CN108809784A - A kind of bus apparatus interception system and method - Google Patents
A kind of bus apparatus interception system and method Download PDFInfo
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- CN108809784A CN108809784A CN201810581164.6A CN201810581164A CN108809784A CN 108809784 A CN108809784 A CN 108809784A CN 201810581164 A CN201810581164 A CN 201810581164A CN 108809784 A CN108809784 A CN 108809784A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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Abstract
This application discloses a kind of bus apparatus interception system and methods, including：DP main websites, the communication packet of the DP slave stations for obtaining the DP main websites second line of a couplet, and communication packet is sent to bus control system；Bus control system parses communication packet, obtains the fault message of DP slave stations for receiving communication packet；The application obtains the communication packet of DP slave stations using DP main websites, and communication packet is sent to bus control system, communication packet is parsed by bus control system again, the fault message of DP slave stations is obtained, to complete the malfunction elimination to DP slave stations, it is no longer necessary to extras auxiliary intercept, improve fault detection efficiency, failure can be found in time, without arranging special bus diagnostic equipment, reduce maintenance cost.
Description
Technical field
The present invention relates to the bus apparatus communications field, more particularly to a kind of bus apparatus interception system and method.
Background technology
Along with extensive application of the field bus device in industrial bus control system, the difficulty of fieldbus debugging is got over
It more protrudes, at present encounters problems in the debugging and maintenance of field bus system, need to remove cabinet on the spot with detectaphone mostly
It is analyzed with equipment crawl data, higher to the skill set requirements of maintenance personnel, also cumbersome, use site bus debugs work
Tool has the following problems：It is expensive first, a fieldbus snooping equipment is differed 20,000-3 ten thousand, and fieldbus is intercepted
Equipment is very enervated, since power supply terminal and the communications line terminal of field bus device are very close in equipment end distance,
The careless slightly forceful electric power that will overlap causes fieldbus snooping equipment to burn, and fieldbus snooping equipment can not generally be repaiied after burning
It is multiple, so accomplishing that all service engineer's human hands are a set of like that without the common maintenance tool of normal direction, cause in large scale system tune
Since commissioning device shortage can cause the reduction of working efficiency during examination；Secondly as function restriction, the feedback of special equipment
It is not friendly enough, it is necessary to which that the maintenance personnel by having received professional training carries out the deciphering of failure code, and therefore, operations staff has found failure
Afterwards, it need to first notify that service personnel is faulty, specific purpose tool then be held by service personnel, scene is gone to find failure cause and failure
Equipment can extend the defect elimination time of bus apparatus if service personnel can not quickly arrive at fault in-situ；Third works as bus
After control system finds that bus signals go wrong, it is necessary to fieldbus debugging acid come fault point, and can not be fast
The orientation problem of speed.
Therefore, it is necessary to a kind of equipment that can efficiently position bus failure.
Invention content
In view of this, it is an object of the invention to provide a kind of bus apparatus by expansion bus control system function to detect
System and method is listened, bus failure can be efficiently positioned.Its concrete scheme is as follows：
A kind of bus apparatus interception system, including：
DP main websites, the communication packet of the DP slave stations for obtaining the DP main websites second line of a couplet, and send the communication packet extremely
Bus control system；
The bus control system, for by receiving the communication packet, parsing the communication packet, obtaining the DP
The fault message of slave station.
Optionally, the bus control system is additionally operable to compare information using preset transfer, the fault message is turned
It is changed to the translation fault message of natural language form.
Optionally, further include：
The DP main websites, the data message for obtaining the DP slave stations, and the data message is sent to bus marco
System；
The bus control system parses the data message and obtains the DP slave stations for receiving the data message
Status information.
Optionally, the bus control system is additionally operable to receive device status inquiries request input by user, call DP from
The status information stood.
Optionally, the bus control system is specifically used for receiving the communication packet, judges the communication packet
Communication type chooses the communication data for meeting communication packet described in the bus line of preset condition using the communication type,
It is compareed with the Fault analytical information being generated in advance using the communication data, obtains the fault message.
