CN205594375U - Communication system based on PLC - Google Patents
Communication system based on PLC Download PDFInfo
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- CN205594375U CN205594375U CN201620312194.3U CN201620312194U CN205594375U CN 205594375 U CN205594375 U CN 205594375U CN 201620312194 U CN201620312194 U CN 201620312194U CN 205594375 U CN205594375 U CN 205594375U
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- communication
- plc
- memory module
- asic chip
- communication system
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Abstract
The utility model discloses a communication system based on PLC, include operation CPU kernel and communication CPU kernel among the PLC, communication system includes ASIC chip, PROFIBUS bus and PROFINET bus, be equipped with storage module in the communication CPU kernel, operation CPU kernel with storage module in the communication CPU kernel is through parallel port bus mode communication connection, storage module with communication protocol communication connection is passed through to the PROFIBUS bus, storage module with the ASIC chip is through parallel port bus mode communication connection, the ASIC chip with communication protocol communication connection is passed through to the PROFINET bus. The utility model discloses in, through using ASIC chip mode, improved data interchange's speed, guaranteed the operational speed of PLC equipment simultaneously.
Description
Technical field
This utility model relates to communication technical field, particularly relates to a kind of communication system based on PLC.
Background technology
Along with the high speed development of science and technology and deepening continuously of " industry 4.0 " concept, modern industry is towards more
High intellectuality and automation direction development, required on-site data gathering is the hugest, little micro-
The demand of type PLC and distrbuted IO accordingly increases.
Existing PLC is generally possible to be accomplished that general T CP/IP or MODBUS-TCP communication, mesh
Before only have the external PLC of only a few to be capable of PROFINET communication, such as Siemens, ABB on the market
Deng.
The technical scheme realizing PROFINET communication at present includes interface chip ASIC (Application
Specific Integrated Circuit, integrated circuit), stack approach etc., wherein, be compared to association
View stack mode, uses ASIC mode, has that development difficulty is little, the construction cycle is short, take CPU core
The advantages such as resource is few, the arithmetic speed not affecting main CPU core.
Utility model content
This utility model provides a kind of communication system based on PLC, to improve the speed of data exchange, with
Time ensure PLC device arithmetic speed.
In order to achieve the above object, this utility model provides a kind of communication system based on PLC, described PLC
In include computing CPU core and communication cpu kernel, described communication system include asic chip,
PROFIBUS bus and PROFINET bus, be provided with memory module in described communication cpu kernel,
Described computing CPU core leads to through parallel busses mode with the memory module in described communication cpu kernel
Letter connects, and described memory module is connected by communication protocol communication with described PROFIBUS bus, described
Memory module communicates to connect through parallel busses mode with described asic chip, and described asic chip is with described
PROFINET bus is connected by communication protocol communication.
Further, described memory module specifically includes data RAM district and buffer area,
Described data RAM district and described buffer area data cube computation, described buffer area respectively with described computing
CPU core, PROFIBUS bus and asic chip communication connection.
Further, described computing CPU core and the memory module in described communication cpu kernel are through 32
Position parallel busses mode communicates to connect.
Further, described memory module and described asic chip are through 16 parallel busses mode communication link
Connect.
Further, described computing CPU core and communication cpu kernel constitute single-chip microcomputer LPC4357.
Further, described asic chip is specially ERTEC200 chip.
Compared with prior art, this utility model at least has the advantage that
By using asic chip mode, improve the speed of data exchange, ensure that PLC sets simultaneously
Standby arithmetic speed.
Accompanying drawing explanation
Fig. 1 is system architecture diagram provided by the utility model；
Fig. 2 is data interaction schematic diagram provided by the utility model.
Reference:
1-computing CPU core；2-communication cpu kernel；3-ERTEC200 chip；4-PROFIBUS
Bus；5-PROFINET bus；6-single-chip microcomputer LPC4357；7-data RAM district；8-caches
District.
Detailed description of the invention
The utility model proposes a kind of communication system based on PLC, wherein, described PLC includes fortune
Calculate CPU core and communication cpu kernel, described communication cpu kernel is provided with memory module, described logical
Communication system includes asic chip, PROFIBUS bus and PROFINET bus, below in conjunction with the accompanying drawings,
This utility model detailed description of the invention is described in detail.
Described computing CPU core leads to through parallel busses mode with the memory module in described communication cpu kernel
Letter connects, and described memory module is connected by communication protocol communication with described PROFIBUS bus, described
Memory module communicates to connect through parallel busses mode with described asic chip, and described asic chip is with described
PROFINET bus is connected by communication protocol communication.
Further, described memory module specifically includes data RAM district and buffer area,
Described data RAM district and described buffer area data cube computation, described buffer area respectively with described computing
CPU core, PROFIBUS bus and asic chip communication connection.
Further, described computing CPU core and the memory module in described communication cpu kernel are through 32
Position parallel busses mode communicates to connect.
Further, described memory module and described asic chip are through 16 parallel busses mode communication link
Connect.
Further, described computing CPU core and communication cpu kernel constitute single-chip microcomputer LPC4357.
Further, described asic chip is specially ERTEC200 chip.
As shown in Fig. 1～2, concrete, the PLC in this programme uses single-chip microcomputer LPC4357 as core
CPU core, LPC4357 is the CPU core of a double-core, by one 32 between two cores
Parallel busses mode communicates to connect and realizes information exchange, and the advantage of this parallel busses is that data transmission is quick,
Take CPU core resource few.
Wherein, for the double-core CPU core of this single-chip microcomputer LPC4357, it is subdivided into computing CPU
Kernel and communication cpu kernel, this communication cpu kernel is specifically used to design the drive software of communication, passes through
So Subdividing Processing, it is ensured that the arithmetic core part (computing CPU core) of PLC will not be by logical
Interrupting of news drive software (communication cpu kernel), and then ensure that the arithmetic speed of PLC core algorithm.
In PROFINET communication part, realized by an external asic chip, wherein, should
Asic chip specifically chooses ERTEC200 chip, decreases the workload of communication cpu kernel.?
Realize data by the parallel busses mode of 16 between ERTEC200 chip and LPC4357 to hand over
Change, in like manner, use parallel busses mode primarily to increase communication speed, reduce communication cpu kernel
Workload.
In LPC4357, it is responsible in the memory module in the communication cpu kernel that communication drives, by opening
Ward off required data RAM district, in order to computing CPU core is called and more at any time by parallel busses mode
New data RAM district.Data RAM district as public data field, can by computing CPU core,
PROFIBUS bus, ERTEC200 chip more new data, thus realize the data exchange of tripartite.
In this programme, by 16 parallel busses sides between ERTEC200 chip and data RAM district
Formula carries out data exchange, and the advantage of such way is to improve communication speed, reduces the negative of communication cpu kernel
Lotus.By this programme, the purpose being finally reached is to realize PROFINET bus and PROFIBUS bus
Working on a PLC, such PLC both can be as the main website collection site of PROFIBUS simultaneously
Data can also be uploaded to monitoring system by data simultaneously, the easy comprehensive data acquisition realizing factory,
Both ensure that the arithmetic speed of PLC, decrease again cost payout.
Wherein, the modules of this utility model device can be integrated in one, it is also possible to separates and disposes.
Above-mentioned module can merge into a module, it is also possible to is further split into multiple submodule.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, in accompanying drawing
Module or flow process are not necessarily implemented necessary to this utility model.
It will be appreciated by those skilled in the art that the module in the device in embodiment can describe according to embodiment
Carry out being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than the one of the present embodiment
In individual or multiple device.The module of above-described embodiment can merge into a module, it is also possible to tears open further
It is divided into multiple submodule.
Above-mentioned this utility model sequence number, just to describing, does not represent the quality of embodiment.
Only several specific embodiments of the present utility model disclosed above, but, this utility model is not
Being confined to this, the changes that any person skilled in the art can think of all should fall into protection of the present utility model
Scope.
Claims (6)
1. a communication system based on PLC, it is characterised in that include computing CPU in described PLC
Kernel and communication cpu kernel, described communication system include asic chip, PROFIBUS bus and
PROFINET bus, is provided with memory module in described communication cpu kernel,
Described computing CPU core leads to through parallel busses mode with the memory module in described communication cpu kernel
Letter connects, and described memory module is connected by communication protocol communication with described PROFIBUS bus, described
Memory module communicates to connect through parallel busses mode with described asic chip, and described asic chip is with described
PROFINET bus is connected by communication protocol communication.
2. plc communication system as claimed in claim 1, it is characterised in that described memory module is concrete
Including data RAM district and buffer area,
Described data RAM district and described buffer area data cube computation, described buffer area respectively with described computing
CPU core, PROFIBUS bus and asic chip communication connection.
3. plc communication system as claimed in claim 1, it is characterised in that in described computing CPU
Core communicates to connect through 32 parallel busses modes with the memory module in described communication cpu kernel.
4. plc communication system as claimed in claim 1, it is characterised in that described memory module and institute
State asic chip to communicate to connect through 16 parallel busses modes.
5. plc communication system as claimed in claim 1, it is characterised in that in described computing CPU
Core and communication cpu kernel constitute single-chip microcomputer LPC4357.
6. plc communication system as claimed in claim 1, it is characterised in that described asic chip has
Body is ERTEC200 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312194.3U CN205594375U (en) | 2016-04-15 | 2016-04-15 | Communication system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620312194.3U CN205594375U (en) | 2016-04-15 | 2016-04-15 | Communication system based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205594375U true CN205594375U (en) | 2016-09-21 |
Family
ID=56923063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620312194.3U Expired - Fee Related CN205594375U (en) | 2016-04-15 | 2016-04-15 | Communication system based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205594375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716807A (en) * | 2019-09-29 | 2020-01-21 | 合肥矽景电子有限责任公司 | Embedded processing device |
-
2016
- 2016-04-15 CN CN201620312194.3U patent/CN205594375U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110716807A (en) * | 2019-09-29 | 2020-01-21 | 合肥矽景电子有限责任公司 | Embedded processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 |