WO2015173863A1

WO2015173863A1 - Programmable controller, programmable controller system, engineering tool, and display

Info

Publication number: WO2015173863A1
Application number: PCT/JP2014/062610
Authority: WO
Inventors: 吉徳津野
Original assignee: 三菱電機株式会社
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2015-11-19
Also published as: CN105408825B; KR101635343B1; KR20160014118A; CN105408825A; JPWO2015173863A1; JP5823083B1

Abstract

　A programmable controller (20) is provided with a label information analysis unit (25), a program execution unit (24), and a label information holding unit (22). A display (10) is provided with a display unit (17), a label information holding unit (12), a diagram display processor (16), and a label information analysis unit (14). When the label information analysis unit (25) determines that a label value is present within a range, the program execution unit (24) executes a processing program that corresponds to the determination result. When the label information analysis unit (14) determines that a label value is present within a range, the diagram display processor (16) acquires, from label information, a message corresponding to a case in which the label value is present within the range, and displays the message on the display unit (17).

Description

Programmable controller, programmable controller system, engineering tool and display

The present invention relates to a programmable controller, a programmable controller system, an engineering tool, and a display.

There has been proposed a plant control system that can execute processing not only in a controller but also in an intelligent field device by setting tag information describing configuration information, attribute information, and function information in the controller and intelligent field device (for example, , See Patent Document 1). In this plant control system, for example, when processing is executed based on tag information, it is described that an upper limit alarm display request is issued to the operation monitoring station when the tag execution unit of the controller detects an upper limit alarm. Yes.

By the way, the programmable controller is constructed such that units such as a power supply unit, a CPU (Central Processing Unit) unit, a network unit, and an input / output unit are mounted on the base unit to realize predetermined processing. A program executed by the programmable controller is described using a label instead of an address. The label is generated from information unique to each unit, and is associated with the address of the memory in the programmable controller.

When a range is set for a label and the label value is within that range, normal operation is executed, and when the label value exceeds the range (threshold), an abnormal operation is executed. There are cases where you want to. In such a case, conventionally, the user has created a branch program using the range (threshold value).

JP 2004-227460 A

However, in the plant control system described in Patent Document 1, when an upper limit alarm display request is issued to the operation monitoring station, the controller detects that a certain value is in the upper limit alarm, and based on this, an upper limit alarm display request is sent to the operation monitoring station. Was out. In other words, the controller determines whether it is within the range of the upper limit alarm, and if it is within the range of the upper limit alarm, it must execute a process of issuing an upper limit alarm display request to the operation monitoring station. There was a problem of being overloaded.

In Patent Document 1, tag information must be set for each controller or intelligent field device. Therefore, there is a problem that it takes time to set the tag information.

The present invention has been made in view of the above, and for the label generated from the unique information of each unit constituting the programmable controller, the display process based on the label information in which the range that the label can take is set according to the process. An object of the present invention is to obtain a programmable controller, a programmable controller system, and a display that can be performed by a display instead of a programmable controller. It is another object of the present invention to obtain an engineering tool that can change label setting information for each programmable controller.

In order to achieve the above object, a programmable controller system according to the present invention is a programmable controller system in which a programmable controller and a display are connected by a communication line, and the programmable controller is assigned to a memory of the programmable controller. A program execution unit for executing a program created using a label attached to an address range, and a range defining the program to be executed for a label value stored in an address range specified by the label And a label information holding unit that holds label information in which the message is associated, and the label value is stored in an address range defined by the label, the label information is used by using the range of the label information. If the value is in the range A first label information analysis unit that divides the processing depending on whether it is out of range, and when the display unit acquires the label value from the display unit and the programmable controller, the display unit is based on the label information. When the label value is acquired from the programmable controller and the diagram display processing unit for displaying the state of the label, the label value is within the range and outside the range by using the range of the label information. A second label information analysis unit that divides the processing depending on the case, and when the program execution unit determines that the label value is within the range by the first label information analysis unit, the determination result And the diagram display processing unit determines that the label value is within the range by the second label information analysis unit. If, it retrieves the message corresponding to the case where the label value is in the range from the label information, and displaying on the display unit.

According to the present invention, when the label value is acquired, the branch determination process is performed based on the label information in each of the programmable controller and the display device, so that it is not necessary for the user to create a branch determination process in the programmable controller. At the same time, with respect to the label generated from the unique information of each unit constituting the programmable controller, display processing based on label information in which a range that the label can take is set according to the processing is performed by the display instead of the programmable controller. Has the effect of being able to.

