TWI612405B - Control device and control system - Google Patents

Abstract

The present invention provides a control device, which is provided with a memory unit for memorizing the source project data of the information referenced when the control program and the control program are executed, and the binary project data compiled from the source project data; The memory is loaded with binary data when executing the control program; the binary rewriting department stores the binary data stored in the memory and the binary input in the memory according to the received data. The project information is rewritten; and the source rewriting department rewrites the source project data memorized in the memory department based on the received information.

Description

Control device and control system

The present invention relates to a control device and a control system for controlling industrial machinery.

Control devices are used to control industrial machinery. The control device is exemplified by a programmable controller (JIS B 3502: 2011, programmable controllers (PLC)), a C language controller (controller), a motion controller, or an inverter (in accordance with the National Education of the Republic of China). The Institute's "Bilingual Vocabulary, Academic Nouns and Dictionary Information Network" is called an inverter, also known as an inverter or a frequency converter.

The data contained in the control program executed by the control device and the information referred to when the control program is executed is referred to as project data. The information to be referred to when executing the control program is exemplified by a parameter for controlling the numerical value used in the calculation, a device memory or a control device indicating a work area in a memory of a predetermined control device. Connection information of the connection status of industrial machinery.

The project information is created by executing an engineering tool program on a personal computer. The source (source, also known as the source code) is compiled into a binary and transmitted to the control device.

Related Art, Patent Document 1 describes that a source code of an application is created on a programming device, and is compiled to generate a connection information table and downloaded to an inverter. Technology (Abstract of Invention).

The information that is referenced when executing the control program may not be determined when the engineering tool is used. For example, the ratio (P) gain, integral (I) time, or derivative (D) time used in the proportional integral derivative (PID) control algorithm is determined by operating the industrial machine in an operating state. The above-mentioned parameters describe the tentative initial value when the source of the project data is created.

As described above, since the information referred to when the control program is executed is determined by the industrial machine operation, the initial value of the source of the project data described in the personal computer is different from the determined value of the rewriting in the control device. Therefore, when the source of the project data is edited using the engineering tool program, since the source of the project data in the personal computer is the initial value, the decision value after the rewriting in the control device is lost.

Patent Document 2 describes a PLC support device 20 including an adjustment means 205 (paragraphs 0026 to 0030), a tuning operation for performing parameter adjustment of the fine adjustment PLC1, and a backup means 206 (paragraphs 0033 to 0037). The backup data amount buffered in the memory space 203 is backed up.

[Advanced technical literature]

[Patent Literature]

[Patent Document 1] International Publication No. 2006/112324

[Patent Document 2] JP-A-2004-178157

The technique of Patent Document 2 describes the backup of the amount of control data, but does not describe the backup of the parameters. Further, in the technique of Patent Document 2, when the parameters are adjusted when the PLC 1 is operated and when the parameters of the PLC 1 are adjusted by the device different from the PLC support device 20, the parameters in the PLC 1 and the parameters in the PLC support device 20 are not the same. That is, the parameters after being rewritten in PLC1 are lost.

The present invention has been made in view of the above problems, and an object thereof is to provide a control device capable of suppressing loss of data after rewriting.

The present invention is provided with a source program material for memorizing the information contained in the control program and the control program, and a binary project data compiled from the source project data. The invention has a memory that is loaded with binary project data when executing the control program, and a binary rewriting unit that stores the data of the binary data stored in the memory unit according to the received data, and is loaded in The memory of the second-entry project data is rewritten; and the source rewriting department rewrites the source project data memorized in the memory department.

The control device of the present invention is capable of achieving the effect of suppressing the loss of rewritten data.

1‧‧‧Control system

2‧‧‧Control program making device

3‧‧‧Programmable display

4‧‧‧Upper control device

5, 5A‧‧‧ control device

5a‧‧‧Main substrate

5a1‧‧‧CPU

5a1a‧‧‧Two-digit rewriting department

5a1b‧‧‧Source Rewriting Department

5a1b1‧‧‧Assessment necessity judgment department

5a1b2‧‧‧Buffer writing section

5a1b3‧‧‧Source Writer

5a2‧‧‧ memory

5a2a, 5a7a1, 24b1‧‧‧ binary control program

5a2b, 5a7a2, 24b2‧‧‧ binary control parameters

5a2c, 5a7a3, 24b3‧‧‧ binary device memory

5a2d‧‧‧buffer

5a3‧‧‧Timer

5a4‧‧‧External memory slot

5a5‧‧‧Communication interface

5a6‧‧‧ bus interface

5a7‧‧‧Internal Memory

5a7a, 24b‧‧‧ binary data

5b, 5c‧‧‧subsubstrate

6, 7‧‧‧ Machinery

8‧‧‧External Memory Department

8a, 24a‧‧‧ source project information

8a1, 24a1‧‧‧ source control program

8a2, 24a2‧‧‧ source control parameters

8a3, 24a3‧‧‧ source device memory

8a4, 24a4‧‧‧ List of Necessity Necessities

9‧‧‧System Power Supply

10‧‧‧UPS (without interruption of power supply)

21‧‧‧CPU (Central Processing Unit)

21a‧‧‧Engineering Tools Department

21a1‧‧‧Source Project Information Editorial Department

21a2‧‧‧Compilation Department

22‧‧‧RAM (random access memory)

23‧‧‧ROM (read only memory)

24‧‧‧Memory Department

24a1a, 24a1b‧‧‧ functional blocks

25‧‧‧ Input Department

26‧‧‧Display Department

27‧‧‧Communication interface

31‧‧‧ parameter setting screen

31a to 31u‧‧‧ input field

B1‧‧‧Internal busbar

B2‧‧‧Expansion bus

N‧‧‧Network

Fig. 1 is a view showing the configuration of a control system using the control device of the first embodiment.

Fig. 2 is a view showing the configuration of hardware of the control program creation device of the first embodiment.

Fig. 3 is a block diagram showing the function of the control program creation device of the first embodiment.

Fig. 4 is a view showing an example of a source control program of the first embodiment.

Fig. 5 is a view showing an example of source control parameters of the first embodiment.

Fig. 6 is a view showing an example of the source device memory of the first embodiment.

Fig. 7 is a view showing an example of the list of equivalence necessity of the first embodiment.

Fig. 8 is a view showing an example of a parameter setting screen of the first embodiment.

Fig. 9 is a view showing the hardware configuration of the control device of the first embodiment.

Fig. 10 is a functional block diagram showing the control device of the first embodiment.

Fig. 11 is a flow chart showing the binary rewriting process of the first embodiment.

Fig. 12 is a flow chart showing the source write processing of the control device of the first embodiment.

Fig. 13 is a flow chart showing the source rewriting process of the first embodiment.

Figure 14 is a view showing a control program creation device of the first embodiment Flow chart of data editing process.

Fig. 15 is a block diagram showing the function of the control device of the second embodiment.

Fig. 16 is a flow chart showing the source rewriting process of the control device of the second embodiment.

Hereinafter, the control device and the control system of the present invention will be described in detail based on the drawings. Further, the present invention is not limited to the embodiment.

Embodiment 1

Fig. 1 is a view showing the configuration of a control system using the control device of the first embodiment. The control system 1 includes a control program creation device 2, a programmable display (JIS B 3551:2012, programmable display) 3, a higher-level control device 4, a control device 5, a machine 6, and a machine 7.

The control program creation device 2, the programmable display device 3, the upper control device 4, and the control device 5 are connected via a network N. The network N is exemplified by a LAN (Local Area Network) or an Internet (internet).

The control device 5 controls the machines 6 and 7. The control device 5 is exemplified by a programmable controller, a C language controller, a motion controller, or an inverter.

The control program creation device 2 is configured to include project data that is controlled by the control device 5 and information that is referred to when the control program is executed. The information to be referred to when executing the control program is exemplified by a parameter belonging to a numerical value used in the control calculation, and a memory indicating a prescribed control device. Connection information of the connection state of the device memory or control device and the industrial machine in the work area inside.

The programmable display 3 monitors the data in the control device 5 and changes the information referred to when the control program in the control device 5 is executed.

The upper control device 4 is integrated with a whole manufacturing line or a computer of the entire factory, and controls the control device 5.

Fig. 2 is a view showing the configuration of the hardware of the control program creation device of the first embodiment. The control program creation device 2 of the first embodiment is a computer. The control program creation device 2 includes a CPU (Central Processing Unit) 21, a RAM (Random Access Memory) 22, a ROM (Read Only Memory) 23, and a storage unit 24. The input unit 25, the display unit 26, and a communication interface (interface) 27.

The CPU 21 executes a program stored in the ROM 23 and the storage unit 24 in a state where the RAM 22 is used as a work area. The program stored in the ROM 23 is exemplified by a BIOS (Basic Input/Output System) or a UEFI (Unified Extensible Firmware Interface). The program stored in the memory unit 24 is exemplified by an operating system program and an engineering tool program. The memory unit 24 is exemplified by SSD (Solid State Drive, according to the "National Education Institute of the Republic of China", "Bilingual Vocabulary, Academic Nouns and Dictionary Information Network" is called a solid state drive machine, also known as a solid state disk) or HDD ( Hard Disk Drive; hard disk drive).

The input unit 25 accepts an operation input from an operator. lose The entry 25 is exemplified by a keyboard or a mouse. The display unit 26 displays characters and images. The display unit 26 is exemplified by a liquid crystal display device. The communication interface 27 communicates with the control device 5 via the network N.

Fig. 3 is a functional block diagram showing a control program creation device of the first embodiment. The CPU 21 executes an engineering tool program stored in the storage unit 24. Thereby, the engineering tool part 21a can be realized, which comprises: the source project material editing unit 21a1, which creates or edits the source project material 24a according to the operation input of the user; and the compiling section 21a2 which is the source project material 24a is compiled to create a binary project data 24b.

The source project data 24a includes a source control program 24a1, a source control parameter 24a2, a source device memory 24a3, and a homogeneity necessity list 24a4.

Also, the source project data 24a may also contain other materials. Other information is exemplified by connection information indicating the connection of the control device 5 and the machine 6, and the connection of the control device 5 and the machine 7.

Fig. 4 is a view showing an example of a source control program of the first embodiment. In the first embodiment, the source control program 24a1 is described in a function block diagram language (IEC 61131-3, JIS B 3503).

Further, the language described in the source control program 24a1 is not limited to the functional block diagram language. Other languages in which the source control program 24a1 is described are exemplified by a ladder language, a sequential function language, a structured text language, or an instruction list language (IEC 61131-3, IIS B 3503).

The source control program 24a1 includes functional blocks 24a1a and 24a1b. The function block 24a1a is prepared in advance for the proportional integral derivative (PID) control block of the engineering tool program, and performs proportional (P), integral (I), and differential (D) control on the input X1 to output the output Y1.

The function block 24a1b is a control block made by the user, and Y2=A ̇X2+B ̇X3+C is calculated for the inputs X2 and X3, and the output Y2 is output.

Fig. 5 is a view showing an example of source control parameters of the first embodiment. The source control parameter 24a2 is an item including an item of a control parameter name and an initial value.

The multi-row row 24a2a of the source control parameter 24a2 is a parameter referred to in the control calculation of the functional block 24a1a, and the complex column 24a2b is a parameter referred to in the control calculation of the functional block 24a1b.

The plural column 24a2a is set with the initial value "reverse action" in the parameter name "reverse action ‧ positive action", the initial value "1.0" is set in the parameter name "control cycle", and the initial value is set in the parameter name "proportional gain". 1.2", the initial value "12.3" is set in the parameter name "integration time", the initial value "3.2" is set in the parameter name "differential time", and the initial value "100.0" is set in the parameter name "SV upper limit value". The initial value "0.0" is set in the parameter name "SV lower limit value".

The plural column 24a2b has an initial value "0.9" set in the parameter name "A", an initial value "1.1" in the parameter name "B", and an initial value "100" in the parameter name "C".

Fig. 6 is a view showing an example of the source device memory of the first embodiment. The source device memory 24a3 is an item including a device name and an item of an initial value.

The source device memory 24a3 has an initial value "200" set in the device name "D000" and an initial value "300" in the device name "D001".

Fig. 7 is a view showing an example of the list of necessity for equivalence in the first embodiment. The homomorphization necessity list 24a4 is an item including an item of a control parameter name or a device name, and an instant flag.

The homogeneity necessity list 24a4 describes that in the control device 5, when the binary control parameter or the data of the binary device memory is rewritten, in the control device 5, the source control parameter or the source device memory should also be rewritten. Control parameters or devices.

In the control system 1, when the binary control parameter or the data of the binary device memory is rewritten in the control device 5, the source control parameter or the source device memory is also rewritten in the control device 5. Valued."

The plural column 24a4a of the equivalence necessity list 24a4 describes parameters that are equalized in the parameters referred to in the control calculation of the functional block 24a1a.

The plural column 24a4a describes the parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time". Therefore, in the control device 5, the parameter name "proportional gain" in the binary control parameter, the parameter name "integration time" or the parameter name "differential time" After the data is rewritten, in the control device 5, the data of the parameter name "proportional gain", the parameter name "integration time", or the parameter name "differential time" in the source control parameter are equalized.

Further, in the parameter to be referred to during the control calculation of the functional block 24a1a, the parameter name "reverse action ‧ positive action", parameter name "control cycle", parameter name "SV upper limit value", and parameter name "SV lower limit value" It is not described in the Necessity List 24a4.

Therefore, in the control device 5, even the parameter name "reverse action ‧ positive action", parameter name "control cycle", parameter name "SV upper limit value", or parameter name "SV lower limit value" in the binary control parameter The data is rewritten. In the control device 5, the parameter name "reverse action ‧ positive action", parameter name "control cycle", parameter name "SV upper limit value" or parameter name "SV lower limit value" in the source control parameter The information is not equalized.

Among the control parameters, the movements of the machines 6 and 7 are gradually filled in with data as in the case of gain, and finally the control parameters of the data are determined. It is preferable that the data of such control parameters are homogenized and the source control parameters are also rewritten. On the other hand, among the control parameters, the counter temporarily changes the data for the operation check of the machines 6 and 7. It is preferable that the data of such control parameters are not homogenized.

The control system 1 is provided with a list of necessity necessity lists 24a4, whereby it is possible to rewrite only the source control parameters to rewrite the control parameters.

The item of the instant flag of the equivalence necessity list 24a4 describes a flag indicating that the control device 5 is a binary control When the parameter or the data of the binary device memory is rewritten, whether the source control parameter or the source device memory data is immediately equalized in the control device 5.

When the instant flag is "1", after the binary control parameter or the data of the binary device memory is rewritten in the control device 5, the source control parameter or the data of the source device memory in the control device 5 is immediately the same value. Chemical.

When the instant flag is "0", after the binary control parameter or the data of the binary device memory is rewritten in the control device 5, the data that is rewritten in the control device 5 is temporarily buffered when the predetermined condition is satisfied. At the time, the source control parameter or the source device memory data in the control device 5 is equalized.

The plural column 24a4a is set with the instant flag "1" in the parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time". Therefore, after the data of the parameter name "proportional gain", the parameter name "integration time", or the parameter name "differential time" in the binary control parameter in the control device 5 is rewritten, in the source control parameter in the control device 5 The data of the parameter name "Proportional Gain", the parameter name "Integration Time", or the parameter name "Derivative Time" is immediately equalized.

