CN107807629A - The recognition methods of failure universal logic module in programmable control system - Google Patents
The recognition methods of failure universal logic module in programmable control system Download PDFInfo
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- CN107807629A CN107807629A CN201711092032.9A CN201711092032A CN107807629A CN 107807629 A CN107807629 A CN 107807629A CN 201711092032 A CN201711092032 A CN 201711092032A CN 107807629 A CN107807629 A CN 107807629A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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Abstract
The present invention provides a kind of recognition methods of failure universal logic module in programmable control system, and it includes：Modular converter gives its corresponding universal logic module with predetermined period of time and sends random heartbeat signal；After corresponding universal logic module receives the heartbeat signal that the modular converter is sent, the data-signal of specified format is sent to the modular converter, after the modular converter receives the data-signal that corresponding universal logic module is sent, whether the heartbeat signal detected in the data-signal received is correct；If the modular converter detects that the heartbeat signal returned with data-signal disappears or mistake, universal logic module corresponding to judgement there may be failure.Compared with prior art, the present invention can be monitored to out of order universal logic module in bus, and be quickly found out malfunctioning module.
Description
【Technical field】
The present invention relates to Programmable logical controller technical field, failure in more particularly to a kind of programmable logic control system
The recognition methods of universal logic module.
【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, performs and patrols in its storage inside
The instruction of the operations such as computing, sequential control, timing, counting and arithmetical operation is collected, passes through digital or analog input and output
To control various types of plant equipment or production process.
Existing universal logic module is free of Switching Power Supply, and the low progress of insulation that can not be to external power supply is effectively former
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.Existing universal logic module is transmitted to calculating
After machine work, the malfunctioning module in bus can not be monitored, malfunctioning module can not be quickly found out.
Therefore, it is necessary to a kind of improved technical scheme is provided to overcome one or more of above mentioned problem.
【The content of the invention】
It is an object of the invention to provide failure universal logic module in a kind of programmable logic control system
Recognition methods, it can be monitored to out of order universal logic module in bus, and be quickly found out malfunctioning module.
In order to solve the above problems, the present invention provides failure universal logic module in a kind of programmable control system
Recognition methods, it includes：Modular converter with predetermined period of time give its corresponding universal logic module send with
Machine heartbeat signal；After universal logic module corresponding to described receives the heartbeat signal that the modular converter is sent, hair
Send the data-signal of specified format includes address signal, current/voltage signal and institute to the modular converter, the data-signal
The heartbeat signal that universal logic module corresponding to stating receives, wherein, the current/voltage signal is described corresponding
The external signal that universal logic module receives；The address signal is the corresponding universal logic module
In microprocessor self detection after obtained signal, the modular converter receive corresponding to universal logic module hair
After the data-signal sent, whether the heartbeat signal detected in the data-signal received is correct；If the modular converter detects
The heartbeat signal returned with data-signal disappears or mistake, then universal logic module corresponding to judgement there may be event
Barrier.
Further, the programmable control system includes first work station, second work station and multiple FPGAs
Control subsystem, each Programmable logical controller subsystem include individual may be programmed of the first modular converter, the second modular converter and M and patrolled
Control module is collected, each universal logic module is connected by CAN with the first modular converter, first modulus of conversion
Block is connected by Ethernet with first work station；Each universal logic module passes through CAN and the second modular converter
It is connected, second modular converter is connected by Ethernet with second work station, wherein, M is natural number, each FPGA
Control module receives multiple current/voltage signals, and multiple current/voltage signals to receiving are handled, to produce simultaneously
Outputting data signals；The data-signal is transferred to first modular converter, first modulus of conversion by the first CAN
The data-signal that block is received is converted to NET forms by CAN forms, and the data-signal of the NET forms passes through Ethernet again
It is transferred to first work station；The data-signal is transferred to second modular converter by the second CAN, described second turn
The data-signal that is received of mold changing block is converted to NET forms by CAN forms, the data-signals of the NET forms again by with
Too net is transferred to second work station.
Further, universal logic module communication module, microprocessor and the input/output module, it is described
Input/output module includes N number of voltage/current signals interface, and it is used to receive or sends external voltage/current signal, the N
For natural number；The communication module includes the first CAN communication module and the second CAN communication module, and the microprocessor and input/
Output module, the first CAN communication module are connected with the second CAN communication module, and the input/output module is received outer
Portion's current/voltage signal is supplied to the microprocessor, and foreign current/voltage signal that the microprocessor receives to it enters
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, the data-signal that the first CAN communication module is received is converted into the data-signal of CAN forms, then passes through first
CAN is transferred to the first modular converter；The data-signal that the second CAN communication module is received is converted into CAN lattice
The data-signal of formula, then the second modular converter is transferred to by the second CAN.
Further, the universal logic module also includes power module, and the power module includes switch electricity
Source, the input of the Switching Power Supply are connected with external power supply, and its output end is to the device in the universal logic module
Power supply, and insulation of the Switching Power Supply to external power supply is low isolates, M≤16, the N is equal to 12.
Further, the universal logic module includes buckle, is formed at the universal logic module
The groove at the back side and the accepting groove on the outside of the groove, the accepting groove is from the universal logic module back side
Side extends to the groove, and when the buckle is contained in the accepting groove, the foot of the buckle exposes to described recessed
In groove, the universal logic module is fixed on the fixture of the groove.
Further, the accepting groove is included from the lateral groove side at the universal logic module back side
The first collecting groove portion to extension, from the end of the described first collecting groove portion continue to extend up to the groove direction it is described recessed
The second of groove houses groove portion, the block in the middle part of the accepting groove, wherein, formed with leading in the side wall of second accepting groove
Approaching channel；The buckle include buckle body, positioned at the head on buckle body top, the foot positioned at buckle body bottom, be located at
The shoulder of the head on both sides of buckle body and positioned at buckle body both sides and the guidance part between the shoulder and foot；
The buckle body includes the cavity through the buckle body thickness direction, extends being formed from the buckle body and be located at
Elastic clip and finger portion in the cavity；The buckle is contained in the accepting groove, and can conciliate card position fixing position
Between move, when the buckle, which is in, fixes position, the shoulder of the buckle is contained in described first and housed in groove portion and institute
The bottom for stating the shoulder of buckle is butted on the described second side wall top for housing groove portion；The guidance part is contained in described second and housed
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 remote
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 fixture 600 of the groove, when the buckle is in solution card position, the shoulders of the buckle exit described the
Recess the described second side wall top for housing groove portion in the bottom of one collecting 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 collecting groove portion, to cause the universal logic module to depart from positioned at described
The fixture 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
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 the extension of the side on the head of the close buckle of the cavity of the buckle body and
Into from the side of the foot of the close buckle of the cavity of the buckle body, extension forms in the finger portion；The block with it is described
The adjacent one end in finger portion is formed with recess, and when the buckle, which is in, fixes position, the finger portion is partially housed in the gear
The end in the recess 5362 of block and the finger portion and the bottom of the recess of the block maintain a certain distance；When the card
For buckle when card position is solved, the end in the finger portion 5254 abuts against the bottom of the recess of the block.
Further, the described first width for housing groove portion is more than the described second collecting well width, the buckle body
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,
Formed with the accepting groove described in several, universal logic module also includes patrolling from the programmable of opposite side of the groove
Several spaced cards that the back portion of control module is extended to above groove are collected, can by described in by the card
Programmed logic control module is affiliated on the fixture of the groove, and the buckle also includes being formed at the buckle back side
Conduit, the back side of the buckle are to be located at the cavity of the buckle body close to the end face of the collecting trench bottom, the conduit
Between the foot of buckle, when the buckle inserts or detaches the accepting groove, the block passes through the conduit.
Compared with prior art, the modular converter in the present invention sends heartbeat letter with fixed time period to receiving module
Number, after universal logic module receives the heartbeat signal that modular converter is sent at random, believe together with normal current voltage
Number and heartbeat signal, transmit together to modular converter, whether modular converter detection heartbeat signal correct, if heartbeat signal
Mistake, then judge that the corresponding receiving module may break down.So, can of the present invention is compiled to out of order in bus
Journey Logic control module is monitored, and is quickly found out malfunctioning module.