FIG. 1 is a block diagram schematically showing an example of the configuration of the display according to the first embodiment. FIG. 2 is a diagram illustrating an example of label information. FIG. 3 is a diagram illustrating an example of a diagram format. FIG. 4 is a diagram illustrating an example of the diagram display information. FIG. 5 is a flowchart illustrating an example of a procedure of display processing on the display according to the first embodiment. FIG. 6 is a block diagram schematically showing the configuration of the programmable controller system according to the second embodiment. FIG. 7 is a diagram schematically illustrating functions in a program in the label information analysis unit. FIG. 8 is a flowchart illustrating an example of a branch processing procedure in the programmable controller according to the second embodiment. FIG. 9 is a block diagram schematically showing the configuration of the programmable controller according to the third embodiment. FIG. 10 is a block diagram schematically showing the configuration of the engineering tool according to the fourth embodiment. FIG. 11 is a flowchart illustrating an example of a procedure of a program generation process according to the fourth embodiment. FIG. 12 is a diagram showing an outline of processing for generating a program part by the engineering tool according to the fourth embodiment.

Hereinafter, a programmable controller, a programmable controller system, an engineering tool, and a display according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to these embodiments.

Embodiment 1 FIG.
FIG. 1 is a block diagram schematically showing an example of the configuration of the display according to the first embodiment. The display 10 includes a communication unit 11, a label information holding unit 12, a label value storage unit 13, a label information analysis unit 14, a diagram format storage unit 15, a diagram display processing unit 16, a display unit 17, Is provided.

The communication unit 11 is connected to an external device such as a programmable controller or an engineering tool via a communication line. Here, the label information is acquired from the programmable controller, and the value stored in the address range in the memory indicated by the label defined by the programmable controller (hereinafter referred to as the label value) is acquired during the arithmetic processing of the programmable controller. To do. Note that the programmable controller has a configuration in which units such as a power supply unit, a CPU unit, a network unit, and an input / output unit are mounted on the base unit. In the following embodiments, the programmable controller is a controller capable of sequence control that repeatedly executes a user program in a predetermined cycle, and is a controller that can be operated by a ladder program or a program created in C language. It is not limited to the program language.

The label information holding unit 12 holds label information set in the programmable controller connected to the display device 10. The label information is obtained by associating a label generated from information unique to each unit constituting the programmable controller with an address range in the memory of the programmable controller. That is, the label is a variable indicating the label value stored at the corresponding address, and is used in the ladder program. The label information includes setting information for displaying the label value on the display unit 17. The setting information includes a predetermined setting range provided for the label and at least one of a display process when the value corresponding to the label is within the setting range and a display process when the value is outside the setting range. . A plurality of setting ranges may be provided.

FIG. 2 is a diagram showing an example of label information. The label information includes a label, a data type, a threshold value, a message, and an address. The label is set in a certain address range of the programmable controller memory. The address indicates an address in the memory to which the label is assigned. The data type indicates the data type of the label. For example, it indicates whether the data is a word device or a bit device.

The threshold value is a boundary value for indicating whether or not the value obtained from the programmable controller is within the normal operating range, for example. That is, the threshold value defines a range. Here, a range for giving an alarm to the programmable controller and a range for stopping the programmable controller are defined. And in order to define each range, the item of an upper limit and a lower limit is provided. However, in the case of only the lower limit value, no value is input to the upper limit value, and in the case of only the upper limit value, no value is input to the lower limit value.

The message is a message displayed on the display unit 17 when the range indicated by the threshold is exceeded. Here, an alarm message and a stop message are provided in correspondence with a range for giving an alarm provided by a threshold and a range for stopping. The alarm message is a message displayed on the display unit 17 when the label value is within a range for giving an alarm to the programmable controller. The stop message is a message displayed on the display unit 17 when the label value falls within the stop range. In the example of FIG. 2, two ranges (alarm range and stop range) are set, but only one range may be set, or three or more ranges may be set. .

Also, the label information includes the unit, the number of significant digits, and the number of digits after the decimal point. The unit is a character string of a unit displayed when the value defined by the label is displayed on the display unit 17. The effective number of digits specifies the number of digits when displaying the value defined by the label on the display unit 17. The number of digits after the decimal point is used to specify the number of digits after the decimal point when the value defined by the label is displayed on the display unit 17.

The label value storage unit 13 temporarily stores the label value received from the programmable controller via the communication unit 11.

The label information analysis unit 14 performs processing according to the label value stored in the label value storage unit 13 based on the label information stored in the label information storage unit 12. For example, the label value stored in the label value storage unit 13 is compared with the threshold value of the label information corresponding to the label value. Then, according to the range where the label value exists, a message corresponding to the range is acquired and passed to the diagram display processing unit 16.

The figure format storage unit 15 stores a figure format which is a format of a display image to be displayed on the display unit 17. FIG. 3 is a diagram illustrating an example of a diagram format. Here, the diagram format 100 includes a graph display unit 110, scale display units 121a to 123b, a legend display unit 130, and a message display unit 140.

The graph display unit 110 is an area for displaying a graph generated by plotting the label values stored in the label value storage unit 13. The scale display units 121a to 123b are provided near the upper and lower limits of the vertical axis of the graph display unit 110. Multiple (three in this example) scales can be set. Here, an upper limit value and a lower limit value of a threshold value (stop threshold value) are used as the scale. For example, the

scale display units

121a and 121b are scales for the first unit label, the

scale display units

122a and 122b are scales for the second unit label, and the

scale display units

123a and 123b are the third unit labels. The scale for the label. Further, the upper limit value of the alarm range of each unit label is input to the

scale display units

121a, 122a, 123a, and the lower limit value of the alarm range of each unit label is input to the

scale display units

121b, 122b, 123b. Is done.

Note that the value input to the scale display units 121a to 123b is an example of the threshold value of the label information, and is not limited to this. For example, a value obtained by adding a predetermined value to the upper threshold value of the label information may be used as the upper limit value of the scale, and a value obtained by subtracting a predetermined value from the lower threshold value of the label information may be used as the lower limit value of the scale. The predetermined value to be added or subtracted may be a fixed value, or may be a predetermined ratio amount (for example, 10%) of the difference between the upper limit threshold and the lower limit threshold.

The legend display unit 130 displays a legend about the graph displayed on the graph display unit 110. For example, labels (first unit labels) corresponding to the

scale display units

121a and 121b are input as legends to the legend display unit 131, and labels (first unit labels) corresponding to the

scale display units

122a and 122b are input to the legend display unit 132. (Second unit label) is input as a legend, and a label (third unit label) corresponding to the

scale display units

123a and 123b is input to the legend display unit 133 as a legend. The message display unit 140 is an area for displaying a message in the label information when the message display condition is satisfied. Specifically, when the label value is included in the range indicated by the threshold and a message is set for the range, the message is displayed on the message display unit 140.

The figure display processing unit 16 inputs the label value, information obtained from the label information, etc. into the figure format 100 in the figure format storage unit 15 to form figure display information and displays it on the display unit 17. For example, the upper limit value and the lower limit value of the alarm corresponding to the label displayed on the graph display unit 110 are acquired and input to the corresponding positions on the scale display units 121a to 123b. The label value stored in the label value storage unit 13 is plotted on the graph display unit 110. Furthermore, when each label is graphed, the line connecting each point is changed for each type of label, and this is displayed on the legend display unit 130 as a legend.

FIG. 4 is a diagram showing an example of the diagram display information. Here, the figure display information 101 is formed using the label information of FIG. 2 and the figure format 100 of FIG. The pressure is indicated by a solid line, and its scale is “2” and “10” which are the lower and upper limits of the stop threshold. The temperature is indicated by a dotted line, and the scale is “0” or “130” which is the lower limit value and the upper limit value of the stop threshold. The amount of pure water is indicated by a chain line, and the scale is “10” or “none” which is the lower and upper limits of the stop threshold. In addition, each label “pressure”, “temperature”, and “pure water amount” is set in the legend display unit 130, and an alarm message is displayed in the message display unit 140.

Also, the figure display processing unit 16 processes the label value according to the number of significant digits or the number of digits after the decimal point obtained from the label information, and displays it on the display unit 17. At this time, the unit obtained from the label information is added to the processed label value and displayed on the display unit 17.

The display unit 17 displays the diagram display information 101 formed by the diagram display processing unit 16. The display unit 17 is configured by a display device such as a liquid crystal display device or an organic EL (ElectroLuminescence) device.

Next, display processing on the display 10 will be described. FIG. 5 is a flowchart illustrating an example of a procedure of display processing on the display according to the first embodiment. First, it is assumed that the display device 10 is connected to the programmable controller via the communication unit 11. Next, label information is acquired from an external device via the communication unit 11 of the display 10 (step S11) and stored in the label information holding unit 12. Moreover, a unit label is also acquired via the communication part 11 (step S12).

After that, when the programmable controller starts to execute periodic processing based on the program, the figure display processing unit 16 acquires the figure format 100 from the figure format storage unit 15, and the unit label and unit label acquired in step S 12 are acquired. The figure display information 101 is formed using the corresponding label information and displayed on the display unit 17 (step S13).

Next, the label value is received via the communication unit 11 (step S14). The received label value is temporarily stored in the label value storage unit 13. The figure display processing unit 16 reflects the received label value in the figure display information 101 (step S15). Specifically, the label value is plotted on the graph display unit 110 of the diagram format 100 to generate a graph.

Furthermore, the label information analysis unit 14 determines whether or not the received label value is within the range defined by the alarm threshold (step S16). In this case, the alarm range is a range below the lower limit value of the alarm threshold or a range above the upper limit value. If the label value does not exist within the alarm range (No in step S16), the label value is within the normal value range, and no special processing is performed in place of the current processing. Return to step S14.

On the other hand, if the label value is within the alarm range (Yes in step S16), it is further determined whether the received label value is within the range defined by the stop threshold (step S17). . In this case, the stop range is a range below the lower limit value of the stop threshold or a range above the upper limit value. If the label value does not exist within the stop range (No in step S17), the label value analysis unit 14 obtains an alarm message from the label information because the label value exists within the alarm range. Reflected in the figure display information 101 (step S18). Here, the alarm message is displayed on the message display unit 140 of the diagram format 100. Then, it returns to step S14.

If the label value is within the stop range (Yes in step S17), the label value analysis unit 14 acquires the stop message from the label information because the label value is within the stop range. This is reflected in the figure display information 101 (step S19). Here, the stop message is displayed on the message display unit 140 of the diagram format 100. Then, it returns to step S14.

The above processing is executed for all the unit labels acquired in step S12. In the above example, the process of determining whether the label value is within the alarm or stop range is performed after receiving the label value in step S14, but the determination process is performed at a predetermined timing after receiving the label value. May be performed.

In Embodiment 1, the figure display information 101 is created by embedding the label information read from the external device in the figure format 100 and displayed on the display unit 17. As a result, even when the type of programmable controller connected to the display device 10 changes, a display message customized freely can be displayed on the display device 10 without changing the display device 10 side.

Also, it is determined by the display 10 whether the label value received from the programmable controller is within the range set in the label information, and the result is displayed on the display unit 17. Thereby, it is determined whether the label value is within the set range, and the process for causing the display 10 to perform the display process based on the result is not executed on the programmable controller side. The processing load on the programmable controller can be reduced.

Furthermore, conventionally, the unit conversion, the number of significant digits, the number of digits after the decimal point, the threshold value, and the message must be set on the display unit side. If there are multiple display units, they must be set on each display unit. I had to. On the other hand, in the display device 10 according to the first embodiment, the contents of the label information are acquired based on the diagram format 100 and displayed on the display unit 17, so there is no need to make settings on each display device 10. Only the label information needs to be set (edited). Therefore, there is also an effect that processing to be displayed on the display device 10 can be easily performed as compared with the conventional case.

Embodiment 2. FIG.
In the second embodiment, description will be given of creation of a branch processing program based on label information in a programmable controller to which a display is connected and display processing at the time of branch processing.

FIG. 6 is a block diagram schematically showing the configuration of the programmable controller system according to the second embodiment. The programmable controller system has a configuration in which the programmable controller 20 and the display device 10 are connected via a communication line 30. Note that the display 10 is the same as the configuration described in the first embodiment, and thus the description thereof is omitted.

The programmable controller 20 includes a communication unit 21, a label information holding unit 22, a program storage unit 23, a program execution unit 24, and a label information analysis unit 25.

The communication unit 21 is connected to the display device 10. Label information or a program execution result is transmitted to the display 10 via the communication unit 21. Moreover, it may be connected not only with the display device 10 but with other external devices such as an engineering tool. In this case, the label information or program received from the engineering tool is stored in the label information holding unit 22 or the program storage unit 23, respectively.

The label information holding unit 22 holds the label information set in the programmable controller 20. The label information is written by an engineering tool (not shown). The label information has the same configuration as that shown in FIG. 2 of the first embodiment. That is, in this example, as shown in FIG. 2, a range for issuing an alarm and a range for stopping the processing in the programmable controller 20 are defined. It is assumed that the range other than the range in which the alarm is issued is a normal operation range.

The program storage unit 23 stores a program to be executed by the programmable controller 20. This program is repeatedly executed at a predetermined cycle. The program is a program described using a label associated with an address range in the memory in the programmable controller 20, and is associated with label information. The label stores a value of input data from an external device connected to the programmable controller 20 and indicates a role of a variable indicating the value. Here, it is assumed that a program has already been created for processing for normal operation, processing for issuing an alarm, processing for stopping the processing, and processing for stopping the processing. It is assumed that the branch determination program for branching the processing in the case of being executed is not created.

The program execution unit 24 executes a program stored in the program storage unit 23. In addition, the program execution unit 24 normally performs normal operation processing, but upon receiving notification from the label information analysis unit 25 that the label value is within the alarm range, the program execution unit 24 executes processing for issuing an alarm. When the notification that the label value is in the stop range is received from the label information analysis unit 25, the process for stopping the process is executed.

The label information analysis unit 25 determines whether or not the label value exceeds the threshold value from the label information at an arbitrary timing when the program is processed by the program execution unit 24, and notifies the program execution unit 24 of the result. A branch determination program is created to perform processing based on the branch determination program. For example, the label value is compared with the alarm range of the label information corresponding to the label value. If the label value is not within the alarm range, it is not abnormal, so nothing is notified to the program execution unit 24. If the label value is within the alarm range, it is further determined whether or not the label value is within the stop range. When the label value is not within the stop range, a notification indicating that the label value is within the alarm range is transmitted to the program execution unit 24. If the label value is within the stop range, a notification indicating that the label value is within the stop range is transmitted to the program execution unit 24.

FIG. 7 is a diagram schematically showing functions in the program in the label information analysis unit. There is a processing program 210 dedicated to the measuring instrument, and its input is a label value such as temperature data 221. The output is a normal processing program 231, an alarm processing program 232, and a stop processing program 233 stored in the program storage unit 23. Here, the processing in the label information analysis unit 25 is processing 211 that performs branch determination for selecting output by a processing program dedicated to the measuring instrument. In other words, the process of switching whether the value of the input temperature data is a normal process, an alarm process, or a stop process depending on the alarm range and the stop range. Become.

In the programmable controller 20 of such a programmable controller system, the label value and the threshold value in the corresponding label information are compared, and the program for performing the selection process (branch determination process) of the process to be executed is executed without the user creating it. It becomes possible to do. Further, the display 10 can execute a process of selecting a message to be displayed on the display unit 17 by comparing whether the label value is in a range exceeding the threshold value in the label information, and is executed by the programmable controller 20. There is no need.

Next, a branch process in the programmable controller 20 will be described. FIG. 8 is a flowchart illustrating an example of a branch processing procedure in the programmable controller according to the second embodiment. Here, it is assumed that the programmable controller 20 acquires a program and label information from an engineering tool (not shown) via the communication unit 21 and stores them in the program storage unit 23 and the label information holding unit 22, respectively. .

First, the program execution unit 24 executes a program (a processing program during normal operation) stored in the program storage unit 23 (step S31). As a result, the programmable controller 20 executes the processing program during normal operation at a predetermined cycle.

Next, the program execution unit 24 sets information from an input device connected to the programmable controller 20 or a calculation result calculated using the information as a label value of a predetermined label (step S32). This label value is passed from the program execution unit 24 to the label information analysis unit 25.

The label information analysis unit 25 determines whether the label value acquired from the program execution unit 24 is within the range defined by the alarm threshold (step S33). In this case, the alarm range is a range below the lower limit value of the alarm threshold or a range above the upper limit value. If the label value does not exist within the alarm range (No in step S33), the label value is within the normal value range, and no special process is performed, and the process returns to step S31.

On the other hand, if the label value is within the alarm range (Yes in step S33), it is further determined whether the acquired label value is within the range defined by the stop threshold (step S34). . In this case, the stop range is a range below the lower limit value of the stop threshold or a range above the upper limit value.

If the label value does not exist within the stop range (No in step S34), the label value is within the alarm range. Therefore, the label information analysis unit 25 has the label value within the alarm range. This is notified to the program execution unit 24 (step S35). Upon receiving a notification from the label information analysis unit 25 that the label value is within the alarm range, the program execution unit 24 executes the alarm processing program instead of the normal operation processing program (step S36). The process ends. The processing program at the time of an alarm executes a process of leaving a history when an alarm occurs or turning on a lamp for notifying an alarm.

If the label value is within the stop range (Yes in step S34), the label value is within the stop range. Is notified to the program execution unit 24 (step S37). Upon receiving a notification from the label information analysis unit 25 that the label value is within the stop range, the program execution unit 24 executes the stop processing program instead of the normal operation processing program (step S38). The process ends. The processing program at the time of stop executes a highly urgent process that outputs a message such as whether to stop the process or whether to move the next ladder program.

In parallel with the process shown in FIG. 8, the display 10 executes the process shown in FIG. Since this process has already been described in the first embodiment, a description thereof will be omitted.

In Embodiment 2, in the programmable controller system in which the programmable controller 20 and the display device 10 are connected via the communication line 30, the programmable controller 20 creates a branch processing program based on the information regarding the range in the label information, The processing is selected according to the label value. This has the effect that the user need not create a branch processing program. Further, the display 10 displays a message as described in the first embodiment with reference to label information from the label value obtained from the programmable controller 20. As a result, with respect to the display process on the display device 10, since the process in the programmable controller 20 is not performed, the load on the programmable controller 20 can be reduced.

Embodiment 3 FIG.
In the second embodiment, the display device is connected to the programmable controller via a communication line. In Embodiment 3, a programmable controller with a built-in display device will be described.

FIG. 9 is a block diagram schematically showing the configuration of the programmable controller according to the third embodiment. The programmable controller 20A includes a communication unit 21, a label information holding unit 22, a program storage unit 23, a program execution unit 24, a label information analysis unit 25, and a display 26.

The display 26 is provided inside the programmable controller 20A, and includes a label information analysis unit 14, a diagram format storage unit 15, a diagram display processing unit 16, and a display unit 17. These components are the same as those described in the first and second embodiments, and the description thereof is omitted. However, the label

information analysis units

14 and 25 are provided in the programmable controller 20A and the display 26. Further, the diagram display processing unit 16 creates diagram display information to be displayed on the display unit 17 using the label value obtained from the program execution unit 24. Further, the label information analysis unit 14 in the display device 26 performs processing such as displaying a message according to the label information, using the label value passed from the figure display processing unit 16.

In addition, since the process in such a programmable controller 20A is the same as that of what was demonstrated in FIG. 8 of Embodiment 2, the description is abbreviate | omitted. Further, since the processing in the display 26 is the same as that described in the first embodiment, the description thereof is omitted.

Also in the third embodiment, the same effect as in the second embodiment can be obtained.

Embodiment 4 FIG.
In the fourth embodiment, generation processing of a branch processing program based on label information in an engineering tool for creating a program used in the programmable controller or setting the programmable controller will be described.

FIG. 10 is a block diagram schematically showing the configuration of the engineering tool according to the fourth embodiment. The engineering tool 50 includes a communication unit 51, a unit configuration diagram setting unit 52, a unit specific information storage unit 53, a label information storage unit 54, a label information setting unit 55, a program component storage unit 56, and a program setting unit. 57 and a program generation unit 58.

The communication unit 51 is connected to an external device such as a programmable controller or a display device via a communication line. The unit configuration diagram setting unit 52 selects a unit to be used (set) from the unit list, and performs a process of drawing a diagram simulating an actual system. The unit configuration diagram setting unit 52 generates unit specific information for uniquely identifying the selected unit, and also generates a unit label. Furthermore, the unit configuration diagram setting unit 52 generates label information using default label information for the selected unit. The unit unique information storage unit 53 stores unit unique information. The unit specific information is associated with the label information.

The label information storage unit 54 stores label information set in the programmable controller to be constructed. This label information is the same as that described in the above embodiment. The label information setting unit 55 is an interface that allows the user to edit label information.

The program part storage unit 56 stores program parts. In addition to the sample program in which the unit-specific operation is defined as the program part, a unit program that combines the sample program and the determination processing program generated by the program generation unit 58 based on the label information is also included.

The program setting unit 57 is an interface that allows a user to create and edit a program including a program component stored in the program component storage unit 56. Since the program parts in the program part storage unit 56 are format-like, the program parts can be customized to unit-specific program parts selected by the unit configuration diagram setting unit 52 based on the program parts.

The program generation unit 58 creates a determination program for determining whether or not the threshold added to the label information has been exceeded from the unit specific information and the label information corresponding to the unit. Further, the created determination program is added to the program part of the arithmetic processing unique to the unit that is the basis of the determination program to generate a unit program that can be edited by the user. The generated unit program is stored in the program component storage unit 56 as a program component. The generated program component is, for example, a ladder program.

Next, processing by the engineering tool 50 having such a configuration will be described. FIG. 11 is a flowchart illustrating an example of a procedure of a program generation process according to the fourth embodiment. It is assumed that the engineering tool 50 stores unit type information including the type of unit to be used and default label information that is the basis of the label information. Further, it is assumed that the program component storage unit 56 stores a program component that defines a unit-specific operation for each type of unit used.

First, the user sets the system configuration via the unit configuration diagram setting unit 52 (step S51). This setting is performed by, for example, arranging a diagram showing each unit such as a power supply unit, a CPU unit, a network unit, and an input / output unit from a list of unit type information on the diagram showing the base unit.

When the unit arrangement (programmable controller configuration setting) is completed, the unit configuration diagram setting unit 52 generates a unit label (step S52). Specifically, the unit configuration diagram setting unit 52 sets unit-specific information for uniquely identifying a unit in the set system configuration for the selected unit, and a memory area used by the selected unit. A label (unit label) is generated for.

Thereafter, the unit configuration diagram setting unit 52 sets label information in the unit label (step S53). Since the default label information is associated with the unit type in the unit type information list, the label (unit label) generated for the selected unit is selected by setting the default label information. This is the label information of the selected unit. This label information is stored in the label information storage unit 54. In this way, the label information and the unit specific information are linked.

