CN206684534U - A kind of attachment structure of power plant PROFIBUS bus control systems - Google Patents

Abstract

A kind of attachment structure of power plant PROFIBUS bus control systems provided by the utility model, the PROFIBUS master stations formed including the process control station being made up of two block controllers and Liang Kuai PROFIBUS main websites, process control station and PROFIBUS master stations in the structure employ the design of redundancy simultaneously, and controller and the PROFIBUS main website is connected by the first external data sum with the second external data bus respectively afterwards.So that any equipment fault is all without the stable operation for influenceing this PROFIBUS bus control systems in process control station and PROFIBUS master stations.

Description

A kind of attachment structure of power plant PROFIBUS bus control systems

Technical field

The utility model belongs to power plant's field bus control system field, and in particular to a kind of total line traffic controls of power plant PROFIBUS The attachment structure of system processed.

Background technology

PROFIBUS is one of widest standard for Fieldbus of current commercial Application, is that one kind internationalizes, be open, no Standard for Fieldbus dependent on equipment manufacturer.PROFIBUS bus control systems pass through intelligent on-site bus line equipment PROFIBUS buses connect, and realize total digitalization communication from bottom to top.

Existing PROFIBUS bus control systems attachment structure is complicated, and master-slave redundancy scheme considers deficiency, often occurs Main website job failure causes all from station failure in PROFIBUS buses；Data exchange is imitated between PROFIBUS main websites and controller Rate is low, poor reliability.

The content of the invention

The purpose of this utility model is to provide a kind of attachment structure of power plant PROFIBUS bus control systems, solved Existing PROFIBUS bus control systems main website job failure cause in PROFIBUS buses it is all from station failure the defects of.

In order to achieve the above object, the technical solution adopted in the utility model is specific as follows：

A kind of attachment structure of power plant PROFIBUS bus control systems provided by the utility model, including process control Stand, PROFIBUS master stations, the first external data bus and the second external data bus, the process control station include two pieces of controls Device processed, the PROFIBUS master stations include Liang Kuai PROFIBUS main websites, wherein, controller and the PROFIBUS main website is logical The first external data sum is crossed to be connected with the second external data bus.

Preferably, the controller connects including first pair of access port memory module, controller function module and Ethernet Mouth mold block, wherein, the controller function module stores mould with first pair of access port respectively by the first internal data bus Block connects with ethernet interface module.

Preferably, the PROFIBUS main websites include second pair of access port memory module, master function module and PROFIBUS interface modules, wherein, the master function module by the second internal data bus respectively with second pair of access end Mouth memory module connects with PROFIBUS interface modules.

Preferably, first, second internal data bus is 8 bit architectures.

Preferably, the ethernet interface module of two block controller is connected with same interchanger, and the interchanger connects It is connected to several engineer stations and operator station.

Preferably, the PROFIBUS bus control systems also include several fieldbus slave stations, described two pieces PROFIBUS main websites are connected by PROFIBUS buses with fieldbus slave station respectively.

Preferably, first, second external data bus is 8 bit architectures.

Compared with prior art, the beneficial effects of the utility model are：

A kind of attachment structure of power plant PROFIBUS bus control systems provided by the utility model, including by two pieces of controls The process control station of device composition and the PROFIBUS master stations of Liang Kuai PROFIBUS main websites composition, the process control station in the structure Employ the design of redundancy simultaneously with PROFIBUS master stations, afterwards two block controllers and Liang Kuai the PROFIBUS main website It is connected respectively by the first external data sum with the second external data bus.So that process control station and PROFIBUS master stations In any equipment fault all without influence this PROFIBUS bus control systems stable operation.

Further, the structure employs double access port memory modules as in the data exchange of holotype and standby pattern It is situated between, master/slave data switching fabric is simple, reduces loss of data, improves the accuracy of data.

Further, the data inside controller and the data inside PROFIBUS main websites are total by 8 internal datas Line completes data exchange, improves the efficiency of data exchange.

Brief description of the drawings

Fig. 1 is controller architecture schematic diagram；

Fig. 2 is PROFIBUS main websites structural representation；

Fig. 3 is field bus control system structural representation；

Fig. 4 is field bus control system engineer applied schematic diagram.

Embodiment

Below in conjunction with the accompanying drawings, the utility model is further described.

As shown in Figure 1 and Figure 2, the connection knot of a kind of power plant PROFIBUS bus control systems provided by the utility model Structure, including controller CP and PROFIBUS main website PB.Wherein, the controller CP includes first pair of access port memory module DP1, controller function module CPFN and ethernet interface module EI, specifically, the controller function module CPFN pass through One 8 internal data bus DB1 are connected with first couple of access port memory module DP and ethernet interface module EI respectively, are passed through One 8 internal data bus DB1, the controller function module CPFN can respectively and double access port memory module DP1 Bidirectional data exchange is carried out with ethernet interface module EI；

Wherein, first pair of access port memory module DP1 uses model IDT7130 dual port RAM；

The ethernet interface module EI uses model CH395 Ethernet chip；

The controller function module CPFN is using the microprocessor for supporting ARM9200, to realize the reality of control logic When computing, completion and data/address bus data exchange.

The PROFIBUS main websites PB include second couple of access port memory module DP2, master function module PBFN and PROFIBUS interface module PI, specifically, the PROFIBUS master functions module PBFN pass through the 2nd 8 internal data bus DB2 is connected with second couple of access port memory module DP2 and PROFIBUS interface module PI respectively, passes through the 2nd 8 internal number According to bus DB2, the PROFIBUS master functions module PBFN respectively with second couple of access port memory module DP2 and PROFIBUS interface modules PI carries out bidirectional data exchange；

Wherein, second pair of access port memory module DP2 uses model IDT7130 dual port RAM；

The PROFIBUS interface modules PI uses the communication chip SN75179 of full duplex；

The master function module PBFN is single-chip microcomputer, to realize function as defined in PROFIBUS agreements, manages main website Data exchange between slave station.

As shown in figure 3, the power plant PROFIBUS bus control systems structure forms one together including two block controller CP Individual process control station, left side controller LCP and right control RCP are referred to as according to controller CP position, two pieces PROFIBUS main websites PB forms a PROFIBUS master station together, is referred to as left side PROFIBUS main website LPB and right side PROFIBUS main websites RPB.The left side controller LCP and right control RCP mono- is operated in holotype, one be operated in it is standby Pattern, similarly, mono- work of the left side PROFIBUS main websites LPB and right side PROFIBUS main websites RPB is holotype, and one is Standby pattern.

Wherein, the left side controller LCP, right control RCP, left side PROFIBUS main websites LPB and right side PROFIBUS main websites RPB is connected with the 2nd 8 external data bus DL2 by the one 8 external data sum DL1 respectively.It is logical The one 8 external data bus DL1 and the 2nd 8 external data bus DL2 is crossed, left side controller LCP and right side can be controlled Data signal between device RCP processed, left side PROFIBUS main websites LPB and right side PROFIBUS main websites RPB is transmitted mutually, and then, When master controller breaks down, the data signal that preparation controller obtains master controller transmission is operated so that equipment can Normal operation；The principle of the PROFIBUS main websites is identical.

During specific works：

Shown Fig. 4 be field engineering implement and dispose structure chart, the field bus control system to outside by with Too network interface module EI provides man-machine interface, in actual applications, ethernet interface module EI expansion is carried out by interchanger SW Exhibition so that in real work, the engineer station ER and operator station OP of varying number are configured according to the design needs, wherein, institute State engineer station ER and operator station OP is connected with interchanger SW respectively, and provide a user man-machine interface；

Meanwhile the field bus control system also includes several fieldbus slave stations, respectively including fieldbus from Stand SL1, fieldbus slave station SL2 and fieldbus slave station SL3, wherein, the left side PROFIBUS main websites LPB and right side PROFIBUS main websites RPB is connected with fieldbus slave station respectively by PROFIBUS buses.

Compared to the prior art the utility model, has the following advantages that：

1st, between left side controller LCP and right control RCP, left side PROFIBUS main websites LPB and right side PROFIBUS Data exchange between main website RPB is completed by 8 bit data bus of inside, total as a result of 8 parallel data Line, left and right data exchange efficiency high.

2nd, as a result of data exchange intermediary of double access port memory modules as holotype and standby pattern, active and standby number It is simple according to switching fabric, loss of data is reduced, improves the accuracy of data.

3rd, controller and PROFIBUS main websites employ the design of redundancy simultaneously, and any failure is all without influence The stable operation of this PROFIBUS bus control systems.

Claims (7)

1. A kind of 1. attachment structure of power plant PROFIBUS bus control systems, it is characterised in that：Including process control station, PROFIBUS master stations, the first external data bus (DL1) and the second external data bus (DL2), the process control station bag Two block controllers (CP) are included, the PROFIBUS master stations include Liang Kuai PROFIBUS main websites (PB), wherein, the controller (CP) it is connected with PROFIBUS main websites (PB) by the first external data total (DL1) with the second external data bus (DL2).
2. A kind of 2. attachment structure of power plant PROFIBUS bus control systems according to claim 1, it is characterised in that：Institute Stating controller (CP) includes first pair of access port memory module (DP1), controller function module (CPFN) and Ethernet interface Module (EI), wherein, the controller function module (CPFN) is visited with first pair respectively by the first internal data bus (DB1) Ask port memory module (DP) and ethernet interface module (EI) connection.
3. A kind of 3. attachment structure of power plant PROFIBUS bus control systems according to claim 2, it is characterised in that：Institute State PROFIBUS main websites (PB) include second pair of access port memory module (DP2), master function module (PBFN) and PROFIBUS interface modules (PI), wherein, the master function module (PBFN) passes through the second internal data bus (DB2) difference It is connected with second pair of access port memory module (DP2) and PROFIBUS interface modules (PI).
4. A kind of 4. attachment structure of power plant PROFIBUS bus control systems according to claim 3, it is characterised in that：Institute It is 8 bit architectures to state first, second internal data bus.
5. A kind of 5. attachment structure of power plant PROFIBUS bus control systems according to claim 3, it is characterised in that：Institute The ethernet interface module (EI) for stating two block controllers (CP) is connected with same interchanger (SW), interchanger (SW) connection There are several engineer stations (ER) and operator station (OP).
6. A kind of 6. attachment structure of power plant PROFIBUS bus control systems according to claim 3, it is characterised in that：Institute Stating PROFIBUS bus control systems also includes several fieldbus slave stations, and the Liang Kuai PROFIBUS main websites pass through respectively PROFIBUS buses are connected with fieldbus slave station.
7. 7. a kind of attachment structure of power plant PROFIBUS bus control systems according to claim any one of 1-6, it is special Sign is：First, second external data bus is 8 bit architectures.