CN104580461B - A kind of communication means of more hosts and more slaves - Google Patents
A kind of communication means of more hosts and more slaves Download PDFInfo
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- CN104580461B CN104580461B CN201510007417.5A CN201510007417A CN104580461B CN 104580461 B CN104580461 B CN 104580461B CN 201510007417 A CN201510007417 A CN 201510007417A CN 104580461 B CN104580461 B CN 104580461B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The present invention relates to the communications fields, provide the communication means of a kind of more hosts and more slaves, to solve the problems, such as that multiple main frames equipment and multiple slave devices not can be carried out data interaction and instruction controls.This method comprises: host equipment sends connection request to communication gate and identity token carries out authentication, carry out data transmission between the host equipment and communication gate after authentication passes through；Communication gate actively sends connection request to each slave devices and identity token carries out authentication, and authentication between rear communication gate and slave devices by carrying out data transmission.Technical solution proposed by the present invention realizes the communication of more hosts Yu more slaves, and multiple main frames equipment and multiple slave devices are able to carry out data interaction and instruction controls.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of communication means of more hosts and more slaves.
Background technique
Basalt continuous fiber in smelting furnace after high-temperature fusion, is closed by platinum rhodium using basalt ore as raw material
Golden bushing, the continuous fiber made of 1200 degree or so high speed pullings, which, which removes, has the characteristics that high-intensitive, high-modulus
Outside, also there are the excellent properties such as resistance to high/low warm nature, acid and alkali-resistance, anti-oxidant, anti-radiation, thermal acoustic insulation, fire protection flame retarding, it is therefore, profound
Military rock fiber can be widely applied to the neck such as fire-fighting, environmental protection, aerospace, military project, automobile shipbuilding, engineering plastics and building
Domain.
The ore for producing basalt continuous fiber needs to melt in kiln high temperature, then leaks using the wire drawing of high temperature
Plate could form qualified fiber.Clearly for bushing temperature control and assurance be it is vital, due to the Black Warrior
Rock fiber is influenced by the factors such as flow of temperature, furnace pressure, the revolving speed of wire drawing, solution, so in the mistake of worker's wire drawing
Cheng Zhong is inevitable the operation that heating, cooling is carried out to bushing.Since production environment limits, control room is separate
Worker operation scene, live heating, cooling operation needs to be transferred to control room progress, in order to unified centralized management.
In the past to control fairly simpleization of bushing heating, cooling, only there are the button and indicator light of several dispersions,
In this way in normal production in the future, component is particularly easy to damage, and numeral method also will appear inaccuracy, messy code
Situation, while also improving material cost and construction cost, such as previous every kiln need the electric wire of 6 0.5mm, this for
It may be inappreciable for one kiln, but for a production line or a factory, every kiln will be 6
Electric wire, apart from far, it is necessary to tens even up to a hundred electric wires thus have very big workload,
And it debugs also troublesome.
In order to solve problem above, based on a kind of communications protocol by Modbus can be used for bushing liter,
Local communication device in cooling system, the local communication device are made of host equipment, communication gate and slave devices, host
It is communicated between equipment, communication gate and slave devices based on RS485 network, and in RS485 communication network common at present
It is generally adopted by master-slave communication mode, the i.e. multiple slaves of host tape, when there are multiple main frames equipment, multiple main frames are set
It is standby not can be carried out data interaction and instruction control between multiple slave devices.
Summary of the invention
[technical problems to be solved]
The object of the present invention is to provide the communication means of a kind of more hosts and more slaves, to solve be based on RS485 network
Communication mode under, multiple main frames equipment and multiple slave devices not can be carried out data interaction and the problem of instruction control.
[technical solution]
The present invention is achieved by the following technical solutions.
The present invention relates to the communication means of a kind of more hosts and more slaves, this method comprises:
Each host equipment monitors communication gate in real time, judges whether communication gate has new request of data, if communication
Gateway has new request of data, then host equipment sends connection request to communication gate and identity token carries out authentication,
Carry out data transmission between the host equipment and communication gate after authentication passes through, if the not new data of communication gate are asked
It asks, then each host equipment continues to monitor communication gate；
Communication gate actively sends connection request to each slave devices and identity token carries out authentication, and identity is recognized
Card between rear communication gate and slave devices by carrying out data transmission.
As a preferred embodiment, between the host equipment and communication gate, slave devices and communication gate
Between be all made of data packet and carry out data transmission, the data packet include device token, data function order, register address,
Data packet and check code.
As another preferred embodiment, the recipient of the data packet after receiving data packet, further include with
Lower processing step:
Step A: data receiver carries out tearing frame open according to the format of data packet；
Step B: data receiver judges whether identity token is correct, on the contrary if identity token correctly thens follow the steps C
Then exit present treatment process；
Step C: data receiver's progress data frame is unpacked and check code verification；
Step D: data receiver carries out data processing or corresponding control action according to data function order.
As another preferred embodiment, the recipient of the data packet is host equipment, slave devices or communication
Gateway.
As another preferred embodiment, the host equipment is display terminal, and the slave devices are adopted for data
Collect terminal.
As another preferred embodiment, between the host equipment and communication gate, communication gate and slave set
Communication interface between standby is RS485 interface.
As another preferred embodiment, between the host equipment and communication gate, communication gate and slave set
Communication pattern between standby is RTU mode.
As another preferred embodiment, between the host equipment and communication gate, communication gate and slave set
Communication protocol between standby is Modbus communication protocol.
[beneficial effect]
Technical solution proposed by the present invention has the advantage that
(1) it is authenticated in communication process using identity token, improves the reliability of communication；
(2) it encapsulates data as unified data packet, makes host equipment, communication gate, slave devices can be according to number
Corresponding operation is carried out to data packet according to the type of packet, improves the efficiency of transmission of data；
(3) communication based on RS485 network implementations more hosts and more slaves, multiple main frames equipment and multiple slave devices
It is able to carry out data interaction and instruction control.
Detailed description of the invention
Fig. 1 is the flow chart of the communication means between host equipment and communication gate that the embodiment of the present invention provides；
Fig. 2 is the flow chart of the communication means between slave devices and communication gate that the embodiment of the present invention provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing, to of the invention specific
Embodiment carries out clear, complete description, it is clear that and described embodiment is a part of the embodiments of the present invention, rather than
Whole embodiments, nor limitation of the present invention.Based on the embodiment of the present invention, those of ordinary skill in the art are not paying
Every other embodiment obtained, belongs to protection scope of the present invention under the premise of creative work.
Fig. 1 is the flow chart of the communication means between host equipment and communication gate that the embodiment of the present invention provides, Fig. 2
The flow chart of the communication means between slave devices and communication gate provided for the embodiment of the present invention.
In the present embodiment, host equipment is shown including the first host display terminal, the second host display terminal, third host
Terminal and the 4th host display terminal, slave devices include the first slave control device, the second slave control device, third slave
Control device, the 4th slave control device, the 5th slave control device and the 6th slave control device.Each host display terminal
Between communication gate, it between communication gate and each slave control device, is all made of " isolation, defence surge, terminal resistance
With " after RS485 electric interfaces, the communication pattern used is RTU mode, and the communication protocol used is Modbus communication protocol.
Illustrate that the communication process of the second host display terminal and the 6th slave control device, the communication process specifically wrap below
Process one and process two are included, wherein communication process of the process one between the second host display terminal and communication gate, process two
For the communication process between the 6th slave control device and communication gate.
Process one includes step 11 to step 14, is illustrated separately below to step 11 to step 14.
Step 11: the second host display terminal initiates to request to communication gate.
Step 12: the second host display terminal actively judges whether to receive correct response, if receiving correct response, hold
Row step 13, it is on the contrary then prompt to malfunction.
Step 13: communication gate sends connection request to the second host display terminal and identity token carries out identity and recognizes
Card, certification then follow the steps 14 after passing through, on the contrary then ignore the connection request
Step 14: carrying out data transmission between the second host display terminal and communication gate.
Specifically, if the second host display terminal sends data packet to communication gate, wherein data packet includes that equipment enables
Board, data function order, register address, data packet and check code, then step 14 specifically includes:
Communication gate carries out tearing frame open according to the format of data packet；
Communication gate judges whether identity token correct, if identity token correctly if perform the next step it is rapid, it is on the contrary then move back
Step 14 out；
Communication gate progress data frame is unpacked and check code verification；
Communication gate carries out data processing or corresponding control action according to data function order.
Process two includes step 21 to step 24, is illustrated separately below to step 21 to step 24.
Step 21: communication gate initiates to request to the 6th slave devices.
Step 22: communication gate actively judges whether to receive correct response, if receiving correct response, then follow the steps
23, it is on the contrary then prompt to malfunction.
Step 23: the 6th slave devices send connection request to communication gate and identity token carries out authentication, recognize
Card thens follow the steps 24 after passing through, on the contrary then ignore the connection request.
Step 24: carrying out data transmission between the 6th slave devices and communication gate.
Specifically, if communication gate sends data packet to the 6th host equipment, wherein data packet includes device token, number
According to command function, register address, data packet and check code, then step 24 specifically includes:
6th slave devices carry out tearing frame open according to the format of data packet；
6th slave devices judge whether identity token correct, if identity token correctly if perform the next step it is rapid, it is on the contrary
Then exit step 24；
6th slave devices progress data frame is unpacked and check code verification；
6th slave devices carry out data processing or corresponding control action according to data function order.
The communication between the second host display terminal and the 6th slave devices is realized by process one and process two.
As can be seen from the above embodiments, it is authenticated, is mentioned using identity token in the communication process of the embodiment of the present invention
The high reliability of communication；The embodiment of the present invention encapsulates data as unified data packet, make host equipment, communication gate, from
Machine equipment can carry out corresponding operation to data packet according to the type of data packet, improve the efficiency of transmission of data；This hair
Bright embodiment uses the communication based on RS485 network implementations more hosts and more slaves, and multiple main frames equipment is set with multiple slaves
It is standby to be able to carry out data interaction and instruction control.
Claims (8)
1. a kind of communication means of more hosts and more slaves, characterized by comprising: each host equipment host is actively to communication
Gateway initiates request, judges whether to receive correct response, to monitor communication gate in real time, it is new to judge whether communication gate has
Request of data, if communication gate has new request of data, host equipment sends connection request and identity to communication gate
Token carries out authentication, carries out data transmission between the host equipment and communication gate after authentication passes through, if communication
The not new request of data of gateway, then each host equipment continues to monitor communication gate；
Communication gate actively initiates to request to each slave devices, judges whether to receive correct response, if receiving correct response,
Then slave devices send connection request to communication gate and identity token carries out authentication, and authentication passes through rear communication network
It closes and carries out data transmission between slave devices.
2. the communication means of more hosts and more slaves according to claim 1, it is characterised in that the host equipment and logical
Between letter gateway, data packet is all made of between slave devices and communication gate carrying out data transmission, the data packet includes equipment
Token, data function order, register address, data packet and check code.
3. the communication means of more hosts and more slaves according to claim 2, it is characterised in that the reception of the data packet
Side further includes following processing step after receiving data packet:
Step A: data receiver carries out tearing frame open according to the format of data packet；
Step B: data receiver judges whether identity token is correct, on the contrary then move back if identity token correctly thens follow the steps C
Present treatment process out；
Step C: data receiver's progress data frame is unpacked and check code verification；
Step D: data receiver carries out data processing or corresponding control action according to data function order.
4. the communication means of more hosts and more slaves according to claim 3, it is characterised in that the reception of the data packet
Side is host equipment, slave devices or communication gate.
5. according to claim 1 to the communication means of any more hosts and more slaves in 4, it is characterised in that the host
Equipment is display terminal, and the slave devices are slave control device.
6. according to claim 1 to the communication means of any more hosts and more slaves in 4, it is characterised in that the host
Communication interface between equipment and communication gate, between communication gate and slave devices is RS485 interface.
7. according to claim 1 to the communication means of any more hosts and more slaves in 4, it is characterised in that the host
Communication pattern between equipment and communication gate, between communication gate and slave devices is RTU mode.
8. according to claim 1 to the communication means of any more hosts and more slaves in 4, it is characterised in that the host
Communication protocol between equipment and communication gate, between communication gate and slave devices is Modbus communication protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007417.5A CN104580461B (en) | 2015-01-07 | 2015-01-07 | A kind of communication means of more hosts and more slaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007417.5A CN104580461B (en) | 2015-01-07 | 2015-01-07 | A kind of communication means of more hosts and more slaves |
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| Publication Number | Publication Date |
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| CN104580461A CN104580461A (en) | 2015-04-29 |
| CN104580461B true CN104580461B (en) | 2019-03-01 |
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| CN201510007417.5A Active CN104580461B (en) | 2015-01-07 | 2015-01-07 | A kind of communication means of more hosts and more slaves |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107423240A (en) * | 2017-07-28 | 2017-12-01 | 白宏刚 | The more main frames of self-learning type read while write the algorithm of serial ports slave computer or bus data |
| CN110995686B (en) * | 2019-11-26 | 2022-04-01 | 珠海泰芯半导体有限公司 | Software communication protocol checking method |
| CN111124986B (en) * | 2019-12-30 | 2023-04-18 | 贵州兔淘智能科技有限公司 | Asynchronous serial port communication protocol compatible with Modbus and high in efficiency |
| CN112765076B (en) * | 2021-01-13 | 2022-12-06 | 上海是杰工业技术有限公司 | MODBUS data processing method, device, equipment and computer readable storage medium |
| CN113051101B (en) * | 2021-04-26 | 2021-12-14 | 广州市新矽亚电子科技有限公司 | Communication system and method of common bus and multiple slaves |
| CN115982072B (en) * | 2023-03-16 | 2023-05-30 | 中京科信技术有限公司 | Information communication method, apparatus, computer device and storage medium |
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