As shown in FIG. 2 of the first embodiment, the label information includes items such as a label, a data type, a threshold value, a unit, the number of significant digits, the number of digits after the decimal point, a message, and an address. Among these, default values are set for the threshold value, unit, number of significant digits, number of digits after the decimal point, and message. However, when changing these default values, the label information setting unit 55 can be changed by the user. Edited.

Next, the program generation unit 58 generates a branch determination program from the threshold value of the label information (step S54). From the threshold value (range) of the label information, the label value is compared with the threshold value, and a branch determination program that performs a branch process when the label value is within the range and outside the range is generated.

Thereafter, the program part corresponding to the unit label is acquired from the program part storage unit 56 from the label information (step S55). Since the label information is associated with the unit type, the program component corresponding to the unit type is acquired from the program component storage unit 56.

Next, the program generation unit 58 creates a unit program by combining the acquired program component and the generated branch determination program (step S56), and stores the unit program as a program component in the program component storage unit 56 (step S57). . Thus, the process in the engineering tool 50 is completed.

The program parts are the languages (LD (Ladder Diagram) language), ST (Structured Text) language, FBD (Function Block Diagram) language, IL (Instruction List) language, SFC (Sequential Function Chart) language that the engineering tool 50 supports. ) Or the like, or in the case of a C language controller, it may be created with a C language function.

FIG. 12 is a diagram showing an outline of processing for generating a program part by the engineering tool according to the fourth embodiment. As shown in this figure, the program generation unit 58 includes a program part 321 relating to a specific arithmetic process for a certain unit, a program part 331 relating to a process when the label value in that unit is within the set range, and a label value. Is acquired from the program component storage unit 56. In addition, the program generation unit 58 generates a branch determination program 310 from the label information. Then, a branch determination is made so as to link the program component 321 relating to the specific arithmetic processing, the program component 331 relating to the processing when the label value is within the setting range, and the program component 332 relating to the processing when the label value is outside the setting range. A unit program is created by combining the programs 310. As a result, a program component for the set label information is generated.

In addition, the program generation process by the engineering tool 50 mentioned above can be comprised as a program which stored the processing procedure. The program can be realized by executing the program on the above-described engineering tool 50 or an information processing terminal such as a personal computer. This program also includes hard disks, SSD (Solid State Drive), floppy (registered trademark) disks, CD (Compact Disk) -ROM, MO (Magneto-Optical disk), DVD (Digital Versatile Disk or Digital Video Disk), etc. It is recorded on a computer-readable recording medium. This program can also be distributed through a network (communication line) such as the Internet.

In Embodiment 4, the engineering tool 50 has a function of generating a branch determination program from label information, and a unit program is generated in combination with a program component corresponding to the unit and stored as a program component. Also, a branch determination program is created from the label information edited by the user. Accordingly, it is possible to create a program part including a branch determination program corresponding to the environment in which the unit is used from the default label information.

As described above, the programmable controller according to the present invention is useful for a programmable controller that operates based on label information for which branch determination is defined.

10, 26 display, 11, 21, 51 communication unit, 12, 22 label information holding unit, 13 label value storage unit, 14, 25 label information analysis unit, 15 diagram format storage unit, 16 diagram display processing unit, 17 display Unit, 20, 20A programmable controller, 23 program storage unit, 24 program execution unit, 30 communication line, 50 engineering tool, 52 unit configuration diagram setting unit, 53 unit specific information storage unit, 54 label information storage unit, 55 label information setting Unit, 56 program parts storage unit, 57 program setting unit, 58 program generation unit, 100 diagram format, 101 diagram display information, 110 graph display unit, 121a, 121b, 122a, 122b, 123a, 123b scale display unit, 130-133 Legend display unit, 140 message display unit.

Claims

A programmable controller system in which a programmable controller and a display are connected by a communication line,
The programmable controller is
A program execution unit that executes a program created using a label attached to an address range assigned to the memory of the programmable controller;
A label information holding unit for holding label information in which a range defining the program to be executed for a label value stored in an address range defined by the label and a message are associated with each other;
When the label value is stored in the address range defined by the label, the processing is divided into a case where the label value is within the range and a case where the label value is out of the range, using the range of the label information. A label information analysis unit;
With
The indicator is
A display unit;
When the label value is acquired from the programmable controller, a diagram display processing unit that displays the state of the label on the display unit based on the label information;
When the label value is acquired from the programmable controller, a second label information analysis unit that uses the range of the label information to divide the process between the case where the label value is within the range and the case where the label value is outside the range; ,
With
When the first label information analysis unit determines that the label value is within the range, the program execution unit executes a processing program corresponding to the determination result,
When the second label information analysis unit determines that the label value is within the range, the diagram display processing unit acquires a message corresponding to the case where the label value is within the range from the label information. And displaying the information on the display unit.
The label information includes a plurality of ranges and a message for each range,
When the range including the label value is determined by the first label information analysis unit, the program execution unit executes a processing program whose contents are defined according to the range,
When the range in which the label value is included is determined by the second label information analysis unit, the figure display processing unit acquires a message defined according to the range from the label information, and displays the message on the display unit. The programmable controller system according to claim 1, wherein the programmable controller system is displayed.
The diagram display processing unit includes a graph display unit that displays the label value in a graph, a scale display unit that associates a scale of the graph display unit with a threshold value indicating the range in the label information, and the label value is the 2. The programmable controller system according to claim 1, wherein display processing is performed based on a diagram format that defines a message display unit that displays a message in the label information when it is within a range.
A program execution unit that executes a program created using a label attached to an address assigned to the memory of the programmable controller;
A label information holding unit for holding label information in which a range set for a label value stored in an address range defined by the label and a message are defined;
When the label value is stored in the address range defined by the label, the processing is divided into a case where the label value is within the range and a case where the label value is out of the range, using the range of the label information. A label information analysis unit;
A display unit;
Upon obtaining the label value, a diagram display processing unit that displays the state of the label on the display unit based on the label information;
When the label value is acquired, using the range of the label information, a second label information analysis unit that divides the processing between the case where the label value is within the range and the case where the label value is outside the range;
With
When the first label information analysis unit determines that the label value is within the range, the program execution unit executes a processing program corresponding to the determination result,
When the second label information analysis unit determines that the label value is within the range, the diagram display processing unit acquires a message corresponding to the case where the label value is within the range from the label information. And displaying on the display unit.
The label information includes a plurality of ranges and a message for each range,
When the range including the label value is determined by the first label information analysis unit, the program execution unit executes a processing program whose contents are defined according to the range,
When the range in which the label value is included is determined by the second label information analysis unit, the figure display processing unit acquires a message defined according to the range from the label information, and displays the message on the display unit. The programmable controller according to claim 4, wherein the programmable controller is displayed.
The diagram display processing unit includes a graph display unit that displays the label value in a graph, a scale display unit that associates a scale of the graph display unit with a threshold value indicating the range in the label information, and the label value is the 5. The programmable controller according to claim 4, wherein display processing is performed based on a diagram format that defines a message display unit that displays a message in the label information when it is within a range.
An engineering tool for setting up a programmable controller,
A label set for an address range of a memory used by a unit selected when configuring the programmable controller, a range set for a label value stored in an address range defined by the label, A unit configuration diagram setting unit that generates label information including the selected unit;
A program component storage unit that stores program components that define specific operations for the unit;
Using the range of the label information, create a branch determination program that divides processing depending on whether the label value is within the range or outside the range, and for the unit corresponding to the label information A program creation unit that acquires the already created program part from the program part storage unit, creates a unit program that combines the acquired program part and the branch determination program, and stores the unit program in the program part storage unit; ,
An engineering tool characterized by comprising
The engineering tool according to claim 7, further comprising a label information setting unit capable of editing the label information.
The engineering tool according to claim 7, further comprising a program setting unit capable of editing the program component in the program component storage unit.
A display connected to a programmable controller,
A display unit;
A label information holding unit for holding label information in which a range set for a label value stored in a label attached to an address range in the memory of the programmable controller and a message are defined;
When the label value is acquired from the programmable controller, a diagram display processing unit that displays the state of the label on the display unit based on the label information;
When acquiring the label value from the programmable controller, using the range of the label information, a label information analysis unit that divides processing within the range and outside the range,
With
When the label information analysis unit determines that the label value is within the range, the diagram display processing unit obtains a message corresponding to the case where the label value is within the range from the label information, A display device displaying on the display unit.
The label information includes a plurality of ranges and a message for each range,
When the range including the label value is determined by the label information analysis unit, the diagram display processing unit acquires a message defined according to the range from the label information and displays the message on the display unit The display according to claim 10.
The diagram display processing unit includes a graph display unit that displays the label value in a graph, a scale display unit that associates a scale of the graph display unit with a threshold value indicating the range in the label information, and the label value is the The display device according to claim 10, wherein display processing is performed based on a diagram format that defines a message display unit that displays a message in the label information when it is within a range.
The label information further includes a content of processing performed on the label value when the label value is displayed on the display unit, and a unit indicated by the label value,
The display according to claim 10, wherein the figure display processing unit displays a numerical value obtained by processing the label value according to the processing content on the display unit using the unit.