CN205486081U

CN205486081U - Embedded outside memory bus extension profinet bus device of CPU

Info

Publication number: CN205486081U
Application number: CN201620118659.1U
Authority: CN
Inventors: 钱国涛
Original assignee: Wuhan Guide Electric Drive Technology Co Ltd
Current assignee: Wuhan Gangdi Technology Co.,Ltd.
Priority date: 2016-02-05
Filing date: 2016-02-05
Publication date: 2016-08-17
Anticipated expiration: 2026-02-05

Abstract

The utility model discloses an embedded outside memory bus extension profinet bus device of CPU, memory module, communication control CPU, profinet communications protocol including connecting gradually handle the chip, receive and dispatch linking module, and memory module is used for connecting embedded CPU, and receiving and dispatching linking module is used for connecting profinet communication bus, still include power module, power module connects in communication control CPU, profinet communications protocol processing chip, receiving and dispatching linking module and embedded CPU. Greatly reduced during whole CPU uses, the development degree of difficulty and cycle on profinet communications protocol, improve the CPU code, the security and the reliability of profinet communication operation.

Description

A kind of embedded type CPU external memory bus extension Profinet bus unit

Technical field

This utility model belongs to communication technique field, is specifically related to outside a kind of embedded type CPU Rambus extension Profinet bus unit.

Background technology

Profinet is a kind of internationalization, open automatization's bus standard.Profinet is certainly The dynamicization communications field provides a complete Networking Solutions & provisioned, enumerates such as ether in real time The current automatization such as net, motor control, distributed automatization, failure safe and network security The much-talked-about topic in field, and as the technology across supplier, can be with completely compatible industry ether Net and existing fieldbus (such as PROFIBUS) technology, can protect existing investment.Along with Improving constantly of field apparatus degree of intelligence, the degree of scatter of automation control system is the most increasingly High.Industrial control system just by distributing automatization to distributed automatization evolution, therefore, base Automatization (Component Based Automation, CBA) in assembly becomes emerging Trend.Relevant mechanical part, electrical/electronic components and application softwaries etc. in factory have The technical module of capacity of working on one's own is abstracted as a packaged assembly, and each inter-module uses Profinet connects.The field applied includes processing and manufacturing. process control and automatization etc.. Profinet is open and the imagination communicated not relying on manufacturer, as system operator, from Field apparatus, to management level, can obtain advantage from the universal communication of IT standard, to existing Have system to be extended also to be easy to.

Therefore in the application of general-purpose built-in type CPU, CPU does not the most provide Profinet The technology of bus protocol realizes, and this equipment, if desired for being connected in Profinet bus system, is made During for a slave station in this system, it is necessary to this CPU completes the agreement of Profinet bus Exploitation and realization, will give cpu system developer bring huge protocol development to work Measuring, the correctness of protocol function and reliability can not be ensured completely, development cost and difficulty Spend the highest.

Summary of the invention:

The purpose of this utility model is to provide a kind of embedded type CPU external memory bus extension Profinet bus unit, using the teaching of the invention it is possible to provide general-purpose built-in type CPU simple, a reliable extension The device of Profinet bus, reduces developer's workload, it is ensured that correctness and reliability, To overcome problem present in background technology.

To achieve these goals, the technical solution of the utility model is:

A kind of embedded type CPU external memory bus extension Profinet bus unit, including depending on The memory module of secondary connection, Communication Control CPU, Profinet communications protocol process chip, Transmitting-receiving link block, memory module is used for connecting embedded type CPU, and transmitting-receiving link block is used In connecting Profinet communication bus；Also including power module, power module is connected to communication control CPU, Profinet communications protocol processed processes chip, transmitting-receiving link block and embedded type CPU.

It is preferred that include that at least two receives and dispatches link block.

It is preferred that transmitting-receiving link block includes being connected with each other signal transceiver and network connector, Signal transceiver is used for connecting Profinet communications protocol and processes chip, and network connector is for even Connect Profinet communication bus.

It is preferred that signal transceiver is ethernet signal transceiver, network connector is Ethernet RJ45 adapter.

It is preferred that memorizer is FIFO memory.

It is preferred that be connected between memorizer with Communication Control CPU have data wire, address wire and Control line.

The beneficial effects of the utility model are: need to realize in embedded type CPU is applied During Profinet bus communication, new by mounting this practicality in CPU external memory bus circuit Device described in type, can alleviate software developer's development difficulty to Profinet bus, and not Need software developer, development and application Profinet bus protocol.Greatly reduce whole In CPU application, the development difficulty in Profinet communications protocol and cycle, improve CPU In code, the safety and reliability of Profinet communication operation.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model embodiment.

In figure: 1-memory module, 2-Communication Control CPU, at 3-Profinet communications protocol Reason chip, 4-embedded type CPU, 5-Profinet communication bus, 6-power module, 7-first receives Sending out link block, 8-second receives and dispatches link block, 9-signal transceiver, 10-network connector.

Detailed description of the invention

With embodiment, this utility model is described further below in conjunction with the accompanying drawings.

A kind of device of embedded type CPU 4 external memory bus extension Profinet communication bus 5, At the memory module 1 being sequentially connected with, Communication Control CPU2, Profinet communications protocol Reason chip 3, transmitting-receiving link block, memory module 1 is used for connecting embedded type CPU 4, receives Send out link block to be used for connecting Profinet communication bus 5；Also include power module 6, power supply Module 6 is connected to Communication Control CPU2, Profinet communications protocol processes chip 3, transmitting-receiving connects Connection module and embedded type CPU 4.Memorizer is FIFO memory.Memorizer and Communication Control Connect between CPU2 and have data wire, address wire and control line.

The present embodiment includes that at least two receives and dispatches link block, is designated as the first transmitting-receiving connection mode respectively Block 7 and the second transmitting-receiving link block 8, two described transmitting-receiving link blocks all include being connected with each other Signal transceiver 9 and network connector 10, signal transceiver 9 is used for connecting Profinet communication Protocol processes chip 3, network connector 10 is used for connecting Profinet communication bus 5.Signal Transceiver 9 is ethernet signal transceiver 9, and network connector 10 connects for Ethernet RJ45 Device.

In the present embodiment, power module 6 is partially completed Communication Control in whole communication device CPU2, Profinet communications protocol processes ethernet transceiver in chip 3 and transmitting-receiving link block The 1V used Deng needs, the conversion of the various electric pressure such as 1.8V, 3.3V.

Between Communication Control CPU2, complete cost apparatus and this device outer general-purpose built-in type CPU4 The exchange of each item data such as every bus data, control command and equipment state and process, and Profinet communications protocol processes control and the operation of chip 3.Communication Control CPU2 has three The process function of individual part: process the control signal from this device outer general-purpose built-in type CPU4, Complete handshake, the input of a series of controlled state such as plant running state, process and defeated Go out；The data processing the every bus input and output between general-purpose built-in type CPU4 exchange, The Profinet bus received is exported the data of this slave station, is written to FIFO memory And notify general-purpose built-in type CPU4；From FIFO memory, general-purpose built-in type CPU4 is write Pre-transmission digital independent out, through data process after, be sent to Profinet agreement Process chip；Process and the operations of Profinet communications protocol process chip 3, complete Profinet communications protocol processes initialization and the startup of chip 3, and Profinet bus is joined The setting of number, the diagnosis of Profinet bus state, the transceiving data exchange of Profinet bus Profinet bus operation Deng some row, it is achieved Profinet bus protocol various functions.

The present embodiment passes through Profinet protocol processes chip, it is achieved in Profinet bus The process of the various communications protocol from bottom to application layer and real-time communication service.This chip completes And the parsing of every communication data packet, response and the data exchange between each station of Profinet, And the exchange of packet and route in Ethernet, it is achieved a complete Profinet reliably Slave station.Profinet protocol processes chip also communicates with Communication Control CPU2 simultaneously, will be from Every needs of outside general-purpose built-in type CPU4 write and each item number of Profinet main website exchange According to, be converted to the corresponding data exchange data packets in Profinet bus and Profinet main website Do data exchange.

By device described in the present embodiment can be implemented in guarantee minimize interpolation CPU device drive The slave station configuration of the bus of Profinet is completed in the case of dynamic code, efficient communication bus operation, Slave station diagnostic state reports, and data exchange, and the various Profinet such as Profinet bus protocol The application of bus.By CPU external memory bus, it is connected to device described in the present embodiment Device, the Profinet network interface of output is connected in Profinet bus.CPU completes right The read or write of this device particular address, completes and the order of this device or the exchange of data, Thus complete Profinet bus operations, such as slave station configures, slave station parameter reads, A series of Profinet bus operations such as the exchange with main website inputoutput data, it is achieved Profinet The extension of bus and realization.

It should be appreciated that for those of ordinary skills, can according on state Bright improved or converted, and all these modifications and variations all should be belonged to appended by this utility model Scope of the claims.This specification is not described in detail to partly belong to this area special Prior art known to industry technical staff.

Claims

1. an embedded type CPU external memory bus extension Profinet bus unit, it is special Levy and be, including the memory module (1) being sequentially connected with, Communication Control CPU (2), Profinet Communications protocol processes chip (3), transmitting-receiving link block (7) (8), and described memory module (1) is used for Connecting described embedded type CPU (4), described transmitting-receiving link block is used for connecting described Profinet Communication bus (5)；Also include that power module (6), described power module (6) are connected to described communication Control CPU (2), described Profinet communications protocol processes chip (3), described transmitting-receiving connection mode Block and described embedded type CPU (4).

A kind of embedded type CPU external memory bus extension the most according to claim 1 Profinet bus unit, it is characterised in that: include receiving and dispatching described at least two link block (7) (8)。

A kind of embedded type CPU external memory bus the most according to claim 1 and 2 expands Exhibition Profinet bus unit, it is characterised in that: described transmitting-receiving link block (7) (8) includes phase Connect signal transceiver (9) and network connector (10), and described signal transceiver (9) is used for connecting Described Profinet communications protocol processes chip (3), and described network connector (10) is used for connecting institute State Profinet communication bus (5).

A kind of embedded type CPU external memory bus extension the most according to claim 3 Profinet bus unit, it is characterised in that: described signal transceiver (9) is that ethernet signal is received Sending out device (9), described network connector (10) is Ethernet RJ45 adapter.

A kind of embedded type CPU external memory bus extension the most according to claim 1 Profinet bus unit, it is characterised in that: described memorizer is FIFO memory.

A kind of embedded type CPU external memory bus extension the most according to claim 1 Profinet bus unit, it is characterised in that: described memorizer and described Communication Control CPU (2) Between connect have data wire, address wire and control line.