Optionally, the bus control system is specifically used for receiving the communication packet, whether judges the communication packet
For SR redundant modes, if it is, judging that the communication type is double DP bus communication types, if it is not, then judging described lead to
Interrogate whether message is DP bus communication types, if it is, the communication type is judged for single DP bus communications type, if
It is no, then judge the communication type for single PA types；
If the communication type is non-double DP bus communications types, the upper of communication data described in bus line is judged
It reports quality whether qualified, if it is, being compareed with the Fault analytical information using the communication data, obtains the event
Hinder information；
If the communication type is double DP bus communication types, judge whether dual bus circuit is online；
If it is not, then using the up-to-standard communication data and the Fault analytical is reported in online bus line
Information is compareed, and the fault message is obtained；
If it is, judging to report quality whether qualified；
If it is, being believed with the Fault analytical using the communication data in the selection selected bus line of history
Breath is compareed, and the fault message is obtained；
If it is not, then utilizing the communication data reported in up-to-standard bus line and the Fault analytical information
It is compareed, obtains the fault message.
The invention also discloses a kind of bus apparatus intercepting methods, including：
The communication packet that the DP slave stations of the DP main websites second line of a couplet are obtained using DP main websites, is parsed the communication packet, obtained
The fault message of the DP slave stations.
Optionally, the parsing communication packet, obtains the process of the fault message of the DP slave stations, including：
Judge the communication type of the communication packet；
The communication data for meeting communication packet described in the bus line of preset condition is chosen using the communication type；
It is compareed with the Fault analytical information being generated in advance using the communication data, obtains the fault message.
Optionally, described to judge that the process of the communication type of the communication packet includes：
Judge whether the communication packet is SR redundant modes；
If it is, judging that the communication type is double DP bus communication types；
If it is not, then judging whether the communication packet is DP bus communication types；
If it is, judging the communication type for single DP bus communications type；
If it is not, then judging the communication type for single PA types.
Optionally, described to meet communication packet described in the bus line of preset condition using communication type selection
The process of communication data includes：
When the communication type is non-double DP bus communications types, then judge communication data in bus line reports quality
It is whether qualified；
If it is, choosing communication data in the bus line；
When the communication type is double DP bus communication types, then judge whether dual bus circuit is online；
Up-to-standard communication data is reported if it is not, then choosing in online bus line；
If it is, whether judge communication data in dual bus circuit reports quality qualified；
If it is, using communication data and the Fault analytical information in the selection selected bus line of history into
Row control, obtains the fault message；
If it is not, then being carried out using the communication data reported in up-to-standard bus line and the Fault analytical information
Control, obtains the fault message.
In the present invention, bus apparatus interception system, including：DP main websites, for obtain the DP main websites second line of a couplet DP slave stations it is logical
Message is interrogated, and sends communication packet to bus control system；Bus control system, for by receiving communication packet, parsing to be logical
Message is interrogated, the fault message of DP slave stations is obtained；The present invention obtains the communication packet of the DP slave stations of its second line of a couplet using DP main websites, concurrently
It send communication packet to bus control system, then communication packet is parsed by bus control system, obtain the fault message of DP slave stations, from
And complete the malfunction elimination to DP slave stations, it is no longer necessary to which extras auxiliary intercept improves fault detection efficiency, can be timely
It was found that failure, without arranging special bus diagnostic equipment, reduction to maintain cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of bus apparatus interception system structural schematic diagram disclosed by the embodiments of the present invention；
Fig. 2 is a kind of bus apparatus intercepting method flow diagram disclosed by the embodiments of the present invention；
Fig. 3 is a kind of bus apparatus intercepting method flow diagram disclosed by the embodiments of the present invention；
Fig. 4 is a kind of bus apparatus intercepting method flow diagram disclosed by the embodiments of the present invention；
Fig. 5 is a kind of bus apparatus intercepting method flow diagram disclosed by the embodiments of the present invention；
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Shown in Figure 1 the embodiment of the invention discloses a kind of bus apparatus interception system, which includes DP main websites 1
(DP, PROFIBUS-DP), the communication packet of the DP slave stations for obtaining the DP main websites second line of a couplet, and communication packet is sent to total line traffic control
System 2 processed；Bus control system 2, for by receiving communication packet, parsing communication packet, obtaining the fault message of DP slave stations.
Specifically, DP main websites 1 have control Receive message function while, integrated communication Receive message function so that
DP main websites 1 can directly acquire the communication packet of DP slave stations, then communication packet is sent to bus control system 2 by DP main websites 1,
Bus control system 2 parses function by integrated communication data, parses communication data, obtains the failure letter with ALCL Assembly Line Communication Link equipment
Breath；DP main websites 1 are used as general module, and price is relatively cheap, while onsite application amount is larger, are designed with fairly perfect isolation and protect
Circuit is protected, avoids master station module to a certain extent the case where being burned out after forceful electric power seals in, meanwhile, by field bus system
Application and field bus system debugging combine the failure cause that can quickly find bus system, avoid because of scene
Bus system and debugging separate, and are unfavorable for quickly investigating and solving the problems, such as in normal productive process；And bus control system 2 collects
The parsing function of pairs of communication packet, it is no longer necessary to which individual equipment parses communication packet, is done directly by bus control system
Parsing to communication packet, obtains the fault message of DP slave stations, and more convenient be quickly presented to fault message safeguards people
Member, improves fault detection efficiency.
It is understood that bus control system 2 can be connect with N number of DP main websites 1, N is positive integer, each DP main websites 1
Multiple DP slave stations can also be corresponded to, bus control system 2 can receive the communication packet that different DP main websites 1 are sent, obtain simultaneously
The fault message of multiple DP slave stations corresponding with each DP main websites 1；Wherein, DP slave stations are the bus apparatus with diagnosis.
It should be noted that DP main websites 1 are common apparatus, at low cost, usage amount is big, and is designed with more perfect isolation and protects
Circuit is protected, can be avoided to a certain extent the phenomenon that being burnt after forceful electric power seals in.
As it can be seen that in the embodiment of the present invention, the communication packet of the DP slave stations of its second line of a couplet is obtained using DP main websites 1, and is sent logical
It interrogates message and parses communication packet to bus control system 2, then by bus control system 2, obtain the fault message of DP slave stations, to
Complete the malfunction elimination to DP slave stations, it is no longer necessary to which extras auxiliary intercept improves fault detection efficiency, can send out in time
Existing failure reduces maintenance cost without arranging special bus diagnostic equipment.
Wherein, the communication state of bus is divided into bus network communication state and bus apparatus communication state two parts, bus
Network communication state is used to reflect the network connection state of bus apparatus, and the network connection state of bus apparatus includes bus apparatus
With the connection status of the connection status and bus apparatus and bus control system 2 of communication apparatus, bus apparatus communication state is used for
Reflect the working condition of the DP chips on bus apparatus, it is therefore desirable to be completed at the same time to bus network communication state in communication packet
Parsing with bus apparatus communication state can just obtain the fault message with ALCL Assembly Line Communication Link equipment.
Specifically, diagnostic data structure can be defined according to functional requirement, for example, DP03-SR pattern meter status judges
According to DP standard diagnostics data totally 6 bytes, wherein the explanation of every data can refer in each byte, the 1st byte explanation
Table to the 6th byte illustrates table.
1st byte illustrates table
2nd byte illustrates table
| Bit | Explanation | Meaning |
| Bit0 | Prm_Req | Slave station needs parameter initialization again |
| Bit1 | Statistical_Diagnose | It is diagnosed into Statistical |
| Bit2 | It is fixed as 1 | / |
| Bit3 | WD_On | Corresponding enabling dog function activation |
| Bit4 | Freeze_Mode | It obtains entering Freeze status commands |
| Bit5 | Sync_Mode | It obtains entering Sync status commands |
| Bit6 | It is fixed as 0 | / |
| Bit7 | Deactivated |
3rd byte illustrates table
| Bit | Explanation | Meaning |
| Bit0~Bit6 | Retain | / |
| Bit7 | Ext_Diag_Overflow | Diagnostic message is excessive |
4th byte illustrates table
5th and the 6th byte illustrates table
| Bit | Explanation | Meaning |
| Bit8~bit15 | Slave station ID high bytes | / |
| Bit0~Bit7 | Slave station ID low bytes | / |
It is understood that DP main websites 1, can be also used for the data message for obtaining DP slave stations, and send datagram to
Bus control system 2；Bus control system 2 then can be also used for receiving data message, and parsing data message obtains DP slave stations
Status information；Data message includes the information such as operating status, malfunction, electric current, voltage and the power of bus apparatus；Bus
Control system 2 can regulate and control the operating status of bus apparatus using the status information of bus apparatus, bus control system 2
It can be central control computer.
Wherein, DP main websites 1 also receive the communication packet and/or data message of the transmission of bus control system 2 when non-diagnostic,
DP slave stations are transmitted under and, meanwhile, bus control system 2 can also be handled the status information of bus apparatus by inner control logic
After generate control instruction, then by DP main websites 1 send control message to bus apparatus, to drive field bus device.
The embodiment of the invention discloses a kind of specific bus apparatus interception systems, relative to a upper embodiment, this implementation
Example has made further instruction and optimization to technical solution.Specifically：
In the embodiment of the present invention, above-mentioned bus control system, specific resolving includes connecing after receiving communication packet
Communication packet is received, judges the communication type of communication packet, is met in the bus line of preset condition using communication type selection
The communication data of communication packet is compareed with the Fault analytical information being generated in advance using communication data, obtains fault message.
Specifically, since the possible model of bus apparatus or operating condition are different, DP main websites are uploaded to bus control system
The communication type of communication packet may also be different, while when bus apparatus is dual bus parallel running, transmitted in two buses
There is identical communication data, at this point, the communication packet that bus control system receives includes two parts of identical communication datas, because
This needs the communication type for judging communication packet during bus control system parses communication packet, to use phase
It answers the analysis program of type to parse communication packet, needs to remove from communication packet by the communication data of redundancy, selection meets pre-
If the communication data of condition, recycles the Fault analytical information being generated in advance to be compareed with communication data, obtain fault message, it can be with
Understand, Fault analytical information be generated in advance the data for having mapping relations are established with each data in communication data, therefore,
It is compareed with communication data by Fault analytical information, the fault message in communication data can be parsed.
Further, above-mentioned bus control system includes judging to the resolving of communication packet after receiving communication packet
Whether communication packet is SR redundant modes, by judging whether communication packet is SR redundant modes, it can be determined that be monobus also
It is dual bus；If it is, judgement communication type is double DP bus communication types；If it is not, then judge communication packet whether be
DP bus communication types；If it is, judgement communication type is single DP bus communications type；If it is not, then judgement communication type
For single PA types；By further judging to may determine that the specific communication type of communication packet, such as double DP bus communication classes
Type, list DP bus communications type or list PA types.
Specifically, after completing to the judgement of the communication type of communication packet, need to choose satisfaction from bus line in advance
If the communication data of condition, if communication type is non-double DP bus communications types, that is, single DP bus communications type or list PA classes
Type is then shown to be monobus, only a bus line transmission communication message, therefore directly judges communication data in bus line
Report quality whether qualified, if it is, being compareed with Fault analytical information using communication data, obtain fault message；
And if communication type is double DP bus communication types, it is shown to be dual bus, need to judge whether dual bus circuit is online, such as
The no only bus line of fruit is online, then using reporting up-to-standard communication data and failure solution in online bus line
Analysis information is compareed, and fault message is obtained, online if it is dual bus circuit, then judges to communicate in dual bus circuit respectively
Whether data report quality qualified；If it is, using selection the selected bus line of history in communication data with
Fault analytical information is compareed, and fault message is obtained, wherein the selected bus line of history is once selected logical before being
Interrogate the bus line of data；If it is not, then being believed using the communication data reported in up-to-standard bus line and Fault analytical
Breath is compareed, and fault message is obtained.
It is understood that when no bus line it is online, report the underproof situation of quality not to communication packet into
Row parsing.
Wherein, it can reflect DP slave stations fault message mainly according to the first diagnosis byte and second opinion for being communication packet
The specifying information of byte, the first diagnosis byte and second opinion byte can illustrate table and the 2nd byte with reference to the 1st byte above-mentioned
Illustrate table, Fault analytical information corresponding with the first diagnosis byte and second opinion byte can parse information table with Fisrt fault
It is expressed with the form of the second Fault analytical information table.
Fisrt fault parses information table
Second Fault analytical information table
| Bit | Explanation | Meaning | |
| ARRAY[7] | Bit0 | Prm_Req | Slave station needs parameter initialization again |
| ARRAY[8] | Bit1 | Statistical_Diagnose | It is diagnosed into Statistical |
| Bit2 | |||
| ARRAY[9] | Bit3 | WD_On | Corresponding enabling dog function activation |
| ARRAY[10] | Bit4 | Freeze_Mode | It obtains entering Freeze status commands |
| ARRAY[11] | Bit5 | Sync_Mode | It obtains entering Sync status commands |
| Bit6 | |||
| Bit7 |
Further, bus control system can be also used for receiving device status inquiries request input by user, call DP
The status information of slave station；User can check the status information of bus apparatus or redundant bus equipment by bus control system；
Bus control system can be also used for compareing information using preset transfer, fault message be converted to natural language form
Fault message is translated, information is compareed by pre-establishing the transfer corresponding with fault message being made of natural language, by reflecting
It penetrates relationship and various failure codes in fault message is translated as corresponding natural language in transfer control information, obtain natural language
The translation fault message of form, enables user that can quickly learn guilty culprit.
Shown in Figure 2 the embodiment of the invention also discloses a kind of bus apparatus intercepting method, this method includes：
S1：The communication packet of the DP slave stations of the DP main websites second line of a couplet is obtained using DP main websites；
S2：Communication packet is parsed, the fault message of DP slave stations is obtained.
As it can be seen that in the embodiment of the present invention, bus control system obtains the logical of the DP slave stations of the DP main websites second line of a couplet using DP main websites
Message is interrogated, and sends communication packet and parses communication packet to bus control system, then by bus control system, obtains DP slave stations
Fault message, to complete the malfunction elimination to DP slave stations, it is no longer necessary to which extras auxiliary intercept improves fault detect effect
Rate can find failure in time, without arranging special bus diagnostic equipment, reduce maintenance cost.
Specifically, shown in Figure 3, above-mentioned S2 parses communication packet, obtains the process of the fault message of DP slave stations, can be with
Specifically include step S21 to S23；
S21：Judge the communication type of communication packet；
S22：The communication data of communication packet in the bus line for meeting preset condition is chosen using communication type；
S23：It is compareed with the Fault analytical information being generated in advance using communication data, obtains fault message.
Further, shown in Figure 4, above-mentioned S21 judges that the process of the communication type of communication packet can be wrapped specifically
Include step S211 to S215；
S211：Judge whether communication packet is SR redundant modes；
S212：If it is, judgement communication type is double DP bus communication types；
S213：If it is not, then judging whether communication packet is DP bus communication types；
S214：If it is, judgement communication type is single DP bus communications type；
S215：If it is not, then judgement communication type is single PA types.
Wherein, shown in Figure 5, above-mentioned S22 is chosen in the bus line for meeting preset condition using communication type and is communicated
The process of the communication data of message can specifically include step S221 to S227；
S221：When communication type is non-double DP bus communications types, then judge communication data in bus line reports matter
Whether amount is qualified；
S222：If it is, choosing communication data in bus line；
S223：When communication type is double DP bus communication types, then judge whether dual bus circuit is online；
S224：Up-to-standard communication data is reported if it is not, then choosing in online bus line；
S225：If it is, whether judge communication data in dual bus circuit reports quality qualified；
S226：If it is, utilizing communication data and Fault analytical information in the selection selected bus line of history
It is compareed, obtains fault message；
S227：If it is not, then using the communication data that reports in up-to-standard bus line and Fault analytical information into
Row control, obtains fault message.
In the embodiment of the present invention, preset transfer can also be utilized to compare information, fault message is converted into natural language
The translation fault message of form；DP main websites can certainly be utilized to obtain the data message of DP slave stations, parsing data message obtains
The status information of DP slave stations；Device status inquiries request input by user can also be received simultaneously, call the state letter of DP slave stations
Breath.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
A kind of bus apparatus interception system provided by the present invention and method are described in detail above, answered herein
With specific case, principle and implementation of the present invention are described, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention,
There will be changes in specific implementation mode and application range, in conclusion the content of the present specification should not be construed as to this hair
Bright limitation.
Claims (10)
1. a kind of bus apparatus interception system, which is characterized in that including：
DP main websites, the communication packet of the DP slave stations for obtaining the DP main websites second line of a couplet, and the communication packet is sent to bus
Control system bus control system；
The bus control system obtains described waiting diagnosing for by receiving the communication packet, parsing the communication packet
The fault message of bus apparatus.
2. bus apparatus interception system according to claim 1, which is characterized in that the bus control system is additionally operable to
Information is compareed using preset transfer, the fault message is converted to the translation fault message of natural language form.
3. bus apparatus interception system according to claim 1, which is characterized in that further include：
The DP main websites, the data message for obtaining the DP slave stations, and the data message is sent to bus marco system
System；.
The bus control system parses the data message and obtains the shape of the DP slave stations for receiving the data message
State information.
4. bus apparatus interception system according to claim 3, which is characterized in that the bus control system is additionally operable to
Device status inquiries request input by user is received, the status information of the DP slave stations is parsed.
5. bus apparatus interception system according to claim 1, which is characterized in that the bus control system, it is specific to use
In receiving the communication packet, the communication type of the communication packet is judged, choose to meet using the communication type and preset
The communication data of communication packet described in the bus line of condition is believed using the communication data and the Fault analytical being generated in advance
Breath is compareed, and the fault message is obtained.
6. bus apparatus interception system according to claim 5, which is characterized in that the bus control system, it is specific to use
In receiving the communication packet, judge whether the communication packet is SR redundant modes, if it is, judging the communication type
For double DP bus communications types, if it is not, then judging whether the communication packet is DP bus communication types, if it is, sentencing
The fixed communication type is list DP bus communication types, if it is not, then judging the communication type for PA types；
If the communication type is non-double DP bus communications types, judge communication data described in bus line reports matter
Whether amount is qualified, if it is, being compareed with the Fault analytical information using the communication data, obtains the failure letter
Breath；
If the communication type is double DP bus communication types, judge whether dual bus circuit is online；
If it is not, then using the up-to-standard communication data and the Fault analytical information is reported in online bus line
It is compareed, obtains the fault message；
If it is, judging to report quality whether qualified；
If it is, using the communication data and the Fault analytical information in the selection selected bus line of history into
Row control, obtains the fault message；
If it is not, then being carried out using the communication data reported in up-to-standard bus line and the Fault analytical information
Control, obtains the fault message.
7. a kind of bus apparatus intercepting method, which is characterized in that including：
The communication packet that the DP slave stations of the DP main websites second line of a couplet are obtained using DP main websites, parses the communication packet, obtains described
The fault message of DP slave stations.
8. bus apparatus intercepting method according to claim 7, which is characterized in that the parsing communication packet obtains
To the process of the fault message of the DP slave stations, including：
Judge the communication type of the communication packet；
The communication data for meeting communication packet described in the bus line of preset condition is chosen using the communication type；
It is compareed with the Fault analytical information being generated in advance using the communication data, obtains the fault message.
9. bus apparatus intercepting method according to claim 8, which is characterized in that described to judge the communication packet
The process of communication type includes：
Judge whether the communication packet is SR redundant modes；
If it is, judging that the communication type is double DP bus communication types；
If it is not, then judging whether the communication packet is DP bus communication types；
If it is, judging the communication type for single DP bus communications type；
If it is not, then judging the communication type for single PA types.
10. bus apparatus intercepting method according to claim 9, which is characterized in that described to be selected using the communication type
The process for the communication data for meeting communication packet described in the bus line of preset condition is taken to include：
When the communication type is non-double DP bus communications types, then whether judge communication data in bus line reports quality
It is qualified；
If it is, choosing communication data in the bus line；
When the communication type is double DP bus communication types, then judge whether dual bus circuit is online；
Up-to-standard communication data is reported if it is not, then choosing in online bus line；
If it is, whether judge communication data in dual bus circuit reports quality qualified；
If it is, being carried out pair using communication data and the Fault analytical information in the selection selected bus line of history
According to obtaining the fault message；
If it is not, then being carried out pair using the communication data that reports in up-to-standard bus line and the Fault analytical information
According to obtaining the fault message.
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