus communication terminal, a power supply terminal and an analog input / output terminal are arranged in the accommodating cavity; terminal interfaces of the input / output terminal, the bus communication terminal, the power supply terminal and the analog input / output terminal are exposed outside; the input / output terminal and the analog quantity input / output terminal are screw-free pluggable terminals; the bus communication terminal and the power supply terminal are screw plug type terminals. The device adopts a card type structural design and occupies a small space; the wire pressing type plugging terminal is free of screw connection, wiring is convenient, and replacement is convenient; the programming time is shortened to be within three seconds, long-time waiting is not needed, analog quantity differential signals are collected, and a complex bus communication protocol program does not need to be written.

Description

Technical Field

[0001] The utility model relates to the technical field of controller equipment, in particular to a multifunctional programmable logic controller. Background Art

[0002] The existing economical programmable controller adopts a board-type structure, which occupies a large space in the control cabinet; the wiring method using screw-type terminal blocks is inefficient; a low-speed interface is used for program download and debugging, which usually requires dozens of seconds of waiting, and the development efficiency is low; the analog input adopts a single-ended input hardware circuit and cannot collect differential analog quantities; complex communication protocol programs need to be written to achieve MODBUS bus communication; in motion control situations, complex control parameter conversion programs need to be written according to the field equipment, which involves more program instructions, is prone to errors and wastes more processor time, reducing the overall real-time control performance; the automatic control (PID) program only realizes the control of switch-type control objects and has a limited scope of application. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multifunctional programmable logic controller, which can effectively solve the problems raised in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a multifunctional programmable logic controller, including a device body composed of a device upper cover and a device bottom cover, characterized in that the device upper cover is provided with a device housing screw fixing hole and is connected to the device bottom cover through screws to form a accommodating cavity; a circuit board, input and output terminals, bus communication terminals, power supply terminals and analog input and output terminals are installed in the accommodating cavity, wherein the terminal interfaces of the input and output terminals, bus communication terminals, power supply terminals and analog input and output terminals are exposed to the outside; the input and output terminals and the analog input and output terminals adopt screw-free plug-in terminals; the bus communication terminals and the power supply terminals adopt screw plug-in terminals.

[0005] As a further preferred embodiment of the present invention, the input and output terminals are installed on the front of the device body, and a guide rail slot is provided on the back of the device body, and a detachable guide rail fixing component and a screw fixing mounting hole are provided on the guide rail slot; the bus communication terminal and the power supply terminal are installed on the same side of the device body, and the analog input and output terminals are installed on the other side of the device body; and the top and bottom of the device body are provided with device heat dissipation slots.

[0006] As a further preferred solution of the utility model, a touch screen connection terminal is also installed on one side of the device body, and the touch screen connection terminal and the analog input and output terminals are on the same side.

[0007] As a further preferred embodiment of the present invention, a USB Type C interface terminal and a push-button operation status switching switch are also installed on one side of the device body, and the USB Type C interface terminal and the push-button operation status switching switch are on the same side as the bus communication terminal and the power terminal.

[0008] As a further preferred solution of the present invention, an input and output status indicator light panel is also provided on the front of the device body.

[0009] As a further preferred embodiment of the present invention, the screw-free plug-in terminal is arranged to be connected to a screw-free plug-in port, and the screw-free plug-in port is composed of a screw-free plug-in connector wiring hole, a screw-free plug-in connector crimping mechanism and a connector plug-in end, wherein the connector plug-in end is connected to the screw-free plug-in terminal.

[0010] As a further preferred embodiment of the present utility model, the screw plug-in terminal is provided to be connected to a screw plug-in port, and the screw plug-in port is composed of a screw plug-in connector harness fixing screw, a screw plug-in connector plug-in end, a connector fixing screw and a connector wiring hole, wherein the screw plug-in connector plug-in end is connected to the screw plug-in terminal.

[0011] Compared with the prior art, the utility model provides a multifunctional programmable controller, which has the following beneficial effects:

[0012] The device

[0013] 1. Card-type structure design, 35mm standard DIN rail installation or screw-fixed installation on the back, small space occupation;

[0014] 2. Use crimp-type plug-in terminals, no screw connection, easy wiring and replacement;

[0015] 3. Use fast USB interface for program download and debugging, and the programming time is shortened to within three seconds, without long waiting time;

[0016] 4. Designed a differential input analog detection circuit to realize the acquisition of differential signals;

[0017] 5. Designed MODBUS bus communication function, no need to write complex protocol programs, just write communication parameters to achieve bus communication;

[0018] 6. Motion control function is designed. The unique motion control mode does not require the writing of complex conversion programs. It only needs to write basic control parameters such as shaft gear related parameters, acceleration and deceleration time, target distance, braking distance, etc. The rest of the calculation and control output are automatically completed by the internal program, which is convenient and fast;

[0019] 7. Position and incremental automatic control (PID) functions are designed, which can output accurate real number calculation results and have a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the screw-free plug-in port structure;

[0023] Figure 4 It is a schematic diagram of the screw plug-in port structure;

[0024] Figure 5 Use state diagrams for programming logic controllers.

[0025] Among them: 1. Input and output status indicator panel; 2. Input and output terminals; 3. USB Type C interface terminals; 4. Push-button operation status switch; 5. Bus communication terminals; 6. Power terminals; 7. Touch screen online terminals; 8. Analog input and output terminals; 9. Analog differential input; 10. Screw fixing installation holes; 11. Equipment heat dissipation slot; 12. Guide rail slot; 13. Guide rail fixing assembly; 14. Equipment housing screw fixing holes; 15. Equipment upper cover; 16. Equipment bottom cover; 17. Screw-free plug-in connector wiring hole; 18. Screw-free plug-in connector wire crimping mechanism; 19. Connector plug-in end; 20. Screw plug-in connector wiring harness fixing screw; 21. Screw plug-in connector plug-in end; 22. Connector fixing screw; 23. Connector wiring hole. DETAILED DESCRIPTION

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] Reference Figure 1-4 The utility model provides a multifunctional programmable controller, comprising a device body consisting of a device upper cover 15 and a device bottom cover 16, characterized in that the device upper cover 15 is provided with a device housing screw fixing hole 14 and is connected to the device bottom cover 16 through screws to form a accommodating cavity; a circuit board, an input and output terminal 2, a bus communication terminal 5, a power terminal 6 and an analog input and output terminal 8 are installed in the accommodating cavity, wherein the terminal interfaces of the input and output terminal 2, the bus communication terminal 5, the power terminal 6 and the analog input and output terminal 8 are exposed to the outside; the input and output terminal 2 and the analog input and output terminal 8 are screw-free plug-in terminals; the bus communication terminal 5 and the power terminal 6 are screw plug-in terminals; the bus communication terminal 5 is a MODBUS bus communication terminal.

[0029] As a further preferred embodiment of the present invention, the input and output terminals 2 are installed on the front of the device body, and a guide rail slot 12 is provided on the back of the device body. A detachable guide rail fixing component 13 and a screw fixing mounting hole 10 are provided on the guide rail slot 12; the bus communication terminal 5 and the power terminal 6 are installed on the same side of the device body, and the analog input and output terminal 8 is installed on the other side of the device body; and the top and bottom of the device body are provided with a device heat dissipation slot 11.

[0030] As a further preferred solution of the present invention, a touch screen connection terminal 7 is also installed on one side of the device body, and the touch screen connection terminal 7 and the analog input and output terminal 8 are on the same side.

[0031] As a further preferred embodiment of the present invention, a USB Type C interface terminal 3 and a button-type operating status switching switch 4 are also installed on one side of the device body, and the USB Type C interface terminal 3 and the button-type operating status switching switch 4 are on the same side as the bus communication terminal 5 and the power terminal 6.

[0032] As a further preferred solution of the present invention, an input / output status indicator light panel 1 is also provided on the front of the device body.

[0033] As a further preferred embodiment of the present invention, the screw-free plug-in terminal is arranged to be connected to a screw-free plug-in port, and the screw-free plug-in port is composed of a screw-free plug-in connector wiring hole 17, a screw-free plug-in connector crimping mechanism 18 and a connector plug-in end 19, wherein the connector plug-in end 19 is connected to the screw-free plug-in terminal.

[0034] As a further preferred embodiment of the present invention, the screw plug-in terminal is provided to be connected to a screw plug-in port, and the screw plug-in port is composed of a screw plug-in connector harness fixing screw 20, a screw plug-in connector plug-in end 21, a connector fixing screw 22 and a connector wiring hole 23, wherein the screw plug-in connector plug-in end 21 is connected to the screw plug-in terminal.

