CN203733032U - Serial port and Ethernet conversion board - Google Patents
Serial port and Ethernet conversion board Download PDFInfo
- Publication number
- CN203733032U CN203733032U CN201320830754.0U CN201320830754U CN203733032U CN 203733032 U CN203733032 U CN 203733032U CN 201320830754 U CN201320830754 U CN 201320830754U CN 203733032 U CN203733032 U CN 203733032U
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- China
- Prior art keywords
- ethernet
- serial
- processor
- network
- serial ports
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- Expired - Fee Related
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Abstract
The utility model discloses a serial port and Ethernet conversion board. The serial port and Ethernet conversion board comprises an RS422 serial interface circuit connected with an RS422 bus device. The RS422 serial interface circuit is connected with a processor. The processor is connected with a network PHY interface. The network PHY interface is connected with a network transformer. The network transformer is connected with an Ethernet device. A mature hardware circuit is adopted, transparent transmission between a serial port and the Ethernet is achieved through an ingenious software method, and automatic IP address connection and connection of a single-serial-port device and the Ethernet device through a plurality of port numbers are achieved.
Description
Technical field
The utility model relates to the design of the circuit board of changing between a kind of serial ports and Ethernet, particularly a kind of serial ports Ethernet change-over panel.
Background technology
Serial ports Ethernet change-over panel is a kind of equipment of realizing serial equipment and carrying out group-net communication, and this equipment organizes data into protocol format and the serial data form in Ethernet, carries out transparent transmission between serial ports and Ethernet.
Ripe serial ports Ethernet change-over panel is all to adopt with the core that is treated to mac controller substantially at present, is equipped with independently interface circuit and realizes the data communication between serial equipment and ethernet device.
Current serial ports Ethernet is only manually to arrange a fixing target ip address, and a stiff end slogan can only be set, this situation can meet the demands under normal conditions, but do not know target ip address at a serial equipment, and just can not meet the demands need to adopt multiple port numbers to carry out networking time.
Utility model content
The purpose of this utility model is a kind of serial ports Ethernet change-over panel of design, meets single serial equipment and adopts multiterminal slogan to carry out networking and the needs of communicating by letter with the equipment of unknown IP address.
To achieve these goals, the utility model adopts following technical scheme:
A kind of serial ports Ethernet change-over panel, comprises the RS422 serial interface circuit joining with RS422 bus apparatus, and described RS422 serial interface circuit connects processor; Described processor interconnection network phy interface; Described network PHY interface interconnection network transformer, network transformer is connected to ethernet device.
Further, described processor is STM32F107VCT6-100 chip.
Further, described network PHY interface adopts DM9161BIEP chip.
Compared with prior art, the utlity model has following advantage: the utility model uses serial ports Ethernet change-over panel structure, realized single serial equipment and adopted multiterminal slogan to carry out networking and communicate by letter with the equipment of unknown IP address.
Brief description of the drawings
Fig. 1 is the utility model operating circuit theory diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to shown in Fig. 1, serial ports Ethernet change-over panel of the present utility model, comprises the RS422 serial interface circuit 1 joining with RS422 bus apparatus, and RS422 serial interface circuit 1 connects processor 2; Processor 2 interconnection network phy interfaces 3; Network PHY interface 3 interconnection network transformers 4, network transformer 4 is connected to ethernet device.Wherein, processor 2 is STM32F107VCT6-100 chip.Network PHY interface 3 adopts DM9161BIEP chip.
Ethernet device sends data by Ethernet to RS422 serial equipment, first carry out the coupling of signal level through network transformer, after allowing through network PHY interface, complete the access of the physical layer interface of ethernet device, after network PHY interface, enter and manage device everywhere, in processor, complete the control of ethernet mac, and complete the transmission of Ethernet protocol layer and application layer, after processor, the data layout that Ethernet data tissue is become RS422 serial ports by processor sends to RS422 bus apparatus.
On the contrary, serial ports RS422 serial equipment sends data toward Ethernet, first pass through RS422 serial interface circuit, the signal level form that data-switching is become can directly be connected with processor, then processor again by data receiver to according to the form of Ethernet data report, data are sent to ethernet device via network PHY interface and network transformer later.
In the time that ethernet device and RS422 equipment communicate, because Ethernet change-over panel is not known the IP address of ethernet device, therefore, first ethernet device should send an on-line order to Ethernet change-over panel, and Ethernet change-over panel is connected ethernet device according to on-line order with serial ports Ethernet change-over panel.
In the time that RS422 serial equipment sends data to ethernet device, in the data of transmission, must comprise the information of the ethernet side slogan of needs use, therefore, ethernet device can select different passages to send the data to ethernet device according to different port numbers.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by submitted to claims.
Claims (3)
1. a serial ports Ethernet change-over panel, is characterized in that, comprises the RS422 serial interface circuit (1) joining with RS422 bus apparatus, and described RS422 serial interface circuit (1) connects processor (2); Described processor (2) interconnection network phy interface (3); Described network PHY interface (3) interconnection network transformer (4), network transformer (4) is connected to ethernet device.
2. serial ports Ethernet change-over panel as claimed in claim 1, is characterized in that, described processor (2) is STM32F107VCT6-100 chip.
3. serial ports Ethernet change-over panel as claimed in claim 1, is characterized in that, described network PHY interface (3) adopts DM9161BIEP chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830754.0U CN203733032U (en) | 2013-12-16 | 2013-12-16 | Serial port and Ethernet conversion board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830754.0U CN203733032U (en) | 2013-12-16 | 2013-12-16 | Serial port and Ethernet conversion board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733032U true CN203733032U (en) | 2014-07-23 |
Family
ID=51203091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320830754.0U Expired - Fee Related CN203733032U (en) | 2013-12-16 | 2013-12-16 | Serial port and Ethernet conversion board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733032U (en) |
-
2013
- 2013-12-16 CN CN201320830754.0U patent/CN203733032U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140723 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |