CN202737903U - RS485-to-Ethernet and CAN-to-Ethernet device - Google Patents
RS485-to-Ethernet and CAN-to-Ethernet device Download PDFInfo
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- CN202737903U CN202737903U CN 201220412289 CN201220412289U CN202737903U CN 202737903 U CN202737903 U CN 202737903U CN 201220412289 CN201220412289 CN 201220412289 CN 201220412289 U CN201220412289 U CN 201220412289U CN 202737903 U CN202737903 U CN 202737903U
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Abstract
The utility model provides an RS485-to-Ethernet and CAN-to-Ethernet device, which comprises a control module, an RS 485 chip, a CAN chip, a serial interface chip, a power supply module, a file storage module, a data storage module, a real-time clock and a network interface chip. The control module is connected with the RS 485 chip, the CAN chip, the serial interface chip, the power supply module, the file storage module, the data storage module, the real-time clock and the network interface chip. According to the technical scheme of the utility model, both the conversion of RS485 protocol to Ethernet protocol and the conversion of CAN protocol to Ethernet protocol are realized by means of the device. Thus, the device realizes three communication modes and is programmable, thereby enlarging the application range of the device.
Description
Technical field
The utility model relates to the field bus technique field, and especially a kind of RS485 and CAN turn the device of Ethernet protocol.
Background technology
Field bus technique is applied in data acquisition and the control field of equipment widely at present, because the disunity of equipment interface, often need the different agreement conversion equipment to carry out the conversion of data format, reach the purpose of data acquisition and control, the existing protocol conversion equipment is only supported the conversion of RS232/RS485 and Ethernet protocol or is only supported the conversion of CAN agreement and Ethernet protocol, and the on-the-spot electromagnetic interference of enterprise is serious, affects communication effect.
The utility model content
Problem to be solved in the utility model is to realize the conversion of RS485 and Ethernet protocol; The conversion of CAN agreement and Ethernet protocol; The apparatus system parameter is configurable.
For solving the problems of the technologies described above, the utility model provides a kind of RS485 and CAN to turn Ethernet device, comprises control module, RS485 chip, CAN chip, serial port chip, power module, file storage module, data memory module, real-time clock, network interface chip;
Wherein said control module is connected with RS485 chip, CAN chip, serial port chip, power module, file storage module, data memory module, real-time clock, network interface chip;
Described power module is used for power supply;
Described file storage module and data memory module are used for the information of storage industry equipment;
Described real-time clock is used for timing;
Described network interface chip is used for connecting optical fiber ring network;
Described control module is used for receiving and the issue acquisition, adjusts self system time, reception, parsing, storage and transmitting apparatus feedack.
Described control module also is connected with cache chip, is used for buffered data.
Described CAN chip is connected by the CAN transceiver with the CAN interface, and the CAN interface is connected with Field Bus CAN.
Described RS485 chip is connected by 485 interfaces with on-the-spot 485 buses.
Described serial port chip is connected with 232 interfaces.
This utility model can be controlled the blanking time of RS485 frame ordering, thus the data rate of indirectly control ethernet side; Adaptively selected transmission speed 10Mb/s and 100Mb/s; Realized the conversion of Modbus agreement and ModbusTCP agreement; Realize the conversion of CAN agreement and ModbusTCP agreement; User-programmable has increased the scope of application of installing.
Description of drawings
Fig. 1 is that RS485 of the present utility model and CAN turn the Ethernet device schematic diagram.
Fig. 2 is that the utility model RS485 and CAN turn the Ethernet device operational flowchart.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is made detailed description.
As shown in Figure 1, the device that the utility model provides a kind of RS485 and CAN to turn Ethernet protocol, a kind of user-programmable more precisely becomes Modbus agreement and CAN protocol conversion the converter device of ICP/IP protocol.Belong to the field bus technique field.Described RS485 and CAN turn Ethernet device and comprise RS485 chip MAX485 (110), CAN chip MCP2510 (120), CAN transceiver PCA82C250, serial port chip MAX232 (130), cache chip, ARM chip PXA255 (150), file storage module (160), data memory module (170), real-time clock (180), power module (140), network interface chip CS8900 (190), network interface.Wherein said CPU(PXA255) be connected with described RS485 chip MAX485 (110), described CAN chip MCP2510 (120), described serial port chip MAX232 (130), described cache chip, described file storage module (160), described data memory module (170), described real-time clock (180), described power module (140), described network interface chip CS8900 (190) respectively, described CAN transceiver PCA82C250 is connected with described CAN chip MCP2510 (120).
The first step is connected to on-the-spot 485 buses or CAN bus with 485 interfaces or CAN interface, and network interface is connected with switch or hub, finishes the physical connection of agreement converter device and equipment; Second step by 232 interfaces, is finished the initiation parameter setting to device, satisfies the requirement of field apparatus.The initialization setting of finishing device comprises the setting of baud rate to 485 chips, position of rest, data bit, verification mode and to the setting of the network-related parameters such as the IP address of network interface, gateway, DNS.The mode cardinal principle that arranges is that parameter is write the register corresponding with 485 chips and network interface by serial ports, thereby is mapped to 485 chips and network interface chip; The 3rd step started the protocol conversion control program, carried out protocol conversion work.
Fig. 2 is the main flow of this conversion equipment program.Whether start protocol conversion apparatus, listing option needs to carry out the parameter setting, if it is lists for the option that arranges, to arrange for the user, if otherwise read default parameters, the initial work of the network interface in the finishing device, 485 chips and CAN chip.The operational mode of user selection device, three kinds of patterns are arranged: 485-RTU pattern, 485-ASCII pattern and CAN pattern, start protocol convertor, receive the order data that network interface arrives, obtain the address that order is transmitted, the initial address of parameter, the information such as data length, calculate corresponding check code, be combined into corresponding command frame, sent by corresponding chip.If user selection withdrawed from then quit work this moment, if do not select to withdraw from then loop protocol conversion work.
Claims (5)
1. a RS485 and CAN turn Ethernet device, it is characterized in that, comprise control module, RS485 chip, CAN chip, serial port chip, power module, file storage module, data memory module, real-time clock, network interface chip;
Wherein said control module is connected with RS485 chip, CAN chip, serial port chip, power module, file storage module, data memory module, real-time clock, network interface chip;
Described power module is used for power supply;
Described file storage module and data memory module are used for the information of storage industry equipment;
Described real-time clock is used for timing;
Described network interface chip is used for connecting optical fiber ring network;
Described control module is used for receiving and the issue acquisition, adjusts self system time, reception, parsing, storage and transmitting apparatus feedack.
2. RS485 according to claim 1 and CAN turn Ethernet device, it is characterized in that, described control module also is connected with cache chip, are used for buffered data.
3. turn Ethernet device according to right 1 or 2 described RS485 and CAN, it is characterized in that, described CAN chip is connected by the CAN transceiver with the CAN interface, and the CAN interface is connected with Field Bus CAN.
4. turn Ethernet device according to right 1 or 2 described RS485 and CAN, it is characterized in that, described RS485 chip is connected by 485 interfaces with on-the-spot 485 buses.
5. turn Ethernet device according to right 1 or 2 described RS485 and CAN, it is characterized in that, described serial port chip is connected with 232 interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412289 CN202737903U (en) | 2012-08-17 | 2012-08-17 | RS485-to-Ethernet and CAN-to-Ethernet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412289 CN202737903U (en) | 2012-08-17 | 2012-08-17 | RS485-to-Ethernet and CAN-to-Ethernet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737903U true CN202737903U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220412289 Expired - Lifetime CN202737903U (en) | 2012-08-17 | 2012-08-17 | RS485-to-Ethernet and CAN-to-Ethernet device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202737903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716217A (en) * | 2013-12-24 | 2014-04-09 | 安徽旗翔科技发展有限公司 | Intelligent data repeater based on CAN bus technology |
| CN115053495A (en) * | 2020-01-30 | 2022-09-13 | 菲尼克斯电气公司 | SPE-based device adapter for connecting non-Ethernet enabled field devices to an Ethernet-based process control system |
-
2012
- 2012-08-17 CN CN 201220412289 patent/CN202737903U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716217A (en) * | 2013-12-24 | 2014-04-09 | 安徽旗翔科技发展有限公司 | Intelligent data repeater based on CAN bus technology |
| CN115053495A (en) * | 2020-01-30 | 2022-09-13 | 菲尼克斯电气公司 | SPE-based device adapter for connecting non-Ethernet enabled field devices to an Ethernet-based process control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINGWEI RUANXIN TECHNOLOGY WUXI CO., LTD. Free format text: FORMER OWNER: BEIJING JINGWEI TEXTILE MACHINERY NEW TECHNOLOGY CO., LTD. Effective date: 20141124 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100176 DAXING, BEIJING TO: 214135 WUXI, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20141124 Address after: 214135 Jiangsu New District of Wuxi, Taihu international science and Technology Parks Linghu Road No. 200 China sensor network innovation park E2 421 Patentee after: JINGWEI RUANXIN TECHNOLOGY WUXI Co.,Ltd. Address before: 100176 Daxing District economic and Technological Development Zone, Yongchang Road, No. 8, No. Patentee before: BEIJING JINGWEI TEXTILE MACHINERY NEW TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20190123 Address after: 100176 Yuncheng Street, Daxing Economic and Technological Development Zone, Beijing Patentee after: BEIJING JINGWEI TEXTILE MACHINERY NEW TECHNOLOGY Co.,Ltd. Address before: 214135 China Sensor Network Innovation Park E2-421, 200 Linghu Avenue, Taihu International Science Park, Wuxi New District, Jiangsu Province Patentee before: JINGWEI RUANXIN TECHNOLOGY WUXI Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
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| CX01 | Expiry of patent term |