CN202939476U - PLC-based multi-point data acquisition device with controllable data flow direction - Google Patents
PLC-based multi-point data acquisition device with controllable data flow direction Download PDFInfo
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- CN202939476U CN202939476U CN2012206522321U CN201220652232U CN202939476U CN 202939476 U CN202939476 U CN 202939476U CN 2012206522321 U CN2012206522321 U CN 2012206522321U CN 201220652232 U CN201220652232 U CN 201220652232U CN 202939476 U CN202939476 U CN 202939476U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a PLC-based multi-point data acquisition device with controllable data flow direction. The device comprises an industrial personal computer which is connected with at least one PLC through a switch, every PLC is numbered with a unique number, and the number is a symbol to distinguish one PLC from another; a thread pool is opened up for each PLC and the thread pools are used to process data communication of different PLCs; the direction of data flow between the industrial personal computer and the PLCs is controlled; every PLC can recognize their own number as well as the numbers of other PLCs, and the numbers are interpreted as IP addresses inside the PLCs during communication; and each PLC is provided with two different ports used as a data transmitting port and a data receiving port respectively. The PLC-based multi-point data acquisition device with controllable data flow direction has the advantages that the direction of data flow is controllable, the flexibility is high, and the device can adapt to occasions with poor-regularity data collection point distribution.
Description
Technical field
The utility model discloses a kind of that can be used for industrial occasions multipoint acquisition data and require the controlled data collector of data stream.
Background technology
PLC is the industrial circle data acquisition equipment that arrives commonly used, the characteristics such as that PLC has is able to programme, good stability.Data collector or method based on PLC are also of common occurrence.But these methods or install often data flow and fix, as flow to the master control host computer of pulpit, in the situation that there is no host computer, often flow to certain PLC that importance is high, then unify deal with data by this host computer or PLC.This traditional mode data flow is uncontrollable, lacks dirigibility, can not adapt to the day by day complicated demand of new industrial occasions data acquisition.
The utility model content
For above shortcomings part in prior art, the technical problems to be solved in the utility model is to provide a kind of based on the controlled controlled data stream multi-point data acquisition device of the data flow of PLC.
The technical scheme that the utility model adopts for achieving the above object is: a kind of controlled data stream multi-point data acquisition device based on PLC comprises
An industrial computer connects at least one PLC by switch, is each PLC numbering, and number unique, as the sign of distinguishing different PLC;
At least one PLC that can identiflication number, each PLC numbering is unique, and every PLC has two ports: data sending terminal mouth and data receiver port.
The difference that there is no the principal and subordinate between described PLC.
Described PLC articulates digital quantity input module, analog input module, counter module, pulse generator module, RS232 module, RS485 module.
The utlity model has following advantage:
1. data flow is controlled, has higher dirigibility, can satisfy the relatively poor occasion of data collection point distribution regularity;
2. industrial computer can show the real time data of all terminal devices, facilitates the observer to grasp at any time each point data acquisition situation and data value;
3. can gather ethernet type data, serial ports categorical data etc., can connect various types of sensors, can satisfy most of data acquisition requests.
Description of drawings
Fig. 1 is the utility model device circuit schematic diagram;
Fig. 2 is method of data flow control.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Fig. 1-2, a kind of controlled data stream multi-point data acquisition device based on PLC of the utility model, comprise: an industrial computer and some PLC, PLC articulate digital quantity input module, analog input module, counter module, pulse generator module, RS232 module, RS485 module.Be each PLC numbering, and number uniquely, open up thread pool for the treatment of the data communication of different PLC for each PLC in industrial computer, with these number record sign as the different PLC of differentiation in industrial computer.Every PLC identifies the numbering of oneself and the numbering of other PLC, and numbering is in the inner resolved IP address that is of PLC when communication.Every PLC opens two different ports, and one as the data sending terminal mouth, and one as the data receiver port.Every PLC status is identical, there is no principal and subordinate's difference, so that the data between different PLC pass mutually.Industrial computer shows and opertaing device as the state of communication, can show the communication state of each PLC and whether break down and fault type etc., can also control data flow by industrial computer, when the PLC of ordering as A need to read B point data, just can control by industrial computer, make the A point data to the B point, industrial computer can also show the data value of having a few in real time.
D.C. regulated power supply is selected the WYJ600 D.C. regulated power supply of Shanghai steady magnificent power-supply device company limited.
Industrial computer is selected Siemens SIMATIC IPC847C industrial computer, and SIMATIC IPC847C is a firm Industrial PC with having extendability, adopts the design (4HM) of 19 inches.It has outstanding long-term availability, therefore can provide protection with high investment, especially can guarantee the reliable operation in abominable industrial environment (environment that for example has high dust concentration, high temperature and high impact load).
Netting twine adopts common double end RJ45 netting twine, and length of mesh wire is less than 100 meters.
The network switch is selected the Express of Cisco 500 switches, Cisco Catalyst Express 500 switches provide the double-layer network management, can manage Fast Ethernet and gigabit Ethernet, provide choke free linear speed performance and one to aim at data, wireless communication with IP and the secure network platform optimized.Cisco Catalyst Express500 also provides a plurality of POEs (PoE) option, helps reduce cost and the complexity of IP communication, and supports the new purposes of Ethernet.
PLC selects the WAGO fieldbus controller, and this fieldbus controller is fit to the message transmission rate of 10/100 Mbits/s, meets IEC 61131-3 programming standard.This controller provides 512KB program internal memory, 256KB datarams and 24KB to keep internal memory.32 bit CPUs have multitasking function and backup battery real-time clock.This controller provides multiple different application protocol, is used for data collection and control (MODBUS, ETHERNET/IP) or is used for system management and diagnosis (HTTP, BootP, DHCP, DNS, SNTP, FTP, SNMP and SMTP).The PLC fieldbus controller need to articulate the data function module, comprises analog input module, digital quantity input module, RS232 communication module, RS485 module.
Concrete connection is as follows:
Siemens industrial computer IPC847C and the Express of Cisco 500 switches are by the link of double end RJ45 netting twine, switch is connected by the PLC of netting twine and far-end, the PLC controller comprises controller 750-881, analog input module 750-476, digital quantity input module 750-400, counter module 750-638, pulse generator module 750-635, RS232 communication module 750-650, RS485 communication module 750-653, terminal module 750-600, above-mentioned each module once connects.These modules connect respectively various kinds of sensors, gather desired data.Digital quantity input module 750-400 can detect the rising edge voltage of 24VDC, and it is connected with temperature alarm, and temperature alarm sends warning when temperature reaches preset temperature; Analog input module 750-476 can gather the analog input signal, the Bonding pressure meter, and pressure gauge converts pressure value to 0 ~ 10VDC Voltage-output; Counter module 750-638 linkage counter, pulse generator module 750-635 connects pulse producer, and RS232 communication module 750-650 connects the serial communication equipment of RS232 type, and RS485 communication module 750-653 connects the communication apparatus of RS485 type.
Control data stream by industrial computer and the common realization of PLC.At first input needs PLC numbering, address, data sintering, side-play amount, the target P LC of reading out data to number in industrial computer.After inputting this write information, industrial computer sends communication command according to the information of input to data source PLC and target P LC, and the read method of target P LC by the tcp/ip agreement reads the data to the side-play amount according to the sintering, completes data flow con-trol.Data flow con-trol can also periodically be controlled the regular biography of the data of certain PLC to another PLC by timer.
Method of data flow control of the present utility model: in industrial computer, that PLC numbering is corresponding with the IP address; Specific data source PLC numbering; Specific data source PLC wants start address and the side-play amount of reading out data; Specific data flows to target P LC; Industrial computer and target P LC attempt connecting; If successful connection, industrial computer sends the data flow con-trol order to target P LC, if connect unsuccessful again attempt connecting; Target P LC is by the read method reading out data of tcp/ip agreement; Again wait for the data flow con-trol order.
Claims (3)
1. the controlled data stream multi-point data acquisition device based on PLC, is characterized in that, comprises an industrial computer, connects at least one PLC by switch, is each PLC numbering, and number unique, as the sign of distinguishing different PLC;
At least one PLC that can identiflication number, each PLC numbering is unique, and every PLC has two ports: data sending terminal mouth and data receiver port.
2. a kind of controlled data stream multi-point data acquisition device based on PLC according to claim 1, is characterized in that there is no principal and subordinate's difference between described PLC.
3. a kind of controlled data stream multi-point data acquisition device based on PLC according to claim 1, it is characterized in that, described PLC articulates digital quantity input module, analog input module, counter module, pulse generator module, RS232 module, RS485 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206522321U CN202939476U (en) | 2012-11-30 | 2012-11-30 | PLC-based multi-point data acquisition device with controllable data flow direction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012206522321U CN202939476U (en) | 2012-11-30 | 2012-11-30 | PLC-based multi-point data acquisition device with controllable data flow direction |
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| CN202939476U true CN202939476U (en) | 2013-05-15 |
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| CN2012206522321U Expired - Fee Related CN202939476U (en) | 2012-11-30 | 2012-11-30 | PLC-based multi-point data acquisition device with controllable data flow direction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589421A (en) * | 2014-10-22 | 2016-05-18 | 天津金维棉业有限公司 | Control system for spinning production line |
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2012
- 2012-11-30 CN CN2012206522321U patent/CN202939476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589421A (en) * | 2014-10-22 | 2016-05-18 | 天津金维棉业有限公司 | Control system for spinning production line |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20171130 |