【Brief description of the drawings】
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without having to pay creative labor, it can also be obtained according to these accompanying drawings other
Accompanying drawing.Wherein：
Fig. 1 is the structural representation of the programmable logic control system of the present invention in one embodiment；
Fig. 2 is the circuit diagram of a universal logic module in one embodiment in Fig. 1；
Fig. 3 is the top view of universal logic module in one embodiment shown in Fig. 2；
Fig. 4 is the recognition methods of the failure universal logic module in the programmable logic control system shown in Fig. 1
Schematic flow sheet；
Fig. 5 is the explosive view of the backside structure of the universal logic module of the present invention in one embodiment；
Fig. 6 is that the universal logic module shown in Fig. 5 is in structural representation when fixing position in buckle；
Fig. 7 is structural representation of the universal logic module when buckle is in solution card position shown in Fig. 5；
Fig. 8 is the structural representation of the back side of the buckle shown in Fig. 1 in one embodiment；
Fig. 9 is the backside structure signal that multiple universal logic modules are provided with a fixture in Figure 10
Figure；
Figure 10 is the structural representation of the Programmable logical controller frame of the present invention in one embodiment.
【Embodiment】
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
" one embodiment " or " embodiment " referred to herein refers to may be included at least one implementation of the present invention
Special characteristic, structure or characteristic." in one embodiment " that different places occur in this manual not refers both to same
Individual embodiment, nor the single or selective embodiment mutually exclusive with other embodiment.Unless stated otherwise, herein
In connect, be connected, connecting expression be electrically connected with word represent 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 refer to shown in Fig. 1, the structural representation of its programmable logic control system for the present invention in one embodiment
Figure.Programmable logic control system shown in Fig. 1 includes first work station 110 (being abbreviated as 1# work stations), second work station 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
The modular converter 124 of modular converter 122 and second 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 (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 produce simultaneously outputting data signals.The data-signal is transferred to CAN by the first CAN and turned
NET modules 122, CAN turn the data-signal that NET modules 122 are received and are converted to NET forms, NET forms by CAN forms
Data-signal first work station 110 is transferred to by Ethernet again；The data-signal is transferred to by the second CAN
CAN turns NET modules 124, and the CAN turns the data-signal that NET modules 124 are received and is converted to NET lattice by CAN forms
Formula, the data-signal of NET forms are transferred to second work station 120 by Ethernet again.
In the present invention, universal logic module 130 by CAN (the first CAN, the second CAN) with
Modular converter (CAN turns NET modules 122, CAN turns NET modules 124) communicates, because CAN communication is than other bus forms biography
The speed of transmission of data is fast, after data turn NET modules 122,124 by CAN, can quickly send data to computer operation progress
Centralized Monitoring (modular converter connects interchanger by Ethernet), has good interactivity；Communicated, done using dual CAN bus
To the redundancy of data, dual CAN bus communication can turn NET modules by different CAN respectively and enter the first computer operation respectively
Stand 110 and second computer work station 120, so redundancy monitoring, the first computer workstation can be carried out to access point respectively
110 and second computer work station 120 can also do effective redundancy, realize safest monitoring.
The present invention uses modularized design circuit, and single universal logic module 130 (is specifically seen below to figure
2 description) 12 curtage signals can be received, using the microprocessor of itself of universal logic module 130 by number
It is transmitted according to by dual CAN bus (i.e. the CAN of redundancy), while a substation (subsystem) can accommodate 16 pieces so
Universal logic module 130, such a substation can have the access of 192 points, and this 192 points turn NET moulds by CAN
Block 122,124 change after to computer workstation Centralized Monitoring, turning NET modules by extending n CAN can have individual 192 points of n defeated
Enter, system can reception capacity can be gone down by this extended mode infinite expanding, n here can be the natural number more than 2.
(2) internal structure of universal logic module
It refer to shown in Fig. 2, its circuit for a universal logic module in Fig. 1 in one embodiment shows
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 includes N number of current/voltage signaling interface IN, its be used to receive or send electric current/
Voltage signal, the N is natural number, and in the specific embodiment shown in Fig. 2, the input/output module 210 includes 12 electricity
Stream/voltage signal interface IN, and it is 4~20mA or, 0~10V that it, which receives the scope 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.
Foreign current/voltage signal that the input/output module 210 is received is supplied to the microprocessor,
Foreign current/voltage signal that the microprocessor receives to it is handled 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
Its data-signal received is converted into the data-signal of CAN forms, then the number of the CAN forms is transmitted by the first CAN
It is believed that number giving the first modular converter 122；The data-signal that the second CAN communication module 224 is received is converted into CAN lattice
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.So,
Universal logic module can shown in Fig. 2 is realized double between the first modular converter 122 and the second modular converter 124
CAN communicates.
In the 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 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 with the second modular converter 124.
Please continue to refer to shown in Fig. 2, the universal logic module shown in Fig. 2 (is not marked also including the power module
Note), the power module includes Switching Power Supply 232, and the input of the Switching Power Supply 232 is connected with external power supply, and it is exported
Hold to the device power supply in the universal logic module, and the low progress of insulation of the Switching Power Supply 232 to external power supply
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 individual embodiment, by the turn-on and turn-off of controlling switch pipe, the voltage received to its input enters the Switching Power Supply 232
Row transformation, to export stable output voltage by its output end.
Please continue to refer to shown in Fig. 2, the power module in the universal logic module shown in Fig. 2 also includes the
One variable-voltage power supply 234 and the second variable-voltage power supply 236.
The input of first variable-voltage power supply 234 is connected with the output end of the Switching Power Supply 232, first transformation
The output end of power supply 234 is connected with the power end of the first CAN communication module 222, first variable-voltage power supply 234 be used for pair
The voltage that its input receives carries out transformation, to obtain transformation voltage, and exports the transformation voltage by its output end.It is described
The input of second variable-voltage power supply 236 is connected with the output end of the Switching Power Supply 232, second variable-voltage power supply 236 it is defeated
Go out end with the power end of the second CAN communication module 224 to be connected, second variable-voltage power supply 236 is used to input it termination
The voltage received carries out transformation, to obtain transformation voltage, and exports the transformation voltage by its output end.
Wherein, Switching Power Supply 232, the first variable-voltage power supply 234 and the second variable-voltage power supply 236 can use existing power supply electricity
Road and the technology of transforming circuit, therefore will not be repeated here.
In a specific embodiment, the external power supply is 24V dc source；The Switching Power Supply 232 is 24V
Turn 3V Switching Power Supply；The variable-voltage power supply 236 of first variable-voltage power supply 234 and second is the variable-voltage power supply that 3V turns 5V.
(3) indicating lamp structure of universal logic module
It refer to shown in Fig. 2, which show the internal structure of the indicator lamp of the universal logic module in the present invention,
Refer to shown in Fig. 3, it is the top view of universal logic module in one embodiment shown in Fig. 2, which show
The external structure of the indicator lamp of universal logic module.
With reference to shown in Fig. 2 and Fig. 3, the indicator lamp of the universal logic module in the present invention includes the first light-emitting diodes
Pipe D1, the second light emitting diode D2, the 3rd light emitting diode D3, the 4th light emitting diode D4 and the 5th light emitting diode D5, with
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 are luminous
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 is used to show that the first CAN communication module 222 receives whether data have
Failure.Similarly, the second CAN communication module 224 and the 3rd light emitting diode D3 (Tx) and the 4th light emitting diode D4 (Rx)
It is connected, the 3rd light emitting diode D3 is used to show whether the second CAN communication module 224 sends data faulty；4th hair
Optical diode D4 is used to show whether the second CAN communication module 224 receives data faulty.In one embodiment, institute
The first light emitting diode D1 to the 4th light emitting diode D4 is stated by whether flashing to show that corresponding CAN communication module receives number
According to or receive data it is whether faulty, such as, when the first light emitting diode D1 flash, expression the first CAN communication module 222 have
Data are sent, and when the first light emitting diode D1 does not flash, it is faulty to represent that the first CAN communication module 222 sends data；When
When two light emitting diode D2 flash, 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
Device whether normal work.In one embodiment, the 5th light emitting diode D5 passes through bright or go out to show that microprocessor is
No normal work, such as, when the microprocessor normal work, the 5th light emitting diode D5 Chang Liang, when the microprocessor
During failure, the 5th light emitting diode D5 often goes out；For another example, when the microprocessor normal work, the 5th light-emitting diodes
Pipe D5 often goes out, when the microprocessor breaks down, the 5th light emitting diode D5 Chang Liang.
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 and reception signal of the current/voltage signaling interface
It is whether normal.For example the interface of a current/voltage signal in the left side of the input/output module 210 includes the He of pin 1
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 includes 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 refer to shown in Fig. 4, it is the failure Programmable logical controller mould in the programmable logic control system shown in Fig. 1
The schematic flow sheet of the recognition methods of block.Below in conjunction with Fig. 1, the 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 sent
Heartbeat signal after, send the data-signal of specified format includes address to the modular converter 122,124, the data-signal
The heartbeat signal that signal, current/voltage signal and the corresponding universal logic module 130 receive, wherein, it is described
The external signal that current/voltage signal receives for the corresponding universal logic module；The address signal is institute
The signal (similar gateway 1-255) that microprocessor in universal logic module corresponding to stating obtains after self detecting.
In one specific embodiment, the universal logic module 130 changes the current/voltage signal of the outside received
The data signal that can recognize that into computer, then again by the data 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 transfer to corresponding
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
By mistake, then universal logic module 130 corresponding to judging there may be failure.
To sum up shown, the recognition methods of the failure universal logic module in the present invention can be to FPGA control
Universal logic module in system processed is monitored, and can be quickly found out out of order universal logic module.
(5) external structure of universal logic module
In order to facilitate the fixation of universal logic module, external structure of the present invention to universal logic module
Improved.
It refer to shown in Fig. 5, the backside structure of its universal logic module for the present invention in one embodiment
Explosive view；It refer to shown in Fig. 6, it is in when fixing position for the universal logic module shown in Fig. 5 in buckle
Structural representation；It refer to shown in Fig. 7, it is the universal logic module shown in Fig. 5 when buckle is in solution card position
Structural representation.
Universal logic module 500 shown in Fig. 5-7 includes buckle 520, is formed at the Programmable logical controller
The groove 510 at the back side of module 500 and the accepting groove 530 positioned at the outside of groove 510, the accepting groove 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 accepting groove 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 fixture 600 at the groove 510.
In specific embodiment shown in Fig. 5-7, the accepting groove 530 is included from the universal logic module 500
The first of the one lateral direction of groove 510 extension at the back side houses groove portion 532, from the described first end for housing groove portion 532
Continue to extend up to the second collecting groove portion 534 of the groove 510, in the accepting groove 530 to the direction of groove 510
The block 536 in portion, wherein, second accepting groove, formed with guide channel 5342 in 534 side wall；The buckle 520 includes card
Detain body 525, positioned at the head 522 on the top of buckle body 525, the foot 521 positioned at the bottom of buckle body 525, positioned at buckle
The shoulder 523 of the both sides of head 522 of body 525 and positioned at the both sides of buckle body 525 and it is located at the shoulder 523 and foot
Guidance part 524 between 521；The buckle body 525 include through the thickness direction of buckle body 525 cavity 5252,
Being formed from the buckle body 525 extension and the elastic clip 5256 in the cavity 5252 and finger portion 5254；The card
Button 520 can be contained in the accepting groove 530, and is moved between can conciliating card position fixing position.
(Fig. 6 is specifically referred to when the buckle 520, which is in, fixes position), and the shoulder 523 of the buckle 520 is contained in
In the first collecting groove portion 532 and bottom of the shoulder 523 of the buckle 520 is butted on the described second side for housing groove portion 534
Wall top；The guidance part 524 is contained in the described second guide channel 5342 for housing 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 away 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 fixture 600 at groove 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 housing groove portion 534 in the bottom for going out the first collecting 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 described second and housed in groove portion 534, with
So that the universal logic module 500 departs from the fixture 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 body 525
Close to the side on the head 522 of buckle 520, extension forms, and the finger portion 5254 is from the cavity 5252 of the buckle body 525
Side extension close to the foot 521 of buckle 520 forms；The block 536 one end adjacent with the finger portion 5254 formed with
Recess 5362, when the buckle 520, which is in, fixes 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 collecting groove portion 532 is more than second accepting groove
The width of portion 534, the thickness of the shoulder 523 of the buckle body 525 are more than the thickness of the guide portion 524；FPGA control
It is located at the side of the groove 510 on the back side of molding block 500, formed with the accepting groove 530 described in several, FPGA
The back portion that control module 500 also includes the universal logic module 500 of the opposite side from the groove 510 extends to
Several spaced cards 540 of the top of groove 510, can be first by the Programmable logical controller by the card 540
Module 500 is affiliated on the fixture 600 at the groove 510, then again by buckle 520 by the Programmable logical controller
Module 500 is fixed on the fixture 600 at the groove 510.
The head 522 of the buckle body 525 can use as push-and-pull portion, pass through the head of buckle body 525 described in push-and-pull
Portion 522 is so that the buckle 520 moves between conciliating card position in the fixing position of the accepting groove 530.The buckle body
525 head 522 is formed through the through hole 5222 of the thickness direction of head 522, can be auxiliary in the interior insertion of through hole 5222 at this
Assistant engineer has, to drive the buckle 520 to be moved between conciliating card position in the fixing position of the accepting groove 530.
It refer to shown in Fig. 8, it is the structural representation of the back side of the buckle shown in Fig. 1 in one embodiment, shown
Buckle 520 also include being formed at the conduit 550 at the back side of buckle 520, the back side of the buckle 520 is close to the collecting
The end face of the bottom of groove 530, the conduit 550 be located at the buckle body 525 cavity 5252 and buckle 520 foot 521 it
Between, when the buckle 520 inserts or detaches the accepting groove 530, the block 536 passes through the conduit 550.
It refer to shown in Figure 10, the structural representation of its Programmable logical controller frame for the present invention in one embodiment
Figure.Programmable logical controller frame shown in Figure 10 include installing plate 700, multiple fixtures 600 and it is multiple as illustrated in figs. 5-7 can
Programmed logic control module 500.
Wherein, multiple fixtures 600 are sequentially fixed on the end face of the installing plate 700, wherein on each fixture 600
Multiple universal logic modules 500 are all fixed with successively.It refer to described in Fig. 9, it is a fixture 600 in Figure 10
On the structure schematic diagrams of multiple universal logic modules 500 is installed.In the embodiment shown in Fig. 5 and Figure 10,
The fixture 600 is strip board.
It is pointed out that any change that one skilled in the art is done to the embodiment of the present invention
All without departing from the scope of claims of the present invention.Correspondingly, the scope of claim of the invention is also not merely limited to
In previous embodiment.
Claims (8)
1. the recognition methods of failure universal logic module in a kind of programmable control system, it is characterised in that it includes：
Modular converter gives its corresponding universal logic module with predetermined period of time and sends random heartbeat signal；
After universal logic module corresponding to described receives the heartbeat signal that the modular converter is sent, send and specify lattice
The data-signal of formula gives the modular converter, and the data-signal includes address signal, current/voltage signal and described corresponding
The heartbeat signal that universal logic module receives, wherein, the current/voltage signal is patrolled for corresponding may be programmed
Collect the external signal that control module receives；The address signal is micro- place in the corresponding universal logic module
The signal obtained after self detection of reason device,
After the modular converter receives the data-signal that corresponding universal logic module is sent, the number received is detected
It is believed that number in heartbeat signal it is whether correct；
If the modular converter detects the heartbeat signal disappearance returned with data-signal or mistake, may be programmed corresponding to judgement
Logic control module there may be failure.
2. the recognition methods of failure universal logic module in programmable control system according to claim 1, its
It is characterised by, the programmable control system includes first work station, second work station and multiple Programmable logical controller subsystems
System,
Each Programmable logical controller subsystem includes the first modular converter, the second modular converter and M Programmable logical controller
Module,
Each universal logic module is connected by CAN with the first modular converter, and first modular converter passes through
Ethernet is connected with first work station；Each universal logic module is connected by CAN with the second modular converter, institute
The second modular converter is stated by Ethernet with second work station to be connected, wherein, M is natural number,
Each universal logic module receives multiple current/voltage signals, and multiple current/voltage signals to receiving
Handled, to produce simultaneously outputting data signals；The data-signal is transferred to first modulus of conversion by the first CAN
Block, the data-signal that first modular converter is received are converted to NET forms by CAN forms, the data of the NET forms
Signal is transferred to first work station by Ethernet again；The data-signal is transferred to described second turn by the second CAN
Block is changed the mold, the data-signal that second modular converter is received is converted to NET forms by CAN forms, the NET forms
Data-signal is transferred to second work station by Ethernet again.
3. the recognition methods of failure universal logic module in programmable control system according to claim 2, its
It is characterised by, universal logic module communication module, microprocessor and the input/output module,
The input/output module includes N number of voltage/current signals interface, and it is used to receive or sends external voltage/electric current letter
Number, 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,
Foreign current/voltage signal that the input/output module is received is supplied to the microprocessor, micro- place
Foreign current/voltage signal that reason device receives to it is handled 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 data letter that the first CAN communication module is received
Number the data-signal of CAN forms is converted into, then the first modular converter is transferred to by the first CAN；Second CAN communication
The data-signal that module is received is converted into the data-signal of CAN forms, then is transferred to second turn by the second CAN
Change the mold block.
4. the recognition methods of failure universal logic module in programmable control system according to claim 3, its
It is characterised by, the universal logic module also includes power module, and the power module includes Switching Power Supply, described to open
The input in powered-down source is connected with external power supply, and its output end is powered to the device in the universal logic module, and institute
State that insulation of the Switching Power Supply to external power supply is low to be isolated,
M≤16, the N are equal to 12.
5. the recognition methods of failure universal logic module in programmable control system according to claim 1, its
It is characterised by,
The universal logic module includes buckle, the groove for being formed at the universal logic module back side and position
Accepting groove on the outside of the groove, the accepting groove extend to described from the side at the universal logic module back side
Groove,
When the buckle is contained in the accepting groove, the foot of the buckle is exposed in the groove, can by described in
Programmed logic control module is fixed on the fixture of the groove.
6. the recognition methods of failure universal logic module in programmable control system according to claim 5, its
It is characterised by,
The accepting groove includes first of the lateral groove direction extension from the universal logic module back side
House groove portion, continue to extend up to the second collecting of the groove to the groove direction from the end of the described first collecting groove portion
Groove portion, the block in the middle part of the accepting groove, wherein, formed with guide channel in the side wall of second accepting groove；
The buckle include buckle body, positioned at the head on buckle body top, the foot positioned at buckle body bottom, positioned at card
Detain the shoulder of the head on both sides of body and positioned at buckle body both sides and the guidance part between the shoulder and foot；Institute
Stating buckle body includes the cavity through the buckle body thickness direction, extends being formed from the buckle body and be located at institute
State the elastic clip in cavity and finger portion；
The buckle is contained in the accepting groove, and is moved between can conciliating card position fixing position,
When the buckle, which is in, fixes position, the shoulder of the buckle is contained in the first collecting groove portion and the card
The bottom of the shoulder of button is butted on the described second side wall top for housing groove portion；The guidance part is contained in described second and houses 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 away 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 fixture 600 of groove,
When the buckle is in solution card position, the shoulders of the buckle exit described first and house groove portion and the card
Recess the described second side wall top for housing groove portion in the bottom of the shoulder of button；The opening of the elastic clip is held on the block
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
Second houses in groove portion, to cause the universal logic module to depart from the fixture 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. the recognition methods of failure universal logic module in programmable control system according to claim 6, its
It is characterised by,
From the side on the head of the close buckle of the cavity of the buckle body, extension forms the elastic clip, and the finger portion is from institute
The side extension for stating the foot of the close buckle of the cavity of buckle body forms；
Block one end adjacent with the finger portion is formed with recess, when the buckle, which is in, fixes position, the finger portion
The recess 5362 for being partially housed in the block and the bottom of the recess of end and the block in the finger portion maintain one
Fixed distance；When the buckle is in solution card position, the end in the finger portion 5254 abuts against the bottom of the recess of the block
Portion.
8. the recognition methods of failure universal logic module in programmable control system according to claim 7, its
It is characterised by,
Described first width for housing groove portion is more than described second and houses well width, and the thickness of the shoulder of the buckle body 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, can formed with the accepting groove described in several
The back portion that programmed logic control module also includes the universal logic module of the opposite side from the groove extends to
Several spaced cards above groove, the universal logic module is affiliated in described by the card
On the fixture of groove,
The buckle also includes the conduit for being formed at the buckle back side, and the back side of the buckle is close to the collecting trench bottom
End face, the conduit inserts in the buckle between the cavity of the buckle body and the foot of buckle or detaches institute
When stating accepting groove, the block passes through the conduit.
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| CN201711092032.9A CN107807629B (en) | 2017-11-08 | 2017-11-08 | Method for identifying fault programmable logic control module in programmable control system |
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