JP3322930B2 - Program creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program creating apparatus for creating a program in the form of a graphic specification in which control operations in various devices of a plant facility are represented by graphic symbols, and more particularly to a program creating program for interlock signals. The present invention relates to a program creation device for a programmable controller capable of arbitrarily extracting the program from among them and displaying a graphical specification describing the interlock signal to monitor and display the execution state.

[0002]

2. Description of the Related Art Generally, the operation of each device in a plant facility is controlled by a process controller called a program controller. A program has been developed that expresses the operation of controlling each device of the plant equipment in the process control device in a problem-oriented language (POL language) such as a ladder diagram.

That is, a program representing a control operation is mainly described from a complicated POL language mainly composed of ladder figures, character strings, words, sentences, etc., to an easy-to-understand graphical symbol such as a flowchart. The language has been shifted to a program specification level description language. As a result, the program writer does not need special knowledge about the programming language. In addition, the program operation can be visually grasped.

On the other hand, the equipment constituting the plant equipment,
In particular, the starting conditions and operating conditions of the actuator are set for the actuator and the like during manual / automatic operation. For example, an operating condition for operating an actuator is a specific position or state of another device. These conditions are generally called an interlock.

If the relevant actuator is operated when this condition is not satisfied, the devices may be destroyed due to interference with each other or harmful to humans. Therefore,
These interlocks are very important for the safety of plant operation.

Therefore, when creating a program for a process control device that controls the operation of a control target composed of various devices including the above-described actuator, an interlock for the device is described as an interlock signal. Then, when a condition constituted by one or a plurality of interlock signal combinations is not satisfied, a program is described so as not to output an operation command or the like to the device.

[0007]

However, as described above, although the interlock is one of the important elements for safely operating the plant equipment, the interlock signal is included in the program of the process control device. Are described in a POL language such as a ladder which is the same as other signals.
Therefore, as a means of investigating the cause of the equipment being unable to operate due to a failure etc., search for a place where the relevant interlock signal is described in the program and check which conditions are not satisfied. Took a lot of time and effort. Therefore, there has been a problem that it is not possible to immediately investigate the cause of a failure or accident of a plant facility or to take measures based on the cause.

The present invention has been made in view of such circumstances, and combines a plurality of interlock signals, each of which is an operation condition of a control target, with a logic into a single graphic specification, thereby achieving a program specification. Can be simplified, and can be displayed on the monitor as necessary, so that if any device failure or accident occurs in the controlled object during program execution, the cause can be quickly investigated and countermeasures can be taken. It is an object to provide a creation device.

[0009]

In order to solve the above-mentioned problems, the present invention provides a diagram-type program for creating a program by showing a control operation for a control target in the form of a diagram-type specification using graphic symbols. Creating a program including specification program creation means and monitor display control means for displaying the graphic specification created by the figure specification creation means and its execution status on a display in the form of a figure specification In the device,

[0010] A plurality of interlock signal graphic symbols indicating an interlock signal serving as each operation condition to be controlled, a logic graphic symbol combining the plurality of interlock signal graphic symbols, and an interlock combined by the logic graphic symbol A means for creating an interlock program shown in the form of an interlock diagram format specification comprising an interlock output graphic symbol representing a signal sequence logic operation result is incorporated in the diagram format specification creating means.

Further, an interlock information generating means for generating interlock information based on an interlock output graphic symbol included in the interlock diagram format specification, and a monitor display control means are displaying the execution status of the program on a display. At this time, the interlock information display control means for displaying the interlock information generated by the interlock information generation means on the display, and the interlock information corresponding to the interlock information selected from outside among the displayed interlock information. An interlock diagram type specification selection display control means for changing the display content of the display unit to the lock figure specification is provided.

Further, in another invention, in addition to the above-mentioned invention, a display order of each interlock information on a display in the interlock information display control means based on preset device configuration and arrangement information of a control target. , An interlock information editing means for editing a display format such as a display classification into a display format corresponding to an actual device configuration and arrangement.

[0013]

With the program creating apparatus of the present invention configured as described above, the graphical specification program creating means creates a program by indicating the control operation for the control target in the form of the graphical specification. Monitors the execution state of the program in the form of a graphic specification and, if necessary, creates interlock information for switching the monitor display to a graphic specification in which another related interlock sequence is described. .

In general, one or a plurality of interlock signals, which are conditions for starting / operating / stopping each device to be controlled, are connected to each other in accordance with a certain logic (logic) determined by the mechanism to be controlled. Is done. Finally, whether or not the condition to be controlled / started / operated / stopped is determined by the result of the above-described logic operation.

Therefore, if the operation result is represented by an interlock output graphic symbol, the operation process and the operation result can be collectively shown in the form of an interlock diagram format specification.

As a result, the program of the entire control operation can be simply described in an easily understandable manner, and the program in the form of the interlock diagram format is displayed on the display unit to display the abnormality of the control object during the execution of the program. Can be easily determined.

Further, in the interlock information generating means, each interlock information is generated based on the interlock output graphic symbol included in the previously generated interlock diagram format specification. Each created interlock information is displayed on the display unit when the execution status of the program is displayed in the form of a diagram specification on the display unit.

Then, for example, when the monitor selects one piece of interlock information using a keyboard or the like, the display screen of the display is changed to an interlock figure specification corresponding to the selected interlock information. That is, any interlock diagram format specification can be confirmed during the execution of the program.

In still another invention, a display format such as a display order and a display classification of a plurality of interlock information to be displayed on a display during execution of a program is changed by an interlock information editing means to an actual device configuration and arrangement. It is edited to the display format according to. Therefore, it is displayed in a state that is easier for the observer to see.

[0020]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a program creating apparatus according to the embodiment. The program creation device of this embodiment is constituted by a kind of information processing device such as a computer.

The diagram-type specification creator 1 prepares a program in the form of a diagram-type specification in which the control operation of each device as a control object incorporated in the plant equipment is described using graphic symbols. The program created by the diagram format specification program creating unit 1 is stored in the source program file 2.

The program in the form of a diagram specification stored in the source program file 2 is
Thus, the object program is converted into an object program that can be understood by a process control device that directly controls each device, and stored in the object program memory 4. The object program written in the object program memory 4 is downloaded to an external process control device through the input / output unit 5 in real time. The process control device controls the operation of each device according to the object program downloaded from the program creation device.

The compiling unit 3 not only converts the graphic specification into an object program that can be executed by the process control device, but also converts it into monitor information that can be directly monitored in the form of the graphic specification. And stores it in the monitor information memory 7. The graphic specification written using the graphic symbols stored in the monitor information memory 7 is displayed on the monitor 9 by the monitor display control unit 8, for example, on a display 9 such as a CRT display device. Further, the monitor display control unit 8 displays the execution status of the program executed by the process control device on the control target on the display 9 on the monitor.

Further, the diagram format specification creator 1 has an interlock diagram format specification creator in addition to the program creating function of the normal diagram format. The operation of the interlock diagram format specification creation function will be described in detail with reference to FIG.

FIG. 2 is an interlock graphic specification 10 showing an automatic driving interlock and an automatic starting interlock, which show the running conditions of one of the devices, the "outside coil car".
FIG.

In FIG. 2, each interlock signal "DU"
SNBUPX "," DCCOIL "interlock signal graphic symbol 1a corresponding to etc, 1b, 1c logic connection 1d
Is located to the left of An AND. Logic for forming sequence logic by combining the interlock signal graphic symbols 1a to 1c with the logic connection 1d. OR, NO
T, each logic graphic symbol 1e, 1 such as a delay timer
f, 1 g are interposed.