Among the control parameters, such as the gain system, there is a possibility to minimize the loss of the rewritten data. Such control parameters are preferably performed immediately with the same value, and the data of the source control parameters are immediately rewritten. On the other hand, among the control parameters, the dispersion of the load of the control device 5 should be prioritized in consideration of the possibility of losing the rewritten data. Control parameter The data is preferably homogenized on a discretionary basis.

The control system 1 is provided with a homogeneity necessity list 24a4 of an item including an instant flag, whereby the control parameter of the source control parameter to minimize the possibility of losing the rewritten data can be immediately rewritten. Thereby, the control device 5 can reduce the possibility of losing the rewritten data and can achieve the dispersion of the load.

The complex column 24a4b of the equivalence necessity list 24a4 describes parameters that are equalized within the parameters that are referred to during the control calculation of the functional block 24a1b.

The plural column 24a4b describes the parameter name "A" and the parameter name "B". Therefore, after the data of the parameter name "A" or the parameter name "B" in the binary control parameter is rewritten in the control device 5, the parameter name "A" or the parameter name "B" in the source control parameter is controlled in the control device 5. The data is homogenized.

The plural column 24a4b is set with the instant flag "0" for the parameter name "A" and the parameter name "B". Therefore, after the data of the parameter name "A" or the parameter name "B" in the binary control parameter is rewritten in the control device 5, the data rewritten in the control device 5 is temporarily stored, and when the predetermined condition is satisfied, In the control device 5, the data of the parameter name "A" or the parameter name "B" in the source control parameter is equalized.

Further, among the parameters referred to in the control calculation of the functional block 24a1b, the parameter name "C" is not described in the equivalence necessity list 24a4. Therefore, even if the data of the parameter name "C" among the binary control parameters in the control device 5 is rewritten, the source is in the control device 5 The data of the parameter name "C" among the control parameters is also not equalized.

The column name 24a4c describes the device name "D000". Therefore, after the data of the device name "D000" in the memory of the binary device in the control device 5 is rewritten, the data of the device name "D000" in the memory of the source device in the control device 5 is equalized.

Column 24a4c is set with the instant flag "0" in the device name "D000". Therefore, in the control device 5, after the data of the device name "D000" in the memory of the binary device is rewritten, the data rewritten in the control device 5 is temporarily stored, and when the predetermined condition is satisfied, the source is in the control device 5. The data of the device name "D000" in the device memory is equalized.

Further, in the device memory, the device name "D001" is not described in the equivalence necessity list 24a4. Therefore, even if the data of the device name "D001" in the memory of the binary device in the control device 5 is rewritten, the data of the device name "D001" in the memory of the source device in the control device 5 is not equalized.

Fig. 8 is a view showing an example of a parameter setting screen of the first embodiment. The parameter setting screen 31 is displayed on the display unit 26 by the source project material editing unit 21a1.

The input field 31a is a field in which the initial value of the parameter name "reverse action ‧ positive action" is to be input. The input field 31b is a field in which the initial value of the parameter name "control period" is to be input. The input field 31c is a field in which the initial value of the parameter name "proportional gain" is to be input. The input field 31d is a field in which the initial value of the parameter name "integration time" is to be input.

The input field 31e is a field in which the initial value of the parameter name "differential time" is to be input. The input field 31f is a field in which the initial value of the parameter name "SV upper limit value" is to be input. The input field 31g is a field in which the initial value of the parameter name "SV lower limit value" is to be input.

The input field 31h is a field for inputting the necessity of the parameterization of the parameter name "reverse action ‧ positive action". The input field 31i is a field for inputting the necessity of the parameterization of the parameter name "control cycle". The input field 31j is a field for inputting the necessity of the parameterization of the parameter name "proportional gain". The input field 31k is a field for inputting the necessity of the same value of the parameter name "integration time".

The input field 31l is a field for inputting the necessity of the parameterization of the parameter name "differential time". The input field 31m is a field for inputting the necessity of the same value of the parameter name "SV upper limit value". The input field 31n is a field for inputting the necessity of the same value of the parameter name "SV lower limit value".

In the source project data editing unit 21a1, only the control parameters to which the check is input are described in the equivalence necessity list 24a4 from the input field 31h to the input field 31n.

The function block 24a1a is prepared in advance for the control block of the engineering tool program. Further, the parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time" are control parameters that are highly necessary for determining the same value in advance. Therefore, the source project material editing unit 21a1 checks the default values (default) among the input fields 31j, 31k, and 31l.

Thereby, the source project data editing department 21a1 can have the same value The parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time", which are more necessary for the merging, are set to a preset value and presented to the user.

The input field 31o is a field for inputting the necessity of immediate equivalence of the parameter name "reverse action ‧ positive action". The input field 31p is a field for inputting the necessity of immediate equivalence of the parameter name "control period". The input field 31q is a field for inputting the necessity of immediate equivalence of the parameter name "proportional gain".

The input field 31r is a field for inputting the necessity of immediate equivalence of the parameter name "integration time". The input field 31s is a field for inputting the necessity of immediate equivalence of the parameter name "differential time". The input field 31t is a field for inputting the necessity of immediate equivalence of the parameter name "SV upper limit value". The input field 31u is a field for inputting the necessity of immediate equivalence of the parameter name "SV lower limit value".

