CN201886342U - Intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display - Google Patents
Intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display Download PDFInfo
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- CN201886342U CN201886342U CN2010205888153U CN201020588815U CN201886342U CN 201886342 U CN201886342 U CN 201886342U CN 2010205888153 U CN2010205888153 U CN 2010205888153U CN 201020588815 U CN201020588815 U CN 201020588815U CN 201886342 U CN201886342 U CN 201886342U
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- secondary station
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses an intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display, which comprises an intelligent secondary station case, wherein a display, a rest device and a data wire interface are arranged on the intelligent secondary station case, a circuit board is arranged inside the intelligent secondary station case, and a power supply, a singlechip, a PROFIBUS protocol chip, an isolation chip and a communication circuit are arranged on the circuit board. The intelligent secondary station disclosed by the utility model has the beneficial effects that the intelligent secondary station is matched with a central processing unit (CPU) of a PLC to be used, when a system generates control logic fault, the CPU sends instant states of each relevant signal to the secondary station, the secondary station analyzes and judges the reasons causing the fault, instant state fault signals in logic program can be precisely positioned in real time, technical personnel can conveniently and fast eliminate the fault in time, the production assurance to the furthest degree is realized, the intelligent secondary station is provided with a display, and the fault information of hardware fault failure can be displayed.
Description
Technical field
The utility model relates to electric drilling machine PLC system from the station arrangement field, specifically is a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration.
Background technology
At present, electric drilling machine logic control part has mainly adopted Programmable Logic Controller (PLC) to be the control core, and what have has also disposed upper industrial computer.At present, the main means of its fault detect and demonstration have: 1) pilot lamp 2) pilot lamp malfunction coding 3) charactron demonstration 4) industrial control microcomputer shows or the like, but these means mainly are based on the continuation fault.Industrial control microcomputer mode particularly, PLC reaches the signal back host computer of input/output terminal host computer the purpose of monitoring is in real time realized synchronously at the scene.
Above-mentioned each means mainly still are based on the continuation fault, and promptly the long-term fault of malfunction though host computer mode real-time is higher, owing to factor affecting such as communication delay, sampling periods, exists and leaks the phenomenon of catching.
In actual use, also there are a lot of problems in conventional device, for example:
1) transient fault is difficult for investigating and prosecuting.Transient fault just is meant that the time compole of fault existence is short, transient.Such as the shake of switching signal, the loose contact of circuit, of short duration interference etc. all can cause this fault.Because the retention time of this fault is very short, almost be moment, state that the maintenance personal does not also come and each signal when seeing fault, fault has just disappeared, so by finishing traditional artificial investigation trouble spot.Can only adopt means such as conjecture, test according to system program, one by one investigation.When coherent signal more for a long time, it is big to have the investigation difficulty, the characteristics that the cycle is long have influenced the normal operation that drilling well is produced greatly.
2) fault is interrupted that system is broken down and is difficult for discovering.Cause disorderly closedown when preventing reasons such as PLC system generation hardware fault; when programming, used system software fault Interrupt Process functional blocks such as OB82, OB86; can operate with failure when making system's generation hardware fault and do not shut down; but; OB just reaction in time is out of order; can not solve fault, the use of these OB has worked to cover fault on the contrary.Because if do not inquire about the failure message of the fault diagnosis buffer zone of CPU, the user can't find these problems at all.
Summary of the invention
The utility model discloses a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration, it has every function of PLC standard slave station, and be used with the CPU of PLC, when the steering logic fault appears in system, send the immediate status of each coherent signal by CPU to slave station, have the reason of the fault of causing by the slave station analysis and judgement, and the instant playback place of being out of order, the technician can in time be fixed a breakdown rapidly, realize ensureing to greatest extent and produce.
The utility model for achieving the above object, be achieved through the following technical solutions: a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration, comprise the intelligent slave station shell, on the intelligent slave station shell display is installed, resetting means and data line interface, intelligent slave station enclosure mounting circuit boards, power supply is installed on the circuit board, single-chip microcomputer, the PROFIBUS protocol chip, isolating chip and communicating circuit, described single-chip microcomputer is connected respectively with the PROFIBUS protocol chip with display, the PROFIBUS protocol chip is connected with isolating chip, isolating chip is connected with communicating circuit, and communicating circuit is connected with data line interface.
Described single-chip microcomputer is the AT89S52 single-chip microcomputer.
Described PROFIBUS protocol chip is PROFIBUS special chip VPC3+C.
Described isolating chip is the AMD2486 isolating chip.
Described communicating circuit is the PROFIBUS-DP interface.
On the intelligent slave station shell hummer is installed, hummer is connected with single-chip microcomputer.
Described display is a light-emitting diode display.
The beneficial effects of the utility model are: can solve the deficiency that exists in the known technology; Be used with the CPU of PLC, when the steering logic fault appears in system, send the immediate status of each coherent signal to slave station by CPU, the reason that has the fault of causing by the slave station analysis and judgement, can be in real time, the transient fault signal in the accurate localization logical program, make things convenient for the technician in time to fix a breakdown rapidly, realize ensureing to greatest extent and produce; Be provided with display device, can the failure message that hardware fault is interrupted be shown; Rational in infrastructure, easy to use, security is high.
Description of drawings
Label shown in the accompanying drawing: 1, display; 2, intelligent slave station shell; 3, resetting means; 4, data line interface; 5, hummer.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
A kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration described in the utility model, comprise intelligent slave station shell 2, display 1 is installed on the intelligent slave station shell 2, resetting means 3 and data line interface 4, intelligent slave station shell 2 inner mounting circuit boards, power supply is installed on the circuit board, single-chip microcomputer, the PROFIBUS protocol chip, isolating chip and communicating circuit, described single-chip microcomputer is connected respectively with the PROFIBUS protocol chip with display 1, the PROFIBUS protocol chip is connected with isolating chip, isolating chip is connected with communicating circuit, and communicating circuit is connected with data line interface 4.
In the utility model, described PROFIBUS protocol chip preferably adopts the PROFIBUS special chip VPC3+C of German intelligent roc company exploitation, complete PROFIBUS-DP communications protocol that PROFIBUS special chip VPC3+C is integrated can independently be finished all the communication function with the PLC CPU in master station.Described single-chip microcomputer is the AT89S52 single-chip microcomputer preferably, and the AT89S52 single-chip microcomputer can be finished functions such as the initialization of PROFIBUS special chip VPC3+C, parameter configuration, and to user functions such as failure data analysis judgement, driving display 1 show.
Described isolating chip is the ADM2486 isolating chip, and its effect is to prevent that PROFIBUS-DP communication bus and PCB from going up other circuit and causing interference each other.Described communicating circuit preferably adopts the PROFIBUS-DP interface, and the PROFIBUS-DP interface is 9 needle connectors that carry out the RS485 communication, is used for carrying out communication with the CPU of PLC.This design can realize the communication speed up to 20Mbps, has improved signal velocity greatly.
For can be when the utility model detects fault, in time the reminding technology personnel note, hummer 5 preferably is installed on intelligent slave station shell 2, and hummer 5 is connected with single-chip microcomputer, can send alerting signal when single-chip microcomputer detects the PLC system and breaks down.
In above-mentioned each embodiment, the described display 1 preferred light-emitting diode display that adopts.
In the utility model, because PLC adopts the working method of intermittent scanning, CPU adopts the mode of input in batches, output in batches to handle input and output (I/O), be that CPU does not directly visit Input Address district and the OPADD district in the I/O module, but the I/O process image area of directly visiting CPU inside, therefore, the change of input signal is not to influence programmed logic immediately, but after by the CPU visit, just can influence, the reflection state of value of promptly all input signals can not change in a cycle period.In addition in a program if give an output terminal repeatedly during assignment, intermediateness only changes the output image area.Have only the value of last tax just can deliver to output terminal.The state of output signal is then just sent when output refreshes.So, if causing equipment failure, a certain signal shuts down, as long as in this cycle, all signal conditions are carried out examination, and just can the correct positioning fault-signal.
The logic control of each equipment winch of direct current drive rig, steam piano, rotating disk is an example with 4# rectifier cabinet driving 1# steam piano as shown in Figure 3, its controlling ladder such as Fig. 4 ~ and shown in Figure 9.
Fig. 4 is after receiving operating instruction, if maintenance locking switch I7.6 and I7.7 are in normal position, the utility appliance such as cooling blower of just removing closed direct current generator.Wherein T25 causes the non-disorderly closedown of equipment in order to prevent wind pressure signal from beating; because blast switch can be beated owing to equipment vibrations or blast wandering; add this time-delay and in other words beating of taking place within the 2S ignored, lose for real blast and then implement protection, cut off output.
Fig. 5 is the contactor of closed steam piano direct current generator, and the control of corresponding 3# rectifier cabinet and 4# rectifier cabinet is distinguished by two branches, and they are chain mutually, M1.2, and I17.0, I17.2, I21.0, I21.2, I10.2 are interlocking signals, I21.4, I21.6 are from lock signal.The T13 time-delay disconnects timer, is set to 2s, and this time-delay has been arranged, and D.C. contactor cut off after load current is zero again when equipment was stopped, in order to the contact of protection D.C. contactor.
Fig. 6 is that the handwheel zero-bit detects link, added this link, even then handwheel has not sent operating instruction when zero-bit, rectifier bridge also can be under an embargo owing to this is chain has output to equipment, and this has just been avoided equipment to be subjected to the impact and the beyond thought personal injury of impact load.Adding comparer is in order to prevent that the zero-bit switch from damaging the back restriction and losing efficacy, to play the double insurance effect.
Fig. 7 is a cabinet inner blower closure, when M22.3 is " 1 " when the 6RA70 non-fault, and closed cooling blower, time-delay disconnects relay T12 to be allowed blower fan stop the back at cupboard continue cooling 10s, so that waste heat in the cabinet is dispersed.M14.2 (MP1 current failure) is two motor synchronous guard signals that refer to, to prevent two motor loads damage equipment when uneven.
Fig. 8 enables link, and enable signal M11.1 is in order to enable the transmission of given signal, and the handwheel signal that is about to receive sends to the 6RA70 device, to drive rectifier cabinet.
Fig. 9 is given signal sending link, and the handwheel signal is mail to the corresponding buffer zone of data block, is transmitted by the communication processing capacity then.The comparer that adds is exactly a runaway protection link, is that given signal is filtered, and prevents to disturb to overflow etc. to cause the unexpected signal of driving to be sent out.
By above program as seen: I7.6, I7.7, I5.7, M1.2, I17.0, I17.2, I21.0, I21.2, I10.2, I21.4,21.6, I3.3, I20.0, I20.2, M14.2, M22.3 etc. are the qualification signals of the normal operation of equipment.I.e. any cut-out of normal these signals in service all can cause equipment downtime.And the signal of some front such as I5.7 to the limited again tailor-made usefulness of the signal of back.I.e. establishment to the back signal has prerequisite effect.So when device fails is shut down, need investigate sequentially, just can try to achieve real fault-signal.
This chain class control of PLC can equivalence be ladder diagram shown in Figure 12, I1 wherein, I2 ... In is the qualification signal of equipment operation signal Q, promptly " 0 " attitude of arbitrary signal wherein all can cause equipment to stop, and, some signal that is positioned at the front may be again the prerequisite signal of signal thereafter, and promptly their " 0 " attitude can cause the inevitable reset of some signal thereafter.In the design, the main task one of PLC aspect is to want the generation of failure judgement, the 2nd, and as other slave stations are transmitted data, the state of each the related switch amount during with fault or fault data are sent to pretends the monitoring slave station.The control flow of its failure monitoring part as shown in figure 11, " ↓ " expression negative edge.
At this is that the criterion that negative edge takes place as fault takes place for " 1 " and Q with operating instruction just, simultaneously also as " trigger " that send failure message.That is to say, enable all to regard as fault so long as not losing of cutoff command initiation.And only send failure message in the moment that negative edge takes place, just guaranteed that failure message is in time with effective.
After receiving failure message, single-chip microcomputer is as long as investigate one by one by the sequence of operation of each signal among Figure 12, and first signal for " 0 " is exactly the arch-criminal who causes fault.
To OB class fault,, promptly, just send failure message, thereby also guaranteed instantaneity and accuracy to slave station as long as this OB interrupt call takes place as long as establishment sends information programme in relevant OB piece of tissue.
Claims (7)
1. can realize monitoring of the PLC system failure and the intelligent slave station that shows for one kind, comprise intelligent slave station shell (2), it is characterized in that: intelligent slave station shell (2) is gone up display (1) is installed, resetting means (3) and data line interface (4), the inner mounting circuit boards of intelligent slave station shell (2), power supply is installed on the circuit board, single-chip microcomputer, the PROFIBUS protocol chip, isolating chip and communicating circuit, described single-chip microcomputer is connected respectively with the PROFIBUS protocol chip with display (1), the PROFIBUS protocol chip is connected with isolating chip, isolating chip is connected with communicating circuit, and communicating circuit is connected with data line interface (4).
2. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: described single-chip microcomputer is the AT89S52 single-chip microcomputer.
3. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: described PROFIBUS protocol chip is PROFIBUS special chip VPC3+C.
4. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: described isolating chip is the AMD2486 isolating chip.
5. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: described communicating circuit is the PROFIBUS-DP interface.
6. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: intelligent slave station shell (2) is gone up hummer (5) is installed, and hummer (5) is connected with single-chip microcomputer.
7. a kind of intelligent slave station that can realize monitoring of the PLC system failure and demonstration according to claim 1, it is characterized in that: described display (1) is a light-emitting diode display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205888153U CN201886342U (en) | 2010-11-03 | 2010-11-03 | Intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205888153U CN201886342U (en) | 2010-11-03 | 2010-11-03 | Intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display |
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| CN201886342U true CN201886342U (en) | 2011-06-29 |
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| CN2010205888153U Expired - Fee Related CN201886342U (en) | 2010-11-03 | 2010-11-03 | Intelligent secondary station capable of realizing programmable logic controller (PLC) system fault monitoring and display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424292A (en) * | 2011-07-28 | 2012-04-25 | 杭州大华工控技术有限公司 | Intelligent alarm method for splitting machine |
| CN103809499A (en) * | 2012-11-14 | 2014-05-21 | 财团法人资讯工业策进会 | Remote monitoring system and method |
| CN110912793A (en) * | 2019-12-30 | 2020-03-24 | 江阴拓普电气有限公司 | Power supply communication bus system |
| CN110927437A (en) * | 2019-11-05 | 2020-03-27 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
-
2010
- 2010-11-03 CN CN2010205888153U patent/CN201886342U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424292A (en) * | 2011-07-28 | 2012-04-25 | 杭州大华工控技术有限公司 | Intelligent alarm method for splitting machine |
| CN102424292B (en) * | 2011-07-28 | 2015-12-02 | 杭州大华工控技术有限公司 | A kind of method of the intelligent alarm for cutting machine |
| CN103809499A (en) * | 2012-11-14 | 2014-05-21 | 财团法人资讯工业策进会 | Remote monitoring system and method |
| CN103809499B (en) * | 2012-11-14 | 2016-10-05 | 财团法人资讯工业策进会 | remote monitoring system and method |
| CN110927437A (en) * | 2019-11-05 | 2020-03-27 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
| CN110927437B (en) * | 2019-11-05 | 2022-01-28 | 石钢京诚装备技术有限公司 | Method for diagnosing and solving profibus-DP network fault |
| CN110912793A (en) * | 2019-12-30 | 2020-03-24 | 江阴拓普电气有限公司 | Power supply communication bus system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20111103 |