[0035] As a specific embodiment of the utility model: the circuit board is installed in the device bottom cover 16 by screw connection, the device upper cover 15 is installed by screws through the device housing screw fixing holes 14, the input and output status indicator panel 1 is glued to the device body by back adhesive, and the guide rail fixing component 13 is inserted from the bottom end of the device body and installed in the guide rail card slot 12 to form a complete device, and the back is installed by 35mm standard DIN guide rail or screw fixing;

[0036] The bus communication terminal 5 and the power terminal 6 are connected to the external device through the terminal connector screw plug-in connector harness fixing screw 20, the screw plug-in connector plug-in terminal 21, and the connector fixing screw 22 to achieve quick installation and removal;

[0037] The input and output terminals 2 and the analog input and output terminals 8 are connected to external devices through the screw-free plug-in connector wiring holes 17, the screw-free plug-in connector crimping mechanism 18, and the connector plug-in terminal 19 to achieve quick installation and removal;

[0038] The computer connects to the device via the USB Type C interface terminal 3 for program download and debugging, which is fast; the device can be switched between the RUN and STOP states through the push-button operation state switch 4; the analog differential input 9 can realize the input of differential signals, effectively suppressing external interference; the touch screen online terminal 7 is specially used for the communication connection between the external touch screen and the device, and can also realize program download and debugging; the device can be quickly installed and disassembled through the guide rail slot 12 and the guide rail fixing component 13, and can also be installed separately through the screw fixing mounting hole 10 with screws to meet different installation requirements, follow the IEC61131-3 standard, and support ladder diagram (LD) and sequential function chart (SFC)

[0039] Two graphical programming languages.

[0040] As needed, the above-mentioned installation, setting, provision or connection methods include but are not limited to installation, setting or connection by screws, riveting, welding or socketing, fixing, etc., and the installation, setting or connection method is selected according to the needs of the working scenario.

[0041] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A multifunctional programmable logic controller, comprising a device body consisting of a device upper cover (15) and a device bottom cover (16), characterized in that: The device upper cover (15) is provided with a device housing screw fixing hole (14) and is connected to the device bottom cover (16) by screws to form a housing cavity; a circuit board, input / output terminals (2), bus communication terminals (5), power terminals (6) and analog input / output terminals (8) are installed in the housing cavity, wherein the terminal interfaces of the input / output terminals (2), bus communication terminals (5), power terminals (6) and analog input / output terminals (8) are exposed to the outside; the input / output terminals (2) and analog input / output terminals (8) are screw-free plug-in terminals; and the bus communication terminals (5) and power terminals (6) are screw-free plug-in terminals.

2. The multifunctional programmable logic controller according to claim 1, characterized in that: The input / output terminals (2) are mounted on the front of the device body, and a guide rail slot (12) is provided on the back of the device body. A detachable guide rail fixing component (13) and a screw fixing mounting hole (10) are provided on the guide rail slot (12); the bus communication terminal (5) and the power supply terminal (6) are mounted on the same side of the device body, and the analog input / output terminal (8) is mounted on the other side of the device body; and the top and bottom of the device body are both provided with device heat dissipation slots (11).

3. The multifunctional programmable logic controller according to claim 2, characterized in that: A touch screen connection terminal (7) is also installed on one side of the device body, and the touch screen connection terminal (7) and the analog input and output terminal (8) are on the same side.

4. The multifunctional programmable logic controller according to claim 2, characterized in that: A USB Type C interface terminal (3) and a push-button operation status switching switch (4) are also installed on one side of the device body; the USB Type C interface terminal (3) and the push-button operation status switching switch (4) are on the same side as the bus communication terminal (5) and the power supply terminal (6).

5. The multifunctional programmable logic controller according to claim 2, characterized in that: An input and output status indicator light panel (1) is also provided on the front of the device body.

6. The multifunctional programmable logic controller according to claim 1, characterized in that: The screw-free pluggable terminal is arranged to be connected to a screw-free pluggable port, and the screw-free pluggable port is composed of a screw-free pluggable connector wiring hole (17), a screw-free pluggable connector wire pressing mechanism (18) and a connector pluggable end (19), wherein the connector pluggable end (19) is connected to the screw-free pluggable terminal.

7. The multifunctional programmable logic controller according to claim 1, characterized in that: The screw plug-in terminal is provided to be connected to a screw plug-in port, and the screw plug-in port is composed of a screw plug-in connector harness fixing screw (20), a screw plug-in connector plug-in end (21), a connector fixing screw (22) and a connector wiring hole (23), wherein the screw plug-in connector plug-in end (21) is connected to the screw plug-in terminal.

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