JP5399329B2 - Programmable display and data display program - Google Patents

Description

  The present invention relates to a programmable display and a data display program configured to handle data to be displayed in a data format suitable for an original expression format.

  The programmable display device includes a screen for displaying an image, a touch panel for touch input, an interface for communication with a controller such as a programmable logic controller (PLC), and a control unit for controlling the above-described units. ing. Such a programmable display is an operation-type display that has a function of displaying the operation status of the controller on an image displayed on the screen and receiving an operation input for giving a control instruction to the controller from the touch panel on the screen. It is a vessel. In general, since the programmable display device has a graphic display function, an operation panel, a switch, an indicator lamp, and the like can be displayed on an image prepared in advance, and serves as an operation terminal in the control system. In the control system, display of the operating status of each controller and control instructions to the controller are performed by a programmable display arranged near the controller.

  Moreover, the programmable display has memorize | stored the various data which generate | occur | produced inside and outside. As such data, data (sampling data) is generated as a result of the control operation in a controller or a programmable display. In addition, as the above data, control data (recipe data) to be given to the controller is stored in the host computer or external memory (memory card or the like), and is taken into the programmable display as necessary.

  Patent Document 1 describes that sampling data acquired from a PLC is distributed to a client computer. Patent Document 2 describes that recipe data acquired from a personal computer is transmitted to a PLC. Furthermore, Patent Document 3 describes that a programmable display reads recipe data stored in a memory card and outputs it to a PLC.

JP 2009-9498 A (published on January 15, 2009) Japanese Patent Laid-Open No. 2001-14008 (released on January 19, 2001) JP 2006-331272 A (released on December 7, 2006)

  By the way, in the programmable display, in order to confirm the sampling data collected from the PLC, the sampling data can be displayed in a table format or a graph format. Moreover, in the programmable display, in order to confirm the recipe data transmitted to the PLC, the recipe data can also be displayed in a table format.

  In the conventional programmable display including the programmable display described in Patent Documents 1 to 3 as described above, only a 16-bit or 32-bit single data format can be used for sampling data and recipe data. Not specified. For this reason, there are the following inconveniences in handling numerical values defined by sampling data and recipe data in a single 16-bit or 32-bit data format as described above.

  When even one piece of data (for example, decimal point data) that needs to be handled in 32 bits is included, all data must be handled in 32 bits even if data that can be handled in 16 bits is included. As a result, when data is read from the memory, data that can be read in 2 bytes must also be read in units of 4 bytes. Therefore, it is necessary to make settings for reading data in adjacent areas that do not need to be read. In order to avoid this, it is necessary to leave an adjacent area, and there is an inconvenience that the efficiency of data reading and memory use decreases.

  By the way, since various types of information may be obtained or set in one process, not only numerical values but also data in the form of character strings (product names, lot numbers, etc.) and bits (binary data) are managed. There is a need to. However, if the data format is limited to a single one as described above, there arises a disadvantage that data of a plurality of data formats cannot be handled at once. Further, the following inconvenience occurs when displaying data.

When a character string is handled in a 16-bit or 32-bit data format, it is necessary to replace the character string with a character code such as an ASCII code. Therefore, the character string is displayed as a character string represented by the replaced character code (ASCII code). Then “x4643” etc.). Thus, if a character string is displayed in an expression format different from that of the original character, it is difficult to understand the character string as it is, so conversion to a normal character string is necessary. In the case of handling in a 16-bit or 32-bit data format, only “0” and “1” can be displayed, so it is not clear what these bits mean.

  In this way, if the data format that can be used is single, character strings, bits, etc. cannot be properly displayed in their original meaningful representation format, and the display of sampling data and recipe data is effectively used. I can't.

  In addition, if the data format that can be used is single, when setting a character string to display recipe data in a state that includes a character string on a programmable display, characters cannot be directly input. It is necessary to input the character code. When the recipe data is displayed, the character string is displayed as a character code, so that there is the same inconvenience as when sampling data is displayed.

  The present invention has been made in view of the above problems, and an object of the present invention is to display data in different data formats in appropriate representation formats.

  A programmable display according to the present invention is a programmable display comprising storage means for storing integrated data including a plurality of element data, and data display means for reading out and displaying the integrated data stored in the storage means. In order to solve the above problem, the integrated data includes the element data having a different data format, and the data display means displays each element data in an expression format corresponding to each data format. It is characterized by that.

  In the above configuration, each element data of the integrated data is displayed in an expression format corresponding to each data format by the data display means. Thereby, each element data can be displayed in an expression format suitable for each. Therefore, meaningful element data such as ASCII codes can be handled and displayed in their respective data formats without being replaced with 16 bits or 32 bits. For example, element data represented by ASCII codes can be displayed as a character string.

  Another programmable display device according to the present invention includes storage means for storing integrated data including a plurality of element data, and data display means for reading out and displaying the integrated data stored in the storage means. In the programmable display, in order to solve the above-described problem, the integrated data includes a first data group including a plurality of element data in a single data format or a second data including a plurality of element data having different data formats. A data group and a flag for selecting either the first data group or the second data group, and when the data display means has a value indicating the first data group, When each element data of one data group is displayed in an expression format corresponding to a single data format, while the flag is a value indicating the second data group, It is characterized by displaying an expression format corresponding to respective element data of the second data groups, each data format.

  In the above configuration, when the flag is a value indicating the first data group, the data display means displays each element data of the first data group in an expression format corresponding to a single data format. At this time, for example, when the data format is 16 bits (words), 16-bit numeric element data is displayed in an expression format of an integer. On the other hand, when the flag is a value indicating the second data group, each element data of the second data group is displayed in an expression format corresponding to each data format. At this time, for example, 16-bit (word) numerical element data is displayed in an expression format of integers, and ASCII code element data is displayed in an expression format of character strings.

  Thereby, like the above-mentioned programmable display, each element data can be displayed in the expression form suitable for each. Therefore, meaningful element data such as ASCII codes can be handled and displayed in their respective data formats without being replaced with 16 bits or 32 bits. In addition, since the first data group or the second data group is selectively used, the integrated data can be configured with a data structure suitable for each, and the design changes from the conventional integrated data including only the first data group. Can be made easier.

  In any one of the programmable displays, in the integrated data including the element data of the different data formats, at least one of the data formats is a bit, and the data display means is configured such that the data format is a bit. It is preferable to display a symbol associated with the element data.

  According to this configuration, the bit data is displayed in an expression format called a symbol, and is displayed in a meaningful form (for example, “ON” or “OFF”), not simply “0” or “1”. be able to.

  In any one of the programmable displays, the integrated data including the element data in different data formats includes a plurality of blocks including a plurality of records including the element data, and includes the size of the record. Is preferred. Thus, by preparing the record size, when the integrated data includes element data of different data formats, it is not necessary to calculate the skip amount (record size) when skipping a block. Thereby, it is possible to avoid a decrease in the efficiency of data reading without reducing the skip speed.

  The data display program of the present invention is a program for causing a computer to function as the data display means of the programmable display. Thus, the programmable display device can be realized by causing a computer to read and execute the data display program.

  Since the programmable display device according to the present invention is configured as described above, each element data can be handled in each data format and displayed in an appropriate expression format. Therefore, by adopting the present invention, it is possible to efficiently perform data processing and display element data in an easy-to-understand manner.

It is a block diagram which shows the structure of the control system containing the programmable display which concerns on embodiment of this invention. It is a figure which shows the structure of the address setting file memorize | stored in the user memory in the said programmable display. It is a figure which shows the basic structure of the sampling data memorize | stored in the data memory in the said programmable display. (A) is a figure which shows the structure of the record of the said sampling data of conventional mode, (b) is a figure which shows the structure of the record of the said sampling data of mixed mode. (A) is a figure which shows the structure of the said address setting file of conventional mode, (b) is a figure which shows the structure of the said address setting file of mixed mode. It is a figure which shows the sampling image which displays the said sampling data. It is a figure which shows the historical trend graph image which displays the said sampling data as a historical trend graph. It is a figure which shows the structure of recipe data. (A) is a figure which shows the recipe list image for selecting the element of the said recipe data, (b) is a figure which shows the element list image for displaying the selected element.

  One embodiment of the present invention is described below with reference to FIGS.

[1. (Control system configuration)
As shown in FIG. 1, the control system 1 according to this embodiment includes a programmable display 2, a host computer 3, a network 4, a programmable logic controller 5 (hereinafter referred to as “PLC 5”), and a device 6. I have.

  The programmable display 2 is connected to the host computer 3 via the network 4. The network 4 is a communication network including a local area network (LAN) that can communicate with a common communication protocol (common communication protocol) and the Internet, and the Internet. .

[1-1. Host computer configuration]
The host computer 3 manages control data (recipe data) to be given to the PLC 5 and various data acquired from the programmable display 2 and functions as the center of control in the control system 1. For this reason, the host computer 3 transmits recipe data to the programmable display 2 or receives various data collected and stored in the programmable display 2 from the programmable display 2. Data provided from the programmable display 2 is sampling data or the like. These data will be described in detail later.

[1-2. Configuration of PLC]
The PLC 5 as an external device captures the state of the input source device 6 via the input unit and gives a control instruction to the output destination device 6 via the output unit. The PLC 5 performs the above operation at every predetermined scan time such as several tens of ms, for example, according to a sequence program (such as a ladder program) created by the user.

  As the input source device 6, devices such as sensors (temperature sensors, optical sensors, etc.) and switches (push button switches, limit switches, pressure switches, etc.) are used. As the output destination device 6, an actuator, a relay, a solenoid valve, a display, or the like is used. These devices 6 are arranged in required parts of various target systems such as a production line and constitute a part of the control system 1.

  The device 6 may be a specific area in the data memory 26 provided for storing data input by the user from the touch panel 23 described later. The device 6 may be a specific area in the memory in the PLC 5.

  The memory (device memory) in the PLC 5 stores data (word data or bit data) indicating the state of the device 6 (output value from the device 6 or set value to the device 6) in an area specified by the device address. doing. In the memory, a word device and a bit device are set. The word device is set as an area for storing word data such as numeric values as input / output data, and is designated by a word address (device address). The bit device is set as an area for storing bit data such as an on / off state, and is set by a bit address (device address). Thereby, by designating a device address and accessing an arbitrary word device or bit device in the memory, the device 6 can be controlled, or data relating to the state of the device 6 can be individually taken out.

[1-3. Programmable display configuration
[1-3-1. (Basic function of programmable display)
The programmable display 2 includes a CPU (Central Processing Unit) that executes instructions of an HMI control program that realizes each function, a ROM (Read 0nly Memory) that stores the HMI control program, and a RAM (Random Access Memory) that expands the HMI control program. ), A storage device (recording medium) such as a memory for storing the HMI control program and various data. The programmable display 2 is a dedicated computer that realizes an operation function and a display function peculiar to the programmable display by displaying image data for input operation and display created by the user, and is suitably used as an HMI device. The The image data is created by combining process definition information that defines various processes related to input operations and display operations. The programmable display 2 can specify an operation for displaying the state of the device 6 and an operation for controlling the state of the device 6 according to an input operation based on such image data.

  The programmable display device 2 communicates with the PLC 5 via the communication cable 7 by its communication function, and acquires the state of each device 6 stored in the memory of the PLC 5 as sampling data. The status of each device 6 is displayed. Moreover, the programmable display 2 transmits the control instruction | indication which contains recipe data, etc. to PLC5 according to the input operation to the below-mentioned touch panel 23 by the communication function. Furthermore, since the programmable display 2 is communicably connected to the host computer 3 via the network 4, data is transmitted to and received from the host computer 3 by its communication function.

  Note that the acquisition / change of the state of the device 6 may be instructed each time, or a temporary memory space is prepared in the programmable display 2, and when acquiring / changing, the memory space is accessed, Communication with the PLC 5 may be performed every predetermined time interval or every predetermined event to synchronize with the entity to which each address is assigned.

[1-3-2. Configuration of each part of the programmable display]
In order to realize the above functions, the programmable display 2 includes an HMI processing unit 21, a screen 22, a touch panel 23, interface units (I / F in the figure) 24 and 25, a data memory 26, a user, A memory 27 and a work memory 28 are provided. Hereinafter, each main part of the programmable display device 2 will be described in detail.

[1-3-2-1. (Display / input configuration)
As the screen 22, a flat panel display panel such as a liquid crystal panel, an EL panel, or a plasma display panel is preferably used in order to configure the programmable display 2 to be thin. The touch panel 23 is an input device provided for performing touch input on the display surface of the screen 22.

[1-3-2-2. Configuration of interface section]
The interface unit 24 is a communication control unit for the programmable display 2 to communicate with the host computer 3, and is connected to the network 4. The interface unit 24 is configured to be able to perform network communication based on the IP address of the host computer 3.

  On the other hand, the interface unit 25 is a communication control unit for the programmable display device 2 to communicate with the PLC 5. The interface unit 25 is configured to perform serial communication control when the PLC 5 is a model that performs serial communication, and to perform network communication when the PLC 5 is a model that performs network communication. The interface unit 25 performs communication using a communication protocol corresponding to the manufacturer and model of the PLC 5 when performing serial communication control.

[1-3-2-2-3. (Configuration of various memories)
The data memory 26 (storage means) is configured by SRAM or DRAM, and stores various data generated outside or inside the programmable display 2. Since the data memory 26 stores different types of data as described above, the data memory 26 does not necessarily need to be configured as a single memory, and may be configured as different types of memory depending on the type of data, or may be the same memory. Even if it exists, it is preferable to change a storage area according to the kind of data.

  Examples of the data include sampling data and recipe data. The sampling data is data obtained by the PLC 5 from the device 6 or data generated inside the programmable display 2 and is stored in the data memory 26 along with the generation time. The recipe data is supplied from the host computer 3 as described above, but the supply source is not limited to this. For example, the recipe data may be supplied from a memory card if the programmable display 2 has a function of reading a memory card, or may be supplied from the user memory 27 if stored in the user memory 27.

  The user memory 27 is a memory for storing an image file, the communication protocol, and the like, and FEPROM (Flash Erasable and Programmable ROM) is used. Since FEPROM is a rewritable read-only flash memory, it plays the role of a hard disk drive in a general personal computer. A flash memory does not have a movable part and is resistant to impacts, and thus operates stably even in a poor ambient environment.

  The image file is a file in which data of one or more user images (unit images composed of image data for one frame) displayed on the programmable display 2 are collected. The image file is normally prepared as a set of project files including a series of a plurality of related image data corresponding to a target system including the device 6 or a product manufactured by the target system.

  The image data is created by image creation software, and is configured such that a part image is arranged on a base image, a figure is drawn, or text is described. Parts images include switches (on / off switches, changeover switches, pushbutton switches, etc.), lamps, numeric keys, various display parts (for example, numerical display parts, meter display parts, graph display parts, alarm display parts, etc.) Provided in image creation software. In the component image, the processing content for realizing the function is set as the above-mentioned processing definition information. For example, in the switch component image, when the touch operation is performed, the processing definition information that defines the processing content of rewriting the value of the bit device specified by the desired bit address between “0” and “1” Is preset by image creation software.

  The user memory 27 also stores an address setting file. This address setting file is referred to when the HMI processing unit 21 (to be described later) instructs the PLC 5 to read sampling data or write recipe data. The address setting file is used to read and write sampling data and recipe data. Various information about data is set.

  The address setting file also includes symbol information about the display mode of bit data described later. This symbol information is information regarding various symbols assigned to give meaning to binary values (“0” and “1”) of bit data. The symbol information may be, for example, character strings and characters such as “ON” and “OFF”, “present”, and “none”, but symbols such as “◯” and “x”. Also good.

  As will be described later, the sampling data and recipe data have a structure corresponding to the conventional mode that selectively uses one of 16 bits or 32 bits and the mixed mode that uses a mixture of different data formats. Have. In the conventional mode, the data format is unified to either 16 bits or 32 bits for a plurality of data (element data) included in the sampling data and recipe data and constituting the components of the sampling data and recipe data. Therefore, an address setting file in which a device address to be accessed is set is prepared. On the other hand, in the mixed mode, different data formats are used in a mixed manner. Therefore, in the address setting file, it is necessary to associate the data format with the device address as described below.

  As shown in FIG. 2, the address setting file has a structure in which a data format, a device address (“address” in the figure), and a continuous number are associated with each other.

  In the mixed mode, as will be described later, a 16-bit word, a 32-bit word, a bit, and a character string are prepared as data formats. As the data format of the character string, for example, a character code such as ASCII (ASCII) code is used.

  The device address is prepared in a format corresponding to the aforementioned external device memory and internal device memory. The device address corresponding to the external device memory is given an identifier of [PLC] at the head when, for example, the memory of the PLC 5 is designated. On the other hand, the device address corresponding to the internal device memory is given an identifier [INTERNAL] at the head.

  The continuous number is the number of times that the same data format is accessed for consecutive device addresses. When the continuous number is 1, access is made only to a single device address. When the continuous number is 2 or more, access is made to the device addresses for the continuous number obtained by sequentially adding one by one from the set head device address. For example, as shown in FIG. 2, when the device address is set to “[PLC] D0010” and the consecutive number is set to “3” with a word of 16 bits, 1 is added to the device address. “[PLC] D0011” and “[PLC] D0012” obtained by adding 1 are set.

  The work memory 28 is composed of, for example, a DRAM, and is used for temporary storage of data exchanged with the PLC 5 in addition to being used for work during arithmetic processing such as display control.

[1-3-2-4. data structure〕
[1-3-2-2-4 (a). Sampling data structure
<Basic structure of sampling data>
FIG. 3 shows the basic structure of sampling data (integrated data). As shown in FIG. 3, the sampling data is configured such that group number, flag, number of blocks, number of records, number of data, record size, block 1, block 2,..., Block x are arranged in this order. ing.

  The group number is a number assigned to each group when sampling data from a plurality of devices 6 collected at a time is grouped.

As for the flag, 0 to 4 bits are prepared, and 1 byte is allocated.
Bit 0: Presence or absence of date data (0 is no date, “1” is date)
1st bit: Defines the data format (“0” is 16 bits, “1” is 32 bits)
2nd bit: Data valid / invalid specified (“0” is invalid, “1” is valid)
3rd bit: Presence or absence of loop operation ("0" is absent, "1" is present)
4th bit: Defines the data format mode ("0" is the conventional mode, "1" is the mixed mode)
The conventional mode is a mode for selecting a conventional data format in which one of 16 bits and 32 bits is selected as the data format. The mixed mode is a mode in which different data formats are mixed. Since the mixed mode is newly adopted, the fourth bit is added as a flag.

  The number of blocks defines the number of blocks. Two bytes are assigned to the number of blocks.

  The number of records is the number of records in each block, and 2 bytes are allocated.

  The number of data is the number of data in each record, and 2 bytes are allocated.

  The record size is newly added to the conventional sampling data, and is prepared in advance as 2 bytes in order to specify the amount of skip when skipping a block and reading data of the next block. In the conventional mode, since the data format is only 16 bits or 32 bits, the amount of skip can be easily calculated. On the other hand, in the mixed mode, since the data is variable length because different data formats are used, it is necessary to calculate the total skip amount by specifying the data format of each data in the record, and the time required for the calculation Becomes longer. For this reason, a reduction in skip speed is avoided by preparing a record size in advance so that the calculation can be omitted when skipping.

  Block 1 to block x are provided as the respective blocks. Each block is composed of a plurality of records 1 to y.

<Record data structure (conventional mode)>
FIG. 4A shows the structure of record data in the conventional mode in which mixing of data formats is invalid. As shown in FIG. 4A, the record data includes a read completion flag, error code, year, month, day, hour, minute, second, millisecond, data valid / invalid bit, data 1, data 2,. Data z (first data group) is arranged in this order.

The read completion flag is a flag indicating the reading of all data, and is “0” if the reading is not completed, and “ 1 ” if the reading is completed. One byte is assigned to this read completion flag.

  The error code is a flag indicating the presence / absence of an error in reading data, and is “0” when the reading is normally performed, and other than “0” when an error occurs in the reading. This error code is assigned 1 byte.

  In the year, month, day, hour, minute, second and millisecond for giving date information, the given range (number of digits) is expressed in BCD (Binary Coded Decimal). Year, month, day, hour, minute, and second are represented by 2 digits, and 1 byte is allocated. The millisecond is represented by 3 digits, and 2 bytes are allocated.

  The data valid / invalid bit is a bit indicating whether or not each data is valid. “1” is valid and “0” is invalid. The data valid / invalid bit has a variable length (4 to 64 bytes) in units of 4 bytes depending on the number of data (1 to 512). In the data valid / invalid bit, the data position is represented by the lower bits, and 0 is entered in the empty area.

  For data 1 to data z, 2 bytes are assigned when the data length is 16 bits, and 4 bytes are assigned when the data length is 32 bits. z, that is, the number of data is 1 to 512 (however, when the data length is 4 bytes, it is 1 to 256). The number of 2-byte data is an even number unit.

<Record data structure (mixed mode)>
FIG. 4B shows a record data structure in mixed mode in which mixing of data formats is effective. As shown in FIG. 4 (b), the record data is read completion flag, error code, year, month, date, hour, minute, second, millisecond, data valid / invalid bit, Data 1 to data z (second data group) are arranged in this order. This record data is the same as the record data in the conventional mode with respect to the read completion flag, error code, year, month, day, hour, minute, second, millisecond and data valid / invalid bit, but the data size is the same. Unlike the data size in the conventional mode, the length is variable according to the data format.

  In the record data in the mixed mode, as shown in Table 1, 16 bits (words), 32 bits (words), bits, and character strings are prepared as data formats. Bit and 16-bit data has a size of 2 bytes, and 32-bit data has a size of 4 bytes. The character string data has a size corresponding to the set device. This device indicates one specific device 6 to be sampled. The maximum number of characters in one character string is limited by the number of characters that can be displayed on a display component that displays the character string.

[1-3-2-2-4 (b). (Recipe data structure)
The recipe data (integrated data) includes a structure different from the above-described sampling data in the detailed part, but has the same structure in that the record data structure corresponds to the conventional mode and the mixed mode. Here, detailed description thereof is omitted. Therefore, the data structure of the conventional mode or the mixed mode can be selectively used for the recipe data, and data of different data formats can be mixed and used in the mixed mode.

[1-3-2-2-4 (c). Address configuration file structure
FIG. 5 shows the structure of an address setting file specialized for sampling data.

  The address setting file for the recipe data also includes a different structure from the address setting file for the sampling data described above in detail, but the same address information as the sampling address information corresponding to the conventional mode and the sampling corresponding to the mixed mode. Since it has the same structure in that it includes the same address information as the address information B, detailed description thereof is omitted here.

<Sampling address information (conventional mode)>
As shown in FIG. 5A, the address setting file corresponding to the conventional mode has sampling address information A-1 to sampling address information AN (12 bytes). In the sampling address information A-1 to sampling address information AN, addresses are set individually for the continuous sampling operation and the random sampling operation. The continuous sampling operation is an operation for accessing consecutive device addresses with respect to the same data format. In the case of this continuous sampling operation, only the head device address (head address) for starting sampling is set. The random sampling operation is an operation for accessing a device address designated at random. In the case of this random sampling operation, all specified addresses are set.

  Although not shown in FIG. 5A, in the conventional mode, only one sampling point is fixedly set for each sampling data, and the data format is also fixedly set in advance.

