CN201867802U - Serial communication protocol converter - Google Patents
Serial communication protocol converter Download PDFInfo
- Publication number
- CN201867802U CN201867802U CN2010205916030U CN201020591603U CN201867802U CN 201867802 U CN201867802 U CN 201867802U CN 2010205916030 U CN2010205916030 U CN 2010205916030U CN 201020591603 U CN201020591603 U CN 201020591603U CN 201867802 U CN201867802 U CN 201867802U
- Authority
- CN
- China
- Prior art keywords
- transceiver
- interface
- model
- baud rate
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004891 communication Methods 0.000 title abstract description 15
- 230000003287 optical effect Effects 0.000 abstract 3
- 238000002955 isolation Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
Landscapes
- Communication Control (AREA)
Abstract
The utility model relates to serial communication equipment and discloses a serial communication protocol converter which comprises a DB9 interface, an RS-232 transceiver, optical couplers, a Baud rate self-adaptive module, an RS-422/485 transceiver and an RS-422/485 interface, wherein the DB9 interface is connected with the RS-232 transceiver, the RS-232 transceiver is connected with the Baud rate self-adaptive module through one optical coupler, the Baud rate self-adaptive module is connected with the RS-422/485 transceiver, the RS-422/485 transceiver is connected with the RS-422/485 interface, and the RS-232 transceiver is connected with the RS-422/485 transceiver through the other optical coupler. The serial communication protocol converter has a photoelectric isolation function and an anti-surge function, and can adapt to any communication speed of an RS-422/485 bus used in an industrial field.
Description
Technical field
The utility model relates to a kind of serial communication equipment, is specifically related to a kind of serial port communicating protocol converter.
Background technology
Serial ports is a kind of very general devices communicating agreement on the computing machine, is used to obtain the data of remote collection equipment.The contrast RS-232 interface only can realize point-to-point communication mode, and transmission range is 15 meters only, and RS-422 can better antinoise and farther transmission range is arranged in industrial environment.RS-485 (EIA-485 standard) is the improvement of RS-422, uses the RS-485 bus, and a pair of twisted-pair feeder just can be realized the multistation networking, constitute distributed system, and equipment is simple, cheap, can carry out long haul communication, thereby has obtained using widely.But based on serial communication, realizing RS-232 and RS-422/485 conversion, is the problem that needs solution at present.
The utility model content
The purpose of this utility model provides a kind ofly to be had photoelectricity and isolates and prevent the surge function, can be adapted to the serial port communicating protocol converter that industry spot is used any communication speed of RS-422/485 bus.
In order to achieve the above object, the utility model has following technical scheme:
A kind of serial port communicating protocol converter of the present utility model, comprise DB9 interface, RS-232 transceiver, optocoupler, baud rate self-adapting module, RS-422/485 transceiver, RS-422/485 interface, described DB9 interface is connected with the RS-232 transceiver, the RS-232 transceiver is connected with the baud rate self-adapting module by optocoupler, the baud rate self-adapting module is connected with the RS-422/485 transceiver, the RS-422/485 transceiver is connected with the RS-422/485 interface, and the RS-232 transceiver also is connected with the RS-232 transceiver by optocoupler.
Owing to taked above technical scheme, advantage of the present utility model is:
1, the utlity model has photoelectricity and isolate and prevent the surge function, can effectively isolate 3KV voltage, reduced the infringement that thunderbolt, power network fluctuation etc. cause communication link and commercial unit widely.
2, the utility model can be realized RS-232 and RS-422/485 conversion, can be adapted to any communication speed that industry spot is used the RS-422/485 bus.
Description of drawings
Fig. 1 is a structure block diagram of the present utility model.
Embodiment
Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Referring to Fig. 1, a kind of serial port communicating protocol converter of the present utility model, form by DB9 interface, RS-232 transceiver, optocoupler, baud rate self-adapting module, RS-422/485 transceiver, RS-422/485 interface, wherein, described DB9 interface is connected with the RS-232 transceiver, the RS-232 transceiver is connected with the baud rate self-adapting module by optocoupler, the baud rate self-adapting module is connected with the RS-422/485 transceiver, the RS-422/485 transceiver is connected with the RS-422/485 interface, and the RS-232 transceiver also is connected with the RS-232 transceiver by optocoupler.
The utility model optocoupler adopts the optocoupler of model 6N137.
The self-adaptation of baud rate of the present utility model: in industry spot was used, the communication speed of RS-422/485 bus was generally 2400～115200bps.With a Frame time width is the unit, different baud rates, the time width of control RS-422/485 transceiver reiving/transmitting state is also different, so communication speed difference of RS-422/485 bus, the time width of control RS-422/485 transceiver reiving/transmitting state need be set, be used the traffic rate of RS-422/485 bus to adapt to.
In the baud rate self-adapting module, and Rx * Cx (Rx: resistance, Cx: Jue Ding delay time width Trc electric capacity), select to be advisable less than the time width of the data bit of the high bit rate (as 115200bps) of RS-485 bus.The time width of control RS-485 transceiver reiving/transmitting state is all the time than the big Trc of transmission data low level width in the bus, and delay time width Trc can be greater than the time width of a data bit of any baud rate.So converter of the present utility model is adapted to any communication speed that industry spot is used the RS-422/485 bus.
Referring to Fig. 1, during the utility model work, if being flowed to RS-422/485 from the RS-232 end, serial data regards transmission as, data receive the data input RS-232 transceiver that PC is sent through DB9 serial port so, send into the baud rate self-adapting module through optocoupler again, select to send into the RS-422/485 transceiver after the suitable baud rate, output to the RS-422/485 interface at last.Reception condition is that data transfer direction is opposite, and process is similar.
The utility model volume is little, behaviour does easyly, flexible and convenient to use, is suitable for multiple occasion and uses.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that the technical solution of the utility model extends out or change still are in protection domain of the present utility model.
Claims (1)
1. serial port communicating protocol converter, it is characterized in that: comprise DB9 interface, RS-232 transceiver, optocoupler, baud rate self-adapting module, RS-422/485 transceiver, RS-422/485 interface, described DB9 interface is connected with the RS-232 transceiver, the RS-232 transceiver is connected with the baud rate self-adapting module by optocoupler, the baud rate self-adapting module is connected with the RS-422/485 transceiver, the RS-422/485 transceiver is connected with the RS-422/485 interface, and the RS-232 transceiver also is connected with the RS-232 transceiver by optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205916030U CN201867802U (en) | 2010-11-04 | 2010-11-04 | Serial communication protocol converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205916030U CN201867802U (en) | 2010-11-04 | 2010-11-04 | Serial communication protocol converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867802U true CN201867802U (en) | 2011-06-15 |
Family
ID=44138954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205916030U Expired - Fee Related CN201867802U (en) | 2010-11-04 | 2010-11-04 | Serial communication protocol converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594930A (en) * | 2012-02-27 | 2012-07-18 | 中国人民解放军92859部队 | Distributed marine surveying monitoring system based on wireless digital transmission technique |
| CN111856522A (en) * | 2020-06-24 | 2020-10-30 | 深圳航天东方红海特卫星有限公司 | High-speed serial port power supply integrated tester for microsatellite |
-
2010
- 2010-11-04 CN CN2010205916030U patent/CN201867802U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594930A (en) * | 2012-02-27 | 2012-07-18 | 中国人民解放军92859部队 | Distributed marine surveying monitoring system based on wireless digital transmission technique |
| CN111856522A (en) * | 2020-06-24 | 2020-10-30 | 深圳航天东方红海特卫星有限公司 | High-speed serial port power supply integrated tester for microsatellite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205320075U (en) | Multi -service digit optical transmitter and receiver based on optic fibre ethernet | |
| CN111162815B (en) | Full-duplex communication circuit and full-duplex communication device | |
| CN106873513A (en) | A kind of PLC system and its principal and subordinate link structure | |
| CN201867802U (en) | Serial communication protocol converter | |
| CN209676263U (en) | A kind of intelligent gateway based on all-optical network transmission | |
| CN202696655U (en) | Multi-interface to E1 protocol converter | |
| CN203618007U (en) | Multichannel Ethernet cable extender main terminal with optical port | |
| CN202602676U (en) | A CAN signal transmission circuit | |
| CN204129454U (en) | A kind of data conversion adaptive circuit and electronic equipment | |
| CN204795081U (en) | Intelligence house KNX gateway | |
| CN203057176U (en) | RS485 active bus isolation driver | |
| CN102752027A (en) | Pure flooding adaptive low-voltage power line carrier communication unit | |
| CN201533316U (en) | Power-line carrier adapter and power-line carrier communication equipment provided therewith | |
| CN203759694U (en) | Serial port networking communication device | |
| CN203243324U (en) | General power line carrier wave device | |
| CN202126687U (en) | RS485 bus interface circuit | |
| CN201266317Y (en) | On-site bus serial communication and Ethernet ascendency complementary system | |
| CN204993338U (en) | Data buffering device based on carrier communication | |
| CN201830275U (en) | Repeater based on serial communication | |
| CN204334574U (en) | Convergent type UNI optical access device | |
| CN105159266A (en) | Center control host of smart home control system | |
| CN105245251B (en) | A kind of data buffering method based on carrier communication | |
| CN103595689A (en) | Multi-interface to E1 protocol converter | |
| CN204119238U (en) | The two light mouth fiber optical transceiver of 2FX-4FE | |
| CN205081316U (en) | USB3. 0 extension line |
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: 20110615 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |