CN101819419B - Active plc intelligent liquid crystal display - Google Patents
Active plc intelligent liquid crystal display Download PDFInfo
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- CN101819419B CN101819419B CN2009100642977A CN200910064297A CN101819419B CN 101819419 B CN101819419 B CN 101819419B CN 2009100642977 A CN2009100642977 A CN 2009100642977A CN 200910064297 A CN200910064297 A CN 200910064297A CN 101819419 B CN101819419 B CN 101819419B
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Abstract
The invention relates to man-machine interface equipment used for a PLC, in particular to an active PLC intelligent liquid crystal display. The active PLC intelligent liquid crystal display comprises a liquid crystal display, wherein a touch screen is arranged in front of the liquid crystal display; the liquid crystal display and the touch screen are connected with a CPU; the CPU is connected with an internal memory, a program memory and an output communication interface; configuration software is cured in the program memory; and the configuration software actively and regularly reads original data of a common memory area of the PLC and perform analysis, calculation, conversion and the like on the data. As the configuration software does not occupy a main control program resource of the PLC, the reliability and the real-time performance of the active PLC intelligent liquid crystal display are improved; and an operator can regulate relay information in real time, so the interactivity of the active PLC intelligent liquid crystal display is improved.
Description
Technical field
The present invention relates to the human interface device on a kind of PLC of being used for, relate in particular to a kind of active PLC intelligent liquid crystal display.
Background technology
Along with the development of industrial automation, almost spread all over all automation control area based on the automation equipment of PLC.In the application process of PLC, often need the be in the action running status of checkout facility of operating personnel, machine is carried out prevention, analysis and the maintenance of fault, thereby state or the numerical value of simultaneously revising some relay of PLC at any time according to field conditions reach the purpose of optimizing the produced on-site process.But field condition complexity, face the equipment of the various models of One's name is legion, operating personnel can't obtain the operation conditions or the data of individual device at all in time, also can not make reaction rapidly to equipment constantly urgent, the various faults that the more impossible PLC of effectively preventing may occur, the workload of overhauling under situation about breaking down simultaneously is very big, efficient is very low, therefore (1) how can system, comprehensively, convenient, accurately, understand, change real-time field conditions on one's own initiative; (2) how can carry out trouble-saving, analysis and eliminating and scene protection efficiently, intelligently, wherein not only need to diagnose the fault of work on the spot equipment, also need to diagnose the fault of PLC self, all be the problem of needing solution at present badly.
Method at the present head it off of problem (1) has: the data that a, passive reception PLC beam back; B, obtain video data to PLC application.The principle of a method is to need to show the data or the state of which relay by the PLC decision, and issues display device, and display device is done corresponding demonstration again.Display device is passive reception data in the method, the CPU of PLC should control field apparatus again to the display device Data transmission, over-burden for PLC so on the one hand, can't guarantee the real-time of Data transmission, operating personnel also can't control, adjust on-the-spot parameter by display device on the other hand, and are interactive, real-time is all poor.The principle of b method is that display device and PLC carry out interactive communication, at first send the renewal request of data by display device, PLC with corresponding relays address, data, take that the form with regulation sends display device to after the relevant information integration processing such as byte number, display device requires to show according to user's configuration again.The integration processing process of data will take the extensive work time of the CPU of PLC, and CPU also can only do communication in the idle gap of control field apparatus and reply work, so just can not guarantee to obtain the real-time of data, also may cause losing of data, reliability, real-time are all more weak.
Method at the present head it off of problem (2) has: a, manually maintenance by rule of thumb; B, look into the specialty manual data; C, consult relevant expert; D, by failure diagnostic apparatus.The a method has only veteran professional and technical personnel just can accomplish, in the face of complicated field apparatus, different professional and technical personnel may have different judgements, and ability, the energy of adding the people are limited, can not accomplish exhaustively, occurs maloperation easily.It is too high that the method professional requires, and failure diagnosis time is long and accuracy is low, is difficult to satisfy the requirement of industry spot.When equipment broke down, the professional and technical personnel checked relevant technical manual accordingly by checking the correlation behavior of PLC, handles accordingly then in the b method, and the professional requirement of the method is also too high, and efficient is also lower.The c method then more wastes time, and need get in touch with the expert and handle, and Fault Diagnosis, processing time all can not guarantee like this.The d method is that the failure diagnostic apparatus by means of specialty provides rational diagnosis and analysis result, help operating personnel to solve fault fast, the method need be bought the diagnostic equipment of high cost, and field apparatus is numerous, can not all dispose a diagnostic equipment by every equipment, expense also can't be carried out the prevention and the analysis of fault on the other hand simultaneously than higher to many machines so on the one hand.Above-mentioned several method all is not implemented in emergency circumstances thereby field apparatus is carried out the function that emergency protection is avoided bigger loss.
