CN203444473U - Expansion and anti-interference device for IO (Input/Output) serial port - Google Patents
Expansion and anti-interference device for IO (Input/Output) serial port Download PDFInfo
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- CN203444473U CN203444473U CN201320473612.3U CN201320473612U CN203444473U CN 203444473 U CN203444473 U CN 203444473U CN 201320473612 U CN201320473612 U CN 201320473612U CN 203444473 U CN203444473 U CN 203444473U
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Abstract
The utility model relates to the field of PLC (Programmable Logic Controller) production and application and particularly provides an expansion and anti-interference device for an IO (Input/Output) serial port. The expansion and anti-interference device comprises a sending board, a receiving board and a touch display screen, wherein the sending board is used for receiving, processing and sending IO board information; the receiving board is in wireless connection with the sending board and is used for receiving, processing and transmitting the IO board information; the touch display screen is connected with the receiving board and is used for displaying the IO board information and receiving and transmitting an operation command; the touch screen display is connected with a PLC; the IO board and the sending board are positioned in a machine main body; and the receiving board, the touch display screen and the PLC are positioned in a control cabinet. According to the expansion and anti-interference device, connecting wires between the equipment main body and the control cabinet is reduced; the anti-interference capacity is improved; and meanwhile, input and output point positions of the PLC are expanded.
Description
Technical field
The utility model relates to PLC production application field, is specifically related to a kind of expansion for IO serial ports and means for anti-jamming.
Background technology
In the process of controlling at the equipment of realizing, because the relatively large device space is limited, so outside, must use switch board to carry out distribution to it, to such an extent as to will use wire to be connected machine body and switch board after having joined line, realize signal transmission.Connected mode of the prior art, because of wire too much, must from strong current transformer or outside induces corresponding voltage, to such an extent as to PLC and touch-screen and other board class are produced to undesired signal.Meanwhile, because of the increase that machine input and output are counted, the some position of PLC also can increase accordingly, makes electrical control Cost Growth.
Utility model content
For above-mentioned technical matters, the utility model provides a kind of expansion in IO serial ports and means for anti-jamming, reduces the line between equipment body and switch board, improves antijamming capability, simultaneously the input and output point position of expansion technique of PLC.
The utility model provides a kind of expansion for IO serial ports and means for anti-jamming, comprise IO plate, be connected with IO plate for receiving, process and send the transmission board of IO plate information, with transmission board wireless connections for receiving, process and transmit the dash receiver of IO plate information, be connected with dash receiver for showing that IO plate is novel and receiving and transmit the touch display screen of operational order, described touch display screen is connected with PLC.IO plate and transmission board are positioned at machine body, and dash receiver, touch display screen and PLC are positioned at switch board.
Described IO plate is provided with controller and optical coupling isolation circuit, and described IO plate is realized multi-stage cascade by communication interface.Target P CB, IO plate, is provided with 8 tunnel input X points, 8 tunnel output Y points.The input and output point of IO plate all utilizes optical coupling isolation circuit entirely to isolate.Described IO plate is by the multistage cascade of 485 Interface realization, and output signal sends to transmission board.
On described transmission board, be provided with for connecting the subtending port of IO plate, gather IO plate information, subtending port is connected with the controller for the treatment of IO plate information, controller is connected with the transmission serial ports of processing IO plate information for wireless transmission, and the IO plate information sending after serial ports is processed controller by the mode of wireless telecommunications is sent to dash receiver.
On described dash receiver, be provided with the reception serial ports for wireless receiving IO plate information, with receive that serial ports is connected and for the treatment of and transmit the controller of IO plate information, be connected with controller and IO plate information be passed to the serial ports that is connected of touch display screen.Use single-chip microcomputer internal program that dash receiver is embodied as to a PLC, receive serial ports and be used for receiving radio data, connect serial ports and be used for and touch-screen communication.Dash receiver is connected software communication agreement and uses Mitsubishi's agreement with touch screen.Communication between dash receiver, transmission board and IO plate is used communications protocol to use MODBUS master-Slave Protocol.
The utility model, by adopting the mode of multi-stage cascade that the information of each IO plate is gathered and transmission board, is realized the expansion that PLC counts.Between dash receiver and transmission board, adopt the connected mode of wireless telecommunications, effectively reduce the line between machine body and switch board, reduce the effective IO of saving point when disturbing.Operating personnel can read the control command of sending with PLC for information about of IO plate in real time by operation touch display screen, effectively improve operability of the present utility model.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram
Fig. 2 is IO plate schematic diagram
Fig. 3 is transmission board schematic diagram
Fig. 4 is dash receiver schematic diagram
Embodiment
Below in conjunction with specific embodiment and Figure of description, the utility model is further described:
The utility model provides a kind of expansion for IO serial ports and means for anti-jamming, comprise IO plate, be connected with IO plate for receiving, process and send the transmission board of IO plate information, with transmission board wireless connections for receiving, process and transmit the dash receiver of IO plate information, be connected with dash receiver for showing IO plate information and reception and transmitting the touch display screen of operational order, described touch display screen is connected with PLC.Described IO plate is provided with controller and optical coupling isolation circuit, and described IO plate is realized multi-stage cascade by communication interface.On described transmission board, be provided with for connecting the subtending port of IO plate, subtending port is connected with the controller for the treatment of IO plate information, and controller is connected with the transmission serial ports of processing IO plate information for wireless transmission.On described dash receiver, be provided with the reception serial ports for wireless receiving IO plate information, with receive that serial ports is connected and for the treatment of and transmit the controller of IO plate information, be connected with controller and IO plate information be passed to the serial ports that is connected of touch display screen.
