CN203812237U - Bus control module - Google Patents
Bus control module Download PDFInfo
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- CN203812237U CN203812237U CN201320849921.6U CN201320849921U CN203812237U CN 203812237 U CN203812237 U CN 203812237U CN 201320849921 U CN201320849921 U CN 201320849921U CN 203812237 U CN203812237 U CN 203812237U
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- control module
- bus
- chip
- bus control
- microcontroller
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- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims description 18
- 238000002955 isolation Methods 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
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Abstract
The utility model discloses a bus control module. The bus control module comprises a protocol chip, a micro controller and an opto-coupling and separating circuit, wherein by a two-wire form bus, a DP (displayport) interface module is connected to the protocol chip in which a PROFIBUS-DP (process field bus-displayport) protocol is integrated; the micro controller is connected with the protocol chip through a parallel chip; the opto-coupling and separating circuit is respectively connected with the micro controller and a meter. A field bus is controlled by the PROFIBUS-DP protocol, and the PROFIBUS-DP protocol substitutes 4 to 20mA signal transmission, so that high-speed and low-cost communication is realized; furthermore, the PROFIBUS-DP protocol can realize control on and communication between field equipment and a disperse I/O (input/output), so that remote operation and remote control are realized.
Description
Technical field
The utility model relates to bus control field, especially relates to a kind of bus control module.
Background technology
At present, industry spot adopts the transmission of 4～20mA signal conventionally, and 4～20mA signal transmission technology is the industrial control system that adopts analog control mode.
And there is the problems such as antijamming capability is weak, maintenance cost is high in the signal transmission technology of 4～20mA.
Therefore, present industrial field control module is needed badly and is solved this technical matters.
Utility model content
In view of this, the utility model provides a kind of bus control module, with solve the transmission of industrial field control module in prior art there is antijamming capability a little less than, problem that maintenance cost is high.Its concrete scheme is as follows:
A bus control module, is connected with instrument, and application PROFIBUS-DP agreement, comprising:
By two-wire system bus, be connected with peripheral DP interface module, inside is integrated with the protocol chip of PROFIBUS-DP agreement;
The microcontroller being connected with described protocol chip by parallel bus;
The optical coupling isolation circuit being connected with described microcontroller and instrument respectively.
Further, also comprise:
The storage chip being connected with described microcontroller.
Further, described storage chip is: EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM.
Further, described storage chip and described microprocessor pass through I
2c interface is connected.
Further, described protocol chip is specially: inside is integrated with the SPC4-2 chip of PROFIBUS-DP agreement.
Further, described SPC4-2 chip comprises: RTS port, transmit port, receiving port.
Further, described microcontroller is: M16C type microcontroller.
Further, described microcontroller is specially: M30626FHPFP.
Further, described microcontroller, by optical coupling isolation circuit, adopts MODBUS agreement to be connected with the processor of described instrument.
Further, the parallel bus between described microcontroller and protocol chip comprises:
8 bit data bus, 10 bit address bus and control ports.
The beneficial effect that above-mentioned bus control module brings is: in the utility model, by two-wire system bus, DP interface module is connected to the protocol chip that inside is integrated with PROFIBUS-DP agreement, the microcontroller being connected with protocol chip by parallel bus, respectively at microcontroller and the connected optical coupling isolation circuit of instrument.This programme by PROFIBUS-DP agreement, realize field apparatus and dispersion peripherals control with communicate by letter and remote control, by PROFIBUS-DP agreement, replaced the transmission of 4～20mA signal, realized low-cost communication at a high speed, in addition, the control that PROFIBUS-DP agreement can realize field apparatus and distributing I/O with communicate by letter, realize long-range and control.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of bus control module of the utility model;
Fig. 2 is the structural representation of the disclosed a kind of bus control module of the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The disclosed a kind of bus control module of the utility model, is connected with instrument, application PROFIBUS-DP agreement, and its structural representation as shown in Figure 1, comprising:
DP(Decentralized Peripherals, peripherals) interface module 11, protocol chip 12, microcontroller 13, optical coupling isolation circuit 14.
DP interface module 11 is connected with protocol chip 12 by two-wire system bus.
Wherein, protocol chip 12 inside are integrated with PROFIBUS-DP agreement.
Protocol chip 12 is connected with microcontroller 13 by parallel bus, and microcontroller 13 is connected with optical coupling isolation circuit 14, and optical coupling isolation circuit 14 is connected with instrument.
Wherein, the isolation processing that optical coupling isolation circuit 14 is realized signal.
Optical coupling isolation circuit specifically can adopt high speed photo coupling chip, i.e. HCPL7721 and HCPL0601.
The disclosed bus control module of the present embodiment, by two-wire system bus, DP interface module is connected to the protocol chip that inside is integrated with PROFIBUS-DP agreement, the microcontroller being connected with protocol chip by parallel bus, respectively at microcontroller and the connected optical coupling isolation circuit of instrument.This programme by PROFIBUS-DP agreement, realize fieldbus and dispersion peripherals control with communicate by letter and remote control, controller (as PC, PLC) is connected with the field apparatus disperseing and is communicated by Fast Sequential, the exchanges data circulating, and exchange needed communication function for loop-around data, by DP basic function, stipulate.By PROFIBUS-DP agreement, replaced 4～20mA signal transmission, realized low-cost communication at a high speed, in addition, the control that PROFIBUS-DP agreement can realize field apparatus and distributing I/O with communicate by letter, realize long-range and control.
Preferably, in the disclosed bus control module of the present embodiment, protocol chip 12 is specifically as follows SPC4-2 chip.
SPC4-2 chip is that the mode by interrupting is carried out exchanges data, has improved the corresponding speed of microcontroller.
Wherein, SPC4-2 chip specifically comprises: RTS port, transmit port, receiving port.
Transmit port arrives instrument by optical coupling isolation circuit 14, by Instrument connection external bus; Receiving port to instrument, arrives external bus by Instrument connection by optical coupling isolation circuit 14; RTS port is connected to instrument by optical coupling isolation circuit 14, and instrument is done the switching of send and receive according to RTS signal.
Further, in the disclosed bus control module of the present embodiment, microcontroller 13, by optical coupling isolation circuit 14, adopts MODBUS agreement to be connected with the processor of instrument.
Namely, between the disclosed bus control module of the present embodiment and instrument, be by dual processor, to realize the operation of system, microcontroller in bus control module is carried out respectively different operation tasks from the processor of instrument, has reduced taking opertaing device resource.And, owing to adopting dual processor, realize the parallel processing mode of data interaction formula, improved the speed of exchanges data, increased stability and the reliability of the system being formed by bus control module and instrument simultaneously.
The present embodiment discloses a kind of bus control module, is connected with instrument, and application PROFIBUS-DP agreement, its structural representation as shown in Figure 2, comprising:
DP interface module 21, protocol chip 22, microcontroller 23, optical coupling isolation circuit 24, storage chip 25.
Except the structure identical with a upper embodiment, the present embodiment has also increased storage chip 25.
Storage chip 25 is connected with microcontroller 23.
Storage chip 25 passes through I
2c interface is connected with microprocessor 23.
Wherein, storage chip 25 is specifically as follows EEPROM(Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)).
Concrete, the disclosed storage chip 25 of the present embodiment can be AT24C64AN-10SI-1.8.
Storage chip 25 is for storage networking parameter.
The disclosed bus control module of the present embodiment, by increasing storage chip, with DP interface module, protocol chip, microcontroller, the common bus control module forming of optical coupling isolation circuit, realize by PROFIBUS-DP agreement and replace concentrating parallel routing, by digital technology, substitute the analog signal transmission technology of having used, realized low-cost communication at a high speed, in addition, the control that PROFIBUS-DP agreement can realize field apparatus and distributing I/O with communicate by letter, realize long-range and control.And, by storage chip, network parameter is stored, prevent the loss of data.
Preferably, the disclosed microcontroller 23 of the present embodiment is specifically as follows M16C type microprocessor.
Microcontroller 23 can also be specially M30626FHPFP.
Further, the parallel bus between microcontroller 23 and protocol chip 22 comprises: data bus, address bus and control port.
Wherein, data bus is 8 bit data bus, and address bus is 10 bit address buses.
Control port is mainly used in chip select, read-write, clock, interruption and reset.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a bus control module, is connected with instrument, it is characterized in that, application PROFIBUS-DP agreement, comprising:
By two-wire system bus, be connected with peripheral DP interface module, inside is integrated with the protocol chip of PROFIBUS-DP agreement;
The microcontroller being connected with described protocol chip by parallel bus;
The optical coupling isolation circuit being connected with described microcontroller and instrument respectively.
2. bus control module according to claim 1, is characterized in that, also comprises:
The storage chip being connected with described microcontroller.
3. bus control module according to claim 2, is characterized in that, described storage chip is: EEPROM (Electrically Erasable Programmable Read Only Memo) EEPROM.
4. bus control module according to claim 2, is characterized in that, described storage chip is connected by I2C interface with microprocessor.
5. bus control module according to claim 1, is characterized in that, described protocol chip is specially: inside is integrated with the SPC4-2 chip of PROFIBUS-DP agreement.
6. bus control module according to claim 5, is characterized in that, described SPC4-2 chip comprises: request sends RTS port, transmit port, receiving port.
7. bus control module according to claim 1, is characterized in that, described microcontroller is: M16C type microcontroller.
8. bus control module according to claim 7, is characterized in that, described microcontroller is specially: M30626FHPFP.
9. bus control module according to claim 1, is characterized in that, described microcontroller, by optical coupling isolation circuit, adopts MODBUS agreement to be connected with the processor of described instrument.
10. bus control module according to claim 7, is characterized in that, the parallel bus between described microcontroller and protocol chip comprises:
8 bit data bus, 10 bit address bus and control ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849921.6U CN203812237U (en) | 2013-12-20 | 2013-12-20 | Bus control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849921.6U CN203812237U (en) | 2013-12-20 | 2013-12-20 | Bus control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812237U true CN203812237U (en) | 2014-09-03 |
Family
ID=51450963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320849921.6U Expired - Lifetime CN203812237U (en) | 2013-12-20 | 2013-12-20 | Bus control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812237U (en) |
-
2013
- 2013-12-20 CN CN201320849921.6U patent/CN203812237U/en not_active Expired - Lifetime
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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: 20140903 |