Summary of the invention
The purpose of this invention is to provide a kind of active PLC intelligent liquid crystal display, it does not take the primary control program resource of PLC, and reliability and real-time improve, and operating personnel can adjust relay information in real time, has improved interactivity.
For solving the problems of the technologies described above, the present invention includes: LCD, touch-screen is set before the LCD, LCD is connected CPU with touch-screen, CPU connects internal storage, program storage and outputting communication interface, solidifies the configuration software of following steps in the described program storage:
(1) CPU is by the outputting communication interface, and PLC is with the once unbroken internal storage of passing back of all devices data in the common storage area in the PLC storer in request;
(2), and deposit the device data of each equipment records in the equipment chained list according to the equipment chained list according to predefined Memory Allocation table structure equipment chained list;
(3) with the current data item of each equipment records in display device mapping table and the opertaing device mapping table, upgrade according to the data item of the relevant device record of equipment chained list, be configured to complete display device mapping table and opertaing device mapping table;
(4) under the control of CPU, the display device mapping table is passed to display module, simultaneously the opertaing device mapping table is passed to control module;
(5) display module calls liquid crystal display-driving on LCD, shows to represent the pel of each equipment and the current data item of the equipment records in the pel corresponding device mapping table;
Repeat the above-mentioned steps of (1)-(5) every 90-100ms by CPU control;
With
(a) when the user represents the pel of particular device by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, control module is upgraded the current data item of pel corresponding equipment record in the opertaing device mapping table, again according to the new opertaing device mapping table chained list of updating the equipment, under the control of CPU, the new equipment chained list is passed through the outputting communication interface then, be returned to common storage area in the PLC storer.
Described configuration software is in step (2) operation, and also Yun Hang fault analysis application program comprises following steps:
(I) the current data item that writes down according to corresponding equipment in the equipment running status mapping table of storing on the equipment chained list updating memory reservoir;
(II) record current data Xiang Yuqi predefined normal range upper limit item and the lower limit item with equipment compares, if equipment records current data item is less than 30% of lower limit, then produce failure code and equal 1, if equipment records current data item is greater than 1.7 times of lower limit, then produce failure code and equal 2, if equipment records current data item greater than lower limit 30% and smaller or equal to 70% of lower limit, then produce failure code and equal 3, if equipment records current data item is greater than 1.3 times of the upper limit and smaller or equal to 1.7 times of the upper limit, then produce failure code and equal 4, if equipment records current data item greater than lower limit 70% and less than lower limit, then produce failure code and equal 5, if equipment records current data item is greater than the upper limit and smaller or equal to 1.3 times of the upper limit, then produce failure code and equal 6, the corresponding code table with fault of the failure code of faulty equipment is compared, if diagnostic trouble code is 1 or 2 and is high-grade fault, then with the numerical value of the emergency action data item in the faulty equipment record in the corresponding code table of fault, answer the data item of equipment to carry out intelligent protection by common storage area equipment chain epiphase in the outputting communication interface change PLC storer, if not high-grade fault, then show fault content and repair method;
Successively each equipment records in the equipment running status mapping table is carried out the operation of step (II).
Described configuration software adds following steps in the back of (I):
(i1) the equipment running status mapping table is backed up;
If not high-grade fault, when showing fault content and repair method, send chimes of doom in the described step (II) by calling sound card driver.
The present invention utilizes the bi-directional data read-write capability of the inner common storage area of PLC, under the prerequisite of the primary control program resource that does not take PLC, thereby by the communication module of PLC and according to the periodically direct data content that obtains in batches in the common storage area in the address of common storage area, comprising on-the-spot raw data and PLC internal operation state, failure code etc., the raw data that reads is analyzed automatically, processing such as computing, configuration according to the user requires to show then, thereby data such as failure code are resolved prevention and the eliminating of PLC being carried out fault, possess active control function, when obtaining field data in real time, alleviated the work load of PLC again; Operating personnel just can monitor the parameter of on-the-spot each equipment by display device, and are interactive, operability is stronger; Possess intelligent trouble diagnosis, get rid of function, when PLC broke down or be in the hole, the automatic warning reminding of meeting of the present invention also provided diagnostic result, helped operating personnel in time to scent a hidden danger, fix a breakdown, and had improved on-the-spot maintainability, security; When being in an emergency, the protection actions such as switching, time-out of equipment are carried out in meeting of the present invention automatically according to field conditions, and security is stronger; Abundant intelligent picture and text Presentation Function has further improved diversity, intuitive, real-time, vividness, the multi-stratification when showing PLC equipment, simultaneously with the dynamic menu of artificial site equipment operation situation display scene state visually.
Description of drawings
Fig. 1 is the hardware system block diagram of first kind of embodiment of the present invention.
Fig. 2 is first kind of embodiment software system structure figure of the present invention.
Fig. 3 is first kind of embodiment configuration processes software program flow chart of the present invention.
Fig. 4 is the program flow diagram of data processing section in second kind of embodiment configuration processes software of the present invention.
Fig. 5 is the program flow diagram of second kind of embodiment fault analysis application program of the present invention.
Embodiment
First kind of embodiment of the present invention: the present invention adopts LCD as shown in Figure 1, touch-screen is set before the LCD, LCD is connected CPU with touch-screen, CPU connects sdram memory reservoir, FLASHROM program storage and outputting communication interface, and CPU adopts ARM9 series nucleus module; LCDs adopts high-resolution TFT; Touch-screen is equipped with 4 wire resistance type touch-screens; The outputting communication interface adopts RS232 interface and PLC real-time communication.The connecting circuit of CPU and internal storage and program storage is a prior art, and the outputting communication interface circuit also is a prior art.The connecting circuit of LCD and touch-screen and CPU is a prior art.
Software section structure of the present invention as shown in Figure 2, hardware drive program is a prior art, is provided by the hardware vendor.Special-purpose embedded OS adopts existing WinCE or (SuSE) Linux OS.Adopt VC to write configuration software, configuration software adopts object-oriented method, by calling dynamic link library file, support the various communications protocol of PLC such as Modbus, hostlink-fins etc., and, make the PLC of the various models of the producer of main flow on the compatible market of the present invention to the unified interface definition of the common storage area of each PLC producer; Adopt multithreading to make the multi-tasks such as reading and writing data, picture demonstration satisfy real-time requirement; Utilize The Component Object Model to make the user can carry out the editor of picture easily; Abundant graphic elements storehouse has strengthened the practicality and the aesthetic property of display interface.
Be solidificated in the program storage of liquid crystal display display its step as Fig. 3 configuration software as follows:
(1) CPU is by the outputting communication interface, and PLC is with the once unbroken internal storage of passing back of all devices data in the common storage area in the PLC storer in request;
(2), and deposit the device data of each equipment records in the equipment chained list according to the equipment chained list according to predefined Memory Allocation table structure equipment chained list;
(3) with the current data item of each equipment records in display device mapping table and the opertaing device mapping table, upgrade according to the data item of the relevant device record of equipment chained list, be configured to complete display device mapping table and opertaing device mapping table;
(4) under the control of CPU, the display device mapping table is passed to display module, simultaneously the opertaing device mapping table is passed to control module;
(5) display module calls liquid crystal display-driving on LCD, shows to represent the pel of each equipment and the current data item of the equipment records in the pel corresponding device mapping table;
Repeat the above-mentioned steps of (1)-(5) every 90ms by CPU control;
With
(a) when the user represents the pel of particular device by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, control module is upgraded the current data item of pel corresponding equipment record in the opertaing device mapping table, again according to the new opertaing device mapping table chained list of updating the equipment, under the control of CPU, the new equipment chained list is passed through the outputting communication interface then, be returned to common storage area in the PLC storer.
Equipment chained list in the PLC storer is disclosed data structure in the prior art.
1. the data layout of each record is as follows in the display device mapping table:
| Implementor name | The device address | Last data | Current data |
2. the data layout of each record is as follows in the opertaing device mapping table:
| Implementor name | The device address | Last data | Current data |
Pel is for being used for picture, form, the literal expression form that representative equipment and equipment state and equipment state are adjusted on display.Pel is by setting up corresponding relation between chained list and equipment chained list, makes to set up between pel and PLC field apparatus with relation, also can realize control to equipment by the setting to primitive attribute simultaneously.The representation of pel is convenient to the state that the user gets information about the equipment of PLC control, and conveniently equipment is carried out necessary control.
