CN202906948U - Communication apparatus based on modbus_RTU bus - Google Patents
Communication apparatus based on modbus_RTU bus Download PDFInfo
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- CN202906948U CN202906948U CN 201220579168 CN201220579168U CN202906948U CN 202906948 U CN202906948 U CN 202906948U CN 201220579168 CN201220579168 CN 201220579168 CN 201220579168 U CN201220579168 U CN 201220579168U CN 202906948 U CN202906948 U CN 202906948U
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Abstract
The utility model relates to the field of communication, and specifically relates to a communication apparatus based on a modbus_RTU bus. According to the utility model, a highly efficient communication platform can be provided by the apparatus, thereby meeting the real-time requirements of communication. The apparatus comprises a host computer and a plurality of slave computers, and the slave computers are in communication with the host computer by the modbus_RTU bus.
Description
Technical field
The utility model belongs to the communications field, relates to a kind of efficient communication device based on the modbus_RTU bus, is mainly used in the fields such as power automation, oil, chemical industry, industry control.
Background technology
Along with the development of electric power system and the in-depth of power system reform, more participant in the market requires to use dispatch automated system to carry out the operations such as information reporting and inquiry, and this just has higher requirement to the message transmission capability of real time data.Existing MODBUS adopts poll inquiry mechanism, affects the efficient of communication, and when having in a large number from equipment, the poll week age is very long, has a strong impact on real-time.The main problem that exists is that real-time is poor at present, can't satisfy the requirement of communication efficiency.
Summary of the invention
The utility model purpose is to address the above problem, and a kind of communication device based on the modbus_RTU bus is provided, and this device provides a kind of efficient communication platform, to satisfy the requirement of real-time of communication.
The technical solution of the utility model is as follows:
A kind of communication device based on the modbus_RTU bus, this device comprises a main frame and some slaves, described each slave is connected with described host communication by the modbus_RTU bus respectively.
Wherein, described slave comprises three to ten.
Described slave specifically can be five.
The utlity model has following advantage:
Communication device of the present utility model, its main frame is connected by the modbus_RTU bus with slave, and slave can send data to main frame as required at any time.
Main frame and slave can be equipped with corresponding software, and slave can shift to an earlier date and just is ready to the data that need to send, and during this slave, it is the fast return data that slave detects, and has improved like this speed of communication, has improved the utilance of bus during the main frame calling.
This device can be applicable to the communication, remote monitoring of data, the long-range aspect such as arrange.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with Figure of description the utility model is further specified.
Embodiment one:
Such as Fig. 1, the communication device based on the modbus_RTU bus of the present utility model comprises a main frame and 5 slaves, and 5 slaves carry out communication by modbus_RTU bus and main frame respectively and are connected.Every slave can transmit data to main frame respectively.
Wherein main frame can for computer, palmtop PC or a smart mobile phone or.
Wherein slave can be common computer.
Embodiment two:
Communication device based on the modbus_RTU bus of the present utility model can be equipped with corresponding software, and is with the realization real-time communication, specific as follows:
Main frame mainly comprises the calling module.
Each slave mainly comprises reception and parsing module, memory module, acquisition module and feedback module.
The calling module of main frame is sent calling signal to slave.
The reception of each slave and parsing module are used for the calling signal that Receiving Host sends over, and parse the slave addresses of being called from calling signal;
The acquisition module of slave be used for to gather the data message of this TV station slave, and call for the first time complete after, prepare the next time data message of calling, upgrade constantly data message;
Memory module is stored first calling signal, and the data message of acquisition module;
Main frame sends calling signal first by the calling module, and all slaves receive, resolve and preserve corresponding order.In the collection of normal data, main frame sends acquisition, and slave receives data and the comparison command on all buses, and then corresponding slave response and return data are to main frame, and host receiving data information is storage also, and main frame can be to data call or the demonstration that receives.
Main frame adopts the polling mode calling from machine data, main frame sends the information such as slave addresses and function code to slave, wait for 200ms, send next equipment calling signal, and from equipment prepared data are uploaded to main frame fast, adopt this mode main frame identical with conventional operation in the calling data first time, call for the first time complete after, slave will be ready to the data of next time main frame calling in advance, and the data that the slave real-time update need to be uploaded, the exchange rate of data will improve greatly like this.So just improved the efficient of bus, so that the renewal real-time of data is higher.
Claims (3)
1. communication device based on the modbus_RTU bus, it is characterized in that: this device comprises a main frame and some slaves, described each slave is connected with described host communication by the modbus_RTU bus respectively.
2. the efficient communication device based on the modbus_RTU bus according to claim 1, it is characterized in that: described slave comprises three to ten.
3. the efficient communication device based on the modbus_RTU bus according to claim 2, it is characterized in that: described slave comprises five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579168 CN202906948U (en) | 2012-11-06 | 2012-11-06 | Communication apparatus based on modbus_RTU bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579168 CN202906948U (en) | 2012-11-06 | 2012-11-06 | Communication apparatus based on modbus_RTU bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202906948U true CN202906948U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220579168 Expired - Lifetime CN202906948U (en) | 2012-11-06 | 2012-11-06 | Communication apparatus based on modbus_RTU bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202906948U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007209A (en) * | 2015-06-04 | 2015-10-28 | 烟台东方威思顿电气股份有限公司 | RS485-based polling communication method |
| CN109412916A (en) * | 2018-10-16 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of CAN bus based means of communication and the equipment using the means of communication |
-
2012
- 2012-11-06 CN CN 201220579168 patent/CN202906948U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007209A (en) * | 2015-06-04 | 2015-10-28 | 烟台东方威思顿电气股份有限公司 | RS485-based polling communication method |
| CN105007209B (en) * | 2015-06-04 | 2018-07-31 | 烟台东方威思顿电气有限公司 | A kind of poll means of communication based on RS485 |
| CN109412916A (en) * | 2018-10-16 | 2019-03-01 | 珠海格力电器股份有限公司 | A kind of CAN bus based means of communication and the equipment using the means of communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |