CN205038639U - RS485 communication interface with lightning protection function - Google Patents
RS485 communication interface with lightning protection function Download PDFInfo
- Publication number
- CN205038639U CN205038639U CN201520781762.XU CN201520781762U CN205038639U CN 205038639 U CN205038639 U CN 205038639U CN 201520781762 U CN201520781762 U CN 201520781762U CN 205038639 U CN205038639 U CN 205038639U
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- Prior art keywords
- communication interface
- lightning protection
- base
- protection function
- resistance
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Abstract
The utility model discloses a RS485 communication interface with lightning protection function, including circuit main part, top lid, base, its characterized in that, the main part is connected on the base, blankets the top in the main part again to be connected with the base, form an organic whole, the main part connect exactly earthing terminal, input module wiring end, output module wiring end, switching device, resistance, diode, emitting diode, removal rings, waterproof aviation insert on the circuit board, through the wiring, make its forming circuit, have the bus and cut apart concentratedly, industrial grade lightning protection technique, increase the RS485 terminating resistance, effectively restrain RS485 bus echo disturbance.
Description
Technical field
The utility model relates to instrument, instrument, the RS485 communication technique field of industrial control product, particularly relates to a kind of RS485 communication interface with lightning protection function.
Background technology
In Industry Control occasion, RS485 bus because of its interface simple, networking is convenient, features such as long transmission distance and being used widely.RS485 with RS232 is the same is all communication interface based on serial ports, and the operation of data transmit-receive is consistent, so use the bsp driver of same WinCE.But they in actual applications communication mode but have very large difference, RS232 interface is full-duplex data communication mode, and RS485 interface is half-duplex data communication mode, the transmitting-receiving of data can not be carried out simultaneously, in order to ensure not conflicting of data transmit-receive, hardware is switched by direction and realizes, corresponding also requirement must strictly be separated by software by the process of transmitting-receiving.
RS-485 interface uses quite general in Industry Control, what adopt is all main bus hanging model structure connected mode, multiple joint is had to need to weld according to HandbyHand mode in a set of equipment, due to manual welding quality and Joint Welding requirement, often weld is lack of standardization and attractive in appearance, very large on communication quality impact.Present equipment has regulation to lightning protection, generally need install Anti-surging additional in RS485 point of incoming cables, thus bring great inconvenience to construction, so need a kind of in-site installation easy-to-connect to have again the communication interface of lightning protection function.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of RS485 communication interface with lightning protection function.
The technical scheme that the utility model adopts is:
A kind of RS485 communication interface with lightning protection function, comprise circuit main body, top cover, base, described base adopts engineering plastics to make, main body is connected on base, again top cover is covered in main body, and be connected with base, form one, wherein said main body includes circuit board, earth terminal, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, be exactly connect earth terminal on circuit boards, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, pass through wiring, it is made to form circuit.
Further, described in open and device, have integrated protection mode, i.e. switching mode protected mode and votage limit type protected mode.
Further, described resistance passes through toggle switch, configurating terminal resistance.
Further, described waterproof aviation is inserted communication interface and is adopted DB9 type industry interface mode, meets device requirement, when there being communication signal, and pilot lamp flash for prompting.
Compared with prior art, the beneficial effects of the utility model are:
Bus segments is concentrated: owing to adopting modular approach to make, without the need to changing equipment itself, the equipment of the equipment or zones of different that just can realize difference in functionality is treated respectively, and forms separate different segment.Not only increase the reliability of system, and shorten the maintenance time of system greatly.
Technical grade shocking preventing technology: at industrial control field; signal line also has Anti-surging requirement; nominal discharge current >0.5KA; withstand voltage 0.5KV; nominal discharge current=10KA that design proposal provides, voltage 0.6KV, for RS485 signal characteristic; the Transient Suppression Diode increased, the device security on the more effective protection circuit RS485 of energy.
Add RS485 terminal resistance, effectively can suppress RS485 bus echo interference.
Accompanying drawing explanation
Fig. 1 is a kind of circuit arrangement schematic diagram with the RS485 communication interface of lightning protection function.
Embodiment
A kind of RS485 communication interface with lightning protection function, comprise circuit main body 1, top cover 3, base 2, described base 2 adopts engineering plastics to make, main body 1 is connected on base 2, again top cover 3 is covered on the body 1, and be connected with base 2, form one, wherein said main body 1 includes circuit board, earth terminal, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, be exactly connect earth terminal on circuit boards, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, pass through wiring, it is made to form circuit.
Further, described in open and device, have integrated protection mode, i.e. switching mode protected mode and votage limit type protected mode.
Further, described resistance passes through toggle switch, configurating terminal resistance.
Further, described waterproof aviation is inserted communication interface and is adopted DB9 type industry interface mode, meets device requirement, when there being communication signal, and pilot lamp flash for prompting.
Further, critical technical parameter: device physical dimension: long 88mm, thickness 25mm, height 85mm; Device case material: ABS plastic; Floor installation mode: guide rail U35 installs; Interface quantity: 4 mouthfuls; Communication mode: asynchronous half-duplex (both-way communication); Lightning protection function: the surge that can carry 10KA under the test environment of 8/20us waveform; Clamping voltages 25.2V protects voltage 17.1 ~ 18.9V.
Claims (4)
1. one kind has the RS485 communication interface of lightning protection function, comprise circuit main body, top cover, base, it is characterized in that, described base adopts engineering plastics to make, main body is connected on base, again top cover is covered in main body, and be connected with base, form one, wherein said main body includes circuit board, earth terminal, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, be exactly connect earth terminal on circuit boards, load module terminals, output module terminals, switchgear, resistance, diode, light emitting diode, mobile suspension ring, waterproof aviation is inserted, pass through wiring, it is made to form circuit.
2. a kind of RS485 communication interface with lightning protection function according to claim 1, is characterized in that, described in open and device, have integrated protection mode, i.e. switching mode protected mode and votage limit type protected mode.
3. a kind of RS485 communication interface with lightning protection function according to claim 1, is characterized in that, described resistance by toggle switch, configurating terminal resistance.
4. a kind of RS485 communication interface with lightning protection function according to claim 1, is characterized in that, described waterproof aviation is inserted communication interface and adopted DB9 type industry interface mode, meets device requirement, when there being communication signal, and pilot lamp flash for prompting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781762.XU CN205038639U (en) | 2015-10-09 | 2015-10-09 | RS485 communication interface with lightning protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781762.XU CN205038639U (en) | 2015-10-09 | 2015-10-09 | RS485 communication interface with lightning protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205038639U true CN205038639U (en) | 2016-02-17 |
Family
ID=55297523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781762.XU Expired - Fee Related CN205038639U (en) | 2015-10-09 | 2015-10-09 | RS485 communication interface with lightning protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205038639U (en) |
-
2015
- 2015-10-09 CN CN201520781762.XU patent/CN205038639U/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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 236200 Anhui city of Fuyang province Yingshang County Industrial Park Patentee after: XING'AN ANHUI ELECTRIC LIMITED BY SHARE LTD. Address before: 236200 Anhui city of Fuyang province Yingshang County Industrial Park Patentee before: Anhui Xing'an Electrical Equipment Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20171009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |