CN203675134U - Remote station based on PROFIBUS protocol and PROFIBUS-DP communication system with same - Google Patents
Remote station based on PROFIBUS protocol and PROFIBUS-DP communication system with same Download PDFInfo
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- CN203675134U CN203675134U CN201420041993.2U CN201420041993U CN203675134U CN 203675134 U CN203675134 U CN 203675134U CN 201420041993 U CN201420041993 U CN 201420041993U CN 203675134 U CN203675134 U CN 203675134U
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Abstract
The utility model provides a remote station based on a PROFIBUS protocol. The remote station comprises a power supply module which comprises a first connector, a PROFIBUS-DP interface which comprises a second connector connected with the first connector, a central processor which is connected with the first connector, and is connected with the second connector through a photoelectric isolation communication bus, an input interface which comprises a third connector connected with the first connector, an output interface which comprises a fourth connector, and a casing body. The third connector is connected with the central processor through a photoelectric isolation data bus. The fourth connector is connected with the first connector, and is connected with the central processor through the photoelectric isolation data bus. The remote station provided by the utility model has the advantages of simple use, low cost and improved protection level. The utility model further provides a PROFIBUS-DP communication system.
Description
Technical field
The utility model relates to field bus technique field, particularly a kind of distant station based on PROFIBUS agreement and have its PROFIBUS-DP communication system.
Background technology
IP67 refers in particular to the abbreviation that protection safety Grade I P is (Ingress Protection Rating or International Protection code), and it has defined the protective capacities of an interface liquid towards and solid particle.After IP, followed 2 bit digital, the 1st is solid-state degree of protection, and scope is 0-6, represents respectively the protection from bulky grain foreign matter to dust; The 2nd is liquid degree of protection, and scope is 0-8, represents respectively drip to the protection bottom pressure situation from vertical water.The larger expression ability of numeral is stronger.The explanation of IP67 is that protection dust sucks (entirety prevents contact, the infiltration of protection dust); Protect of short duration immersion (anti-soaking).At present wiring industry the highest realization be IP67 rank.In addition, industrial connector also has temperature, the Consideration to other adverse circumstances such as antidetonation.
PROFIBUS-DP is a branch of PROFIBUS agreement, it is a kind of high-speed communication connection through optimizing, be to be that control system and device level disperse the communication between I/O to design specially, can be used for the high speed data transfer of dcs, its transmission speed can reach 12Mb/s.PROFIBUS-DP generally forms single main station system, adopts the work of loop-around data transmission means between master station and follow station.PROFIBUS DP adopts ground floor, the second layer and the user interface layer of OSI Reference Model, the 3rd does not add description to layer 7, this structure has been guaranteed the quick and effective of transfer of data, DDLM(Direct DataLink Mapper, immediate data link reflection) user interface that is easy to enter the second layer is provided.User interface has specified the application function that user and system and distinct device can call, and describes the behavior of various PROFIBUS DP equipment in detail, and the RS485 transmission technology of transmission use is also provided.
PROFIBUS is current one of general standard for Fieldbus in the world, and with its unique technical characterstic, strict authentication specifications, open standard, the support of numerous manufacturer (for example Siemens Company), be included into the international standard IEC61158 of fieldbus.PROFIBUS becomes the first fieldbus national standard of China (GB/T20540-2006) in October, 2006.
At present, PROFIBUS-DP distant station is set up complicated, and degree of protection only has IP20, and degree of protection is low, and is applied in industrial environment and must be arranged in control cabinet, uses very inconvenient and cost is higher.
Utility model content
The purpose of this utility model is intended at least solve one of described technological deficiency.
For this reason, an object of the present utility model is to propose a kind of distant station based on PROFIBUS agreement, and this distant station adopts integrated design, and can realize use simple, cost is low and degree of protection arrives the object of IP67.Another object of the present utility model is to propose a kind of PROFIBUS-DP communication system.
To achieve these goals, the embodiment of the utility model first aspect provides a kind of distant station based on PROFIBUS agreement, comprising: power module, and described power module comprises the first connector; PROFIBUS-DP interface, described PROFIBUS-DP interface comprises the second connector, described the second connector is connected with described the first connector; Central processing unit, described central processing unit is connected with described the first connector, and the communication bus that described central processing unit is isolated by photoelectricity is connected with described the second connector; Input interface, described input interface comprises the 3rd connector, described the 3rd connector is connected with described the first connector, and the data/address bus that described the 3rd connector is isolated by photoelectricity is connected with described central processing unit; Output interface, described output interface comprises the 4th connector, described the 4th connector is connected with described the first connector, and the data/address bus that described the 4th connector is isolated by photoelectricity is connected with described central processing unit; Housing, the data/address bus of the communication bus that wherein, described power module, described PROFIBUS-DP interface, described central processing unit, described input interface and described output interface are isolated by described photoelectricity and the isolation of described photoelectricity is all installed in described housing and is undertaken filling by electronics resin.
In an embodiment of the present utility model, the polyamide 6 that described housing adopts is made.
In another embodiment of the present utility model, in described first to fourth connector, each includes spiral self-locking device.
In another embodiment of the present utility model, in described first to fourth connector, each all adopts copper nickel-plated metal to make.
In an embodiment of the present utility model, described the first connector comprises that 5 binding posts and external diameter are Φ 23mm.
In another embodiment of the present utility model, each in the described second to the 4th connector includes 5 binding posts and external diameter is Φ 12mm.
According to the distant station based on PROFIBUS agreement of the utility model embodiment, adopt integrated design, by integrated as a whole to power module, PROFIBUS-DP interface, central processing unit, input interface, output interface and core bus, be placed in a housing and electricity consumption subtree fat filling, the power supply of PROFIBUS-DP interface, central processing unit, input interface and output interface is isolated completely.And, adopt spiral self-locking device to slide to prevent it to the connector of power module, PROFIBUS-DP interface, input interface and output interface, thereby can realize, use is simple, cost is low and the object of degree of protection arrival IP67.
The embodiment of the utility model second aspect proposes a kind of PROFIBUS-DP communication system, comprising: main website, and described main website comprises PROFIBUS-DP interface; PROFIBUS-DP bus, described PROFIBUS-DP bus is connected with the PROFIBUS-DP interface of described main website; Multiple slave stations, each described slave station is the distant station based on PROFIBUS agreement described in described claim 1-8 any one, wherein, each distant station based on PROFIBUS agreement is all connected in described PROFIBUS-DP bus.
In an embodiment of the present utility model, also comprise: terminal resistance, described terminal resistance is connected with the PROFIBUS-DP interface of the described slave station that is positioned at described PROFIBUS-DP bus termination, and described terminal resistance is connected in described PROFIBUS-DP bus.
According to the PROFIBUS-DP communication system of the utility model embodiment, in PROFIBUS-DP bus, can connect multiple slave stations and communicate.And each slave station adopts integrated design, by integrated as a whole to power module, PROFIBUS-DP interface, central processing unit, input interface, output interface and core bus, be placed in a housing and electricity consumption subtree fat filling, the power supply of PROFIBUS-DP interface, central processing unit, input interface and output interface is isolated completely.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structure chart of the distant station based on PROFIBUS agreement of the utility model embodiment;
Fig. 2 (a) and Fig. 2 (b) are according to the schematic diagram of the power module connector of the utility model embodiment;
Fig. 3 (a) and Fig. 3 (b) are according to the schematic diagram of the connector of the PROFIBUS-DP interface of the utility model embodiment;
Fig. 4 is according to the schematic diagram of the connector of the input interface of the utility model embodiment and output interface;
Fig. 5 is according to the schematic diagram of the data isolation of the utility model embodiment and passage diagnosis;
The schematic diagram that the distant station to based on PROFIBUS agreement that Fig. 6 (a) is the utility model embodiment to Fig. 6 (f) is configured;
Fig. 7 is according to the schematic diagram of the PROFIBUS-DP communication system of the utility model embodiment.
Embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
Below with reference to Fig. 1 to Fig. 5, the distant station based on PROFIBUS agreement of the utility model embodiment is described.Wherein, the distant station based on PROFIBUS agreement of the utility model embodiment is the integrated PROFIBUS-DP distant station of IP67 grade.
As shown in Figure 1, the distant station based on PROFIBUS agreement that the utility model embodiment provides, comprising: power module 1, PROFIBUS-DP interface 2, central processing unit 3, input interface 4, output interface 5 and housing.
Particularly, power module 1 can generate 3 road insulating power supplies.Wherein, above-mentioned 3 road insulating power supplies comprise communication driving power, internal electric source and interface external power.In an embodiment of the present utility model, communication driving power, internal electric source and interface external power are isolated mutually, thereby can strengthen antijamming capability.
And power module 1 comprises the first connector, wherein the first connector can be arranged at the interface of above-mentioned power module 1.This first connector comprises spiral self-locking device, in order to prevent the slip of the first connector.
In an example of the present utility model, the first connector of power module 1 comprises that 5 binding posts and external diameter are Φ 23mm, and power module 1 adopts (Φ 23,5 cores) connector to connect.
Fig. 2 (a) and Fig. 2 (b) show respectively the structure of the plug and socket of above-mentioned the first connector.Wherein, the first terminal of the first connector and the second terminal connect signal ground, and the 3rd terminal meets PE(Protecting Earthing, protection conductor) line, the 4th and Five-terminals connect power positive end.
PROFIBUS-DP interface 2 is connected with power module 1.Particularly, PROFIBUS-DP interface 2 comprises the second connector, and wherein the second connector is connected with the first connector of power module 1.Under the power supply of the communication driving power that PROFIBUS-DP interface 2 can be exported at power module 1, carry out communication with PROFIBUS-DP main website, and communication bus and central processing unit 3 that PROFIBUS-DP interface 2 can be isolated by photoelectricity carry out exchanges data.Particularly, PROFIBUS-DP main website and 2 communications of PROFIBUS-DP interface, send data by PROFIBUS-DP main website to PROFIBUS-DP interface 2, and PROFIBUS-DP interface 2 also sends the data to central processing unit 3 and processes.
In an embodiment of the present utility model, the second connector can be arranged at the interface of PROFIBUS-DP interface 2.Wherein, this second connector comprises spiral self-locking device, in order to prevent the slip of the second connector.
In an example of the present utility model, the second connector of PROFIBUS-DP interface 2 comprises that 5 binding posts and external diameter are Φ 12mm, and PROFIBUS-DP interface 2 adopts (Φ 12,5 cores) connector to connect.
Fig. 3 (a) and Fig. 3 (b) show respectively the structure of the plug and socket of the second connector of above-mentioned PROFIBUS-DP interface 2.Wherein, the first terminal of the second connector unsettled, do not use.The second terminal meets bus B US-A, and the 3rd terminal connects signal ground, and the 4th terminal meets bus B US-B, and Five-terminals meets shielding ground Shield.
Fig. 4 shows the structure of the connector of input interface and output interface.Input interface 4 is connected with central processing unit 3 with power module 1, particularly, input interface 4 comprises the 3rd connector, and wherein the 3rd connector is connected with the first connector of power module 1, and the data/address bus that the 3rd connector is isolated by photoelectricity is connected with central processing unit 3.Under the power supply of the interface external power that input interface 4 can be exported at power module 1, carry out exchanges data with central processing unit 3.
In an embodiment of the present utility model, the 3rd connector and the 4th connector are separately positioned on the interface of input interface 4 and output interface 5, and include spiral self-locking device, in order to prevent the slip of the 3rd connector and the 4th connector.
In an example of the present utility model, the 3rd connector of input interface 4 and the 4th connector of output interface 5 comprise that 5 binding posts and external diameter are Φ 12mm, and input interface 4 and output interface 5 adopt (Φ 12,5 cores) connector to connect.
Particularly, input interface 4 and output interface 5 all can be isolated by photoelectricity data/address bus and central processing unit 3 carry out exchanges data.The data/address bus that input interface 4 is isolated by photoelectricity sends input data to central processing unit 3, central processing unit 3 enters to process to above-mentioned input data, and the data/address bus that data after treatment are isolated by photoelectricity exports output interface 5 to, and further export external equipment to by output interface 5.
It should be noted that, above-mentioned the first connector, the second connector, the 3rd connector and the 4th connector all adopt copper nickel-plated metal to make, and all connectors have spiral self-locking device and reach IP67 degree of protection.
In an embodiment of the present utility model, the data/address bus of the communication bus that power module 1, PROFIBUS-DP interface 2, central processing unit 3, input interface 4 and output interface 5 are isolated by photoelectricity and photoelectricity isolation is all installed in housing, and is undertaken filling by electronics resin.Wherein, the polyamide 6 (PA6) that housing adopts is made.
Data isolation below with reference to Fig. 5 to the utility model embodiment and passage diagnosis are described.
As shown in Figure 5, the distant station of the utility model embodiment based on PROFIBUS agreement, also comprises: input data isolation circuit 6 and output data isolation circuit 7.
Particularly, input data isolation circuit 6 is positioned at input interface 4, and is connected with data/address bus with many input channels respectively, can carry out data isolation to the input data from many input channels.
Output data isolation circuit 7 is positioned at output interface 5, and is connected with data/address bus with many output channels respectively, can carry out data isolation to the output data from many output channels.
In an embodiment of the present utility model, the data of input channel and output channel comprise digital quantity input, analog input, digital output and analog output, and every type all has multiple passages.
In addition, the distant station based on PROFIBUS agreement of the utility model embodiment also comprises multiple passage diagnostic circuits 8.Wherein, the input of each passage diagnostic circuit is connected with an input channel or output channel, the output of each passage diagnostic circuit is connected with data/address bus, can be to diagnose and generate the diagnostic data of respective channel from the data of above-mentioned input channel or output channel, and diagnostic data is transferred to data/address bus.Particularly, each passage all has corresponding passage diagnostic circuit.Passage diagnostic circuit produces the diagnostic data of this passage, and data are the same imports central processing unit 3 into by data/address bus for diagnostic data and input data and output, then pass to main website by PROFIBUS DP bus.
Yi16 road input module is described the distant station based on PROFIBUS agreement of the utility model embodiment below.This input module has following features: have 16 PNP inputs, and diagnostic data can be able to be defined to user data area.The input signal of input interface access carries out the diagnosis of individual slots position.And each connector is provided with two signal input parts, and material is copper nickel-plated metal, adopted the shell of PA6 material and electronics resin to carry out module embedding, has the ability of shock resistance anti-vibration and the degree of protection of IP67.
Design parameter is as follows:
(1) work/load voltage: 18 ... 30VDC;
(2) operating current: <75mA;
(3) bus communication speed: 9.6Kbps to 12Mbps;
(4) bus tributary address: the 1-99(decimal system);
(5) electrical isolation: isolate by two toggle switchs and work, load voltage;
(6) input channel quantity: 16 3 line PNP sensor signals processed;
(7) input voltage: 18 to 30VDC operating voltage power supplies;
(8) supply current: each passage is less than 120mA, except short circuit;
(9) switching threshold: 2mA/4mA;
(10) input time delay: 2.5ms;
(11) switching frequency: 250Hz;
(12) maximum input current: 6mA:
(13) electrical isolation: with bus system electrical isolation;
(14) working temperature :-25～55 degrees Celsius.
Be described to the flow process that Fig. 6 (f) is configured the distant station to based on PROFIBUS agreement of the utility model embodiment below with reference to Fig. 6 (a).Particularly, provide a GSD file with configuration easily in PLC S7300PROFIBUS-DP network.
The first step, as shown in Figure 6 (a), opens the hardware configuration program of product step7, under options menu, clicks GSD file is installed.
Second step, occurs after the window shown in Fig. 6 (b), by navigation button, finds the GSD file just having copied.Select after this file, click button installation so that this GSD file to be installed.Occurring, after the prompting shown in Fig. 6 (c), pressing "Yes" button.Occurring that after Fig. 6 (d) prompting, click is determined, so far completed the installation of GSD file.
As shown in Figure 6 (e), in hardware configuration options, launch PROFIBUS DP and launch again Additional Field Devices launching General, can find PBIO2 equipment.
Then, start to configure PROFIBUS DP distant station.
The 3rd step, opens the hardware configuration program of product step7, configuration PROFIBUS-DP main website and PROFIBUS network.
The 4th step as shown in Fig. 6 (f), is launched PROFIBUS DP and is launched Additional Field Devices launching General again in hardware configuration options, finds PBIO2 equipment.Select PROFIBUS DP network, then double-click PBIO2.
The 5th step, configuration network address in the window ejecting, it is consistent that this address must arrange with hardware toggle switch.Then, click and confirm.The STEP7 of product can be this module assignment IO address automatically, completes thus PLC S7300PROFIBUS-DP network is increased to a distant station.
According to the distant station based on PROFIBUS agreement of the utility model embodiment, adopt integrated design, by integrated as a whole to power module, PROFIBUS-DP interface, central processing unit, input interface, output interface and core bus, be placed in a housing and electricity consumption subtree fat filling, the power supply of PROFIBUS-DP interface, central processing unit, input interface and output interface is isolated completely.And, adopt spiral self-locking device to slide to prevent it to the connector of power module, PROFIBUS-DP interface, input interface and output interface, thereby can realize, use is simple, cost is low and the object of degree of protection arrival IP67.
The utility model embodiment on the other hand also proposes a kind of PROFIBUS-DP communication system.
As shown in Figure 7, the PROFIBUS-DP communication system that the utility model embodiment provides comprises: main website, PROFIBUS-DP bus and multiple slave station.
Particularly, main website comprises PROFIBUS-DP interface, and PROFIBUS-DP bus is connected with the PROFIBUS-DP interface of main website.Wherein, each slave station is the distant station based on PROFIBUS agreement that the utility model above-described embodiment provides, and wherein, each distant station based on PROFIBUS agreement is all connected in PROFIBUS-DP bus.
In an embodiment of the present utility model, the PROFIBUS-DP communication system that the utility model embodiment provides also comprises: terminal resistance, wherein terminal resistance is connected with the PROFIBUS-DP interface of the slave station that is positioned at PROFIBUS-DP bus termination, and terminal resistance is connected in PROFIBUS-DP bus.
In an embodiment of the present utility model, in PROFIBUS-DP bus, can hang 127 slave stations, on last slave station DP mouth, to add terminal resistance, on the PROFIBUS-DP of main website mouth, be also connected with terminal resistance in addition.
It should be noted that, each slave station includes terminating resistor circuit, just in the time that hanging over the terminal of PROFIBUS-DP bus, it just comes into operation, other slave stations between main website and last slave station m, and in Fig. 7, slave station n does not need to use terminal resistance to slave station x.
According to the PROFIBUS-DP communication system of the utility model embodiment, in PROFIBUS-DP bus, can connect multiple slave stations and communicate.And each slave station adopts integrated design, by integrated as a whole to power module, PROFIBUS-DP interface, central processing unit, input interface, output interface and core bus, be placed in a housing and electricity consumption subtree fat filling, the power supply of PROFIBUS-DP interface, central processing unit, input interface and output interface is isolated completely.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.Scope of the present utility model is extremely equal to and limits by claims.
Claims (8)
1. the distant station based on PROFIBUS agreement, is characterized in that, comprising:
Power module, described power module comprises the first connector;
PROFIBUS-DP interface, described PROFIBUS-DP interface comprises the second connector, described the second connector is connected with described the first connector;
Central processing unit, described central processing unit is connected with described the first connector, and the communication bus that described central processing unit is isolated by photoelectricity is connected with described the second connector;
Input interface, described input interface comprises the 3rd connector, described the 3rd connector is connected with described the first connector, and the data/address bus that described the 3rd connector is isolated by photoelectricity is connected with described central processing unit;
Output interface, described output interface comprises the 4th connector, described the 4th connector is connected with described the first connector, and the data/address bus that described the 4th connector is isolated by photoelectricity is connected with described central processing unit;
Housing, the data/address bus of the communication bus that wherein, described power module, described PROFIBUS-DP interface, described central processing unit, described input interface and described output interface are isolated by described photoelectricity and the isolation of described photoelectricity is all installed in described housing and is undertaken filling by electronics resin.
2. the distant station based on PROFIBUS agreement as claimed in claim 1, is characterized in that, the polyamide 6 that described housing adopts is made.
3. the distant station based on PROFIBUS agreement as claimed in claim 1, is characterized in that, in described first to fourth connector, each includes spiral self-locking device.
4. the distant station based on PROFIBUS agreement as claimed in claim 3, is characterized in that, in described first to fourth connector, each all adopts copper nickel-plated metal to make.
5. the distant station based on PROFIBUS agreement as claimed in claim 1, is characterized in that, described the first connector comprises that 5 binding posts and external diameter are Φ 23mm.
6. the distant station based on PROFIBUS agreement as claimed in claim 1, is characterized in that, each in the described second to the 4th connector includes 5 binding posts and external diameter is Φ 12mm.
7. a PROFIBUS-DP communication system, is characterized in that, comprising:
Main website, described main website comprises PROFIBUS-DP interface;
PROFIBUS-DP bus, described PROFIBUS-DP bus is connected with the PROFIBUS-DP interface of described main website;
Multiple slave stations, each described slave station is the distant station based on PROFIBUS agreement described in described claim 1-6 any one, wherein, each distant station based on PROFIBUS agreement is all connected in described PROFIBUS-DP bus.
8. PROFIBUS-DP communication system as claimed in claim 7, is characterized in that, also comprises:
Terminal resistance, described terminal resistance is connected with the PROFIBUS-DP interface of the described slave station that is positioned at described PROFIBUS-DP bus termination, and described terminal resistance is connected in described PROFIBUS-DP bus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041993.2U CN203675134U (en) | 2014-01-23 | 2014-01-23 | Remote station based on PROFIBUS protocol and PROFIBUS-DP communication system with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420041993.2U CN203675134U (en) | 2014-01-23 | 2014-01-23 | Remote station based on PROFIBUS protocol and PROFIBUS-DP communication system with same |
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| CN203675134U true CN203675134U (en) | 2014-06-25 |
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| CN201420041993.2U Expired - Fee Related CN203675134U (en) | 2014-01-23 | 2014-01-23 | Remote station based on PROFIBUS protocol and PROFIBUS-DP communication system with same |
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