The source project data editing unit 21a1 inputs only the control parameters of the check from the input field 31o to the input field 31u, and writes "1" to the item of the instant flag of the equalization necessity list 24a4.

The function block 24a1a is prepared in advance for the control block of the engineering tool program. Further, the parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time" are control parameters that determine in advance the possibility of losing the value of the rewriting as much as possible. Therefore, the source project material editing unit 21a1 checks the input fields 31q, 31r, and 31s with preset values.

In this way, the source project information editing department 21a1 will try to The parameter name "proportional gain", the parameter name "integration time", and the parameter name "differential time" which reduce the possibility of losing the rewriting value are immediately set to a preset value and are presented to the user.

Referring to Fig. 3, the compiling unit 21a2 compiles the source control program 24a1 to create the binary control program 24b1, compiles the source control parameter 24a2 to create the binary control parameter 24b2, and compiles the source device memory 24a3. The binary device memory 24b3.

The binary control program 24b1, the binary control parameter 24b2, and the binary device memory 24b3 constitute the binary project data 24b. The source project data 24a and the binary project data 24b are transmitted to the control device 5 via the communication interface 27.

Fig. 9 is a view showing the hardware configuration of the control device of the first embodiment. The control device 5 includes a main substrate 5a and sub substrates 5b and 5c.

The main substrate 5a includes a CPU 5a1, a RAM 5a2 for RAM, a timer 5a3 for counting time, an external memory slot 5a4, a communication interface 5a5, a bus interface 5a6, and an internal memory portion 5a7. The CPU 5a1, the memory 5a2, the timer 5a3, the external memory slot 5a4, the communication interface 5a5, the bus bar interface 5a6, and the internal memory portion 5a7 are connected via the internal bus bar B1.

The main substrate 5a operates by receiving power supply from a UPS (Uninterruptible Power Supply) 10. The UPS 10 stores the power supplied from the system power supply 9 and supplies the stored power to Main substrate 5a.

The external memory slot 5a4 is inserted into the external memory unit 8. The external memory unit 8 is exemplified by an SD card (registered trademark).

The communication interface 5a5 communicates with the control program creation device 2, the programmable display 3, and the higher-level control device 4 via the network N.

The bus interface 5a6 is a bus bridge circuit that connects the internal bus bar B1 and the expansion bus bar B2. The sub-substrates 5b and 5c are connected to the main substrate 5a via the expansion bus bar B2. The sub-substrate 5b is connected to the machine 6. The sub-substrate 5c is connected to the machine 7.

The internal memory unit 5a7 is exemplified by an SSD or an HDD. The internal memory unit 5a7 and the external memory unit 8 constitute a memory unit.

Fig. 10 is a functional block diagram showing the control device of the first embodiment. The internal memory unit 5a7 memorizes the binary program material 5a7a received from the control program creation unit 2. The binary project data 5a7a includes a binary control program 5a7a1, a binary control parameter 5a7a2, and a binary device memory 5a7a3.

The external storage unit 8 stores the source project material 8a received from the control program creation device 2. The source project data 8a includes a source control program 8a1, a source control parameter 8a2, a source device memory 8a3, and a homogeneity necessity list 8a4.

Further, the source project material 8a can also be memorized in the internal memory portion 5a7. Since the reading speed and the writing speed of the internal memory portion 5a7 are faster than the reading speed and the writing speed of the external memory portion 8, the source project data 8a is stored in the internal memory portion 5a7. It is better.

However, in reality, depending on the cost or the suppression of the mounting area, the memory capacity of the internal memory unit 5a7 is small, and the internal memory unit 5a7 does not have the vacant capacity of the memory source project data 8a. The situation. The first embodiment describes the case where the external storage unit 8 stores the source project material 8a.

When the control device 5 performs the control operation, the binary control program 5a7a1, the binary control parameter 5a7a2, and the binary device memory 5a7a3 are loaded in the memory 5a2, and the binary control program 5a2a and the binary control parameter 5a2b are formed. And the binary device memory 5a2c.

The CPU 5a1 executes a binary rewriting program and a source rewriting program that are memorized in the internal storage unit 5a7. Thereby, it is possible to rewrite the binary control parameters 5a7a2 and 5a2b, or the binary rewriting unit 5a1a of the binary device memories 5a7a3 and 5a2c, and to rewrite the binary control parameters 5a7a2 and 5a2b, or two according to the received data. After the carry device memories 5a7a3 and 5a2c, the source control parameter 8a2 or the source rewriting portion 5a1b of the source device memory 8a3 is rewritten based on the received data.

Further, the binary rewriting program and the source rewriting program are also loaded into the memory 5a2, but the illustration thereof is omitted.

Further, the buffer 5a2d is provided in the memory 5a2. The buffer 5a2d is an area for temporarily storing the rewritten data, wherein the rewritten data is: a control parameter belonging to the control parameter among the binary control parameters 5a2b and 5a7a2 and the instant flag is set to "0", or The data that has been rewritten when the device belonging to the binary device memory 5a2c and 5a7a3 and the instant flag is set to "0" has been rewritten.

The size of the buffer 5a2d is set so as not to interfere with other programs and data.

Fig. 11 is a flow chart showing the binary rewriting process of the first embodiment. The binary rewriting unit 5a1a executes the processing shown in Fig. 11 after receiving the control parameter or the rewriting instruction of the device from the programmable display 3 and rewriting the data.

Further, although the control device 5 is configured to receive a control parameter or a rewrite instruction of the device from the programmable display 3 and to rewrite the data, the present invention is not limited thereto. The control device 5 can also receive control parameters or rewrite instructions and rewrite data from the control program creation device 2, the upper control device 4, or the control program creation device different from the control program creation device 2.

The binary rewriting unit 5a1a writes the control parameters or device data received from the programmable display 3 into the binary control parameters 5a2b and 5a7a2, or the binary device memories 5a2c and 5a7a3 in step S100.

Thereby, the control device 5 can immediately react the data received from the programmable display 3 to the control action.

Fig. 12 is a flow chart showing the source write processing of the control device of the first embodiment. The source rewriting unit 5a1b executes the processing shown in Fig. 11 after the binary rewriting unit 5a1a, that is, after rewriting the binary control parameters 5a2b and 5a7a2, or the binary device memories 5a2c and 5a7a3, executing the Fig. 12 Processing.

The equivalence necessity determining unit 5a1b1 is in step S110. Referring to the equivalence necessity list 8a4, it is determined whether the control parameter or device received from the programmable display 3 is described in the equivalence necessity list 8a4, that is, whether the control parameter or device received from the programmable display 3 is determined. A control parameter or device that is to be homogenized.

When the parameterization necessity determination unit 5a1b1 determines in step S110 that the control parameter or device received from the programmable display 3 is a control parameter or device that is not to be equalized (No, No), the process ends.

On the other hand, in step S110, the equivalence necessity determination unit 5a1b1 determines that the control parameter or device received from the programmable display 3 is a control parameter or device to be equalized (Yes, Yes), and causes the process to enter. Step S112.

In step S112, the buffer writing unit 5a1b2 refers to the homogeneity necessity list 8a4, and determines whether the control parameter received from the programmable display 3 or the device is set to "1" in the homogeneity necessity list 8a4. That is, it is determined whether the control parameter or device received from the programmable display 3 is a control parameter or device to be immediately homogenized.

The buffer writing unit 5a1b2 determines in step S112 that the control parameter or device received from the programmable display 3 is a control parameter or device to be immediately equalized (Yes, YES), and the process proceeds to step S114.

In step S114, the source writing unit 5a1b3 writes the control parameter or device data received from the programmable display 3 into the source control parameter 8a2 or the source device memory 8a3, and ends the processing.

Thereby, the control device 5 can immediately write the data of the control parameter or the device to be immediately equalized to the source control parameter 8a2 or Source device memory 8a3. Thereby, the control device 5 can reduce the possibility of losing the rewritten data.

On the other hand, in step S112, the buffer writing unit 5a1b2 determines that the control parameter or device received from the programmable display 3 is a control parameter or device that is not immediately equalized (No), and the process proceeds to step S116.

The buffer writing unit 5a1b2 determines in step S116 whether or not the control parameter or device received from the programmable display 3 is already present in the buffer 5a2d.

The buffer writing unit 5a1b2 determines in step S116 that the control parameter or device received from the programmable display 3 is already present in the buffer 5a2d (Yes, YES), and the processing proceeds to step S118.

The buffer writing unit 5a1b2 overwrites the data of the control parameter or device received from the programmable display 3 into the buffer 5a2d in step S118, and ends the processing.

Thereby, the control device 5 can reduce the number of times the data is written into the internal memory portion 5a7. It takes time to write the data to the internal memory unit 5a7, and also causes the load on the CPU 51. Therefore, the control device 5 can reduce the processing load of the CPU 51 by reducing the number of times the data is written into the internal memory portion 5a7.

Further, when the internal memory unit 5a7 is an SSD, the number of times data is written to the SSD has an upper limit. That is, the SSD has a lifetime of data write times. Therefore, the control device 5 can use the internal memory portion 5a7 for a long period of time by reducing the number of times the data is written into the internal memory portion 5a7.

On the other hand, in step S116, the buffer write unit 5a1b2 determines that the control parameter or device received from the programmable display 3 does not exist in the buffer 5a2d (No), and the process proceeds to step S120.

In step S120, the buffer writing unit 5a1b2 writes the control parameter or device data received from the programmable display 3 into the buffer 5a2d, and ends the processing.

Thereby, the control device 5 can temporarily store the following control parameters or information of the device: it is considered that the control parameter or device of the control device 5 should be preferentially prioritized compared to the possibility of losing the rewritten data. data. It takes time to write data to the internal memory unit 5a7, and the load of the CPU 5a1 is formed. Therefore, the control device 5 can achieve dispersion of the load.

Fig. 13 is a flow chart showing the source change processing of the first embodiment. When the source writing unit 5a1b3 does not satisfy the predetermined condition (No, No) is in the standby state and the predetermined condition is satisfied (Yes, YES), the source writing unit 5a1b3 advances the processing to step S142.

