CN110138581A - CAN bus ID number configuration method - Google Patents
CAN bus ID number configuration method Download PDFInfo
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- CN110138581A CN110138581A CN201810140452.8A CN201810140452A CN110138581A CN 110138581 A CN110138581 A CN 110138581A CN 201810140452 A CN201810140452 A CN 201810140452A CN 110138581 A CN110138581 A CN 110138581A
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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
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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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
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention discloses a kind of CAN bus ID number configuration method and configuration device, method includes the following steps: arranging multiple physical switch as CAN bus ID number switch；Basic ID number is obtained according to the on off operating mode of the physical switch；It, should according to current ID number and functional meaning described in the Relation acquisition between the mapping relations and the offset of preset function and offset, the basic ID number, current ID number.This solves the problems such as debugging of CAN bus device context and inconvenient installation.
Description
Technical field
The present invention relates to CAN bus technical field, especially a kind of CAN bus ID number configuration method.
Background technique
CAN bus has largely used in industrial trade as a kind of efficient industrial field bus, the number in bus
The form of message is transmitted accordingly.Agreement in bus is varied, and the ID number of each message is then to discriminate between distinct device
Different information unique identification.It is mostly at present following two for the configuration method of ID number:
1) fixed after product export, user can not modify；Since fixed ID number is upgraded or is increased in equipment
New equipment would be possible to conflicting before, therefore, device upgrade or while increasing new equipment, need to modify ID number, by party in request with
Production firm links up and modifies, and is completely dependent on production firm, is more troublesome；
2) product is connected by other equipment, programming is carried out to the ID number of product by way of in line writing；More finish changing
ID number product no power it is not sent cross CAN bus message in the case where can not know replacement after ID number, it has not been convenient to use,
Such as: A engineer has changed ID number, but does not keep a record.B engineer can not just learn current ID number.Thus can not be quick
Enter test or use state.CAN bus online monitoring instruments must be used to check current ID number, and in bus
ID number is very more, it may be necessary to which modified ID can just be found by slowly searching from several hundred a ID.
3) it is configured by CAN bus equipment, needs dedicated equipment, and it is also possible to produce with other communications protocol
Raw conflict.
Summary of the invention
The present invention provides a kind of CAN bus ID number configuration method and configuration device, for overcoming CAN bus in the prior art
The defects of device context debugging and inconvenient installation, improves the convenience of the debugging of CAN bus device context and installation.
To achieve the above object, the present invention proposes a kind of CAN bus ID number configuration method, method includes the following steps:
Multiple physical switch are arranged as CAN bus ID number switch；
Basic ID number is obtained according to the on off operating mode of the physical switch；
According to the mapping relations and the offset of preset function and offset, the basic ID number, current ID number
Between Relation acquisition described in current ID number and functional meaning.
To achieve the above object, the present invention also proposes a kind of CAN bus ID number configuration device, comprising:
CAN bus ID number switch, including the multiple physical switch being arranged；
Basic ID number obtains module, for obtaining basic ID number according to the on off operating mode of the physical switch；
Current ID number obtains module, for according to the mapping relations of preset function and offset and the offset,
Current ID number and functional meaning described in Relation acquisition between the basis ID number, current ID number.
CAN bus ID number configuration method and configuration device provided by the invention, by the ID number of message be divided into basic ID number and
Offset two parts, basic ID number are obtained by the on off operating mode of physical switch, and offset passes through known function and offset
Mapping relations i.e. to specific function carry out preset value acquisition, sum of the two is exactly current ID number；ID number can be by user
Situ configuration, manufacturer are not necessarily to produce unused model because of bus message difference for the product of identical function.Scene is logical
The state for crossing change physical switch can directly modify equipment and send the ID number of message, to distinguish different equipment, realize function
The switching of energy.The meaning according to representated by physical switch can be apparent from message number transmitted by current device, improve
The convenience of the debugging of CAN bus device context and installation.
Detailed description of the invention
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 technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the flow chart for the CAN bus ID number configuration method that the embodiment of the present invention one provides；
Fig. 2 is the flow chart of CAN bus ID number configuration method provided by Embodiment 2 of the present invention；
Fig. 3 is the status diagram of dial switch represented by serial number 2 in the embodiment of the present invention two；
Fig. 4 is the structural block diagram for the CAN bus ID number configuration device that the embodiment of the present invention one provides；
Fig. 5 is the structural block diagram of CAN bus ID number configuration device provided by Embodiment 2 of the present invention；
Fig. 6 is the circuit diagram of CAN bus ID number configuration device provided by Embodiment 2 of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 1 | CAN bus ID number switch | 22 | Switch state assignment unit |
| 11 | Physical switch | 3 | Current ID number obtains module |
| 12 | Encoder | 31 | Offset-function map unit |
| 2 | Basic ID number obtains module | 32 | Current ID number acquiring unit |
| 21 | Switching sequence assignment unit | 33 | Function describes acquiring unit |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
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 description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In the description of the present invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
It in addition, the technical solution between each embodiment of the present invention can be combined with each other, but must be general with this field
Based on logical technical staff can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve this
The combination of technical solution is not present, also not the present invention claims protection scope within.
The present invention proposes a kind of CAN bus ID number configuration method.Embodiment:
Please refer to Fig. 1 to Fig. 4, in an embodiment of the present invention, CAN bus ID number configuration method the following steps are included:
Step S1 arranges multiple physical switch as CAN bus ID number switch；Here physical switch refers to manually
The switch of control can be an independent switch, and it is side-by-side to be also possible to multiple switch, such as toggle switch.
If needing multiple using individually switch, it is each switch number, and puts in order according to number；If
Using toggle switch, there are many models it can be selected that such as 6,8,10, is arranged according to the number of switch
Column.Referring to Fig. 1, Fig. 2.
Step S2 obtains basic ID number according to the on off operating mode of the physical switch；
In an embodiment of the present invention, the on off operating mode of the physical switch is detected first and state parameter is set, according to
Precedence number, the state parameter of the physical switch and the preset computation rule of the physical switch obtain basic ID number；
Such as: it detects the on off operating mode of each physical switch and state parameter (such as 1 table of the state parameter of connection is set
Show, the state parameter of disconnection is indicated with 0), (such as first is from left to right arranged according to the precedence of physical switch number
Precedence number be 1, be arranged in that deputy precedence number is 2, to be arranged in the precedence number of third position be 3, and so on, row
The precedence number for being listed in N is N), the state parameter of the physical switch and preset computation rule obtain basic ID number.
Here computation rule be the precedence number of physical switch, physical switch state parameter and basic ID number between mathematical relationship
Formula, every equipment indicate that the different basic ID number of different device configurations, computation rule can satisfy not with a basic ID number
With physical switch on off operating mode (permutation and combination that state parameter can be regarded as) calculate the basic ID number obtained be it is unique,
It cannot be overlapped.
Step S3, according to the mapping relations and the offset of preset function and offset, the basic ID number, when
Current ID number and functional meaning described in Relation acquisition between preceding ID number.
Such as the mapping relations of preset function and offset are as follows:
Deviant 0 indicates the state of device keys；
Deviant 1 indicates the state of equipment indicating lamp；
Such as the relationship between basic ID number, current ID number are as follows:
Basic ID number is equal to current ID number plus offset；
Here current ID number refers to the ID number configured under physical switch current state, when one of physical switch
When state changes, current ID number will change.Describing ID number jointly by basic ID number and function offset indicates
Function.
Basic ID number is identical, indicates the same equipment, function offset is for the report as the same equipment different function
The ID number of text is distinguished.
Wherein:
Step S1 includes:
Step S11 arranges multiple physical switch according to tandem；
1~N is numbered according to tandem for multiple physical switch in step S12, and wherein N is just whole greater than 1
Number.
