CN204009493U - PLC interface conversion box - Google Patents
PLC interface conversion box Download PDFInfo
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- CN204009493U CN204009493U CN201420342627.0U CN201420342627U CN204009493U CN 204009493 U CN204009493 U CN 204009493U CN 201420342627 U CN201420342627 U CN 201420342627U CN 204009493 U CN204009493 U CN 204009493U
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Abstract
The utility model discloses a kind of PLC interface conversion box, comprise control module, power module, Keysheet module, driver module, display module and a plurality of communication interface module, the gating signal output terminal of Keysheet module is connected with the signal input part of control module, control module is identified the communication interface type of gating, the output terminal of control module is connected with the input end of driver module, and the output terminal of driver module connects and drive the communication interface module work of the corresponding display module of control and corresponding gating; Power module is connected with driver module with control module respectively.The utility model can communicate with the programmable logic controller (PLC) of many different brands computing machine, the interface of protection PLC.
Description
Technical field
The utility model relates to Automation Specialty teaching equipment, especially a kind of PLC interface conversion box.
Background technology
Existing PLC communication data line be take serial ports and USB interface substantially as main, especially serial port form, a computing machine only has one can use serial ports substantially, realize a computing machine to the constantly plug of programming of many programmable controllers, cause the interface of PLC to occur loose contact, broken needle or transmission line fracture.Even USB interface form, the USB interface that can use on a computing machine is also more limited, inconvenient during use.
At present automated production Practical training equipment on the market many by programmable controller as control core, common brand has Siemens, Mitsubishi, Omron, remittance river etc., each famous brand is exported the Programme Line that all has oneself for data, cannot be general, and expensive.
In addition, the type that is converted to RS232 in USB interface is specialized in market more, few for the product of comprehensive PLC converter, and its conversion can only be confined to the PLC use of certain brand.As: the PLC interface conversion box that the precious science and technology of industry is released, its port is fixing corresponding brand; The USB that the digital monopolized store of Warburg Pincus releases in addition turns 4 serial converter serial hubs, and request for utilization programming software has the function of automatic identification com port, and the programming software of Mitsubishi does not just possess this function.As can be seen here, current product on the market can only be realized many plc data chained transforms for certain brand, and the PLC converter of comprehensive multiple brand not yet has.
Utility model content
In order to address the above problem, when the utility model provides many programmable controllers of a computer control of a kind of solution, be not subject to the PLC interface conversion box of computing machine upper port restricted number, the problem of avoiding the connection on frequent plug programmable controller to cause connection to damage.
The utility model is realized by following technical proposals:
PLC interface conversion box, comprise control module, power module, Keysheet module, driver module, display module and a plurality of communication interface module, the gating signal output terminal of Keysheet module is connected with the signal input part of control module, control module is identified the communication interface type of gating, the output terminal of control module is connected with the input end of driver module, and the output terminal of driver module connects and drive the communication interface module work of the corresponding display module of control and corresponding gating; Power module is connected with driver module with control module respectively.
The further improvement project of the utility model comprises:
The button of described Keysheet module comprises gear button and the stopping key for release of selecting a gating interlocking.
Described gear button comprises mode of operation control button and communication interface module gating button, and each button of described gear button is controlled respectively the described communication interface module that gating is corresponding.
Described driver module comprises driving chip, drives each output terminal of chip by corresponding relay and each communication interface module, to be connected in series respectively, and the work that each communication interface module is controlled in relay folding whether.
Described display module comprises light emitting diode, the series circuit of a light emitting diode and a current-limiting resistance is also connected in the two ends of relay described in each, the duty of synchronous indicating relay, the communication interface module of clear indication work, the negative electrode of light emitting diode is connected with the corresponding output end of described driving chip, and the anode of light emitting diode is connected with corresponding current-limiting resistance; The two ends of each relay are parallel with a fly-wheel diode, and decrease uptake inverse electromotive force is protected other electronic devices and components, and the anode of this fly-wheel diode is connected with driving the corresponding output end of chip, and the negative electrode of this fly-wheel diode is connected with power supply.
The described relay being communicated with described mode of operation control button is that double-pole four is thrown relay, and the described relay being communicated with communication interface module gating button is dpdt relay.
Advantage of the present utility model:
(1) the utility model PLC interface conversion box utilizes a plurality of PLC communication interface modules to connect the scheme of the programmable logic controller (PLC) of many different brands simultaneously, realized external computing machine by any PLC communication interface module of the utility model gating, communicate with external corresponding programmable logic controller (PLC), avoid constantly plug, caused the interface of PLC to occur loose contact, broken needle or transmission line fracture.
(2) the utility model can be changed mode of operation, and communication control equipment is diversification more, and range of application is wider.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is the local module 104 physical circuit figure of Fig. 1;
Fig. 3 is the sequential control process flow diagram of the utility model control module plug-in control module;
Fig. 4 is the process flow diagram of the gating communication interface module work of Fig. 3 step 006.
Embodiment
Below in conjunction with accompanying drawing, the utility model PLC interface conversion box is further described:
Embodiment 1:
As Fig. 1, the utility model PLC interface conversion box, comprise Keysheet module 101, control module 102, driver module 103, power module 105, display module and a plurality of communication interface module 104, the gating signal output terminal of Keysheet module 101 is connected with the signal input part of control module 102, the communication interface type of 102 pairs of gatings of control module is identified, the output terminal of control module 102 is connected with the input end of driver module 103, and the output terminal of driver module connects and drive the communication interface module work of the corresponding display module of control and corresponding gating; Power module 105 is connected with driver module 103 with control module 102 respectively.
Wherein, PLC is programmable logic controller (PLC), and control module adopts the single-chip microcomputer that model is AT89C51.
The button of Keysheet module 101 comprises gear button and the stopping key for release of selecting a gating interlocking, by the programmed control of control module 102, the signalling channel corresponding to different gears interlocks, once selected passage, stopping key of external interrupt must be pressed, just passage can be reselected.
Gear button comprises mode of operation control button and communication interface module gating button, each button of gear button is controlled respectively the communication interface module that gating is corresponding, communication interface module can be dissimilar for male and female, also can be the communication interface module of different brands, do not change the communications protocol of communication interface module, improved versatility of the present utility model; Communication interface module in the present embodiment is RS232, and the communication interface of preparation expansion has the communication interfaces such as RS485, USB.
The relay being communicated with mode of operation control button is that double-pole four is thrown relay, and it adopts model is G2R-24-DC5, and the described relay being communicated with communication interface module gating button is dpdt relay, and it adopts model is OSA-SH-205DM5.
Driver module 103 comprises driving chip, in the present embodiment, adopting model is the driving chip of ULN2003A, drive each output terminal of chip by corresponding relay and each communication interface module, to be connected in series respectively, the work that each communication interface module is controlled in relay folding whether.
As Fig. 2, in working mode control circuit 1042, touch screen control circuit comprises relay R L7, sustained diode 13, light emitting diode D15(touch-screen pilot lamp), current-limiting resistance R16 and touch-screen communication interface module J7, the first output terminal of driver module is connected with the 1C of relay R L7 end, the parallel circuit of the series circuit of light emitting diode D15 and current-limiting resistance R16 and sustained diode 13 is connected on the two ends of relay R L7, wherein, the anode D7 end of light emitting diode D15 and the D7 end of current-limiting resistance R16 are connected, the anode 1C end of sustained diode 13 and the negative electrode 1C end of light emitting diode D15 are connected with the 1C end of relay R L7, the negative electrode of sustained diode 13, one end of one end of current-limiting resistance R16 and relay R L7 is connected with power end VCC respectively, the J72 of relay R L7 is connected with J73 end with the J72 of touch-screen communication interface module J7 respectively with J73 end, the J82 of relay R L7 is connected with J83 end with the J82 of PC communication interface module J8 respectively with J83 end, relay R L7 is connected with touch-screen communication interface module J7 and PC communication interface module J8's, realizes the switching of mode of operation, 22 ends of relay R L7 are connected respectively 22 ends of relay 1# and 3 ends of PLC communication interface module J1 with 3 ends, realize communicating by letter of the external touch-screen of touch-screen communication interface module J7 and the external PLC of PLC communication interface module J1.
In working mode control circuit 1042, PC control circuit (PC control circuit) comprises relay R L8, sustained diode 14, light emitting diode D16(PC pilot lamp), current-limiting resistance R17 and PC communication interface module J8, the second output terminal of driver module is connected with the 1C of relay R L8 end, the output terminal P2.7 end of control module is by the series circuit ground connection of light emitting diode D16 and current-limiting resistance R17, and the D8 end of the negative electrode D8 of light emitting diode D16 end and current-limiting resistance R17 is connected; The parallel circuit of sustained diode 14 is connected on the two ends of relay R L8, and the anode 1C end of sustained diode 14 is connected with the 1C end of relay R L8, and one end of the negative electrode of sustained diode 14 and relay R L8 is connected with power supply VCC end respectively; The J75 of relay R L8 is connected with J78 end with the J75 of touch-screen communication interface module J7 respectively with J78 end, the J85 of relay R L8 is connected with J88 end with the J85 of PC communication interface module J8 with J88 end, relay R L8 is connected with touch-screen communication interface module J7 and PC communication interface module J8's, realizes the switching of mode of operation; 55 ends of relay R L8 are connected respectively 55 ends of relay 1# and 8 ends of PLC communication interface module J1 with 8 ends, realize communicating by letter of the external PC of PC communication interface module J8 and the external PLC of PLC communication interface module J1.
Change mode of operation, communication control equipment is diversification more, and range of application is wider.
PLC communication interface module gate control circuit 1041, comprise relay 1#, sustained diode 7, light emitting diode D1(PLC communication interface module gating pilot lamp), current-limiting resistance R12 and PLC communication interface module J1, the 3rd output terminal of driver module is connected with the RL1 of relay 1# end, the parallel circuit of the series circuit of light emitting diode D1 and continued flow resistance R12 and sustained diode 7 is connected on the two ends of relay 1#, wherein, the anode D1 end of light emitting diode D1 and the D1 end of current-limiting resistance R12 are connected, the anode RL1 end of sustained diode 7 and the negative electrode RL1 end of light emitting diode D1 are connected with the RL1 end of relay 1#, one end of the negative electrode of sustained diode 7 and current-limiting resistance R12 is connected with the power end VCC of relay 1# respectively, the J12 of relay 1# is connected with J15 end with the J12 of PLC communication interface module J1 respectively with J15 end, and 22 ends of relay 1# are connected with 22 ends of relay R L7 and 55 ends of relay R L8 respectively with 55 ends.
According to the PLC communication interface module of the utility model PLC interface conversion box design number, PLC communication interface module gate control circuit 1041 can arrange n, n is more than or equal to 1, thus, at n of the present utility model PLC communication interface module, connect the programmable logic controller (PLC) of n platform different brands simultaneously, by any PLC communication interface module of gating, the external computing machine of the utility model and external corresponding programmable logic controller (PLC) communicate, avoid constantly plug, caused the interface of PLC to occur loose contact, broken needle or transmission line fracture.
The PLC communication interface module gate control circuit 1041 of the present embodiment can arrange 6, and the line connecting method of 6 PLC communication interface module gate control circuits 1041 is the same, does not repeat herein.
It is 1N4007 that above-mentioned all fly-wheel diodes adopt model.
Principle of work: the touch-screen control button of controlling button when mode of operation is pressed, producing a low level signal triggers, the output terminal output high level of AT89C51 single-chip microcomputer, ULN2003A drives the first output terminal output low level of chip, light emitting diode D15(touch-screen pilot lamp) bright demonstration, the J72 end of relay R L7 is held and the j75 end of 3 ends, relay R L8 and the j78 of 55 ends and relay R L8 and the closing of contact connection simultaneously of 8 ends with the J73 of 22 ends, relay R L7, touch-screen communication interface module J7 work, under touch-screen mode of operation; When No. 1 button of communication interface module gating button is pressed, producing a low level signal triggers, the output terminal output high level of AT89C51 single-chip microcomputer, ULN2003A drives the 3rd output terminal output low level of chip, the bright demonstration of light emitting diode D1, J12 end and 22 ends of relay 1#, and the J15 of relay 1# end and the closing of contact connection simultaneously of 55 ends, PLC communication interface module J1 work; So far, touch-screen communication interface module J7 and PLC communication interface module J1 connect and can communicate.
Relay R L7 and relay R L8 connect normally closed contact, are PC mode of operations, and its principle of work is identical with touch-screen mode of operation.
According to circuit connecting method in Fig. 2, be summarised as: display module comprises light emitting diode herein, the series circuit of a light emitting diode and a current-limiting resistance is also connected in the two ends of relay described in each, the duty of synchronous indicating relay, the communication interface module of clear indication work, the negative electrode of light emitting diode is connected with the corresponding output end of described driving chip, and the anode of light emitting diode is connected with corresponding current-limiting resistance; The two ends of each relay are parallel with a fly-wheel diode, and decrease uptake inverse electromotive force is protected other electronic devices and components, and the anode of this fly-wheel diode is connected with driving the corresponding output end of chip, and the negative electrode of this fly-wheel diode is connected with power supply.
Embodiment 2:
On the basis of embodiment 1, the present embodiment has been done following improvement:
The control module 102 of PLC interface conversion box is built-in with program controling module, and its sequential control step is as follows:
S1: input/output signal initialization, by Keysheet module 101 input trigger pips, 102 pairs of trigger pips of control module are identified, selected mode of operation;
S2: by the input trigger pip again of Keysheet module 101,102 pairs of trigger pips of again inputting of control module are identified, the selected trigger pip of pressing communication interface module gating button, according to the trigger pip of pressing communication interface module gating button, control module 101 is controlled driver module 103 and is driven the bright demonstration of corresponding display module, and the corresponding communication interface module of gating.
As Fig. 3, step S1 also comprises the steps:
Step 001: mode of operation is controlled key-press input trigger pip;
Step 002: by judging whether touch-screen control button is pressed, the mode of operation of judgement PLC interface conversion box, presses if touch-screen is controlled button, after time delay, the bright demonstration of touch-screen pilot lamp, open touch-screen mode of operation, otherwise judge that whether PC control button is pressed, and presses if PC is controlled button, after time delay, the bright demonstration of PC pilot lamp, opens PC mode of operation, otherwise operating procedure 002;
Step 003: whether judgement stops key presses, if pressed, operating procedure 001, otherwise operating procedure 004.
Step 004: by judging whether touch-screen control button is pressed, and judges whether the mode of operation of PLC interface conversion box is changed, and presses the bright demonstration of touch-screen pilot lamp, operating procedure 003, otherwise operating procedure 005 if touch-screen is controlled button;
Step 005: judge whether PC control button is pressed, and presses if PC is controlled button, and PC pilot lamp shows, operating procedure 003, otherwise operating procedure 006.
Step S2 also comprises the steps:
Step 006: the trigger pip by 102 pairs of communication interface module gating key-press inputs of control module is identified judgement, 102 pairs of all communication interface module gating buttons of control module scan, if trigger pip equates with the trigger pip of corresponding communication interface module gating button, through time delay, control module is connected corresponding relay, the corresponding bright demonstration of light emitting diode lamp, corresponding communication interface module work, operating procedure 002, otherwise operating procedure 003.
As Fig. 4, the concrete steps that in step 006, control module scans all communication interface module gating buttons are as follows:
Step 0061: judge whether trigger pip is the trigger pip that 1# button is keyed in, if, time delay 16ms, the list data of call gate 1# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 1# relay (being relay 1#) and pilot lamp light emitting diode D1 connect, and 1# passage links successfully, operating procedure 002, otherwise operating procedure 0062;
Step 0062: judge whether trigger pip is the trigger pip that 2# button is keyed in, if, time delay 16ms, the list data of call gate 2# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 2# relay and corresponding pilot lamp light emitting diode are connected, and 2# passage links successfully, operating procedure 002, otherwise operating procedure 0063;
Step 0063: judge whether trigger pip is the trigger pip that 3# button is keyed in, if, time delay 16ms, the list data of call gate 3# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 3# relay and corresponding pilot lamp light emitting diode are connected, and 3# passage links successfully, operating procedure 002, otherwise operating procedure 0064;
Step 0064: judge whether trigger pip is the trigger pip that 4# button is keyed in, if, time delay 16ms, the list data of call gate 4# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 4# relay and corresponding pilot lamp light emitting diode are connected, and 4# passage links successfully, operating procedure 002, otherwise operating procedure 0065;
Step 0065: judge whether trigger pip is the trigger pip that 5# button is keyed in, if, time delay 16ms, the list data of call gate 5# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 5# relay and corresponding pilot lamp light emitting diode are connected, and 5# passage links successfully, operating procedure 002, otherwise operating procedure 0066;
Step 0066: judge whether trigger pip is the trigger pip that 6# button is keyed in, if, time delay 16ms, the list data of call gate 6# passage, deliver to the output terminal P2 mouth of AT89C51 single-chip microcomputer, 6# relay and corresponding pilot lamp light emitting diode are connected, and 6# passage links successfully, operating procedure 002, otherwise operating procedure 003;
The utility model is not limited to above-mentioned embodiment, and the further expansion that those of ordinary skill in the art makes according to the utility model all falls into protection domain of the present utility model.
Claims (6)
1.PLC interface conversion box, it is characterized in that: comprise control module, power module, Keysheet module, driver module, display module and a plurality of communication interface module, the gating signal output terminal of Keysheet module is connected with the signal input part of control module, control module is identified the communication interface type of gating, the output terminal of control module is connected with the input end of driver module, and the output terminal of driver module connects and drive the communication interface module work of the corresponding display module of control and corresponding gating; Power module is connected with driver module with control module respectively.
2. PLC interface conversion box according to claim 1, is characterized in that: the button of described Keysheet module comprises gear button and the stopping key for release of selecting a gating interlocking.
3. PLC interface conversion box according to claim 2, it is characterized in that: described gear button comprises mode of operation control button and communication interface module gating button, and each button of described gear button is controlled respectively the described communication interface module that gating is corresponding.
4. PLC interface conversion box according to claim 3, it is characterized in that: described driver module comprises driving chip, drive each output terminal of chip by corresponding relay and each communication interface module, to be connected in series respectively, the work that each communication interface module is controlled in relay folding whether.
5. PLC interface conversion box according to claim 4, it is characterized in that: described display module comprises light emitting diode, the series circuit of a light emitting diode and a current-limiting resistance is also connected in the two ends of relay described in each, the duty of synchronous indicating relay, the communication interface module of clear indication work, the negative electrode of light emitting diode is connected with the corresponding output end of described driving chip, and the anode of light emitting diode is connected with corresponding current-limiting resistance; The two ends of each relay are parallel with a fly-wheel diode, and decrease uptake inverse electromotive force is protected other electronic devices and components, and the anode of this fly-wheel diode is connected with driving the corresponding output end of chip, and the negative electrode of this fly-wheel diode is connected with power supply.
6. PLC interface conversion box according to claim 5, is characterized in that: the described relay being communicated with described mode of operation control button is that double-pole four is thrown relay, and the described relay being communicated with communication interface module gating button is dpdt relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420342627.0U CN204009493U (en) | 2014-06-26 | 2014-06-26 | PLC interface conversion box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420342627.0U CN204009493U (en) | 2014-06-26 | 2014-06-26 | PLC interface conversion box |
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| CN204009493U true CN204009493U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420342627.0U Expired - Fee Related CN204009493U (en) | 2014-06-26 | 2014-06-26 | PLC interface conversion box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035369A (en) * | 2014-06-26 | 2014-09-10 | 广州市轻工高级技工学校 | PLC (programmable logic controller) interface converter |
| CN107038782A (en) * | 2017-04-14 | 2017-08-11 | 力纳克传动系统（深圳）有限公司 | An a kind of key-lock and the simulation control box device of unblock |
-
2014
- 2014-06-26 CN CN201420342627.0U patent/CN204009493U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035369A (en) * | 2014-06-26 | 2014-09-10 | 广州市轻工高级技工学校 | PLC (programmable logic controller) interface converter |
| CN104035369B (en) * | 2014-06-26 | 2017-06-13 | 广州市轻工高级技工学校 | Plc interface converter |
| CN107038782A (en) * | 2017-04-14 | 2017-08-11 | 力纳克传动系统（深圳）有限公司 | An a kind of key-lock and the simulation control box device of unblock |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150626 |
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| EXPY | Termination of patent right or utility model |