  Each sampling address information A consists of a combination of an index number and a sampling address. The index number is a number given to a file name created when sampling data is saved as backup data. This index number is provided in the range of 1 to 512 and has a size of 2 bytes. The sampling address is a device address for which sampling data is collected. This sampling address is included as device ID information which is binary information for specifying the device memory of the PLC 5.

<Sampling address information (mixed mode)>
As shown in FIG. 5B, the address setting file corresponding to the mixed mode has sampling address information B-1 to sampling address information B-N. In the mixed mode, since the continuous sampling operation is designated by the continuous number, it is not necessary to consider the setting of the continuous sampling operation, and all the designated addresses are set so as to correspond to the random sampling operation.

  Although not shown in FIG. 5B, in the mixed mode, unlike the conventional mode, the number of sampling points is set to a desired number for each sampling data, and the data format is also individually set.

  Each sampling address information B, like the sampling address information A, has an index number and a sampling address, but also has a data format and a continuous number. The data format is represented by 2 bits such as word 16 bits (0), word 32 bits (1), bit (2), and character string (3). The continuous number can be set in the range of 1 to 512, and is represented by 2 bytes.

[1-3-2-5. Configuration of HMI processing unit]
[1-3-2-2-5 (a). Basic functions of the HMI processing unit]
The HMI processing unit 21 acquires the state of the device 6 connected to the PLC 5 as state data from the device memory (external device memory) of the PLC 5 by communicating with the PLC 5 at predetermined time intervals or at predetermined events. . The HMI processing unit 21 writes the state data acquired in this way into a temporary memory space prepared in the programmable display 2, for example, a specific area (state memory area) in the above-described working memory 28. In addition, the HMI processing unit 21 acquires data written in a data storage area prepared in the programmable display 2, for example, a specific area (internal device memory) of the data memory 26, and displays the state of the data in the programmable display 2. On the screen.

  On the other hand, the HMI processing unit 21 communicates with the PLC 5 so as to update the data in the external device memory in response to an operation on the touch panel 23 provided on the screen 22 of the programmable display 2. Rewrite the data. Further, the HMI processing unit 21 rewrites the data in the internal device memory so as to update the data in the internal device memory in response to an operation on the touch panel 23 or the like.

  The HMI processing unit 21 obtains the state data of the device 6 from the PLC 5 and reflects the change in the state of the device 6 in response to an operation on the component image, such as recipe data. The operation at the time of instructing is specified by the process definition information defined in the component image.

  The HMI processing unit 21 as described above is a functional block realized by causing the CPU provided in the programmable display 2 to execute the above-described HMI control program that also functions as the data display program of the present invention. The program code (execution format program, intermediate code program, source program) of the above HMI control program can be recorded on a computer-readable recording medium configured to be separable from the programmable display device 2, and from the recording medium It may be installed in the programmable display 2.

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and a CD-ROM (compact disc read-only memory) / MO (magneto-optical). / MD (Mini Disc) / DVD (digital versatile disk) / Disk system including optical disc such as CD-R (CD Recordable), IC card (including memory card) / Card system such as optical card, or mask ROM / EPROM A semiconductor memory system such as (erasable programmable read-only memory) / EEPROM (electrically erasable and programmable read-only memory) / flash ROM can be used.

  Further, since the programmable display device 2 is connected to the network 4, the HMI control program may be downloaded via the network 4. The network 4 is not limited to the Internet or LAN described above, but is an intranet, extranet, ISDN (integrated services digital network), VAN (value-added network), CATV (community antenna television) communication network, virtual private network ( virtual private network), telephone line network, mobile communication network, satellite communication network, etc. can be used. The transmission medium constituting the network 4 is not particularly limited. For example, IEEE (institute of electrical and electronic engineers) 1394, USB, power line carrier, cable TV line, telephone line, ADSL (asynchronous digital subscriber loop) line Wireless such as IrDA (infrared data association) and remote control such as remote control, Bluetooth (registered trademark), 802.11 wireless, HDR (high data rate), mobile phone network, satellite line, terrestrial digital network, etc. But it is available.

  However, when the HMI control program is downloaded from the network 4 in this way, the download program may be stored in the programmable display 2 in advance or installed from another recording medium.

[1-3-2-2-5 (b). (Configuration for data display)
Here, the HMI processing unit 21 includes a sampling data display processing unit 211 and a recipe data display processing unit 212 in order to display sampling data and recipe data.

[1-3-2-2-5 (b-1). Configuration of sampling data display processing unit]
The sampling data display processing unit 211 (data display unit) displays a list of sampling data based on the sampling data stored in the data memory 26. As a display form of the sampling data, a form in which the value of the sampling data is displayed in a tabular form and a form in which the value is displayed as a trend graph are prepared.

  The sampling data display processing unit 211 displays the record data shown in FIG. 4A or 4B with reference to the flag shown in FIG. Specifically, the sampling data display processing unit 211 refers to the fourth bit of the flag, reads the record data shown in FIG. 4A when it is “0” (conventional mode), and “1” (mixed) Mode), the record data shown in FIG.

The sampling data display processing unit 211 operates as follows according to the bit of the flag.
(1) 0th bit Regardless of the mode, date data is not displayed when it is “0”, while date data is read from record data and displayed when it is “1”.
(2) 1st bit (conventional mode)
If “0”, 16-bit data is read, and if “1”, 32-bit data is read.
(3) 2nd bit Regardless of the mode, when it is “0”, it is not judged whether the sampled data value is valid, and when it is “1”, it is judged whether the sampled data value is valid. Make a decision.
(4) Third bit Regardless of the mode, the record data is read in the normal operation (non-loop operation) when it is “0”, while the record data is read in the loop operation when it is “1”.
(5) If the fourth bit is “0”, the record mode of FIG. 4A is read because it is the conventional mode, and if it is “1”, the record data of FIG. read out.

[1-3-2-5 (b-2). Configuration of recipe data display processing unit]
The recipe data display processing unit 212 (data display means) displays recipe data based on the recipe data stored in the data memory 26. The recipe data display processing unit 212 reads record data according to the setting in the basic structure portion of the recipe data.

[2. (Data display by programmable display)
Next, an operation for displaying sampling data and recipe data by the programmable display 2 configured as described above will be described.

[2-1. (Display of sampling data)
Here, an example in which sampling data acquired in the step of pressing a part is displayed will be described. In this process, since the parts are pressed by the press machine, the voltage and torque values of the press machine are monitored for each lot, and an alarm issued when the voltage value exceeds a predetermined abnormal value is monitored. For this reason, time, lot number, voltage value, torque value, and alarm (presence / absence) are displayed as sampling data. Regarding the data format, the lot number is a character string, the alarm is a bit, the torque value is 16 bits, and the voltage value is 32 bits (Float). As for the alarm bit, “0” is displayed as “OFF”, and “1” is displayed as “ON”.

  The HMI processing unit 21 captures sampling data from the PLC 5 and the programmable display device 2 with reference to the address setting file. Specifically, the HMI processing unit 21 reads a plurality of data in the data format set in the address setting file from the address (device address) set in the address setting file, and based on these data, One sampling data as shown in FIG. 3 is constructed and stored in the data memory 26.

  As shown in FIG. 6, the sampling data display processing unit 211 displays a sampling image 101 in order to display sampling data in a tabular format. The sampling image 101 is composed of sampling display components, and has a sampling display area 101a for displaying sampling data in a tabular format. Further, as shown in FIG. 7, the sampling data display processing unit 211 displays a historical trend graph image 102 in order to display sampling data in a graph format. The historical trend graph image 102 is composed of trend graph display components, and has a trend graph display area 102a for displaying sampling data in a trend graph format.

  When the sampling data is displayed in a tabular format, the data stored in the data memory 26 is read out. When the data format is the mixed mode, the sampling data display processing unit 211 reads date data and data 1 to data z from the record shown in FIG. Specifically, in the case of this process, the sampling data display processing unit 211 has, for the four data 1 to data z (z = 4), a character string representing a lot number, a numerical value representing a voltage value, and a torque value. Are read out and displayed in the sampling display area 101a of the sampling image 101. The sampling data display processing unit 211 refers to the address setting file for the bit value, and displays “OFF” or “ON” corresponding to the bit value.

  When displaying the sampling data in a graph format, the sampling data display processing unit 211 removes the data 1 to data z read as described above from the trend graph display area of the historical trend graph image 102 excluding the character string. 102a.

[2-2. (Recipe data display)
Here, an example in which the number of manufactured devices as a product is set will be described. This apparatus includes screens having different screen sizes depending on the model. In addition, this apparatus includes a model equipped with a LAN port and a model not equipped, and similarly, a model equipped with a USB port and a model not equipped.

  In this example, as shown in FIG. 8, the recipe data has an address (device address) and a recipe label (element) associated with each other. In addition, an association between an address and the following data format is set in the address setting file.

  As the recipe label, the number of manufactured items, the device screen size, the LAN port, the USB port, and the device type are prepared for each of a plurality of device series (models). Such recipe labels are stored in different areas of the data memory 26 for each series of devices.

  As for the data format, the production number is 16 bits, the screen size is 32 bits (Float), the LAN port and the USB port are bits, and the model is a character string. As for the bits of the LAN port and the USB port, “0” is expressed as “OFF” (not equipped), and “1” is expressed as “ON” (equipped).

  Further, the recipe data display processing unit 212 displays the recipe list image 103 and the element list image 104 as shown in FIGS. 9A and 9B in order to display the recipe data.

  As shown in FIG. 9A, the recipe list image 103 has a series display area 103 a for selecting a series of the programmable display device 2. On the other hand, as shown in FIG. 9B, the element list image 104 has an element display area 104a for displaying the above-described recipe label and information corresponding thereto.

  When the display line of one series is touch-operated in a state where the recipe list image 103 is displayed, the recipe data display processing unit 212 displays the data of the elements of the touched series as the sampling data display processing unit 211 described above. Similarly, the data is read from the data memory 26. The recipe data display processing unit 212 displays the read element data in the element display area 104 a of the element list image 104. In the example shown in FIG. 9B, element information when the 4200 series is selected in the recipe list image 103 is displayed.

  After confirming the recipe data, the recipe data is transferred to the PLC 5 as necessary. At this time, the HMI processing unit 21 refers to the address setting file and writes the recipe data to the PLC 5. Specifically, the HMI processing unit 21 reads a plurality of data in the data format set in the address setting file from the recipe data stored in the data memory 26, and the address of the PLC 5 set in the address setting file. Write to (device address).

[3. Summary of Embodiments]
As described above, the control system 1 includes the programmable display device 2 including the sampling data display processing unit 211 for displaying the sampling data and the recipe data display processing unit 212 for displaying the recipe data. The sampling data and the recipe data stored in 26 include a mixture of data of different data formats.

  Thereby, data of a plurality of data formats can be handled collectively. Therefore, the HMI processing unit 21 refers to the address setting file, samples a plurality of data of different data formats as sampling data, or writes a plurality of data of different data formats to the PLC 5 as recipe data. it can.

  Further, each data included in the sampling data and the recipe data can be displayed in an expression format suitable for each data. Therefore, meaningful data such as character strings and bits can be handled as they are without being replaced with 16 bits or 32 bits. Therefore, it is possible to efficiently perform data processing and display the data in an easy-to-understand manner.

  For example, in the example shown in FIG. 6, the conventional 16-bit torque value is displayed as an integer as sampling data, but in addition, a 32-bit (Float) voltage value is displayed as a real number including a decimal point. Is displayed as a character string, and the alarm is displayed as ON or OFF. On the other hand, in the example shown in FIG. 9B, as the recipe data, the conventional 16-bit production quantity is displayed as an integer, but in addition, the 32-bit (Float) screen size is displayed as a real number including a decimal point. The model is displayed as a character string, and the LAN port and USB port are displayed as ON or OFF.

  The sampling data and recipe data are configured so that the record data structure can be selected between the conventional mode and the mixed mode. Thereby, a record can be comprised with the data structure suitable for each mode, and the design change from the conventional data structure can be made easy.

  Further, as described above, the sampling data display processing unit 211 can display data in different data formats on one historical trend graph image 102. For example, in the example shown in FIG. 7, a 16-bit torque value (integer) and a 32-bit (Float) voltage value (real number including a decimal point) are displayed in a trend graph, and an alarm (ON / OFF) is a rectangular wave. Is displayed. Thereby, it can be easily confirmed whether an abnormality occurs and the alarm is ON when the voltage value is one graph.

  Furthermore, since the sampling data is configured to be selectable between the conventional mode and the mixed mode, as described above, by preparing the record size, the skip amount when the block is skipped in the mixed mode (record (Size) need not be calculated (see [1-3-2-2-4 (a). Sampling data structure]). Thereby, it is possible to avoid a decrease in the efficiency of data reading without reducing the skip speed.

  The medium for storing the sampling data and the recipe data may be not only the data memory 26 but also other memory provided inside or outside the programmable display 2, for example, a card that can be attached to and detached from the programmable display 2. It may be a storage medium such as a memory.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  In the programmable display of the present invention, data such as sampling data and recipe data includes a plurality of data in different data formats, and the data is displayed in an expression format suitable for each data format. Can be suitably used.

DESCRIPTION OF SYMBOLS 1 Control system 2 Programmable display 3 Host computer 5 Programmable logic controller 6 Device 21 HMI process part 26 Data memory (memory | storage means)
211 Sampling data display processing unit (data display means)
212 Recipe data display processing unit (data display means)

Claims (2)

In a programmable display comprising storage means for storing integrated data including a plurality of element data and data display means for reading out and displaying the integrated data stored in the storage means,
The integrated data is either a first data group consisting of a plurality of element data in a single data format or a second data group consisting of a plurality of the element data having different data formats, and either the first or second data group Including a flag for selecting one of them,
The data display means displays each element data of the first data group in an expression format corresponding to a single data format when the flag is a value indicating the first data group, A programmable display device that displays each element data of the second data group in an expression format corresponding to each data format when the value is a value indicating the second data group. The data display program for functioning a computer as the said data display means in the programmable display of Claim 1 .

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