CN202583795U

CN202583795U - Hot-plug PLC multi-interface communication module

Info

Publication number: CN202583795U
Application number: CN 201220235240
Authority: CN
Inventors: 李玮; 吴晓闯; 白志斌; 张建江; 孟郁金; 王玉宏; 王耀华; 田涛; 李峰
Original assignee: SHANXI LIANHUA WEIYE TECHNOLOGY CO LTD
Current assignee: Beijing rockontrol Information Technology Co.,Ltd.; Rockontrol Technology Group Co ltd
Priority date: 2012-05-24
Filing date: 2012-05-24
Publication date: 2012-12-05
Anticipated expiration: 2022-05-24

Abstract

The utility model provides a hot-plug PLC multi-interface communication module and belongs to the technical field of PLC communication devices. The utility model solves technical problems and hot-plug PLC multi-interface communication module provided by the utility model integrating multiple communication ports together. The technical scheme employed by the utility model is that the hot-plug PLC multi-interface communication module includes an MCU core unit, a power source hot plug control unit, a man-machine interaction unit, a slot position identification unit and a communication unit. A power source port of the MCU core unit is connected with a power output terminal of the power source hot plug control unit. A communication port of the MCU core unit is connected with the communication unit. The MCU core unit is also connected with the man-machine interaction unit and the slot position identification unit. The hot-plug PLC multi-interface communication module provided by the utility model can be applied to the industrial control field widely.

Description

A kind of many interface communications of hot swappable PLC module

Technical field

Many interface communications of a kind of hot swappable PLC of the utility model module belongs to PLC communication device technical field.

Background technology

In industrial process control field, the application of Programmable Logic Controller PLC very extensively, it is programming mode easily, application mode flexibly, wide applications receives liking of numerous Mechanic Engineers deeply; On-the-spot in Industry Control, if PLC device hardware failure or software fault occur, all be that first shutdown system power supply overhauls or change faulty equipment more usually; And in the very high system of some reliability requirements, be not allow to shut down maintenance and shut down to change faulty board, at this moment just necessary charged hot plug fault plate; But when the hot plug fault plate; The source current spike can impact to the circuitry of hot plug, causes the work confusion, resets, even burn circuit; In addition, the interface signal line level can be shaken when inserting once more, thereby influences the operate as normal of other operating circuit in the total system, therefore, and the operate as normal of PLC in the time of must having the hot plug holding circuit to guarantee hot plug.

Along with the fast development and the widespread use of embedded computer technology, distributed information processing and the network communications technology, system equipment is diversified, site environment is complicated, can require the several data transmission interface can mix use, satisfies multiple demand; And present PLC communication module interface is single, and dirigibility and the property taken into account are relatively poor, in the PLC of complicacy system applies, often uses a plurality of communication modules together, brings potential safety hazard for the stable operation of system, increases the equipment operation cost simultaneously.

The utility model content

The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: the PLC communication module that the multiple PORT COM one of a kind of hot swappable collection is provided.

For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of many interface communications of hot swappable PLC module; Comprise MCU core cell, Power Supply Hot Swap control module, man-machine interaction unit, groove position recognition unit and communication unit; The power port of said MCU core cell links to each other with the power output end of Power Supply Hot Swap control module; The PORT COM of MCU core cell is connected with communication unit, and the MCU core cell also is connected with man-machine interaction unit and groove position recognition unit;

Said Power Supply Hot Swap control module includes current-limiting protection module, overvoltage protective module, hot-swapping controller module, Filtering Processing module and power transfer module; The output terminal of said current-limiting protection module links to each other with the input end of power transfer module after being connected in series overvoltage protective module, hot-swapping controller module and Filtering Processing module successively, and the output terminal of said power transfer module is the power output end of Power Supply Hot Swap control module;

Said communication unit includes RS485 interface, RS232 interface, CAN EBI, optical communication interface, RJ45 communication interface and USB interface.

Said MCU core cell adopts the STM32F103ZE processor.

The power output end of said power transfer module comprises a plurality of output port of power source of different electric pressures.

The beneficial effect that the utility model compared with prior art has is: the utility model adopts hot plug power supply control technology, has realized the module safe hot plug, has guaranteed the operate as normal of system; Integrated RS485 interface, RS232 interface, CAN EBI, optical communication interface, RJ45 communication interface and the multiple communication unit of USB interface are realized the quick transmission of data, satisfy multiple demand; Circuit is integrated in the circuit board, adopts the multi-layer PCB design, the anti-interference of intensifier; The employing chip price is cheap, and cost is low.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation:

Fig. 1 is the electrical block diagram of the utility model;

Among the figure: 1 is that MCU core cell, 2 is that Power Supply Hot Swap control module, 3 is that man-machine interaction unit, 4 is that groove position recognition unit, 5 is that communication unit, 6 is that current limliting protection module, 7 is that overvoltage protective module, 8 is that hot-swapping controller module, 9 is that Filtering Processing module, 10 is a power transfer module.

Embodiment

As shown in Figure 1; A kind of many interface communications of hot swappable PLC module; Comprise MCU core cell 1, Power Supply Hot Swap control module 2, man-machine interaction unit 3, groove position recognition unit 4 and communication unit 5; The power port of said MCU core cell 1 links to each other with the power output end of Power Supply Hot Swap control module 2, and the PORT COM of MCU core cell 1 is connected with communication unit 5, and MCU core cell 1 also is connected with man-machine interaction unit 3 and groove position recognition unit 4.

Said Power Supply Hot Swap control module 2 includes current-limiting protection module 6, overvoltage protective module 7, hot-swapping controller module 8, Filtering Processing module 9 and power transfer module 10; The output terminal of said current-limiting protection module 6 is connected in series overvoltage protective module 7, hot-swapping controller module 8 and Filtering Processing module 9 backs successively and links to each other with the input end of power transfer module 10; The output terminal of said power transfer module 10 is the power output end of Power Supply Hot Swap control module 2, and the power output end of power transfer module 10 comprises a plurality of output port of power source of different electric pressures.

The input end of above-mentioned current-limiting protection module 6 can directly link to each other with the backboard power supply; Get the 24V direct current from the backboard slot; 24V direct current through current-limiting protection module 6 and 7 pairs of inputs of overvoltage protective module carries out current limliting and overvoltage protection; The utility model was produced in hot plug process when moment, peak current was with big voltage, can prevent that spike from getting into circuit and causing and permanently destroy with transience, the controller in the above-mentioned hot-swapping controller module 8 has programmable limits electric current, overcurrent protection, latch and function such as operation automatically; 24V direct current after hot-swapping controller module 8 is handled is again after 9 filtering of Filtering Processing module; Send into power transfer module 10, power transfer module 10 is the direct supply of each circuit and the needed different electric pressures of module with the 24V voltage transitions, is whole device power supply.

Said communication unit 5 includes RS485 interface, RS232 interface, CAN EBI, optical communication interface, RJ45 communication interface and USB interface; Said USB interface adopts USB 3.0 full-duplex communication agreements, can be used as with backboard on high speed communication module communication and High Speed I/O module communication interface; Said CAN EBI adopts the CANopen agreement, can be used as with backboard on low speed I/O functional module communication interface; Said RJ45 communication interface is used for expanding remote I/O or expands long-range backboard, and said optical communication interface adopts 1 * 9 optical fiber communication interface, is used for expanding remote I/O or expands long-range backboard; Said RS485 interface and RS232 interface adopt Modbus communication protocol, have and telecommunications functions; Above-mentioned multiple PORT COM is realized the quick transmission of data, satisfies multiple demand.

Above-mentioned MCU core cell 1 is the core of data processing; Except the signal of remote I/O being gathered and computing through multiple interfaces such as Ethernet, CAN, RS485; Satisfy the calculation of parameter of control strategy; Outside the state of record controls operation and the logout when breaking down, also will be through the data transmission between USB communication completion and the upper strata machine; MCU core cell 1 adopts the STM32F103ZE processor; The STM32F103ZE processor is 32 processors based on the ARM core in the STM32 series; This series microprocessor have practicality, at a low price, characteristics such as power saving, high speed and volume be little; Also have functions such as low-power consumption sleep function, power-off reset locking, electrify restoration circuit, watchdog circuit, therefore, have extremely wide application at numerous areas such as Industry Control, instrument and meter, computing machine, household electrical appliances.

Above-mentioned man-machine interaction unit 3 can have 24 LED displays through the firm and hard existing interactive function of recessed lighting fitting, can show the information such as operation, warning, state indication of collection, the MCU core cell of observation signal; Above-mentioned groove position recognition unit 4 is made up of bus driver and the parallel data converter that changes serial, realizes the collection to backboard groove position signal.

It is the hot-swapping controller of TPS2491 that hot-swapping controller module 8 in the above-mentioned Power Supply Hot Swap control module 2 can adopt model, and the utility model circuit can be integrated in the circuit board, adopts the multi-layer PCB design, improves interference free performance; The utility model links to each other with backboard through Power Supply Hot Swap control module 2, and this connected mode is installed firmly, does not have connection cable, and the occasion circuit structure that can work in vibration is simple; Have very high reliability, can be applied to has the harsh system that requires to reliability.

Claims

1. many interface communications of hot swappable PLC module; It is characterized in that: comprise MCU core cell (1), Power Supply Hot Swap control module (2), man-machine interaction unit (3), groove position recognition unit (4) and communication unit (5); The power port of said MCU core cell (1) links to each other with the power output end of Power Supply Hot Swap control module (2); The PORT COM of MCU core cell (1) is connected with communication unit (5), and MCU core cell (1) also is connected with man-machine interaction unit (3) and groove position recognition unit (4);

Said Power Supply Hot Swap control module (2) includes current-limiting protection module (6), overvoltage protective module (7), hot-swapping controller module (8), Filtering Processing module (9) and power transfer module (10); The output terminal of said current-limiting protection module (6) is connected in series overvoltage protective module (7), hot-swapping controller module (8) and Filtering Processing module (9) back successively and links to each other with the input end of power transfer module (10), and the output terminal of said power transfer module (10) is the power output end of Power Supply Hot Swap control module (2);

Said communication unit (5) includes RS485 interface, RS232 interface, CAN EBI, optical communication interface, RJ45 communication interface and USB interface.

2. a kind of many interface communications of hot swappable PLC module according to claim 1 is characterized in that: said MCU core cell (1) adopts the STM32F103ZE processor.

3. a kind of many interface communications of hot swappable PLC module according to claim 1 and 2, it is characterized in that: the power output end of said power transfer module (10) comprises a plurality of output port of power source of different electric pressures.