CN201237732Y - Universal PLC principal controller module - Google Patents
Universal PLC principal controller module Download PDFInfo
- Publication number
- CN201237732Y CN201237732Y CNU2008200252055U CN200820025205U CN201237732Y CN 201237732 Y CN201237732 Y CN 201237732Y CN U2008200252055 U CNU2008200252055 U CN U2008200252055U CN 200820025205 U CN200820025205 U CN 200820025205U CN 201237732 Y CN201237732 Y CN 201237732Y
- Authority
- CN
- China
- Prior art keywords
- bus
- controller module
- cpu
- main controller
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Programmable Controllers (AREA)
- Control By Computers (AREA)
Abstract
The utility model discloses a universal PLC main controller module, which is in particular used in the industrial control of process and numerical control machine tools to realize the process control. The universal PLC main controller module comprises a motherboard, a CAN bus interface, a CPU, a photoelectric isolator and a communication interface; wherein, the CPU is connected with an output module through the CAN bus interface and the motherboard in sequence; and the communication interface is connected with the CPU through the photoelectric isolator. The utility model is designed based on the CAN bus, and has the advantages of high utilization rate of bandwidth and high setting flexibility.
Description
(1) technical field
The utility model relates to a kind of general PLC main controller module, especially is applied to process industry control and numerical controlled machinery Machine-Tool Control field, realizes the general PLC main controller module of its process control.
(2) background technology
Quickening along with process of industrialization, also be developed rapidly as Industry Control digitizing, fieldbus (FieldBus) technology intelligent and networking typical case representative, influence huge, the general interest and the attention of engineering circle have been caused, make computer control system progressively move towards distributed field bus control system based on fieldbus and the corresponding function module from Distributed Control System (DCS), I/0 (I/O) control station of realizing PLC master controller and dispersion is interconnected, constitutes Control Network.
PLC master controller and its I/0 module interconnects on same data chainning adopt the bus functionality module based on the Profibus bussing technique usually at present, and master controller and remote station adopt the functional interface module based on this bussing technique, and be interconnected by respective bus.This field bus technique is most widely used at present, and technology is also the most ripe, and communication speed is also very fast, but the field bus control system cost that adopts this bussing technique is than higher, and the user can not self-defining communication protocol in application, and dirigibility is poor.The Profibus bussing technique adopts distributed token mode, all nodes are formed a virtual ring, token transmits by the address between the Profibus bus master, and the main website that has token has bus control right at the time window of determining, with polling mode and slave station communication.Need take certain bandwidth when this mode transmits token, so bandwidth utilization is lower.
The communication of swap data is divided into logic channel by channel and physical channel carries out between the Profibus bus apparatus.Undertaken by logic channel with communicating by letter between the application process, it is to be defined in correspondence table (CRL) in the design phase, and its all parameters are listed in the correspondence table.Each channel has an inlet row in CRL, all CRL inlets of a channel are by the unique addressing of correspondence (CR).This addressing mode in use user is poor according to the degree of freedom that own needs are provided with, when relating in particular to redundancy backup.
(3) summary of the invention
The utility model is low at present PLC main controller module bandwidth availability ratio, and the defective of degree of freedom difference is set, and provides a kind of based on CAN bus, bandwidth availability ratio height, and the high general PLC main controller module of dirigibility is set.
The technical solution adopted in the utility model is:
The general PLC main controller module of the utility model, comprise motherboard, also comprise CAN bus interface, CPU, photoisolator and communication interface, wherein CPU links to each other with outside output output module with described motherboard through the CAN bus interface successively, and communication interface then links to each other with CPU by photoisolator.
The general PLC main controller module of the utility model; adopt the data communication interface of CAN communication interface as this main controller module and outside input/output module; and the signal protection mode adopts photoelectricity to isolate; can suppress system noise effectively; eliminate the interference of ground loop, have that response speed is very fast, the life-span is long, a little benefit such as shock-resistant of volume.And the CAN bus has only been stipulated Physical layer and data link layer, the user oneself defines communication protocol in application, this has outstanding dirigibility in process control, and signaling rate is fast, the field data response speed with regard to corresponding raising, and there are cost advantage and speed advantage.Be applied on the Industry Control fieldbus, can effectively embody its dirigibility.The CAN bus belongs to the bus-type serial communication network, adopt many master modes, when a plurality of nodes sent information simultaneously on the network, the node that priority is low can initiatively withdraw from transmission, the impregnable continuation of the node that priority is high transmits, and has saved the arbitration time of bus greatly.In addition, the CAN node has the function of automatic pass closed bus under wrong serious situation.This agreement has outstanding reliability, and dirigibility has also just been avoided misoperation occurring in process control, makes the utility model work more reliable.The CAN bus can effectively be avoided the bus collision.In the CAN system, each node all has a unique address, and bus when work, the implication of the data of transmitting on the given logical address is fixed, for PLC thisly require that antijamming capability is strong, the device of measurement and precise control, be significant.And this addressing mode has outstanding advantage when relating to redundancy backup.
(4) description of drawings
Fig. 1 is the structured flowchart of utility model embodiment.
(5) embodiment
Specify principle of the present utility model below in conjunction with Figure of description:
With reference to explanation accompanying drawing 1, in this embodiment, the CAN bus interface is as CPU and communication interface by motherboard and outside input/output module, CPU adopts the LPC2368 processor, it sends the data acquisition broadcasting command as the core logic control device to the CAN bus, and it is auspicious to receive the data that load module sends by the CAN bus, and data are deposited into image area, the interpreting user program, tell about out data and put into the output image area, by the CAN bus data of output image area are mail to output module then.Its signal protection mode adopts photoelectricity to isolate.
Claims (1)
1. general PLC main controller module, comprise motherboard, it is characterized in that: also comprise CAN bus interface, CPU, photoisolator and communication interface, wherein CPU links to each other with outside output output module with described motherboard through the CAN bus interface successively, and communication interface then links to each other with CPU by photoisolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200252055U CN201237732Y (en) | 2008-07-07 | 2008-07-07 | Universal PLC principal controller module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200252055U CN201237732Y (en) | 2008-07-07 | 2008-07-07 | Universal PLC principal controller module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237732Y true CN201237732Y (en) | 2009-05-13 |
Family
ID=40650465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200252055U Expired - Fee Related CN201237732Y (en) | 2008-07-07 | 2008-07-07 | Universal PLC principal controller module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201237732Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991524A (en) * | 2015-07-21 | 2015-10-21 | 上海新力机器厂 | Simple controller applicable to human-computer interaction of numerical control machine tools |
| CN107861716A (en) * | 2017-11-09 | 2018-03-30 | 山东省计算中心（国家超级计算济南中心） | Software definition type control system and control method |
-
2008
- 2008-07-07 CN CNU2008200252055U patent/CN201237732Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991524A (en) * | 2015-07-21 | 2015-10-21 | 上海新力机器厂 | Simple controller applicable to human-computer interaction of numerical control machine tools |
| CN107861716A (en) * | 2017-11-09 | 2018-03-30 | 山东省计算中心（国家超级计算济南中心） | Software definition type control system and control method |
| CN107861716B (en) * | 2017-11-09 | 2021-03-02 | 山东省计算中心（国家超级计算济南中心） | Software-defined control system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100525233C (en) | CAN bus based signal real-time processing method | |
| CN104079677A (en) | Automatic allocation method of RS485 communication port address | |
| Tao et al. | A field programmable gate array implemented fibre channel switch for big data communication towards smart manufacturing | |
| US20170212490A1 (en) | Control and data-transfer system, gateway module, i/o module, and method for process control | |
| CN112199316B (en) | Configuration method and communication method of chain-type master-slave serial port communication device | |
| CN106873541A (en) | A kind of EtherCAT Distributed Servo kinetic control systems based on DSP | |
| CN201335955Y (en) | CAN bus intelligent electric device based on CANopen protocol | |
| CN202230355U (en) | CAN (Controller Area Network) remote signal acquisition system for numerical control machine | |
| CN103814367A (en) | Communications assembly comprising multi-channel logic communication via physical transmission path, for serial interchip data transmission | |
| CN201237732Y (en) | Universal PLC principal controller module | |
| CN103428050A (en) | Multipath CAN (controller area network) simulation system based on CAN bus | |
| CN101414177A (en) | System for converting serial port to Ethernet based on field bus data acquisition | |
| CN102098196A (en) | Data transmission method of blade server | |
| CN101383788A (en) | FlexRay-RS485 communication gateway and implementing method | |
| CN201156194Y (en) | General PLC analog outputting module | |
| CN201166803Y (en) | Input module for universal PLC on-off value | |
| CN201166801Y (en) | Input module for universal PLC analog | |
| CN201166802Y (en) | Output module for universal PLC on-off value | |
| CN213367785U (en) | On-board communication circuit and device based on CAN communication | |
| CN210380922U (en) | Protocol conversion device and system | |
| CN103414620A (en) | Double-channel CAN simulation system based on CAN buses | |
| CN204155117U (en) | A kind of big-power transducer control system | |
| Gao et al. | The design of a distributed control system based on CAN bus | |
| CN104133447A (en) | Engineering machine control system and engineering machine | |
| CN213024391U (en) | Vehicle-mounted terminal serial port expansion equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20090707 |