Assuming that the physical switch configured using 8 toggle switch as Equipment Foundations ID number.There is 1-8 totally 8 on toggle switch
A switch, particular state is referring to following table:
| Serial number | Switch number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1 | Switch state | ON | OFF | OFF | OFF | OFF | OFF | OFF | OFF |
| 2 | Switch state | ON | OFF | OFF | OFF | OFF | OFF | OFF | ON |
| 3 | Switch state | OFF | OFF | ON | OFF | OFF | ON | OFF | OFF |
| 4 | Switch state | ON | OFF | OFF | OFF | OFF | ON | OFF | OFF |
| 5 | Switch state | OFF | OFF | OFF | OFF | ON | OFF | OFF | ON |
| 6 | Switch state | ON | OFF | OFF | OFF | OFF | OFF | ON | OFF |
Step S2 step includes:
Step S21, the physical switch for being 1~N to number respectively correspond assignment 20~2N-1；
Step S22, if the physical switch is on-state, state parameter M is 1, if the physical switch is
Off-state, then state parameter M is 0, MNIndicate the state for the physical switch that number is N；
Then basic ID number A1=(20×M1+21×M2+22×M3+23×M4+…+2N-1×MN)×N。
No. 1-8 other assignment 2 of switch0, 21, 22, 23, 24, 25, 26, 27.Present bit numerical value × 1 is represented when switch pushes ON,
Present bit numerical value × 0 is represented when OFF.Basic ID number be each switch representated by numerical value be added and × 8.
Basic ID number under serial number 1 are as follows:
A1=(20×1+21×0+22×0+23×0+24×0+25×0+26×0+27× 0) × 8=8；
Basic ID number under 2 state of serial number are as follows:
A2=(20×1+21×0+22×0+23×0+24×0+25×0+26×0+27× 1) × 8=1088；
Basic ID number under 3 state of serial number are as follows:
A3=(20×0+21×0+22×1+23×0+24×0+25×1+26×0+27× 0) × 8=288；
Basic ID number under 4 state of serial number are as follows:
A4=(20×1+21×0+22×0+23×0+24×0+25×1+26×0+27× 0) × 8=264；
Basic ID number under 5 state of serial number are as follows:
A5=(20×0+21×0+22×0+23×0+24×1+25×0+26×0+27× 1) × 8=1152；
Basic ID number under 6 state of serial number are as follows:
A6=(20×1+21×0+22×0+23×0+24×0+25×0+26×1+27× 0) × 8=520.
Step S3 includes:
Step S31, default bias amount PiCorresponding function is pi, i is the particular number of the function, PiFor numerical value, piFor
Function description；
Do following regulation:
| Deviant | Function description |
| 0 | The state of device keys |
| 1 | The state of equipment indicating lamp |
Step S32 obtains the current ID number A according to the relationship between current ID number, basic ID number and offset；When
Preceding ID number A=A1+Pi；
Step S33, the offset P for being included according to the current ID number AiAnd the mapping of the offset and function
Relationship, the functional meaning for obtaining the current ID number is piThe function of expression describes；
1 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
8 indicate the state of current device key；
9 indicate the state of current device indicator light.
2 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
1088 indicate the state of current device key；
1089 indicate the state of current device indicator light.
3 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
288 indicate the state of current device key；
289 indicate the state of current device indicator light.
4 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
264 indicate the state of current device key；
265 indicate the state of current device indicator light.
5 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
1052 indicate the state of current device key；
1053 indicate the state of current device indicator light.
6 equipment of serial number is sent to the meaning of the message ID of bus are as follows:
520 indicate the state of current device key；
521 indicate the state of current device indicator light.
The above method, ID number can be not necessarily to the product for identical function because total by user's situ configuration, manufacturer
Report from a liner text is different and produces unused model.Without any tool, scene can directly be repaired by changing the state of physical switch
Change the ID number that equipment sends message.To distinguish different equipment, the switching of function is realized.Contained according to representated by physical switch
Justice can be apparent from message number transmitted by current device in the case where not needing any equipment.For field adjustable
And installation provides convenience.
The present invention also provides a kind of CAN bus ID number configuration devices, specifically include: CAN bus ID number switch 1, basis
ID number obtains module 2 and current ID number obtains module 3；CAN bus ID number switch 1, multiple physics including being arranged are opened
Close 11；CAN bus ID number switch 1 in the present embodiment uses toggle switch；Physical switch on toggle switch is according to row
Column sequence is numbered.Here physical switch refers to the switch manually controlled, can be an independent switch, can also be with
It is that multiple switch is side-by-side, such as toggle switch.The circuit diagram of CAN bus ID number configuration device is referring to Fig. 6, basic ID number
It obtains module 2 and current ID number obtains the resistance element for the determination level that module 3 is toggle switch periphery.
If needing multiple using individually switch, it is each switch number, and puts in order according to number；If
Using toggle switch, there are many models it can be selected that such as 6,8,10, is arranged according to the number of switch
Column.Referring to Fig. 1, Fig. 2.
Basic ID number obtains module 2, for obtaining basic ID number according to the on off operating mode of the physical switch 11；Basic ID
Number obtaining module 2 acquires the number and on off operating mode parameter of each physical switch, and obtains according to the calculating of preset operation rule
Take basic ID number；
In an embodiment of the present invention, the on off operating mode of the physical switch is detected first and state parameter is set, according to
Precedence number, the state parameter of the physical switch and the preset computation rule of the physical switch obtain basic ID number；
Such as: it detects the on off operating mode of each physical switch and state parameter (such as 1 table of the state parameter of connection is set
Show, the state parameter of disconnection is indicated with 0), (such as first is from left to right arranged according to the precedence of physical switch number
Precedence number be 1, be arranged in that deputy precedence number is 2, to be arranged in the precedence number of third position be 3, and so on, row
The precedence number for being listed in N is N), the state parameter of the physical switch and preset computation rule obtain basic ID number.
Here computation rule be the precedence number of physical switch, physical switch state parameter and basic ID number between mathematical relationship
Formula, every equipment indicate that the different basic ID number of different device configurations, computation rule can satisfy not with a basic ID number
With physical switch on off operating mode (permutation and combination that state parameter can be regarded as) calculate the basic ID number obtained be it is unique,
It cannot be overlapped.
Current ID number obtains module 3, for according to the mapping relations of preset function and offset and the offset,
Current ID number and functional meaning described in Relation acquisition between the basis ID number, current ID number.
Such as the mapping relations of preset function and offset are as follows:
Deviant 0 indicates the state of device keys；
Deviant 1 indicates the state of equipment indicating lamp；
Such as the relationship between basic ID number, current ID number are as follows:
Basic ID number is equal to current ID number plus offset；
Here current ID number refers to the ID number configured under physical switch current state, when one of physical switch
When state changes, current ID number will change.Describing ID number jointly by basic ID number and function offset indicates
Function.
Basic ID number is identical, indicates the same equipment, function offset is for the report as the same equipment different function
The ID number of text is distinguished.
Preferably, multiple physical switch are arranged according to tandem；
The CAN bus ID number switch further include:
Encoder 12, for 1~N to be numbered according to tandem for multiple physical switch 11, wherein N be greater than
1 positive integer.Encoder 12 is used to obtain the precedence number that module 2 sends the physical switch 11 to basic ID number.
The basis ID number obtains module 2 and includes:
Switching sequence assignment unit 21, for number be 1~N the physical switch respectively correspond assignment 20~2N-1；
Switch state assignment unit 22, for when the physical switch is on-state, assigning state parameter M to be 1；With
In when the physical switch is off-state, assigning state parameter M is 0, MNIndicate the shape for the physical switch that number is N
State；
Computing unit 23, for according to basic ID number A1=(20×M1+21×M2+22×M3+23×M4+…+2N-1×MN)
× N obtains basic ID number A1。
The current ID number obtains module 3
Offset-function map unit 31, for being each function p according to the particular number i for the function of using equipmentiIn advance
If corresponding offset Pi, PiFor numerical value, piFor function description；
Current ID number acquiring unit 32, for obtaining institute according to the relationship between current ID number, basic ID number and offset
State current ID number A；Current ID number A=A1+Pi；
Function describes acquiring unit 33, the offset P for being included according to the current ID number AiAnd the offset
The mapping relations of amount and function, the functional meaning for obtaining the current ID number is piThe function of expression describes.It is provided by the invention
The ID number of message is divided into basic ID number and offset two parts by CAN bus ID number configuration device, and basic ID number is opened by physics
The on off operating mode of pass obtains, and offset presets specific function by the mapping relations of known function and offset
Value obtains, and sum of the two is exactly current ID number；ID number can be not necessarily to be directed to identical function by user's situ configuration, manufacturer
Product because bus message difference due to produce unused model.Scene can directly be modified by the state of change physical switch and be set
Preparation deliver newspaper text ID number realize the switching of function to distinguish different equipment.The meaning according to representated by physical switch,
It can be apparent from message number transmitted by current device, improve the convenience of the debugging of CAN bus device context and installation.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the design of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (10)
1. a kind of CAN bus ID number configuration method, which is characterized in that at least include the following steps:
Multiple physical switch are arranged as CAN bus ID number switch；
Basic ID number is obtained according to the on off operating mode of the physical switch；
According between the mapping relations and the offset of preset function and offset, the basic ID number, current ID number
Relation acquisition described in current ID number and functional meaning.
2. CAN bus ID number configuration method according to claim 1, which is characterized in that the multiple physical switch of arrangement
Include: as the step of CAN bus ID number switch
Multiple physical switch are arranged according to tandem；
1~N is numbered according to tandem for multiple physical switch, wherein N is the positive integer greater than 1.
3. CAN bus ID number configuration method according to claim 2, which is characterized in that the detection physical switch
On off operating mode the step of obtaining basic ID number include:
The physical switch for being 1~N to number respectively corresponds assignment 20~2N-1；
If the physical switch is on-state, state parameter M is 1, if the physical switch is off-state, shape
State parameter M is 0, MNIndicate the state parameter for the physical switch that number is N；
Then basic ID number A1=(20×M1+21×M2+22×M3+23×M4+…+2N-1×MN) × N, wherein N >=4.
4. CAN bus ID number configuration method according to claim 3, which is characterized in that it is described according to preset function with
The mapping relations of offset and the offset, the basic ID number, current ID described in the Relation acquisition between current ID number
Number and functional meaning include:
Default bias amount PiCorresponding function is pi, i is the particular number of the function, PiFor numerical value, piFor function description；
Current ID number A=A1+Pi；
The functional meaning of the current ID number is piThe function of expression describes.
5. CAN bus ID number configuration method according to any one of claims 1 to 4, which is characterized in that the CAN bus
ID number switch is toggle switch.
6. a kind of CAN bus ID number configuration device characterized by comprising
CAN bus ID number switch, including the multiple physical switch being arranged；
Basic ID number obtains module, for obtaining basic ID number according to the on off operating mode of the physical switch；
Current ID number obtains module, for according to the mapping relations of preset function and offset and the offset, described
Current ID number and functional meaning described in Relation acquisition between basic ID number, current ID number.
7. CAN bus ID number configuration device according to claim 6, which is characterized in that multiple physical switch according to
Tandem arrangement；
The CAN bus ID number switch further include:
Encoder, for 1~N to be numbered according to tandem for multiple physical switch, wherein N is just whole greater than 1
Number.
8. CAN bus ID number configuration device according to claim 7, which is characterized in that the basis ID number obtains module
Include:
Switching sequence assignment unit, for number be 1~N the physical switch respectively correspond assignment 20~2N-1；
Switch state assignment unit, for when the physical switch is on-state, assigning state parameter M to be 1；For institute
State physical switch be off-state when, assign state parameter M be 0, MNIndicate the state ginseng for the physical switch that number is N
Number；
Computing unit, for according to basic ID number A1=(20×M1+21×M2+22×M3+23×M4+…+2N-1×MN) × N is obtained
Basic ID number A1, wherein N >=4.
9. CAN bus ID number configuration device according to claim 8, which is characterized in that the current ID number obtains module
Include:
Offset-function map unit, for being each function p according to the particular number i for the function of using equipmentiIt is default to correspond to
Offset Pi, PiFor numerical value, piFor function description；
Current ID number acquiring unit, for according to current ID number A=A1+Pi, obtain the current ID number A；
Function describes acquiring unit, the offset P for being included according to the current ID number AiAnd the offset and function
The mapping relations of energy, the functional meaning for obtaining the current ID number is piThe function of expression describes.
10. according to the described in any item CAN bus ID number configuration devices of claim 6~9, which is characterized in that the CAN bus
ID number switch is toggle switch.
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