As shown in the figure, in specific embodiment, IO plate is selected AT89C52 single-chip microcomputer, and optical coupling isolation circuit module is selected PC817, and each IO mouth is all isolated by photoelectric coupled circuit, and uses independent current source power supply separately.Serial ports switching levels is used MAX232, and 2.4G technology is selected in wireless telecommunications, and cascade module is selected 485 communication chip SN75176.Cascade communication agreement is selected 485 hardware pattern, and choice of software MODBUS master-Slave Protocol has a 8 bit address position to set on every PCB.The power unit of IO plate, dash receiver and transmission board all uses plug-pin transformer, selects 2 tunnel 4 line output AC6V 50MA, and AC18V 300MA, realizes rectifying and wave-filtering and voltage stabilizing on plate.
The utility model Practical casing formula is installed or PCB gland is installed.Transmission board and IO plate are arranged at the body interior of machinery and equipment, and dash receiver, touch display screen and PLC are positioned at switch board inside.
Touch display screen is used the logical MT6070I of prestige synthetic fibre, and serial ports COM1 is used for connecing PLC, adopts 4 line system 485 patterns.Serial ports COM2 is used for being connected with dash receiver, realizes exchanges data.Touch display screen connects software communication agreement and uses Mitsubishi's agreement.
In use procedure, IO plate will be passed to the controller of transmission board for information about by subtending port.The controller of transmission board uses MODBUS master-Slave Protocol, by the mode of poll, the data of getting are put into RAM data, and by the mode of wireless telecommunications, be sent to the reception serial ports of dash receiver, the controller of dash receiver is by the output data decode of receiving and output on corresponding pin, send touch display screen to, touch display screen, after operating personnel's operation, feeds back to PLC by the information of IO plate, realizes the communication function between machine body and switch board.The director demon of touch display screen is divided into two parts, and first realizes the communication function of PLC, allows touch display screen carry out reading address; After second portion is good by the data preparation of pcb board, put into RAM and wait for that touch-screen reads.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.The content not being described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. the expansion for IO serial ports and means for anti-jamming, it is characterized in that comprising IO plate, be connected with IO plate for receiving, process and send the transmission board of IO plate information, with transmission board wireless connections for receiving, process and transmit the dash receiver of IO plate information, be connected with dash receiver for showing IO plate information and reception and transmitting the touch display screen of operational order, described touch display screen is connected with PLC.
2. the expansion for IO serial ports according to claim 1 and means for anti-jamming, is characterized in that described IO plate is provided with controller and optical coupling isolation circuit, and described IO plate is realized multi-stage cascade by communication interface.
3. according to the expansion for IO serial ports claimed in claim 1 and means for anti-jamming, it is characterized in that being provided with for connecting the subtending port of IO plate on described transmission board, subtending port is connected with the controller for the treatment of IO plate information, and controller is connected with the transmission serial ports of processing IO plate information for wireless transmission.
4. according to the expansion for IO serial ports claimed in claim 1 and means for anti-jamming, it is characterized in that being provided with on described dash receiver the reception serial ports for wireless receiving IO plate information, with receive that serial ports is connected and for the treatment of and transmit the controller of IO plate information, be connected with controller and IO plate information be passed to the serial ports that is connected of touch display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473612.3U CN203444473U (en) | 2013-08-05 | 2013-08-05 | Expansion and anti-interference device for IO (Input/Output) serial port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320473612.3U CN203444473U (en) | 2013-08-05 | 2013-08-05 | Expansion and anti-interference device for IO (Input/Output) serial port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444473U true CN203444473U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320473612.3U Expired - Fee Related CN203444473U (en) | 2013-08-05 | 2013-08-05 | Expansion and anti-interference device for IO (Input/Output) serial port |
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| Country | Link |
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| CN (1) | CN203444473U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168467A (en) * | 2017-05-26 | 2017-09-15 | 广州视源电子科技股份有限公司 | Intelligent flat plate of capacitive screen |
| WO2018214375A1 (en) * | 2017-05-26 | 2018-11-29 | 广州视源电子科技股份有限公司 | Smart tablet with capacitive touch screen |
| CN110347105A (en) * | 2019-06-21 | 2019-10-18 | 中国科学院城市环境研究所 | A kind of decentralized environment facility Internet of Things monitor terminal equipment |
-
2013
- 2013-08-05 CN CN201320473612.3U patent/CN203444473U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168467A (en) * | 2017-05-26 | 2017-09-15 | 广州视源电子科技股份有限公司 | Intelligent flat plate of capacitive screen |
| WO2018214375A1 (en) * | 2017-05-26 | 2018-11-29 | 广州视源电子科技股份有限公司 | Smart tablet with capacitive touch screen |
| CN110347105A (en) * | 2019-06-21 | 2019-10-18 | 中国科学院城市环境研究所 | A kind of decentralized environment facility Internet of Things monitor terminal equipment |
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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: 20140219 Termination date: 20160805 |