CN103246229A - Single-line PLC (programmable logic controller) data display instrument - Google Patents
Single-line PLC (programmable logic controller) data display instrument Download PDFInfo
- Publication number
- CN103246229A CN103246229A CN2013101417328A CN201310141732A CN103246229A CN 103246229 A CN103246229 A CN 103246229A CN 2013101417328 A CN2013101417328 A CN 2013101417328A CN 201310141732 A CN201310141732 A CN 201310141732A CN 103246229 A CN103246229 A CN 103246229A
- Authority
- CN
- China
- Prior art keywords
- plc
- data
- digital display
- display meter
- single line
- 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.)
- Pending
Links
Images
Landscapes
- Selective Calling Equipment (AREA)
Abstract
A single-line PLC data display instrument comprises PLC data output ports and a PLC signal receiving port, wherein one of the PLC data output ports is connected with the PLC signal receiving port; a drive program of the digital display table is added in a PLC program; Atmega16 is taken as a main control chip for receiving data and driving a digital tube to be displayed; a counter, a timer and a register are sent into a designated buffer zone of the drive program; and a numerical value sent into the buffer zone is displayed in real time through a four-bit digital tube. The PLC data output port is connected with the PLC signal receiving port, a signal-line serial transmission manner is used, and complicated data transmission can be complicated by using only one PLC output port, so that PLC signal receiving ports are saved. The single-line PLC data display instrument has the advantages as follows: inconvenience in the prior art is overcome, the structure is simple, the operation is convenient and fast, the cost is low, the stability is high, the application range is wide, and the like, so that the PLC signal receiving ports can be saved and high speed data transmission and display functions can be realized.
Description
Technical field the present invention relates to a kind of instrument and meter, especially a kind of single line PLC digital display meter.
PLC uses very general in the present Industry Control of background technology, its stability has obtained many slip-stick artists' approval, but PLC does not have man-machine interface, if the user wants to know that some operation numerical value of PLC then need be by touch-screen, it is higher that but the touch-screen price compares, this does not just need a lot of user of displaying contents to some, cause waste, so the PLC digital display meter arises at the historic moment, but most PLC digital display meter adopts two PLC interfaces transmission data, a data bit, a clock bit on the market at present, this just need take the interface of two PLC simultaneously, completely inconvenience.
Summary of the invention the present invention is directed to the deficiency that prior art has, and a kind of employing single line transmission is provided, and only needs the single line PLC digital display meter of a PLC delivery outlet, to save the PLC output port, finishes high speed data transfer and Presentation Function.
The present invention includes plc data output port and PLC receiver port, the data output port of PLC links to each other with the PLC receiver port; In the PLC program, add the driver of digital display meter, and use Atmega16 to receive and drive the main control chip that charactron shows as data, and counter, timer, register sent into the appointed buffer territory of this driver, by the group of four figures pipe numerical value of sending into the buffer area is shown in real time; The Atmega16 microprocessor is handled the data that spread out of among the PLC, and drives charactron, and be 0.1 second update time; Driver is as the communication protocol of PLC and single line PLC digital display meter agreement, makes the PLC can be at the output port outputting data signals; The transistor circuit of PLC signal receiving end, the high voltage signal that PLC is sent is converted into the voltage range that little process chip Atmega16 can accept.
After adopting said structure, because the plc data output port links to each other with the PLC signal receiving end, adopt the single serial transmission mode, only just can finish complicated data with a PLC output port and transmit, saved the output port of PLC.
Advantage of the present invention is: overcome prior art and had inconvenience, possessed simple in structure, simple operation, advantage such as cost is low, stability is high, and is applied widely.The PLC output port can either be saved, high speed data transfer and Presentation Function can be finished again.
Description of drawings Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is data flowchart of the present invention.
Embodiment comprises plc data output port 1 and PLC receiver port 2 in the synoptic diagram of Fig. 1, single line PLC digital display meter shown in Figure 2, the data output port of PLC links to each other with the PLC receiver port; In the PLC program, add the driver of digital display meter, and use Atmega16 to receive and drive the main control chip that charactron shows as data, and counter, timer, register sent into the appointed buffer territory of this driver, by the group of four figures pipe numerical value of sending into the buffer area is shown in real time; The Atmega16 microprocessor is handled the data that spread out of among the PLC, and drives charactron, and be 0.1 second update time; Driver is as the communication protocol of PLC and single line PLC digital display meter agreement, makes the PLC can be at the output port outputting data signals; The transistor circuit of PLC signal receiving end, the high voltage signal that PLC is sent is converted into the voltage range that little process chip Atmega16 can accept.
After PLC need export the register value that shows data and changes, will be to the output port output data of PLC, after single line PLC digital display meter main control chip receiving end received signal, main control chip carried out the processing of data and drives the real-time demonstration of group of four figures pipe.The concrete communication protocol of the present invention is as follows, after certain numerical value changes in the PLC register, (numerical value of bits per inch sign indicating number pipe is 0-9 and is scale-of-two output in this single line PLC digital display meter to send 5 high level pulses continuously at the PLC output port, when showing 78 or 79, be that the maximum situations of continuous high level pulse are continuous 4 high impulses), after detecting first high level, timer detects signal and continuous monitoring four times every 10ms, whether detection afterwards has continuous two low levels is checking signal, gather the binary code that sends for PLC for 16 times afterwards again and be numerical information, send into Atmega16 data buffer area territory, the timer signal of the data receiver of waiting for PLC that resets simultaneously, after collecting the partial data signal, main control chip drives group of four figures pipe to the information via processing that collects again and dynamically shows.If the main control chip of single line PLC digital display meter does not detect continuous two low level signals after detecting and not being five continuous high level pulses or detecting five continuous high pulse signals in the data transmission procedure of data, illustrate that this single line PLC digital display meter detects undesired signal, signal is abandoned, will wait for again receiving the signal that the plc data receiving end is sent.This single line PLC digital display meter also is provided with watchdog function, and flicker in per 1 second once can observe whether operate as normal of this single line PLC digital display meter intuitively.
Claims (4)
1. a single line PLC digital display meter comprises plc data output port and PLC receiver port, it is characterized in that: the data output port of PLC links to each other with the PLC receiver port; In the PLC program, add the driver of digital display meter, and use Atmega16 to receive and drive the main control chip that charactron shows as data, and counter, timer, register sent into the appointed buffer territory of this driver, by the group of four figures pipe numerical value of sending into the buffer area is shown in real time.
2. a kind of single line PLC digital display meter according to claim 1, it is characterized in that: described Atmega16 microprocessor is handled the data that spread out of among the PLC, and drives charactron, and be 0.1 second update time.
3. a kind of single line PLC digital display meter according to claim 1 is characterized in that: described driver is as the communication protocol of PLC and single line PLC digital display meter agreement, makes the PLC can be at the output port outputting data signals.
