CN110205479A - A kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method - Google Patents
A kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method Download PDFInfo
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- CN110205479A CN110205479A CN201910510571.2A CN201910510571A CN110205479A CN 110205479 A CN110205479 A CN 110205479A CN 201910510571 A CN201910510571 A CN 201910510571A CN 110205479 A CN110205479 A CN 110205479A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a kind of stainless steel annealing pickling line PLC network communication diagnosis and processing methods, including central PLC and several branch PLC, connecting fault warning device on several branch PLC, its main feature is that establishing two-way communication verifying between central PLC and several branch PLC；If authentication is correct, judge that communication is normal；The branch PLC that communication failure is judged as if authentication information is incorrect issues fault alarm, and operator stops production line after seeing fault alarm.It is an advantage of the invention that in the diagnosis for increasing the network communication between center PLC and each branch PLC in stainless steel annealing pickling line PLC automatic control system technical foundation, after PLC network outage occurs, the position broken down can be found as early as possible, and production line is allowed timely to stop, it avoids the extension of failure, reduce failure loss, provide sound assurance quickly to resume production.
Description
Technical field
The invention belongs to metallurgical equipment automation control area more particularly to a kind of stainless steel annealing pickling line PLC networks
Communication diagnosis and processing method.
Background technique
With the continuous development of science and technology, automatic control system is widely used in every field, and automation control has
The characteristics of production is cheap, manpower is saved, stay in grade, people start to pay much attention to the general of automation control in the industrial production
And degree.Especially smelter, production environment is severe, technical requirements are high, qualitative control is stringent, in the production of smelter
In, it is most of all to realize automation control.Stainless steel annealing pickling line is to carry out annealing and pickling work to the black volume of hot-rolled stainless steel
Industry improves the surface quality and material mechanical property of stainless steel coil of strip, and stainless steel annealing pickling line is tinuous production, by not
The welding realization annealing of rust steel coil of strip end to end is worked continuously with pickling.The production control of annealing and pickling line whole in the prior art
All carried out automatically controlling by PLC, due to complex process, environmental requirement height of annealing and pickling line etc., PLC automation control
System data circulation is big, therefore is all to carry out data transmit-receive using catenet.The disadvantage is that once network communication event occurs
Barrier occurs point and handles in time, will affect the operation of the entire production line if cannot diagnose and be out of order in time.
Summary of the invention
In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a kind of stainless steel annealing pickling line PLC networks
Communication diagnosis and processing method, increase each PLC net on the basis of stainless steel annealing pickling line PLC automatic control system technology
The diagnosis of network communication can find and control production line timely to stop as early as possible after PLC network communication disruption failure occurs
Come, to avoid resulting in greater loss, realizes steady production.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method, including central PLC and several branches
Connecting fault warning device on PLC, several branch PLC, its main feature is that, the center PLC and several branch PLC it
Between establish two-way communication verifying；If authentication is correct, judge that communication is normal；If authentication information is incorrect by
It is judged as that the branch PLC of communication failure issues fault alarm, operator stops production line after seeing fault alarm.
Further, the method for the two-way communication verifying includes:
The center PLC timing sends verify data to several branch PLC；The CPU scan of central PLC is primary, verifies number
Each branch PLC is sent to according to after automatic+1；Each several branch PLC connect after receiving the verify data that center PLC is sent with the last time
The verify data of receipts carries out comparing；
Several branch PLC timings send verify data to central PLC；When the CPU run-down of several branch PLC,
Central PLC is sent to after the verify data of transmission automatic+1；Central PLC receive after the verify data that several branch PLC are sent with
Last received verify data carries out comparing；
If the verify data received as the result is shown of comparing is different with last received verify data, judge
Communication is normal；
If the verify data received as the result is shown of comparing does not change with last received verify data,
Secondary data comparison is carried out after postponing a period of time, if secondary data comparison result is still with last verify data phase
Together, then judge that communication failure occurs in corresponding branch PLC；
The corresponding accident warning device of branch PLC for being judged as communication failure issues fault alarm, and operator sees event
Production line is stopped after barrier alarm.
Further, the time interval that the verify data is sent is 30-50ms.
Further, the delay time that the secondary data compares is 2S.
Compared with prior art, the invention has the advantages that in stainless steel annealing pickling line PLC automatic control system technology
On the basis of increase center PLC and each branch PLC between network communication diagnosis, when PLC network interruption failure generation after,
The position broken down can be found as early as possible, and production line is allowed timely to stop, and avoided the extension of failure, reduced failure
Loss provides sound assurance quickly to resume production.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
It is explained for more frequent English abbreviation appears below.
[1] MES:MES system is the production information management system of a set of Manufacture Enterprise workshop execution level.MES can
To provide for enterprise including Manufacturing Data Management, plan scheduling management, Production scheduling management, stock control, quality management, manpower
Resource management, tool tool management, purchasing management, cost management, project kanban system, produced work centre/equipment management
The management modules such as process control, bottom data integrated analysis, the integrated decomposition of upper layer data.
[2] LEVELl2: production management system provides automatic control parameter.
[3] abbreviation of HMI:HumanMachineInterface, " man-machine interface ", is also man-machine interface.It is system and use
The medium with information exchange is interacted between family, and manufacture automatic control is realized by it in production line.
[4] PLC programmable logic controller (PLC) is kind exclusively for the digital operation applied and designed in industrial settings
Electronic system.It uses a kind of programmable memory, and storage executes logical operation, sequential control, timing, counting inside it
With the instruction of the operations such as arithmetical operation, controlled by digital or analog input and output various types of mechanical equipments or
Production process.
[5] cpu central processing unit is the control axis of PLC and the core component of PLC, and performance determines the property of PLC
Energy.Central processing unit is by controller, arithmetic unit and register group at these circuits are all concentrated on one chip, and address is passed through
Bus, control bus are connected with the input/output interface circuit of memory.The effect of central processing unit is processing and operation user
Program, carries out logic and mathematical operation, and control whole system is allowed to coordinate.
The production control of certain smelter, annealing and pickling line whole is all carried out automatically controlling by PLC, works as production line one day
During normal production, unexpected production line stops line, the communicating interrupt of all HMI (field control computer) displays and PLC disk cabinet, and institute
There are the communication of the HMI of auxiliary unit CPL, CGL also while interrupting, outlet looping steel wire rope of windlass all disorderly falls.
After failure, enterprise carries out troubleshooting immediately, and specific processing step is as follows:
1, production line stops line, and trial inspection HMI does not have data, communicating interrupt.Outlet looping wirerope all disorderly falls.
2, CPU the and CP card-like state for first checking for PLC is all normal, finds 2 HMISEVER whole OFFLINE, right
HMISEVER restarting, and HMI file is reloaded, failure still exists.It checks outlet electric panel room HUBRACK, finds it
In all HUB status lamp all flashed in high-frequency, have a fiber optical transceiver status indicator lamp not in another RACK
Bright, the power supply is normal, and fiber optical transceiver is replaced, and failure is still the same.
3, power-off restarting is carried out to HUB all in 2 RACK, has the time less than 1 minute normal after restarting, it
It is restored to failure state again afterwards.Cable optical cables all on HUB are all extracted, are plugged one by one, when being inserted into the optical cable of LEVEL2,
Failure occurs again, removes LEVEL2 cable, other wholes are plugged, and network is normal.LEVEL2 optical cable is plugged again, failure occurs,
Primitive decision failure is caused by LEVEL2 network failure.
4, start to check LEVEL2 network and MES network by judgement before.Machinist lives to outlet simultaneously
Set wirerope carries out recovery processing, after shearing 10 meters of wirerope, reconnects.Discovery outlet electric panel room arrives in subsequent inspection
After the optical cable of finished room pulls out, network is normal (former LEVEL2 optical cable is plugged), checks finished room and the lower net for hanging 4 regions
Network not found the abnormal situation.
5, it connects this section of network by notebook to be diagnosed, the connection of diagnostic result central control chamber is abnormal.Central operation
Room finds after having a cable to pull out under LEVEL2HUB that network recovery is normal after checking.The cable pulled up by LEVEL2 just now
It searches, discovery other end is connected on the standby port of MES network, and LEVEL2 network and MES network is caused to form looped network and make
At communicating interrupt, PLC network and LEVEL2 network are the same network segments, have also resulted in PLC network interruption.
Failure reason analysis: production line stops line, and when LEVEL2 network interruption failure, there is no stop line at once for production line.Respectively
Although the data exchange between PLC is interrupted, each PLC is also in independent operating.Each PLC Communication diagnostic is found after checking program
Program running, but the signal after communicating interrupt is not connected to production line and stops in the program of line.
Before failure, process section is being run with 75MPM speed, and outlet section is drawn with 160MPM, outlet looping with -67.5% speed
Loop.After network interruption, outlet section is since it is desired that start reduction of speed, but process section PLC does not obtain real-time data and updates, and also protects
Original muzzle velocity value is held, so the speed of outlet looping does not synchronize adjustment.
After outlet section reduction of speed, outlet looping tension is begun to decline, and outlet looping trolley is influenced to start most substantially by tension
Value 2.5MPM is adjusted.Outlet section continues reduction of speed, and what outlet looping tension dropped to setting value 35% disconnected band signal occurs, and 3
Q-STOP signal is issued after second, this when, production line just started to stop line, and the wirerope of outlet looping trolley is caused to come loose.
Since annealing and pickling production line PLC network Communication diagnostic program lacks.It can be made after the generation of PLC network outage
At following loss:
1, entrance velocity is faster than central sections or muzzle velocity is slower than central sections, and entrance loop tension is lost, strip heap
Steel, wirerope come loose；
2, entrance velocity is slower than central sections or muzzle velocity is faster than central sections, and entrance loop tension increases, and strip is drawn
Disconnected, bad, wire cable rupture draws in loop trolley mechanism.
According to the prior art, the problem of PLC network is interrupted, has no idea to avoid completely, needs for entire annealing and pickling line
It is checked, complex steps are strongly professional, great work intensity.
To avoid occurring again above-mentioned communication failure accident, the present embodiment on the basis of existing PLC automatic control system,
A kind of i.e. processing method, including central PLC and several branch PLC of stainless steel annealing pickling line PLC network communication diagnosis is provided,
Connecting fault warning device on several branch PLC establishes two-way communication verifying between central PLC and several branch PLC；If
Authentication is correct, then judges that communication is normal；The branch PLC of communication failure is judged as if authentication information is incorrect
Fault alarm is issued, operator stops production line after seeing fault alarm.
Two-way communication verifying method include:
Central PLC timing sends verify data to several branch PLC；The CPU scan of central PLC is primary, and verify data is certainly
Each branch PLC is sent to after dynamic+1；It is received with the last time after the verify data that each several branch PLC reception center PLC are sent
Verify data carries out comparing；
Several branch PLC timings send verify data to central PLC；When the CPU scan of several branch PLC is primary, send
Verify data automatic+1 after be sent to central PLC；Central PLC is received after the verify data that several branch PLC are sent with upper one
Secondary received verify data carries out comparing；
If the verify data received as the result is shown of comparing is different with last received verify data, judge
Communication is normal；
If the verify data received as the result is shown of comparing does not change with last received verify data,
Secondary data comparison is carried out after postponing a period of time, if secondary data comparison result is still with last verify data phase
Together, then judge that communication failure occurs in corresponding branch PLC；
The corresponding accident warning device of branch PLC for being judged as communication failure issues fault alarm, and operator sees event
Production line is stopped after barrier alarm.
The time interval that verify data is sent is 30-50ms.
The delay time that secondary data compares is 2S.
Verify data and several branch PLC timing are sent to central PLC to several branch PLC to central PLC timing below
The process for sending verify data is illustrated.
Central PLC program: (example: sending data processing)
LDB812.DBW198 loads DB812.DBW198, and to register 1, (data are that center PLC is sent to entrance PLC's
Verify data)
I+1DB812.DBW198 adds 1
=DB812.DBW198DB812.DBW198 adds 1 result to be saved in DB812.DBW198 ..., and (data send journey
Sequence is omitted)；
Branch's PLC program: (example: receiving data processing)
... (data pick program omission)
A (LDB812.DBW198 load DB812.DBW198 to register 1 (CPU present scanning cycle receive test
Card data)
L#RCVLC_OLD loads #RCVLC_OLD to register 2 (when #RCVLC_OLD is a upper CPU scan
DB812.DBW198 data)
=I two above data compare (if equal, illustrate to be not received by the newest verify data for having been added 1, and
And the following delay procedure of triggering, setting time or equal is reached, bad signal is communicated and is triggered；If differing, illustrate to connect
Receive added 1 newest verify data, not Time delay program)
=L20.0
CALLTIMER1
IN:=L20.0
PT:=T#2S
……
=COMM_NOT_OK (final signal of communication state can be used for alarming, and can be used for autostop etc.).
Claims (4)
1. a kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method, including central PLC and several branch PLC,
Connecting fault warning device on several branch PLC, it is characterised in that: built between the center PLC and several branch PLC
Vertical two-way communication verifying；If authentication is correct, judge that communication is normal；It is judged if authentication information is incorrect
Fault alarm is issued for the branch PLC of communication failure, operator stops production line after seeing fault alarm.
2. a kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method, feature exist according to claim 1
In: the method for the two-way communication verifying includes:
The center PLC timing sends verify data to several branch PLC；The CPU scan of central PLC is primary, and verify data is certainly
Each branch PLC is sent to after dynamic+1；It is received with the last time after the verify data that each several branch PLC reception center PLC are sent
Verify data carries out comparing；
Several branch PLC timings send verify data to central PLC；When the CPU scan of several branch PLC is primary, send
Verify data automatic+1 after be sent to central PLC；Central PLC is received after the verify data that several branch PLC are sent with upper one
Secondary received verify data carries out comparing；
If the verify data received as the result is shown of comparing is different with last received verify data, judge to communicate
Normally；
If the verify data received as the result is shown of comparing does not change with last received verify data, postpone
Secondary data comparison is carried out after a period of time, if secondary data comparison result is still identical with last verify data,
Judge that communication failure occurs in corresponding branch PLC；
The corresponding accident warning device of branch PLC for being judged as communication failure issues fault alarm, and operator sees failure report
Production line is stopped after police.
3. a kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method, feature exist according to claim 2
In: the time interval that the verify data is sent is 30-50ms.
4. a kind of stainless steel annealing pickling line PLC network communication diagnosis and processing method, feature exist according to claim 2
In: the delay time that the secondary data compares is 2S.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750991A (en) * | 2008-12-08 | 2010-06-23 | 中国有色（沈阳）冶金机械有限公司 | Method utilizing PLC passive station pulsation signal to judge communication status |
| CN102183946A (en) * | 2010-01-14 | 2011-09-14 | 菲尼克斯电气公司 | Method, electronic component and system for diagnosing communication connections |
| CN106094798A (en) * | 2016-07-04 | 2016-11-09 | 江苏卡威汽车研究院有限公司 | A kind of method for diagnosing faults based on CAN communication bus system |
| CN106371432A (en) * | 2016-11-23 | 2017-02-01 | 山东钢铁股份有限公司 | Fault processing method and system of continuous caster PLC system |
| CN107479539A (en) * | 2017-09-15 | 2017-12-15 | 郑州众智科技股份有限公司 | PLC and monitoring software Communications failure a kind of detection method |
| CN107479531A (en) * | 2017-07-31 | 2017-12-15 | 杭州电子科技大学 | The access device communication protocol frame format information of Embedded PLC remotely determines method |
-
2019
- 2019-06-13 CN CN201910510571.2A patent/CN110205479A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750991A (en) * | 2008-12-08 | 2010-06-23 | 中国有色（沈阳）冶金机械有限公司 | Method utilizing PLC passive station pulsation signal to judge communication status |
| CN102183946A (en) * | 2010-01-14 | 2011-09-14 | 菲尼克斯电气公司 | Method, electronic component and system for diagnosing communication connections |
| CN106094798A (en) * | 2016-07-04 | 2016-11-09 | 江苏卡威汽车研究院有限公司 | A kind of method for diagnosing faults based on CAN communication bus system |
| CN106371432A (en) * | 2016-11-23 | 2017-02-01 | 山东钢铁股份有限公司 | Fault processing method and system of continuous caster PLC system |
| CN107479531A (en) * | 2017-07-31 | 2017-12-15 | 杭州电子科技大学 | The access device communication protocol frame format information of Embedded PLC remotely determines method |
| CN107479539A (en) * | 2017-09-15 | 2017-12-15 | 郑州众智科技股份有限公司 | PLC and monitoring software Communications failure a kind of detection method |
Non-Patent Citations (1)
| Title |
|---|
| 赵伟艇: "《TCP/IP网络基础》", 31 August 2008, 河南科学技术出版社 * |
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Application publication date: 20190906 |