In Fig. 4, the Memory Allocation table is the database in the PLC address of the various device that is connected with PLC of predefined record.The data layout that writes down in the Memory Allocation table is: implementor name, address, take byte number.The data layout that writes down in the equipment chained list is: implementor name, address, take byte number, data.
Second kind of embodiment of the present invention: the hardware configuration of second kind of embodiment is identical with first kind of embodiment, just adds the fault analysis application program in the configuration program of first kind of embodiment, and is as follows as Fig. 3, Fig. 4 and its step of Fig. 5:
(1) CPU is by the outputting communication interface, and PLC is with the once unbroken internal storage of passing back of the equipment chained list in the common storage area in the PLC storer in request;
(2), and deposit the device data of each equipment records in the equipment chained list according to the equipment chained list according to predefined Memory Allocation table structure equipment chained list;
(3) with the current data item of each equipment records in display device mapping table and the opertaing device mapping table, upgrade according to the data item of the relevant device record of equipment chained list, be configured to complete display device mapping table and opertaing device mapping table;
Simultaneously, the current data item that (I) writes down according to corresponding equipment in the equipment running status mapping table of storing on the equipment chained list updating memory reservoir;
(II) record current data Xiang Yuqi predefined normal range upper limit item and the lower limit item with equipment compares, if equipment records current data item is less than 30% of lower limit, then produce failure code and equal 1, if equipment records current data item is greater than 1.7 times of lower limit, then produce failure code and equal 2, if equipment records current data item greater than lower limit 30% and smaller or equal to 70% of lower limit, then produce failure code and equal 3, if equipment records current data item is greater than 1.3 times of the upper limit and smaller or equal to 1.7 times of the upper limit, then produce failure code and equal 4, if equipment records current data item greater than lower limit 70% and less than lower limit, then produce failure code and equal 5, if equipment records current data item is greater than the upper limit and smaller or equal to 1.3 times of the upper limit, then produce failure code and equal 6, the corresponding code table with fault of the failure code of faulty equipment is compared, if diagnostic trouble code is 1 or 2 and is high-grade fault, then with the numerical value of the emergency action data item in the faulty equipment record in the corresponding code table of fault, answer the data item of equipment to carry out intelligent protection by common storage area equipment chain epiphase in the outputting communication interface change PLC storer, if not high-grade fault, then show fault content and repair method;
Successively each equipment records in the equipment running status mapping table is carried out the operation of step (II).
(4) under the control of CPU, the display device mapping table is passed to display module, simultaneously the opertaing device mapping table is passed to control module;
(5) display module calls liquid crystal display-driving on LCD, shows to represent the pel of each equipment and the current data item of the equipment records in the pel corresponding device mapping table;
Repeat the above-mentioned steps of (1)-(5) every 100ms by CPU control;
With
(a) when the user represents the pel of particular device by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, control module is upgraded the current data item of pel corresponding equipment record in the opertaing device mapping table, again according to the new opertaing device mapping table chained list of updating the equipment, under the control of CPU, the new equipment chained list is passed through the outputting communication interface then, be returned to common storage area in the PLC storer.
3. the data layout of each record of equipment running status mapping table is as follows:
| Implementor name | The device address | Normal range | Current data |
4. the corresponding tableau format of failure code is as follows:
| Implementor name | The device address | Failure code | Fault level | The fault content | Repair method | Emergency action |
The third embodiment of the present invention: the hardware configuration of the third embodiment is identical with first kind of embodiment, just adds the fault analysis application program in the configuration program of the third embodiment, and is as follows as Fig. 3, Fig. 4 and its step of Fig. 5:
(1) CPU is by the outputting communication interface, and PLC is with the once unbroken internal storage of passing back of the equipment chained list in the common storage area in the PLC storer in request;
(2), and deposit the device data of each equipment records in the equipment chained list according to the equipment chained list according to predefined Memory Allocation table structure equipment chained list;
(3) with the current data item of each equipment records in display device mapping table and the opertaing device mapping table, upgrade according to the data item of the relevant device record of equipment chained list, be configured to complete display device mapping table and opertaing device mapping table;
Simultaneously, the current data item that (I) writes down according to corresponding equipment in the equipment running status mapping table of storing on the equipment chained list updating memory reservoir;
(II) the equipment running status mapping table is backed up;
(III) record current data Xiang Yuqi predefined normal range upper limit item and the lower limit item with equipment compares, if equipment records current data item is less than 30% of lower limit, then produce failure code and equal 1, if equipment records current data item is greater than 1.7 times of lower limit, then produce failure code and equal 2, if equipment records current data item greater than lower limit 30% and smaller or equal to 70% of lower limit, then produce failure code and equal 3, if equipment records current data item is greater than 1.3 times of the upper limit and smaller or equal to 1.7 times of the upper limit, then produce failure code and equal 4, if equipment records current data item greater than lower limit 70% and less than lower limit, then produce failure code and equal 5, if equipment records current data item is greater than the upper limit and smaller or equal to 1.3 times of the upper limit, then produce failure code and equal 6, the corresponding code table with fault of the failure code of faulty equipment is compared, if diagnostic trouble code is 1 or 2 and is high-grade fault, then with the numerical value of the emergency action data item in the faulty equipment record in the corresponding code table of fault, answer the data item of equipment to carry out intelligent protection by common storage area equipment chain epiphase in the outputting communication interface change PLC storer, if not high-grade fault, then show fault content and repair method, and call sound card driver and send chimes of doom;
Successively each equipment records in the equipment running status mapping table is carried out the operation of step (III).
(4) under the control of CPU, the display device mapping table is passed to display module, simultaneously the opertaing device mapping table is passed to control module;
(5) display module calls liquid crystal display-driving on LCD, shows to represent the pel of each equipment and the current data item of the equipment records in the pel corresponding device mapping table;
Repeat the above-mentioned steps of (1)-(5) every 95ms by CPU control;
With
(a) when the user represents the pel of particular device by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, control module is upgraded the current data item of pel corresponding equipment record in the opertaing device mapping table, again according to the new opertaing device mapping table chained list of updating the equipment, under the control of CPU, the new equipment chained list is passed through the outputting communication interface then, be returned to common storage area in the PLC storer.
The present invention connects the present invention by computer, and carries out the initialization negative value by the interface of daemon software editor configuration application program in the prior art with to each tables of data in the internal storage before operation configuration application program.Regularly initiatively read the raw data of PLC common storage area in the course of the work in the present invention, the configuration application program then to the raw data that reads analyze, processing such as computing, conversion, data are associated with user-defined equipment, the result is shown on TFT LCD in the mode at interfaces such as chart, animation, literal, and these data are stored, in order to check in the future.Operating personnel operate and can be optimized on-site parameters by touch-screen.The intellectual analysis program is with the self recording apparatus operational factor, the data of discovering device memory block change or judge when abnormal conditions are arranged according to database, with sound, light, modes such as figure, text are sent vision, aural alert, and the notifying operation personnel in time handle, guarantee the safety of operating personnel and equipment, when breaking down, the intellectual analysis program will provide possible trouble spot and solution, help operating personnel to find illness rapidly and accurately, save the time, reduced cost; When being in an emergency, this program will be carried out operations such as some time-outs, equipment switching, outage automatically, and with the mode notifying operation personnel of image, thereby avoid bigger accident and loss.
Claims (4)
1. active PLC intelligent liquid crystal display, comprise LCD, touch-screen is set before the LCD, LCD is connected CPU with touch-screen, CPU connects internal storage, program storage and outputting communication interface, it is characterized in that: the configuration software that solidifies following steps in the described program storage:
(1) CPU is by the outputting communication interface, and PLC is with the once unbroken internal storage of passing back of all devices data in the common storage area in the PLC storer in request;
(2), and deposit the device data of each equipment records in the equipment chained list according to the equipment chained list according to predefined Memory Allocation table structure equipment chained list;
(3) with the current data item of each equipment records in display device mapping table and the opertaing device mapping table, upgrade according to the data item of the relevant device record of equipment chained list, be configured to complete display device mapping table and opertaing device mapping table;
(4) under the control of CPU, the display device mapping table is passed to display module, simultaneously the opertaing device mapping table is passed to control module;
(5) display module calls liquid crystal display-driving, shows on LCD and represents the pel of each equipment and the current data item of the equipment records in the pel corresponding device mapping table;
Repeat the above-mentioned steps of (1)-(5) every 90-100ms by CPU control;
With
(a) when the user represents the pel of particular device by showing on the touch-screen liquid opaque crystal display, amended new equipment information is passed to control module by the touch-screen driver, control module is upgraded the current data item of pel corresponding equipment record in the opertaing device mapping table, again according to the new opertaing device mapping table chained list of updating the equipment, under the control of CPU, the new equipment chained list is passed through the outputting communication interface then, be returned to common storage area in the PLC storer.
2. active PLC intelligent liquid crystal display according to claim 1 is characterized in that: described configuration software is in step (2) operation, and also Yun Hang fault analysis application program comprises following steps:
(I) the current data item that writes down according to corresponding equipment in the equipment running status mapping table of storing on the equipment chained list updating memory reservoir;
(II) record current data Xiang Yuqi predefined normal range upper limit item and the lower limit item with equipment compares, if equipment records current data item is less than 30% of lower limit, then produce failure code and equal 1, if equipment records current data item is greater than 1.7 times of lower limit, then produce failure code and equal 2, if equipment records current data item greater than lower limit 30% and smaller or equal to 70% of lower limit, then produce failure code and equal 3, if equipment records current data item is greater than 1.3 times of the upper limit and smaller or equal to 1.7 times of the upper limit, then produce failure code and equal 4, if equipment records current data item greater than lower limit 70% and less than lower limit, then produce failure code and equal 5, if equipment records current data item is greater than the upper limit and smaller or equal to 1.3 times of the upper limit, then produce failure code and equal 6, the corresponding code table with fault of the failure code of faulty equipment is compared, if failure code is 1 or 2, regard as high-grade fault, then with the numerical value of the emergency action data item in the faulty equipment record in the corresponding code table of fault, answer the data item of equipment to carry out intelligent protection by common storage area equipment chain epiphase in the outputting communication interface change PLC storer, if not high-grade fault, then show fault content and repair method;
Successively each equipment records in the equipment running status mapping table is carried out the operation of step (II).
3. active PLC intelligent liquid crystal display according to claim 2 is characterized in that: described configuration software adds following steps in the back of (I):
(i1) the equipment running status mapping table is backed up;
4. active PLc intelligent liquid crystal display according to claim 2 is characterized in that: if not high-grade fault, when showing fault content and repair method, send chimes of doom by calling sound card driver in the described step (II).
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| CN2009100642977A CN101819419B (en) | 2009-02-27 | 2009-02-27 | Active plc intelligent liquid crystal display |
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| CN2009100642977A CN101819419B (en) | 2009-02-27 | 2009-02-27 | Active plc intelligent liquid crystal display |
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| CN101819419B true CN101819419B (en) | 2011-12-07 |
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| JP6015068B2 (en) * | 2012-03-30 | 2016-10-26 | オムロン株式会社 | Control device and control device update time display method |
| KR20180124340A (en) * | 2017-05-11 | 2018-11-21 | 엘에스산전 주식회사 | Programmable logic controller |
Citations (4)
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|---|---|---|---|---|
| CN1774679A (en) * | 2003-02-26 | 2006-05-17 | 嵌入技术有限公司 | Process control system and method for configuring a process control system |
| CN1797249A (en) * | 2004-12-29 | 2006-07-05 | 斗山英维高株式会社 | Machine control apparatus capable of treating plc interface with program and treatment method thereof |
| CN101226385A (en) * | 2008-02-01 | 2008-07-23 | 哈尔滨工业大学 | Soft PLC module of open type soft numerical control system |
| CN201145849Y (en) * | 2007-09-07 | 2008-11-05 | 刘震 | Micro computer high frequency plastic rubber welding/cutting-off machine |
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- 2009-02-27 CN CN2009100642977A patent/CN101819419B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1774679A (en) * | 2003-02-26 | 2006-05-17 | 嵌入技术有限公司 | Process control system and method for configuring a process control system |
| CN1797249A (en) * | 2004-12-29 | 2006-07-05 | 斗山英维高株式会社 | Machine control apparatus capable of treating plc interface with program and treatment method thereof |
| CN201145849Y (en) * | 2007-09-07 | 2008-11-05 | 刘震 | Micro computer high frequency plastic rubber welding/cutting-off machine |
| CN101226385A (en) * | 2008-02-01 | 2008-07-23 | 哈尔滨工业大学 | Soft PLC module of open type soft numerical control system |
Non-Patent Citations (1)
| Title |
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| JP特开2001-255913A 2001.09.21 |
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