The predetermined conditions are exemplified by the following plural conditions. The first example is a case where the usage rate of the CPU 5a1 is equal to or lower than a predetermined critical value. In this case, since the source writing unit 5a1b3 has the processing power for the CPU 5a1, the processing of step S142 is executed.

In the second example, the vacant capacity of the buffer 5a2d is equal to or lower than a predetermined critical value. In this case, the source writing unit 5a1b3 performs the processing of step S142 because there is a possibility that the subsequent control parameters or the data of the device cannot be temporarily stored.

The third example is a case where the control program creation device 2, the programmable display device 3, or the higher-level control device 4 receive an instruction to execute the gist of the step S142. In this case, the source writing unit 5a1b3 executes the processing of step S142 in accordance with an instruction from the control program creating unit 2, the programmable display unit 3, or the higher-level control unit 4. By operating the control program creation device 2 or the programmable display 3, the user can perform the processing of step S142 in the source writing unit 5a1b3 in accordance with the desired timing.

The case where the higher-level control device 4 transmits an instruction to execute the control of the step S142 to the control device 5 is exemplified by the start of the manufacturing line, the hour of the entire line, or the final time of the manufacturing line.

The fourth example is a case where the timer 5a3 is a predetermined time. In this case, the source writing unit 5a1b3 performs the processing of step S142 after a predetermined time elapses after the actuation control device 5 has elapsed. Further, when the timer 5a3 is repeatedly calculated for a predetermined time, the source writing unit 5a1b3 executes the processing of step S142 every predetermined time.

The fifth example is a case where the control device 5 receives an abnormality notification of the system power supply 9 from the UPS 10. The abnormal situation of the system power supply 9 is exemplified by a power outage, an instantaneous power outage, or a voltage change. In this case, the source writing unit 5a1b3 performs the processing of step S142 in order to reduce the possibility of losing the data in the buffer 5a2d.

The sixth example is a case where the CPU 5a1 detects an abnormality of the control device 5 by the execution of its own diagnosis processing. In this case, the source writing unit 5a1b3 performs the processing of step S142 in order to reduce the possibility of losing the data in the buffer 5a2d.

The source writing unit 5a1b3 writes the contents of the buffer 5a2d to the source control parameter 8a2 or the source device memory 8a3 in step S142, and ends the processing.

Thereby, the control device 5 can react the changed control parameter or the device data to the source control parameter 8a2 or the source device memory 8a3. Thereby, the control device 5 can suppress the loss of the rewritten data in the binary control parameters 5a2b and 5a7a2, or the binary device memory 5a2c or 5a7a3.

Fig. 14 is a flow chart showing the process of editing the project material of the control program creation device of the first embodiment.

The source project material editing unit 21a1 receives the source project material 8a from the control device 5 and overwrites the source project material 24a of the memory unit 24 in step S150.

Next, the source project material editing unit 21a1 accepts an operation input from the user in step S152, and edits the source project material 24a.

Next, the compiling unit 21a2 compiles the source project data 24a in step S154, and creates and overwrites the binary project data 24b.

Next, in step S156, the compiling unit 21a2 transmits the source project data 24a and the binary project data 24b to the control device 5, and ends the process.

As described above, the control program creating device 2 can provide the source project data 24a after the data is rewritten in the control device 5. edit. Thereby, the control device 5 can suppress the loss of the material that is rewritten in the control device 5.

Further, even when the control device 5 has rewritten the data in accordance with an instruction from the programmable display 3, the control program creation device 2 can edit the source project material 24a after the data has been rewritten. Thereby, even when the device for transmitting the command for rewriting the data is different from the device for editing the source project data 24a, the control device 5 can suppress the situation in which the data rewritten in the control device 5 is lost.

Further, the control device 5 writes only the data of the control parameter or device described in the homogeneity necessity list 24a4 to the source control parameter 8a2 or the source device memory 8a3. Thereby, the control device 5 can rewrite only the source control parameter 8a2 or the source device memory 8a3 to rewrite the control parameters or devices.

Further, the control device 5 can immediately rewrite the source control parameter 8a2 or the source device memory 8a3, and set the control parameter or device of "1" to the item of the instant flag of the equalization necessity list 24a4. Thereby, the control device 5 suppresses the possibility of losing the rewritten data, and can also achieve the dispersion of the load.

Further, the control device 5 can temporarily store the source control parameter 8a2 or the source device memory 8a3, and the parameter of the instant flag of the homogeneity necessity list 24a4 is set with the control parameter of "0" or the device data. Further, the control device 5 can write the temporarily stored control parameter or device data to the source control parameter 8a2 or the source device memory 8a3 after the predetermined condition is satisfied. Thereby, the control device 5 can reduce the writing of data into the internal memory The number of 5a7. It takes time to write the data into the internal memory portion 5a7, and the load of the CPU 51 is formed. Therefore, the control device 5 can reduce the processing load of the CPU 51 by reducing the number of times the data is written into the internal memory portion 5a7.

Embodiment 2

Fig. 15 is a block diagram showing the function of the control device of the second embodiment. As described in the first embodiment, the reading speed and the writing speed of the internal storage unit 5a7 are faster than the reading speed and writing speed of the external storage unit 8. Therefore, when the internal memory unit 5a7 has the vacant capacity of the memory source project material 8a, the internal memory unit 5a7 is preferably the memory source project material 8a.

Therefore, in the control device 5A of the second embodiment, the internal storage unit 5a7 memorizes the source project material 8a.

The reading speed and writing speed of the internal storage unit 5a7 are faster than the reading speed and writing speed of the external storage unit 8. Further, the processing load of the CPU 5a1 that reads and writes to the internal memory unit 5a7 is lighter than the processing load of the CPU 5a1 that reads and writes to the external memory unit 8.

Therefore, in the second embodiment, the data of the control parameter or the device required for the homogenization is not temporarily stored, and the source control parameter 8a2 or the source device memory 8a3 is immediately written.

Therefore, the control device 5A of the second embodiment does not require the buffer writing unit 5a1b2 and the buffer 5a2d of the control device 5 of the first embodiment. In addition, the equivalence necessity list 8a4 is an item that does not require an instant flag.

Fig. 16 is a flow chart showing the source rewriting process of the control device of the second embodiment. The source rewriting unit 5a1b executes the processing shown in FIG. 10 after the binary rewriting unit 5a1a, that is, after rewriting the binary control parameters 5a2b and 5a7a2, or the binary device memories 5a2c and 5a7a3, executing the Fig. 16 Processing.

The equivalence necessity determination unit 5a1b1 determines whether or not the control parameter or device received from the programmable display 3 is described in the equivalence necessity list 8a4, that is, the determination, in step S160, with reference to the equivalence necessity list 8a4. Whether the control parameter or device received from the programmable display 3 is a control parameter or device to be homogenized.

The equivalence necessity determination unit 5a1b1 terminates the process after determining that the control parameter or device received from the programmable display 3 is a control parameter or device that is not to be equalized (No, No) in step S160.

On the other hand, the equivalence necessity determination unit 5a1b1 determines in step S160 that the control parameter or device received from the programmable display 3 is a control parameter or device to be equalized (Yes, Yes), and the process proceeds. Step S162.

The source writing unit 5a1b3 writes the control parameter or device data received from the programmable display 3 into the source control parameter 8a2 or the source device memory 8a3 in step S162, and ends the processing.

As explained above, the control device 5A can immediately write the received control parameters or the data of the device to the source control parameter 8a2 or the source device memory 8a3. Thereby, the control device 5A can suppress the situation in which the data rewritten in the control device 5A is lost.

The configuration shown in the above embodiments is an example of the present invention, and may be combined with another well-known technique, and a part of the configuration may be omitted or changed without departing from the gist of the invention.

5‧‧‧Control device

5a1‧‧‧CPU

5a1a‧‧‧Two-digit rewriting department

5a1b‧‧‧Source Rewriting Department

5a1b1‧‧‧Assessment necessity judgment department

5a1b2‧‧‧Buffer writing section

5a1b3‧‧‧Source Writer

5a2‧‧‧ memory

5a2a‧‧‧ binary control program

5a2b‧‧‧ binary control parameters

5a2c‧‧‧ binary device memory

5a2d‧‧‧buffer

8‧‧‧External Memory Department

8a‧‧‧Source project data

8a1‧‧‧Source Control Program

8a2‧‧‧ source control parameters

8a3‧‧‧Source device memory

8a4‧‧‧ List of Necessity Needs

5a7‧‧‧Internal Memory

5a7a‧‧‧ binary data

5a7a1‧‧‧ binary control program

5a7a2‧‧‧ binary control parameters

5a7a3‧‧‧ binary device memory

Claims (4)

A control device is provided with: a memory unit that memorizes the source project data of the information referenced when the control program and the control program are executed, and the binary project data compiled from the source project data; the memory is executed in the foregoing When the program is controlled, the binary data is loaded; the binary rewriting unit stores the binary data stored in the memory unit and the binary input in the memory according to the received data. The project data is rewritten; and the source rewriting department rewrites the source material data stored in the memory unit according to the received data; the memory unit further memorizes the necessity list of homogeneity, and the necessity of the equivalence The list describes the information referred to in the execution of the aforementioned control program within the source material data, and the information referred to when the aforementioned control program is rewritten when the binary data is rewritten. The source rewriting department is only rewritten before the execution of the aforementioned equivalence necessity list. When the control program referenced information. The control device according to claim 1, wherein the foregoing list of equivalence necessity includes an item of an instant flag, and the item of the instant flag indicates whether the source is immediately rewritten after the binary data is rewritten. Project data, the aforementioned source rewriting department immediately rewritten in the aforementioned instant flag The information referred to by the immediate rewriter in the execution of the aforementioned control program is described. The control device according to claim 2, wherein the memory system includes a buffer, and the source rewriting unit describes the information that is referred to when the item of the instant flag is not immediately rewritten by the control program. The buffer is written into the buffer, and thereafter, after the predetermined condition is satisfied, the data in the buffer is written into the source material. A control system comprising: a control device according to any one of items 1 to 3 of the patent application scope; and a control program creation device, comprising: a source project data editing unit, which is to receive the aforementioned from the control device The source project data is edited; and the compilation department compiles the source project data to create the binary data and transmits the data to the control device.