4. a kind of single line PLC digital display meter according to claim 1, it is characterized in that: the transistor circuit of described PLC signal receiving end, the high voltage signal that PLC is sent is converted into the voltage range that little process chip Atmega16 can accept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101417328A CN103246229A (en) | 2013-04-23 | 2013-04-23 | Single-line PLC (programmable logic controller) data display instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101417328A CN103246229A (en) | 2013-04-23 | 2013-04-23 | Single-line PLC (programmable logic controller) data display instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103246229A true CN103246229A (en) | 2013-08-14 |
Family
ID=48925815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101417328A Pending CN103246229A (en) | 2013-04-23 | 2013-04-23 | Single-line PLC (programmable logic controller) data display instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103246229A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527918A (en) * | 2015-12-11 | 2016-04-27 | 中山联合光电科技股份有限公司 | Method for realizing one-way single-wire communication between two PLCs through I/O port |
| CN110602007A (en) * | 2019-08-19 | 2019-12-20 | 惠州市唐群座椅科技股份有限公司 | PWM signal transmission method and system of automobile seat ventilation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897513A (en) * | 2005-07-15 | 2007-01-17 | 华为技术有限公司 | Series telecommunication of monolithic processor and monolithic unit control system |
| CN2903921Y (en) * | 2006-04-29 | 2007-05-23 | 山东新华医疗器械股份有限公司 | PLC digital display apparatus |
| CN201583831U (en) * | 2009-11-24 | 2010-09-15 | 昆明理工大学 | Shift series type digital display meter |
| CN202352296U (en) * | 2011-11-23 | 2012-07-25 | 苏州艾隆科技有限公司 | Digital display system based on control of programmable logic controller (PLC) |
-
2013
- 2013-04-23 CN CN2013101417328A patent/CN103246229A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897513A (en) * | 2005-07-15 | 2007-01-17 | 华为技术有限公司 | Series telecommunication of monolithic processor and monolithic unit control system |
| CN2903921Y (en) * | 2006-04-29 | 2007-05-23 | 山东新华医疗器械股份有限公司 | PLC digital display apparatus |
| CN201583831U (en) * | 2009-11-24 | 2010-09-15 | 昆明理工大学 | Shift series type digital display meter |
| CN202352296U (en) * | 2011-11-23 | 2012-07-25 | 苏州艾隆科技有限公司 | Digital display system based on control of programmable logic controller (PLC) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527918A (en) * | 2015-12-11 | 2016-04-27 | 中山联合光电科技股份有限公司 | Method for realizing one-way single-wire communication between two PLCs through I/O port |
| CN110602007A (en) * | 2019-08-19 | 2019-12-20 | 惠州市唐群座椅科技股份有限公司 | PWM signal transmission method and system of automobile seat ventilation system |
| CN110602007B (en) * | 2019-08-19 | 2022-06-14 | 惠州市唐群座椅科技股份有限公司 | PWM signal transmission method and system of automobile seat ventilation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8713235B2 (en) | Low latency interrupt collector | |
| CN103454996A (en) | Master-slave computer system and control method thereof | |
| CN105389286A (en) | BISS C protocol data acquisition and display apparatus | |
| CN102023625B (en) | SSI (Small Scale Integration) data transmitter for rotary encoder based on CPLD (Complex Programmable Logic Device)/FPGA (Field Programmable Gate Array) | |
| CN204009751U (en) | Gesture identifying device | |
| CN105004402A (en) | Dynamic liquid level wireless monitoring method and system | |
| CN103246229A (en) | Single-line PLC (programmable logic controller) data display instrument | |
| CN203250170U (en) | Inverter operation panel of knob encoder | |
| CN201215974Y (en) | Communication interface without polarity | |
| US20060195272A1 (en) | Real-time measuring system used for motor driver | |
| CN204334563U (en) | A kind of device of automatic detection LVDS signalling channel number | |
| CN203069666U (en) | Intelligent high-precision digital voltmeter | |
| CN204406391U (en) | A kind of data of optical fiber gyroscope R-T unit based on SPI | |
| CN204166330U (en) | There is the digital versatile measure and control device of communication function | |
| CN204556718U (en) | A kind of based on monolithic processor controlled hyperchannel small area analysis real-time acquisition system | |
| CN204731200U (en) | Digital supersonic flaw detector | |
| CN103246419B (en) | The method of the judgement touch point of a kind of capacitance touch screen and touch-screen | |
| CN203444516U (en) | Automatically ball-counting apparatus of intelligent ball-picking robot | |
| CN205539463U (en) | Ultrasonic distance measurement system based on standardized SCI serial ports | |
| CN204945274U (en) | A kind of detector being applicable to multiple kinds | |
| CN204244368U (en) | Video conferencing system touch control display terminal | |
| CN204044914U (en) | Multichannel head signal output apparatus and magnetic signal checkout equipment | |
| CN103338031A (en) | Special driving method of RS485 circuit in dual opto-isolator periphery application | |
| CN204255518U (en) | It is a kind of that multiple spot is high-precision adopts warm system | |
| CN213364066U (en) | Mass concrete multipoint temperature measuring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |