WO2014183621A1

WO2014183621A1 - Profinet-based control panel with extended input and output

Info

Publication number: WO2014183621A1
Application number: PCT/CN2014/077270
Authority: WO
Inventors: 胡友前
Original assignee: Hu Youqian
Priority date: 2013-05-13
Filing date: 2014-05-12
Publication date: 2014-11-20
Also published as: CN103324101A; CN103324101B

Abstract

A profinet-based control panel with extended input and output (IO) comprises a power source (1) and a connection panel (4), and further comprises a communication plate (2). The communication plate (2) is provided with a first port (20), a second port (21), a third port (22), and a fourth port (23) and is further provided with a communication chip (6). The communication chip (6) is provided with a first communication port (60), a second communication port (61), and a third communication port (62), and is further provided with a driver (7). The control panel is connected to an upper computer (3). The upper computer (3) runs a PLC program, and separately scans a button (41) and an indicator light (42) in a matrix scanning manner by using the communication chip (6). The upper computer(3) performs processing according to a state result of the scanned button (41), and then determines a button (41) in a pressed state, and transfers a control signal to the connection panel (4) by using the communication chip (6), so as to light or extinguish a corresponding indicator light (42). The control panel can extend rest IO, and implement recombination of panel control and IO extension, so that the cost is greatly reduced, connection of a client is facilitated, space occupation is reduced, and the reliability is enhanced.

Description

Control panel with extended input and output based on Profinet

Technical field

The invention relates to a control panel based on an industrial network bus Profinet input and output device, in particular to a control panel based on Profinet with extended input and output. Background technique

At present, in the field of motion control, the most typical is CNC machine tools. The Profinet-based control panel has not been designed and manufactured in China. The Prof inet panel designed and manufactured abroad does not have 10 extensions, so customers need to purchase another Profinet-based input and output. Module, a set of input and output modules with 72 input and 48 outputs, the average user only needs 24 input and 16 output is enough, and most of the remaining input and output are wasteful. The designed keyboard is used to operate the movement of the machine, and a corresponding indicator light, such as a light-emitting diode, is installed to indicate whether each key is valid after being pressed for viewing by the operator. Usually, a key or an indicator light occupies a 10 point of the PLC. When a large number of keys and indicators are required, the number of output points for the keyboard and the indicator light is often larger than the number of output points for control, resulting in a substantial increase in cost.

For matrix scanning, the keyboard is scanned line by line. The method is as follows: sequentially send the line line to the high level 1 to check the status of the corresponding column; if the column line is all 0, the button is not in the line; if not all 0 , the button must be on this line, and is the key that intersects the high-level column line. Finally, determine the key value and enter the key handler. The indicator is scanned line by line. The method is: Now set the line to high level 1, and then set it to low level 0, check whether the corresponding column key is valid; if it is valid, set the indicator column to 0, then the indicator light is on, otherwise it is set to 1, no light is on.

Regarding the hardware part of the matrix design, the design of the matrix keyboard in the PLC system requires not only the input port but also the output port. Therefore, it is very important to understand the structure and working principle of the internal circuit of the PLC port 10. The following takes the DC input and output modules of the S7-200 as an example to briefly explain its working principle. As shown in Figure 1, the DC input module of the PLC, where K1-input switch, M-common, 10. 0-input point, Rl, R2 typical value is 5. 6K, 1Κ. Working principle: If the input switch K1 is closed, the input signal is converted to the level required by the CPU of the PLC after RC filtering and photoelectric isolation, usually 5V, and then connected to the bus of the CPU through the input selector, thus external input The "0N" state of the switch is input to the PLC. At this time, the input indicator lights, and the input image register corresponding to the input point is "1". If the input switch is off, the signal does not form a path, and the input indicator does not light, indicating "OFF" status. As shown in Figure 2, it is the DC output module of the PLC, where L+ is connected to DC24V; Q0. 0-output point. Working principle: If the user program sets the output to "0N" state, the CPU sends a "0N" signal to the output lock during the refresh output phase. The memory is then photoelectrically coupled to the FET to make it saturate and turn on. At this time, the output indicator light is on, and the DC24V is connected to the load through the FET, so that the load obtains the operating current. Conversely, if the user program sets the output to the "OFF" state, the output indicator does not light, as opposed to the above. As shown in FIG. 3, the scanning circuit is a circuit diagram of 8×8 keys and lamp scanning, wherein the line scanning shares 8 lines of output.

Regarding the scanning mode of the PLC, when the PLC is in the "RUN" working mode, except for the power-on initialization, other programs take a cyclic scan mode, which is called "PLC scanning mode", and its execution flow is as shown in the figure. 4: In the design of the keyboard and lights can not consider communication and self-diagnosis, there are three main phases left in one scan cycle: Input sampling phase, the CPU stores the state of all physical input points into the corresponding process In the image register, the contents of the process image register remain unchanged until the next input sample; during the program execution phase, the CPU executes the program from left to right and top to bottom, and writes the operation result to the output image register or In the data storage area; in the output refresh phase, after the program is executed, the CPU updates the state of the process output image register to the physical output point almost simultaneously. Regarding the setting of the keyboard and indicator light, the keyboard and indicator light are all designed in 8 x 8 matrix: A setting (Γ64 key corresponds to ΜΒ0 ΜΒ7 respectively, the key is pressed, the corresponding storage point is "1", loosen "0"; B setting (Γ124 indicator corresponds to ΜΒ112 ΜΒ119 respectively; C sets QB0 to the 0th line to the 7th line of the keyboard (multiplexed with the indicator), IB0 corresponds to the 0th column of the keyboard 7 columns; D sets the 0th line to the 7th line of the QB0 corresponding lamp (multiplexed with the keyboard), QB1 corresponds to the 0th column to the 7th column of the keyboard. About the program flow chart, as shown in Figure 5, the program description: n starts from 0, and when the operation value is negative, it means that the line is not scanned.

The technical problem to be solved by the present invention is to provide a control panel based on the Profinet band extended input and output with an extended 10-port, which is capable of saving the occupation of 10 by saving the above-mentioned deficiencies of the prior art.

In order to solve the above technical problem, the technical solution adopted by the present invention is: A control panel based on Profinet with extended input and output, comprising a power supply and a connection panel, characterized in that: further comprising a communication board; the communication board is provided with a connection The first port of the power source further has a second port connected to the panel, and further has a third port, and further has a fourth port for communicating with the host computer 3; and a communication chip;

The communication chip is provided with a first communication port, a second communication port and a third communication port; and a driver is further provided; the input end of the first port is connected to an output port of the power source, and the output end of the first port is connected to a DC port. The input of the transformer;

The second port input end is connected to the panel input and output port, and the output end of the second port is connected to the first communication port of the communication processing chip; The input end of the fourth port is connected to the input and output port of the upper computer, and the output end of the fourth port is connected to the third communication port of the communication processing chip;

a button and an indicator light are arranged on the connection panel;

The fourth port adopts a physical interface of RJ45; the fourth port and the host computer adopt a standard industrial Ethernet Profinet communication protocol;

The upper computer scans the button and the indicator light by matrix scanning, and the result of the scanning is transmitted to the upper computer through the communication chip; the upper computer determines the pressed state button according to the state result of the scanned button, The control signal is transmitted to the connection panel through the communication chip, so that the corresponding indicator light is turned on or off.

As a further improvement of the technical solution of the present invention, the buttons are arranged in a matrix, forming a matrix type button; the indicator lights are also arranged in a matrix, forming a matrix type indicator light; each row of buttons in the matrix type button respectively passes An output row line is connected in parallel, and the output row line is connected to the panel input/output port; each column button in the matrix type button is connected in parallel through the input column line, and the input column line is connected to the panel input/output port; Each row of indicator lights is also connected in parallel by an output row line. Each column indicator in the matrix indicator light is connected in parallel through the output column lines, and the output column line is connected to the panel input and output ports; the upper computer first outputs the line rows. From the nth line, the loop is gradually set to the high level, and the output column lines are all set to the high level. Then, the input of the input column line is checked column by column. If the input column line is also high, the high level is The button at the intersection of the output row line and the high-level input column line is in a pressed state, and the upper computer sets the corresponding output column line to a low battery , The respective indicator lights.

As a further improved technical solution of the present invention, the expansion port and the driver are further included; the third port input end is connected to the input port of the expansion port, the output end of the third port is connected to the output end of the driver, and the input end of the drive is connected to the communication. Processing the second communication port of the chip.

As a further improved technical solution of the present invention, the fourth port includes two RJ45s.

As a further improvement of the technical solution of the present invention, the communication processing chip selects an Erte _C 200 chip. The invention is based on Prof inet communication technology, adopts PLC scanning mode to control the keys and indicator lights of the panel, effectively reduces the occupation of input and output points, and thus can expand the remaining 10 to realize the combination of panel control and expansion 10, It saves costs, facilitates customer connections, reduces space usage, and increases reliability. DRAWINGS

1 is a circuit diagram of a PLC DC input module in the prior art.

2 is a circuit diagram of a PLC DC output module in the prior art.

Fig. 3 is a circuit diagram of a prior art 8 X 8 key and lamp scanning. Figure 4 is a flow chart of the working mode of the PLC matrix scan.

Figure 5 Program execution flow chart of PLC matrix scan.

Figure 6 is a schematic view of the structure of the present invention.

FIG. 7 is a schematic structural view of a communication board of the present invention.

8 is a schematic structural view of a connection panel of the present invention

FIG. 9 is a schematic diagram of the connection of the buttons, the indicator lights and the panel input and output ports of the present invention.

Figure 10 is a general block diagram of the present invention when using Ertec200

Figure 11 is a schematic diagram of an extended input circuit using the 54AC138.

Figure 12 is a circuit diagram of the XC-INPUTO corresponding to the first channel (Γ15 input port in Figure 11).

Figure 13 is a schematic diagram of an extended output circuit using the 54AC138.

Figure 14 is a schematic diagram of the circuit of the T15 bit output corresponding to the second channel of XCS-0UT1 in Figure 13.

Figure 15 is a schematic diagram of the voltage divider circuit of the extended input terminal.

Figure 16 is a schematic diagram of the amplifier circuit of the extended output terminal.

Figure 17 is a schematic diagram of a scanning circuit of the first embodiment.

Figure 18 is a schematic diagram showing the control flow of the first embodiment.

The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. detailed description

Example 1

Referring to FIG. 6, FIG. 7 and FIG. 8, the control panel based on the Prof inet with extended input and output includes a power supply 1, a connection panel 4, and a host computer 3, and is characterized in that: a communication board 2 is further included; There is a first port 20 connected to the power supply, a second port 21 connected to the panel 4, a third port 22, and a fourth port 23 communicating with the host computer 3; 6; the communication chip 6 is provided with a first communication port 60, a second communication port 61 and a third communication port 62; a driver 7 is further provided; the input end of the first port 20 is connected to the output port of the power source 1 The output end of the first port 20 is connected to the input end of the DC transformer 24; the input end of the second port 21 is connected to the panel input/output port 43, and the output end of the second port 21 is connected to the first communication port 60 of the communication processing chip 6. The input end of the fourth port 23 is connected to the input and output port of the upper computer 3, and the output end of the fourth port 23 is connected to the third communication port 62 of the communication processing chip 6. The connecting panel 4 is provided with a button 41. And the indicator light 42; the fourth port 23 is adopted Physical the RJ45 interface; the fourth port 23 with the host computer 3 using the industry standard ethernet protocol Prof inet; 3 respectively the host computer 41 and the indicator button 42 a matrix scan mode scan, scanning The result is transmitted to the host computer 3 through the communication chip 6; the host computer 3 processes the button 41 according to the state result of the scanned button 41, and determines the button 41 in the pressed state, and transmits the control signal to the connection panel 4 through the communication chip 6. The corresponding indicator light 42 is turned on or off.

As a preferred solution, referring to FIG. 9, the buttons 41 are arranged in a matrix to form a matrix type button; the indicator lights 42 are also arranged in a matrix, forming a matrix type indicator light; each row of buttons in the matrix type button is respectively Parallel through an output row line 44, the output row line 44 is connected to the panel input and output port 43; each column button in the matrix type button is connected in parallel through the input column line 46, and the input column line 46 is connected to the panel input/output port 43; Each row of indicator lights in the matrix indicator light is also connected in parallel by an output row line 44. Each column indicator in the matrix indicator light is connected in parallel through the output column line 45, and the output column line 45 and the panel input and output are connected. The port 43 is connected; the host computer 3 first steps the output row line 44 from the nth line to the high level, and simultaneously sets the output column line 44 to the high level, and then checks the input of the input column line 46 column by column, if The input column line 46 is also at a high level, and the button 41 at the intersection of the high-level output row line 44 and the high-level input column line 46 is in a pressed state. The host computer 3 sets the corresponding output column line 45 to a low level, so that the corresponding indicator 42 lights up.

The expansion port 5 and the driver 7 are further included; the input port of the third port 22 is connected to the input and output port of the expansion port 5, the output end of the third port 22 is connected to the output end of the driver 7, and the input end of the driver 7 is connected to the communication processing chip. The second communication port 61 of 6. The fourth port 23 includes two RJ45s. As a preferred solution, as shown in FIG. 10, the communication processing chip 6 selects an Ertec 200 chip, and the Erte _C 200 is a dedicated chip for processing prof inet, and sends the input status to the primary station through the message in each bus cycle. The output instruction of the read master station is written to the corresponding output point.

Two sets of 54AC138 are used to expand the input and output channels respectively, occupying only three address lines AB9 1, and distinguishing between read input and write output by control signals, as shown in Fig. 1 and Fig. 12, XRD-PER, XCS-PER1 To read the input, XCS-INPUT0 corresponds to the first channel (T15 input port; as shown in Figure 13 and Figure 14 XWD-PER, XCS-PER2 is the write output, XCS-0UT1 corresponds to the second channel (Γ15-bit output. System Up to 8 inputs and outputs can be read and written, each of which is 16 bits. The input is read out from the data bus via the bus receiver 74HCT245. The output is written by the bus through the flip-flop 74VHCT574, and finally amplified to 3. 3V by the amplifier circuit.

In Figure 10, the X111 pin layout is shown in Table 1. The key value table is shown in Table 2. The LED lamp value table is shown in Table 3. The X222 pin definition is shown in Table 4.

Table 1: X111 Pin Layout Table

5 Input 0. 2 I 6 Input 0. 3 I

7 Input 0. 4 I 8 Input 0. 5 I

9 Input 0. 6 I 10 Input 0. 7 I

11 Input 1. 0 I 12 Input 1. 1 I

13 Input 1. 2 I 14 Input 1. 3 I

15 Input 1. 4 I 16 Input 1. 5 I

17 Input 1. 6 I 18 Input 1. 7 I

19 Input 2. 0 I 20 Input 2. 1 I

21 Input 2. 2 I 22 Input 2. 3 I

23 Input 2. 4 I 24 Input 2. 5 I

25 Input 2. 6 I 26 Input 2. 7 I

27 Unoccupied 28 Unoccupied

29 Unoccupied 30 Unoccupied

31 Output 0. 0 0 32 Output 0. 1 0

33 Output 0. 2 0 34 Output 0. 3 0

35 Output 0. 4 0 36 Output 0. 5 0

37 Output 0. 6 0 38 Output 0. 7 0

39 Output 1. 0 0 40 Output 1. 1 0

41 Output 1. 2 0 42 Output 1. 3 0

43 Output 1. 4 0 44 Output 1. 5 0

45 Output 1. 6 0 46 Output 1. 7 0

47 D0C0M1 VI 48 D0C0M1 VI

49 D0C0M1 VI 50 D0C0M1 VI

VI: Voltage input / V0 : Voltage output

I: Signal input / V0 : Signal output / GND : Reference potential (ground) Table 2 : Key value table

