CN207571553U - A kind of Programmable logical controller subsystem - Google Patents

Abstract

The utility model provides a kind of Programmable logical controller subsystem, it includes the first modular converter, the second modular converter and M universal logic module, each universal logic module is connected by the first CAN bus with the first modular converter, and each universal logic module is connected by the second CAN bus with the second modular converter, wherein, M is natural number.Compared with prior art, Programmable logical controller subsystem in the utility model is communicated by CAN bus and modular converter, since CAN bus communication is faster than the speed of other bus forms transmission data, after data turn NET modules by CAN, computer operation can quickly be sent data to and carry out Centralized Monitoring, there is good interactivity；It is communicated using dual CAN bus, can accomplish the redundancy of data.

Description

A kind of Programmable logical controller subsystem

【Technical field】

The utility model is related to Programmable logical controller technical field, more particularly to a kind of Programmable logical controller subsystem System.

【Background technology】

Programmable logic controller (PLC) (Programmable Logic Controller) is kind exclusively in industrial settings Using and design digital operation electronic system.It uses a kind of programmable memory, and storage inside it is performed and patrolled The instruction of the operations such as operation, sequential control, timing, counting and arithmetical operation is collected, passes through digital or analog input and output To control various types of mechanical equipments or production process.

Existing universal logic module is free of Switching Power Supply, low to the insulation of external power supply can not carry out effectively event Phragma from；The low chip module that can damage in-line power of exterior insulation.Existing universal logic module individual module is adopted Collection point is few, and the capacity of single substation is small, and cost it is expensive/extension is difficult；The modular converter of the prior art can not handle mass data, Expansible receiving module is caused to have quantity limitation.Existing universal logic module is using 485 communications or other buses Formula control (length is less than 1 kilometer), transmission rate is low, can not carry out the quick processing and transmission of big data.It is existing programmable Logic control module is communicated using monobus, the redundancy of no data.The external structure of existing universal logic module is not Facilitate very much the fixation of universal logic module.

Therefore, it is necessary to a kind of improved technical solution is provided to overcome one or more of above problem.

【Utility model content】

The purpose of this utility model is to provide a kind of Programmable logical controller subsystem, message transmission rate is high, can The quantity of the universal logic module of extension is big, and can accomplish the redundancy of data.

To solve the above-mentioned problems, one side according to the present utility model, the utility model provide a kind of may be programmed and patrol Control subsystem is collected, including the first modular converter, the second modular converter and M universal logic module.

Each universal logic module is connected by the first CAN bus with the first modular converter, and each programmable Logic control module is connected by the second CAN bus with the second modular converter, wherein, M is natural number, each programmable logic control Molding block receives multiple current/voltage signals, and the multiple current/voltage signals received are handled, to generate and defeated Go out data-signal；The data-signal is transferred to first modular converter, first modular converter by the first CAN bus By received data-signal by CAN format conversions be NET forms；The data-signal is transferred to by the second CAN bus Received data-signal is NET forms by CAN format conversions by second modular converter, second modular converter.

Further, the universal logic module includes communication module, microprocessor and input/output module, The input/output module includes N number of voltage/current signals interface, is used to receiving or sending voltage/current signals, the N For natural number；The communication module include the first CAN communication module and the second CAN communication module, the microprocessor with input/ Output module, the first CAN communication module are connected with the second CAN communication module, and the input/output module will be received outer Portion's current/voltage signal is supplied to the microprocessor, the microprocessor to received foreign current/voltage signal into The data-signal is respectively supplied to the first CAN communication module and the second CAN communication mould by row processing to form data-signal Block, received data-signal is converted into the data-signal of CAN forms by the first CAN communication module, then passes through first CAN bus is transferred to the first modular converter；Received data-signal is converted into CAN lattice by the second CAN communication module The data-signal of formula, then the second modular converter is transferred to by the second CAN bus.

Further, the universal logic module further includes power module, and the power module includes switch electricity Source, the input terminal of the Switching Power Supply are connected with external power supply, and output terminal is to the device in the universal logic module Power supply, and the Switching Power Supply is low to the insulation of external power supply is isolated, M≤16, the N is equal to 12.

Further, the power module further includes the first variable-voltage power supply and the second variable-voltage power supply, and described first becomes piezoelectricity The input terminal in source is connected with the output terminal of the Switching Power Supply, and the output terminal of first variable-voltage power supply leads to the first CAN The power end of news module is connected, and first variable-voltage power supply is used to carry out transformation to the voltage that its input terminal receives to be become Piezoelectricity pressure, and pass through its output terminal and export the transformation voltage；The input terminal of second variable-voltage power supply and the Switching Power Supply Output terminal is connected, and the output terminal of second variable-voltage power supply is connected with the power end of the second CAN communication module, and described second Variable-voltage power supply is used to carry out transformation to the voltage that its input terminal receives, and to obtain transformation voltage, and passes through its output terminal and exports The transformation voltage.

The further universal logic module includes buckle, is formed in the universal logic module back of the body The groove in face and the container on the outside of the groove, the container is from the one of the universal logic module back side Side extends to the groove, and when the buckle is contained in the container, the foot of the buckle exposes to the groove It is interior, the universal logic module is fixed on the fixing piece of the groove.

Further, the container is included from the lateral groove side at the universal logic module back side To extension first receiving groove portion, from described first receiving groove portion end continue to extend up to the groove direction it is described recessed Second receiving groove portion of slot, the block in the middle part of the container, wherein, it is formed with and leads on the side wall of second container Approaching channel；The buckle include being buckled ontology, positioned at the head on buckle ontology top, positioned at the ontology bottom end that is buckled foot, be located at Be buckled ontology head on both sides shoulder and positioned at the buckle ontology both sides and guidance part between the shoulder and foot； The buckle ontology includes the cavity through the buckle body thickness direction, extended to form from the buckle ontology and be located at Elastic clip and finger portion in the cavity；The buckle is contained in the container, and can fix position reconciliation card position Between move, when the buckle in fix position when, the shoulder of the buckle is contained in the first receiving groove portion and institute The bottom end for stating the shoulder of buckle is butted on the side wall top of the second receiving groove portion；The guidance part is contained in second receiving In the guide channel of groove portion；The opening of the elastic clip is held on the first side of the widest portion of the block, and the finger portion is separate The block；The foot of the buckle is exposed in the groove, so that the universal logic module is fixed on and is located at On the fixing piece 600 of the groove, when the buckle is in solution card position, the shoulders of the buckle exit described the Recess the side wall top of the second receiving groove portion in the bottom end of one receiving groove portion and the shoulder of the buckle；The elastic clip Opening is held on the second side of the widest portion of the block；The finger portion stops close to the block and by the block；Institute The foot for stating buckle is retracted into the second receiving groove portion, so that the universal logic module is detached from positioned at described The fixing piece of groove.When the buckle is moved to by solution card position and fixes position, the opening of the elastic clip is by the gear The second side of the widest portion of block is moved to the first side of the widest portion of the block by the widest portion of the block.

Further, the elastic clip from it is described buckle ontology cavity close buckle head side extend and Into the finger portion extends from the side of the foot of the close buckle of the cavity of the buckle ontology；The block with it is described The adjacent one end in finger portion is formed with recess, and when the buckle is in fixing position, the finger portion is partially housed in the gear The end in the recess of block and the finger portion and the bottom of the recess of the block maintain a certain distance；At the buckle When card position is solved, the end in the finger portion abuts against the bottom of the recess of the block.

Further, the width of the first receiving groove portion is more than the described second receiving well width, the buckle ontology The thickness of shoulder is more than the thickness of the guide portion；It is located at the side of the groove on the back side of universal logic module, The container described in several is formed with, universal logic module is further included patrols from the programmable of opposite side of the groove The back portion of volume control module extends to several spaced cards above groove, by the card will described in can Programmed logic control module is affiliated on the fixing piece of the groove, and the buckle, which further includes, is formed in the buckle back side Conduit, the back side of the buckle is close to the end face of the receiving trench bottom, and the conduit is located at the cavity of the buckle ontology Between the foot of buckle, when the buckle is inserted into or detaches the container, the block passes through the conduit.

Compared with prior art, the Programmable logical controller subsystem in the utility model passes through CAN bus and modulus of conversion Block (i.e. CAN turns NET modules) communicates, and since CAN bus communication is faster than the speed of other bus forms transmission data, data pass through After CAN turns NET modules, it can quickly send data to computer operation and carry out Centralized Monitoring, there is good interactivity；Using Dual CAN bus communicates, and can accomplish the redundancy of data.

【Description of the drawings】

It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings Obtain other attached drawings.Wherein：

Fig. 1 is the structure diagram of the programmable logic control system of the utility model in one embodiment；

Fig. 2 is the circuit diagram of a universal logic module in one embodiment in Fig. 1；

Fig. 3 is the vertical view of universal logic module shown in Fig. 2 in one embodiment；

Fig. 4 is the recognition methods of the failure universal logic module in programmable logic control system shown in FIG. 1 Flow diagram；

Fig. 5 is the explosive view of the backside structure of the universal logic module of the utility model in one embodiment；

Fig. 6 is structure diagram of the universal logic module shown in fig. 5 when buckle is in fixing position；

Fig. 7 is structure diagram of the universal logic module shown in fig. 5 when buckle is in solution card position；

Fig. 8 is the structure diagram of the back side of buckle shown in FIG. 1 in one embodiment；

Fig. 9 is the structure schematic diagram that multiple universal logic modules are equipped on a fixing piece；

Figure 10 is the structure diagram of the Programmable logical controller frame of the utility model in one embodiment.

【Specific embodiment】

Above-mentioned purpose, feature and advantage to enable the utility model are more obvious understandable, below in conjunction with the accompanying drawings and have Body embodiment is described in further detail the utility model.

" one embodiment " or " embodiment " referred to herein refers to may be included at least one realization side of the utility model A particular feature, structure, or characteristic in formula." in one embodiment " that different places occur in the present specification not refers both to Same embodiment, nor the individual or selective embodiment mutually exclusive with other embodiment.Unless stated otherwise, The word that the expression connect, be connected, connecting herein is electrically connected represents directly or indirectly to be electrical connected.

(1) using the programmable logic control system and Programmable logical controller subsystem of dual CAN bus communication

It is the structure of the programmable logic control system of the utility model in one embodiment shown in please referring to Fig.1 Schematic diagram.Programmable logic control system shown in FIG. 1 includes first work station 110 (being abbreviated as 1# work stations), the second work It stands 120 (being abbreviated as 2# work stations) and multiple Programmable logical controller subsystems (not marking).

Each Programmable logical controller subsystem include the first modular converter 122 (i.e. CAN turns NET modules 122), second turn Change the mold block 124 (i.e. CAN turns NET modules 124) and M universal logic module 130, M is natural number, and M≤16.First 122 and second modular converter 124 of modular converter is that CAN (Controller Area Network, controller local area network) turns NET (Ethernet, Ethernet) module.Any one Programmable logical controller mould in each Programmable logical controller subsystem Block 130 turns NET modules 122 with CAN by the first CAN bus (CNABUS1) and is connected, and CAN turns NET modules 122 and passes through Ethernet It is connected through the first interchanger 142 with first work station 110；Any one universal logic module 130 is total by the 2nd CAN Line (CNABUS2) turns NET modules 124 with CAN and is connected, and CAN turns NET modules 124 by Ethernet through second switch 144 and Two work stations 120 are connected.

Each universal logic module 130 receives multiple current/voltage signals, and multiple electric currents to receiving/ Voltage signal is handled, to generate simultaneously outputting data signals.The data-signal is transferred to CAN by the first CAN bus and turns NET modules 122, CAN turn NET modules 122 by received data-signal by CAN format conversions be NET forms, NET forms Data-signal first work station 110 is transferred to by Ethernet again；The data-signal is transferred to by the second CAN bus CAN turns NET modules 124, and it is NET lattice by CAN format conversions that the CAN, which turns NET modules 124 by received data-signal, Formula, the data-signal of NET forms are transferred to second work station 120 by Ethernet again.

In the utility model, (the first CAN bus, the 2nd CAN are total by CAN bus for universal logic module 130 Line) it is communicated with modular converter (CAN turns NET modules 122, CAN turns NET modules 124), since CAN bus is communicated than other buses The speed of form transmission data is fast, after data turn NET modules 122,124 by CAN, can quickly send data to computer work Make carry out Centralized Monitoring (modular converter connects interchanger by Ethernet), there is good interactivity；Led to using dual CAN bus News, accomplish the redundancy of data, and dual CAN bus communication can turn NET modules respectively into the first computer by different CAN respectively Work station 110 and second computer work station 120 can carry out redundancy monitoring, the first computer work to access point respectively in this way Effective redundancy can also be done by making station 110 and second computer work station 120, realize safest monitoring.

The utility model uses modularized design circuit, and single universal logic module 130 (is specifically seen below Description to Fig. 2) 12 current or voltage signals can be received, utilize the microprocessor of itself of universal logic module 130 Data are transmitted, while a substation (subsystem) can accommodate 16 pieces by dual CAN bus (i.e. the CAN bus of redundancy) Such universal logic module 130, such a substation can have 192 point accesses, this 192 points are turned by CAN NET modules 122,124 convert after to computer workstation Centralized Monitoring, turning NET modules by extending n CAN can have the n a 192 points of inputs, system can reception capacity can be gone down by this extended mode infinite expanding, n here can be more than 2 Natural number.

(2) internal structure of universal logic module

Shown in please referring to Fig.2, show for the circuit of a universal logic module in Fig. 1 in one embodiment It is intended to.Universal logic module shown in Fig. 2 includes input/output module 210, communication module (not marking) and microprocessor Device (CPU, also referred to as central processing unit).

The input/output module 210 include N number of current/voltage signaling interface IN, be used to receive or send electric current/ Voltage signal, the N is natural number, and in specific embodiment shown in Fig. 2, the input/output module 210 includes 12 electricity Stream/voltage signal interface IN, and it receives 0~10V of ranging from 4~20mA or of current/voltage signal.The communication module Including the first CAN communication module 222, the second CAN communication module 224, the microprocessor and input/output module 210, first CAN communication module 222 is connected with the second CAN communication module 224.

Received foreign current/voltage signal is supplied to the microprocessor by the input/output module 210, The microprocessor handles received foreign current/voltage signal to form data-signal, and by the data Signal is respectively supplied to the first CAN communication module 222 and the second CAN communication module 224.The first CAN communication module 222 will Received data-signal is converted into the data-signal of CAN forms, then the number of the CAN forms is transmitted by the first CAN bus It is believed that number give the first modular converter 122；Received data-signal is converted into CAN lattice by the second CAN communication module 224 The data-signal of formula, then the data-signal of the CAN forms is transmitted to the second modular converter 124 by the second CAN bus.In this way, Universal logic module shown in Fig. 2 can be realized double between the first modular converter 122 and the second modular converter 124 CAN bus communicates.

In specific embodiment shown in Fig. 2, the first CAN communication module 222 includes the first communication input interface 1# The communication output interface 1#CAN OUT of CAN IN and first, and the first communication input interface 1#CAN IN and the second communication output connect Mouth 1#CAN OUT are connected by the first CAN bus with the first modular converter 122；The second CAN communication module 224 includes the Two communication input interface 2#CAN IN and the second communication output interface 2#CAN OUT, and the second communication input interface 2#CAN IN It is connected with the second communication output interface 2#CAN OUT by the first CAN bus with the second modular converter 124.

Please continue to refer to shown in Fig. 2, universal logic module shown in Fig. 2 further includes the power module and (does not mark Note), the power module includes Switching Power Supply 232, and the input terminal of the Switching Power Supply 232 is connected with external power supply, exports It holds and powers to the device in the universal logic module, and the progress low to the insulation of external power supply of the Switching Power Supply 232 Isolation, so as to carry out transformation with a Switching Power Supply to reach the low effective Fault Isolation of progress of insulation to external power supply.One In a embodiment, the Switching Power Supply 232 by controlling the turn-on and turn-off of switching tube, to the voltage that its input terminal receives into Row transformation, to pass through the stable output voltage of its output terminal output.

Please continue to refer to shown in Fig. 2, the power module in universal logic module shown in Fig. 2 further includes One variable-voltage power supply 234 and the second variable-voltage power supply 236.

The input terminal of first variable-voltage power supply 234 is connected with the output terminal of the Switching Power Supply 232, first transformation The output terminal of power supply 234 is connected with the power end of the first CAN communication module 222, first variable-voltage power supply 234 for pair The voltage that its input terminal receives carries out transformation, to obtain transformation voltage, and passes through its output terminal and exports the transformation voltage.It is described The input terminal of second variable-voltage power supply 236 is connected with the output terminal of the Switching Power Supply 232, second variable-voltage power supply 236 it is defeated Outlet is connected with the power end of the second CAN communication module 224, and second variable-voltage power supply 236 is used to input it termination The voltage received carries out transformation, to obtain transformation voltage, and passes through its output terminal and exports the transformation voltage.

Wherein, existing power supply electricity may be used in Switching Power Supply 232, the first variable-voltage power supply 234 and the second variable-voltage power supply 236 Road and the technology of transforming circuit, therefore details are not described herein.

In a specific embodiment, the external power supply is the DC power supply of 24V；The Switching Power Supply 232 is 24V Turn the Switching Power Supply of 3V；First variable-voltage power supply, 234 and second variable-voltage power supply 236 turns the variable-voltage power supply of 5V for 3V.

(3) indicating lamp structure of universal logic module

Shown in please referring to Fig.2, which show the inside of the indicator light of the universal logic module in the utility model Structure, please refer to Fig.3 shown in, be the vertical view of universal logic module shown in Fig. 2 in one embodiment, show The external structure of the indicator light of universal logic module is shown.

With reference to shown in Fig. 2 and Fig. 3, the indicator light of the universal logic module in the utility model includes first and shines Diode D1, the second light emitting diode D2, third light emitting diode D3, the 4th light emitting diode D4 and the 5th light emitting diode D5 and 2N light emitting diode corresponding with N number of current/voltage signaling interface of the input/output module 210.

Wherein, the first CAN communication module 222 and the first light emitting diode D1 (Tx represents hair data) and second shine Diode D2 (Rx represents to receive data) is connected, and the first light emitting diode D1 is used to show that the first CAN communication module 222 is sent out Send data whether faulty；Second light emitting diode D2 receives whether data have for showing the first CAN communication module 222 Failure.Similarly, the second CAN communication module 224 and third light emitting diode D3 (Tx) and the 4th light emitting diode D4 (Rx) It is connected, third light emitting diode D3 is used to show whether 224 transmission data of the second CAN communication module is faulty；4th hair Whether optical diode D4 is faulty for showing the reception of the second CAN communication module 224 data.In one embodiment, institute The first light emitting diode D1 to the 4th light emitting diode D4 is stated by whether flickering to show that corresponding CAN communication module receives number According to or receive whether data faulty, for example, when the first light emitting diode D1 flicker, the first CAN communication module 222 of expression has Data are sent, and when the first light emitting diode D1 does not flicker, represent that 222 transmission data of the first CAN communication module is faulty；When When two light emitting diode D2 flicker, represent that the first CAN communication module 222 has data receiver, when the second light emitting diode D2 does not dodge When bright, it is faulty to represent that the first CAN communication module 222 receives data.

The microprocessor is connected with the 5th light emitting diode D5, and the 5th light emitting diode D5 is used to show microprocessor Whether device works normally.In one embodiment, the 5th light emitting diode D5 passes through bright or go out and be come display microprocessor No normal work, for example, when the microprocessor works normally, the 5th light emitting diode D5 is always on, when the microprocessor During failure, the 5th light emitting diode D5 often goes out；For another example, when the microprocessor works normally, the 5th light-emitting diodes Pipe D5 often goes out, and when the microprocessor breaks down, the 5th light emitting diode D5 is always on.

Each current/voltage signaling interface of the input/output module 210 passes through two light emitting diodes and microprocessor Device is connected, and described two light emitting diodes are respectively used to show the transmission signal of the current/voltage signaling interface and receive signal It is whether normal.For example, the interface of a current/voltage signal in the left side of the input/output module 210 includes 1 He of pin 2, wherein pin 2 passes sequentially through light emitting diode D6, resistance R1 and optocoupler 1 and is connected with microprocessor；The input/output module The interface of one current/voltage signal on 210 right side include pin 1 and 2, wherein pin 2 pass sequentially through light emitting diode D7, Resistance R2 and optocoupler 2 are connected with microprocessor.

(4) in programmable logic control system failure universal logic module recognition methods

It is the failure Programmable logical controller mould in programmable logic control system shown in FIG. 1 shown in please referring to Fig.4 The flow diagram of the recognition methods of block.Below in conjunction with Fig. 1, failure universal logic module shown in Fig. 4 is specifically introduced Recognition methods.

Step 410, modular converter 122,124 gives its corresponding universal logic module with predetermined period of time 130 send random heartbeat signal；

Step 420, the corresponding universal logic module 130 receives the modular converter 122,124 and sends out Heartbeat signal after, send the data-signal of specified format to the modular converter 122,124, the data-signal includes address The heartbeat signal that signal, current/voltage signal and the corresponding universal logic module 130 receive, wherein, it is described Current/voltage signal is the external signal that the corresponding universal logic module receives；Described address signal is institute State the signal (similar gateway 1-255) obtained after the microprocessor in corresponding universal logic module detects self. In one specific embodiment, the universal logic module 130 converts the current/voltage signal of the outside received Into the identifiable digital signal of computer, then again by the digital signal, address signal and corresponding Programmable logical controller mould The heartbeat signal that block 130 receives is integrated into the data-signal of specified format, then again by CAN bus bus transfer to correspondence The modular converter 122,124.

Step 430, the modular converter 122,124 receives the number that corresponding universal logic module 130 is sent It is believed that number after, whether the heartbeat signal detected in the data-signal received correct.

Step 440, if the modular converter 122,124 detects the heartbeat signal disappearance or wrong returned with data-signal Accidentally, then judge that there may be failures for corresponding universal logic module 130.

To sum up shown, the recognition methods of the failure universal logic module in the utility model can be patrolled programmable The universal logic module collected in control system is monitored, and can be quickly found out out of order Programmable logical controller mould Block.

(5) external structure of universal logic module

In order to facilitate the fixation of universal logic module, the utility model is to the outside of universal logic module Structure is improved.

It please refers to shown in Fig. 5, is the back side of the universal logic module of the utility model in one embodiment The explosive view of structure；It please refers to shown in Fig. 6, is that universal logic module shown in fig. 5 is in fixing position in buckle When structure diagram；It please refers to shown in Fig. 7, is that universal logic module shown in fig. 5 is in solution screens in buckle Structure diagram when putting.

Universal logic module 500 shown in Fig. 5-7 includes buckle 520, is formed in the Programmable logical controller The groove 510 at 500 back side of module and the container 530 positioned at 510 outside of groove, the container 530 can be compiled described in The side at the journey Logic control module back side extends to the groove 510.When the buckle 520 is contained in the container 530 When, the foot 521 of the buckle 520 is exposed in the groove 510, and the universal logic module 500 is fixed In on the fixing piece 600 at the groove 510.

In specific embodiment shown in Fig. 5-7, the container 530 is included from the universal logic module 500 First receiving groove portion 532 of lateral 510 direction of the groove extension of the one of the back side, the end for accommodating groove portion 532 from described first Continue to extend up to the second receiving groove portion 534 of the groove 510, in the container 530 to 510 direction of groove The block 536 in portion, wherein, second container is formed with guide channel 5342 on 534 side wall；The buckle 520 includes card Detain ontology 525, positioned at the head 522 on buckle ontology 525 top, positioned at the foot 521 of 525 bottom end of buckle ontology, positioned at buckle The shoulder 523 of 522 both sides of head of ontology 525 and positioned at buckle 525 both sides of ontology and positioned at the shoulder 523 and foot Guidance part 524 between 521；It is described buckle ontology 525 include through it is described buckle 525 thickness direction of ontology cavity 5252, Extended to form from the buckle ontology 525 and elastic clip 5256 in the cavity 5252 and finger portion 5254；The card Button 520 can be contained in the container 530, and can be moved between position reconciliation card position is fixed.

(Fig. 6 is specifically referred to when the buckle 520 is in fixing position), and the shoulder 523 of the buckle 520 is contained in In the first receiving groove portion 532 and bottom end of the shoulder 523 of the buckle 520 is butted on the side of the second receiving groove portion 534 Wall top；The guidance part 524 is contained in the guide channel 5342 of the second receiving groove portion 534；The elastic clip 5256 Opening is held on the first side of the widest portion of the block 536, and the finger portion 5254 is far from the block 536；The buckle 520 foot 521 is exposed in the groove 510, so that the universal logic module 500 is fixed on positioned at described recessed On fixing piece 600 at slot 510.

(Fig. 7 is specifically referred to when the buckle 520 is in solution card position), and the shoulders 523 of the buckle 520 move back Recess the described second side for accommodating groove portion 534 in the bottom end for going out the first receiving groove portion 532 and the shoulder 523 of the buckle 520 Wall top；The opening of the elastic clip 5256 is held on the second side of the widest portion of the block；The finger portion 5254 is close The block 536 is simultaneously stopped by the block 536；The foot of the buckle 520 is retracted into the second receiving groove portion 534, with So that the universal logic module 500 is detached from the fixing piece 600 at the groove 510.In the buckle 520 Be moved to by solution card position when fixing position, the opening of the elastic clip 5256 by the block 536 widest portion second Side is moved to the first side of the widest portion of the block 536 by the widest portion of the block 536.

In the specific embodiment shown in Fig. 5-7, the elastic clip 5256 is from the cavity 5252 of the buckle ontology 525 Extend close to the side on head 522 of buckle 520, the finger portion 5254 is from the cavity 5252 of the buckle ontology 525 Extend close to the side of the foot 521 of buckle 520；The block 536 one end adjacent with the finger portion 5254 is formed with Recess 5362, when the buckle 520 is in fixing position, the finger portion 5254 is partially housed in the recessed of the block 536 In the mouth 5362 and end in the finger portions 5254 and the bottom of the recess 5362 of the block 536 maintain a certain distance；When When the buckle 520 is in solution card position, the end in the finger portion 5254 abuts against the bottom of the recess 5362 of the block 536 Portion.

In the specific embodiment shown in Fig. 5-7, the width of the first receiving groove portion 532 is more than second container 534 width of portion, the thickness of the shoulder 523 of the buckle ontology 525 are more than the thickness of the guide portion 524；Programmable logic control It is located at the side of the groove 510 on the back side of molding block 500, is formed with the container 530 described in several, programmable logic The back portion that control module 500 further includes the universal logic module 500 of the opposite side from the groove 510 extends to Several spaced cards 540 of 510 top of groove, can be first by the Programmable logical controller by the card 540 Module 500 is affiliated on the fixing piece 600 at the groove 510, then again by buckle 520 by the Programmable logical controller Module 500 is fixed on the fixing piece 600 at the groove 510.

The head 522 of the buckle ontology 525 can be used as push-and-pull portion, by the head for pushing and pulling the buckle ontology 525 Portion 522 is so that the buckle 520 moves between conciliating card position in the fixing position of the container 530.The buckle ontology 525 head 522 is formed through the through-hole 5222 of 522 thickness direction of head, can be auxiliary in the interior insertion of through-hole 5222 at this Assistant engineer has, the buckle 520 to be driven to be moved between conciliating card position in the fixing position of the container 530.

It please refers to shown in Fig. 8, is the structure diagram of the back side of buckle shown in FIG. 1 in one embodiment, it is shown Buckle 520 further include the conduit 550 for being formed in 520 back sides of the buckle, the back side of the buckle 520 is close to the receiving The end face of 530 bottom of slot, the conduit 550 be located at it is described buckle ontology 525 cavity 5252 and buckle 520 foot 521 it Between, when the buckle 520 is inserted into or detaches the container 530, the block 536 passes through the conduit 550.

It please refers to Fig.1 shown in 0, the structure for the Programmable logical controller frame of the utility model in one embodiment is shown It is intended to.Programmable logical controller frame shown in Fig. 10 include installing plate 700, multiple fixing pieces 600 and it is multiple as illustrated in figs. 5-7 Universal logic module 500.

Wherein, multiple fixing pieces 600 are sequentially fixed on the end face of the installing plate 700, wherein on each fixing piece 600 It is all fixed with multiple universal logic modules 500 successively.It please refers to described in Fig. 9, is a fixing piece 600 in Figure 10 On the structure schematic diagrams of multiple universal logic modules 500 is installed.In Fig. 5 and embodiment shown in Fig. 10, The fixing piece 600 is strip board.

It should be pointed out that one skilled in the art specific embodiment of the present utility model is done it is any Change the range of claims all without departing from the utility model.Correspondingly, the scope of the claims of the utility model It is not limited only to previous embodiment.

Claims (8)

1. a kind of Programmable logical controller subsystem, which is characterized in that it includes the first modular converter, the second modular converter and M A universal logic module,

Each universal logic module is connected, and each programmable logic by the first CAN bus with the first modular converter Control module is connected by the second CAN bus with the second modular converter, wherein, M is natural number,

Each universal logic module receives multiple current/voltage signals, and multiple current/voltage signals to receiving It is handled, to generate simultaneously outputting data signals；The data-signal is transferred to first modulus of conversion by the first CAN bus Received data-signal is NET forms by CAN format conversions by block, first modular converter；The data-signal leads to It crosses the second CAN bus and is transferred to second modular converter, second modular converter is by received data-signal by CAN Format conversion is NET forms.

2. Programmable logical controller subsystem according to claim 1, which is characterized in that the Programmable logical controller mould Block includes communication module, microprocessor and input/output module,

The input/output module includes N number of voltage/current signals interface, is used to receiving or sending voltage/current signals, The N is natural number；

The communication module includes the first CAN communication module and the second CAN communication module, the microprocessor and input/output Module, the first CAN communication module are connected with the second CAN communication module,

Received foreign current/voltage signal is supplied to the microprocessor, micro- place by the input/output module Reason device is handled received foreign current/voltage signal to form data-signal, and the data-signal is distinguished The first CAN communication module and the second CAN communication module are supplied to, the first CAN communication module believes received data Number the data-signal of CAN forms is converted into, then the first modular converter is transferred to by the first CAN bus；Second CAN communication Received data-signal is converted into the data-signal of CAN forms by module, then is transferred to second turn by the second CAN bus Change the mold block.

3. Programmable logical controller subsystem according to claim 2, which is characterized in that the Programmable logical controller mould Block further includes power module, and the power module includes Switching Power Supply, and the input terminal of the Switching Power Supply is connected with external power supply, Its output terminal to the device power supply in the universal logic module, and the Switching Power Supply it is low to the insulation of external power supply into Row isolation,

M≤16, the N are equal to 12.

4. Programmable logical controller subsystem according to claim 3, which is characterized in that the power module further includes One variable-voltage power supply and the second variable-voltage power supply,

The input terminal of first variable-voltage power supply is connected with the output terminal of the Switching Power Supply, the output of first variable-voltage power supply End is connected with the power end of the first CAN communication module, and first variable-voltage power supply is used for the electricity received to its input terminal Pressure carries out transformation to obtain transformation voltage, and passes through its output terminal and export the transformation voltage；

The input terminal of second variable-voltage power supply is connected with the output terminal of the Switching Power Supply, the output of second variable-voltage power supply End is connected with the power end of the second CAN communication module, and second variable-voltage power supply is used for the electricity received to its input terminal Pressure carries out transformation, to obtain transformation voltage, and passes through its output terminal and exports the transformation voltage.

5. Programmable logical controller subsystem according to claim 1, which is characterized in that

The universal logic module includes buckle, the groove and the position that are formed in the universal logic module back side Container on the outside of the groove, the container extend to described from the side at the universal logic module back side Groove,

When the buckle is contained in the container, the foot of the buckle is exposed in the groove, can by described in Programmed logic control module is fixed on the fixing piece of the groove.

6. Programmable logical controller subsystem according to claim 5, which is characterized in that

The container includes first of the lateral groove direction extension from the universal logic module back side Receiving groove portion continues to extend up to the second receiving of the groove to the groove direction from the end of the described first receiving groove portion Groove portion, the block in the middle part of the container, wherein, it is formed with guide channel on the side wall of second container；

The buckle include being buckled ontology, positioned at the head on buckle ontology top, positioned at the foot for the ontology bottom end that is buckled, positioned at card Detain the shoulder of the head on both sides of ontology and positioned at buckle ontology both sides and the guidance part between the shoulder and foot；Institute State buckle ontology include the cavity through the buckle body thickness direction, extended to form from the buckle ontology and positioned at institute State the elastic clip in cavity and finger portion；

The buckle is contained in the container, and can be moved between position reconciliation card position is fixed,

When the buckle is in fixing position, the shoulder of the buckle is contained in the first receiving groove portion and the card The bottom end of the shoulder of button is butted on the side wall top of the second receiving groove portion；The guidance part is contained in the second receiving groove portion Guide channel in；The opening of the elastic clip is held on the first side of the widest portion of the block, and the finger portion is far from described Block；The foot of the buckle is exposed in the groove, so that the universal logic module is fixed on positioned at described On the fixing piece 600 of groove,

When the buckle is in solution card position, the shoulders of the buckle exit the first receiving groove portion and the card Recess the side wall top of the second receiving groove portion in the bottom end of the shoulder of button；The opening of the elastic clip is held on the block The second side of widest portion；The finger portion stops close to the block and by the block；The foot of the buckle is retracted into described In second receiving groove portion, so that the universal logic module is detached from the fixing piece positioned at the groove,

When the buckle is moved to by solution card position and fixes position, the opening of the elastic clip by the block widest portion The second side by the block widest portion be moved to the block widest portion the first side.

7. Programmable logical controller subsystem according to claim 6, which is characterized in that

The elastic clip extends from the side on head of the close buckle of the cavity of the buckle ontology, and the finger portion is from institute The side for stating the foot of the close buckle of the cavity of buckle ontology extends；

Block one end adjacent with the finger portion is formed with recess, when the buckle is in fixing position, the finger portion The recess for being partially housed in the block and the recess of the end and block in the finger portion bottom maintain it is certain Distance；When the buckle is in solution card position, the end in the finger portion abuts against the bottom of the recess of the block.

8. Programmable logical controller subsystem according to claim 7, which is characterized in that

The width of the first receiving groove portion is more than the described second receiving well width, and the thickness of the shoulder of the buckle ontology is more than The thickness of the guidance part；

It is located at the side of the groove on the back side of universal logic module, is formed with the container described in several, it can The back portion that programmed logic control module further includes the universal logic module of the opposite side from the groove extends to The universal logic module is affiliated in described by several spaced cards above groove by the card On the fixing piece of groove,

The buckle further includes the conduit for being formed in the buckle back side, and the back side of the buckle is close to the receiving trench bottom End face, the conduit is located between the cavity of the buckle ontology and the foot of buckle, is inserted into the buckle or detaches institute When stating container, the block passes through the conduit.