The second column REP0S KT2 Y

Third column REF KT3 Z

Fourth column TEACH IN KT4 4th AXIS

Fifth column INC VAR KT5 5th AXIS

Column 6 INC 1 KT6 6th AXIS

Column 7 MDA KT7 7th AXIS

Eighth column INC 10 KT8 8th AXIS

Column 9 INC 100 KT9 9th AXIS

Tenth column AUTO KT10 10th AXIS

Eleventh column INC 1000 KT11 11th AXIS

Twelfth column INC 10000 KT12 WCS/MCS

Thirteenth column RESET KT13 Direction -

SINGLE

Fourteenth column KT14 RAP ID

BLOCK

Direction

Fifteenth column CYCLE STOP KT15

+

CYCKE

Sixteenth column SPINDLE STOP FEED STOP

START

SPINDLE

Seventeenth column FEED START

START

Eighteenth column Table 3: LED lamp value table

First row, second row, third row, first column LED - J0G LED - KTl LED - X Second column LED - REPOS LED - KT2 LED - Y Third column LED - REF LED - KT3 LED - Z Fourth column LED - TEACH IN LED—KT4 LED — 4th AXIS Fifth Column LED — INC VAR LED—KT5 LED — 5th AXIS The sixth column of LEDs - INC 1 LED - KT6 LED - 6th AXIS The seventh column of LEDs - MDA LED - KT7 LED - 7th AXIS The eighth column of LEDs - INC 10 LED - KT8 LED - 8th AXIS ninth column LED - INC 100 LED - KT9 LED - 9th AXIS 10th LED - AUTO LED - KT10 LED - 10th AXIS 11th LED - INC 1000 LED - KTll LED - 11th AXIS 12th LED - INC 10000 LED - KT12 LED - WCS / MCS Thirteen columns of LEDs - RESET LED - KT13 LED - Direction -

LED — SINGLE

Fourteenth column LED-KT14 LED - RAP ID

BLOCK

LED — CYCLE LED — Direction Column 15 LED—KT15

STOP +

LED — CYCKE

Sixteenth column LED — SPINDLE STOP LED — FEED STOP

START

Column 17 LED - SPINDLE START LED - FEED START Table 18 Table 4: X222 Pin Definition

19 first column key I 20 reserved GND

21 Second column key I 21 Reserved GND

23 Third column key I 24 Reserved GND

25 Fourth column key I 26 Reserved GND

27 Fifth column key I 28 Reserved GND

29 sixth column key I 30 reserved GND

31 seventh column key I 32 reserved GND

33 eighth column key I 34 reserved GND

35 First row of lights 0 36 Unoccupied

37 Second row of lights 0 38 Unoccupied

39 Third row of lights 0 40 Unoccupied

41 Fourth row of lights 0 42 Unoccupied

43 fifth column light 0 44 ninth column key I

45 sixth column light 0 46 tenth column key I

47 seventh column light 0 48 eleventh column key I

49 eighth column light 0 50 twelfth column key I

51 ninth column light 0 52 thirteenth column key I

53 Tenth column light 0 54 Fourteenth column key I

55 eleventh column light 0 56 fifteenth column key I

57 twelfth column lamp 0 58 column sixteen button I

59 thirteenth column light 0 60 unoccupied

Note: Reserved input and output can be used to expand the panel keys; P LED

The control panel based on Profinet with extended input and output controls the panel with input and output, and reduces the occupation of input and output by panel control through matrix mode. Due to the persistence of human vision and the afterglow effect of LED, the blinking of the LED within 20ms is undetectable by the human eye, while the scanning period of the PLC is 6ms, the period of the three-line scanning is 18ms, less than 20ms. Therefore, the 3 X 18 scanning circuit is used in actual production, as shown in Fig. 17, in Fig. 17, the key and the LED share three lines of output for scanning. The actual PLC program is changed to 3 X 18, and the control flow is shown in Figure 18. At run time, n starts at 0, and when the computed value is negative, it means that the line is not scanned.

The driver 7 is an output amplifying circuit, as shown in FIG. 15 and FIG. 16, since the common-purpose voltage for the extended input and output terminals is 24 V DC, and the input and output voltage for panel control is DC 3. 3 V, so Remaining 24 inputs The 16 output is used for expansion, which requires voltage division on the input and drive amplification of the output.

The buttons and the indicator lights of the embodiment are in one-to-one correspondence, forming a combined matrix arrangement, that is, a composite matrix keyboard and an indicator light. This embodiment is based on Profinet communication technology, adopts PLC scanning mode to control the keys and indicator lights of the panel, effectively reduces the occupation of input and output points, and thus can expand the remaining 10 to realize the combination of panel control and expansion 10, It saves costs, facilitates customer connections, reduces space usage, and increases reliability. Specifically, the present embodiment is based on the input and output of profinet, and controls the connection panel by using the input and output, and reduces the occupation of the input and output by the connection panel control by the matrix mode, thereby leaving the 24 input 16 output for expansion.

Claims

WO 2014/183621 Quanhe 1 J Request for Proposal PCT/CN2014/077270

1. A control panel based on Prof inet with extended input and output, comprising a power supply (1) and a connection panel (4), characterized in that: further comprising a communication board (2); wherein the communication board (2) is provided Connect the first port of the power supply (20),

There is also a second port (21) of the connection panel (4), and a third port (22), which is also provided for use with the host computer (3)

The fourth port of communication (23); also has a communication chip (6);

The communication chip (6) is provided with a first communication port (60), a second communication port (61) and a third communication port (62);

There is also a drive (7);

The input end of the first port (20) is connected to the output port of the power source (1), and the output end of the first port (20) is connected.

Connect the input of the DC transformer (24);

The second port (21) input is connected to the panel input/output port (43), and the output of the second port (21)

Connecting the first communication port (60) of the communication processing chip (6);

The input end of the fourth port (23) is connected to the input and output port of the upper computer (3), and the input of the fourth port 23

The third communication port (62) of the communication processing chip (6) is connected to the output terminal;

The connecting panel (4) is provided with a button (41) and an indicator light (42);

The fourth port (23) adopts a physical interface of RJ45; the fourth port (23) and the upper computer (3) adopt a standard

Quasi-industrial Ethernet Prof inet communication protocol;

The upper computer (3) scans the button (41) and the indicator light (42) by matrix scanning.

The result of the scan is transmitted to the host computer via the communication chip (6) (3); the host computer (3) is based on the scanned button (41)

After the status result is processed, the button (41) in the pressed state is judged, and the control signal is passed through the communication chip (6).

Transfer to the connection panel (4) to turn the corresponding indicator (42) on or off.

2. The control panel based on the Prof inet band extended input and output according to claim 1, wherein:

The buttons (41) are arranged in a matrix to form a matrix button; the indicator lights (42) are also arranged in a matrix,

a matrix indicator light; each row of buttons in the matrix button is connected in parallel through an output row line (44), respectively

The output line (44) is connected to the panel input/output port (43); each column button in the matrix button is input through

The column lines (46) are connected in parallel, and the input column line (46) is connected to the panel input/output port (43); the matrix indicator light

Each row of indicators within is also connected in parallel by an output row line (44), each column within the matrix indicator

The lamps are connected in parallel through the output column line (45), and the output column line (45) is connected to the panel input/output port (43);

(3) First, the output row line (44) is gradually turned from the nth line to the high level, and the output column line (44) is fully

Set the high level, then check the input of the input column line (46) column by column, if the input column line (46) is also high,

Then, the button (41) at the intersection of the high-level output line (44) and the high-level input column line (46) is in a pressed state, and the upper computer (3) will have a corresponding output column line (45). ) Set low to illuminate the corresponding indicator (42). 3. The control panel based on the Prof inet band extended input and output according to claim 2, further comprising: an expansion port (5) and a driver (7); and the third port (22) input connection extension The input port of port (5), the output of the third port (22) is connected to the output of the driver (7), and the input of the driver (7) is connected to the second communication port (61) of the communication processing chip (6).

4. The control panel based on the Prof inet band extended input and output according to claim 3, wherein the fourth port (23) comprises two RJ45s.

The control panel based on the Prof inet band extension input/output according to claim 1 or 2 or 3 or 4, wherein: the communication processing chip (6) selects an Ertec 200 chip.