In the interlock diagram format specification creation function of the embodiment, an interlock output graphic symbol 1 representing a sequence logic operation result of an interlock signal newly compiled by a logic graphic symbol is provided.
h is described.

Therefore, interlock graphic specification 1
0 indicates a plurality of interlock signal graphic symbols 1a to 1
c, a plurality of Rossic graphic symbols 1e to 1g, one interlock output graphic symbol 1h, and a logic connection 1d connecting them. Similarly,
The interlock figure specification of the automatic start interlock is also the interlock figure specification 1 of the automatic operation interlock.
0 is created in the same manner as 0. In this way, by collecting the interlock conditions for each interlock sequence, the entire program can be simply and easily described.

In FIG. 1, each interlock figure specification 10 created by the above-described method in the figure format specification creating unit 1 is stored in the source program file 2 in the same manner as a normal program.

The compiling section 3 creates an object program from the interlock diagram format specification 10 stored in the source program file 2 and sends it to the object program memory 4. At the same time, the compiling unit 3 creates monitor information for enabling the execution state of the program in the process control device to be monitored in the form of the interlock diagram format specification 10 and stores it in the monitor information memory 7.

The interlock information generating unit 11 generates the interlock information 11a, 11a, etc. relating to the interlock output graphic symbol 1h from the interlock diagram format specification 10 stored in the source program file 2 as shown in FIG.
11b is extracted and stored in the interlock information memory 12.

Each of the interlock information 11a and 11b is
As shown in FIG. 3, the interlock information 11a, 1
1b, an identifier 13b, a comment 13c, a type 13d, an output address 13e, an output page 13f, and a reference page 13g.

Also, the interlock information editing unit 14
Each interlock information 11a... Shown in FIG. 3 stored in the interlock information memory 12 based on the information on the configuration and arrangement of each device in the plant equipment stored in the device configuration / location information file 15 in advance. 11b
The display format for the display 9 in the above is edited into a format corresponding to the actual equipment by performing the order and grouping according to the configuration and arrangement of the actual equipment. The editing result is sent to the next interlock information display control unit 16.

The interlock information display control unit 16 receives the interlock information 11a received from the interlock information editing unit 14 while the monitor display control unit 8 displays the execution status of the program in the process control device on the display unit 9 during the monitor display period. , 11b are displayed on a part of the display unit 9 by, for example, window display.

The interlock diagram format specification sheet selection display control unit 17 corresponds to the interlock information specified by a keyboard or the like among the interlock information 11a and 11b displayed on the display 9 in the format described above. The display content of the indicator 9 is changed to the interlock diagram format specification 10 to be executed.

According to the program creating apparatus configured as described above, the graphic specification creating section 1 generates the interlock program shown in the form of the interlock graphic specification shown in FIG. 2 in addition to the normal operation program. create. Interlock figure specification 1 of this interlock program
Numeral 0 represents a program in which a plurality of conditions for performing an actual operation such as actual starting and stopping of a device are combined by a logic and expressed as one program.

Therefore, the entire program in the process control device can be described simply and easily. Furthermore, the interlock part, which is the most important element in the operation of each device, can be found in a short time.

Further, the interlock graphic specification 10 on the program is specially extracted and stored as interlock information, and a list of the interlock information is displayed on the display during the actual monitor display of the program at the time of executing the program. 9 is displayed. Then, for example, when an abnormality occurs, the monitor specifies the interlock information considered to be the abnormal part from the list, and the interlock graphic specification 10 corresponding to the interlock information is immediately displayed on the display 9. Is displayed. Therefore, it is possible to investigate the cause of the abnormality at the time of occurrence of the abnormality and take measures for the cause in a short time. Therefore, the reliability of the whole plant equipment can be improved.

Further, the interlock information editing unit 14 displays the interlock information 11 displayed on the display 9.
The display formats a and 11b are formats corresponding to the configuration / arrangement of actual devices to be controlled and groups. Therefore, the monitor can more quickly grasp the investigation of the failure part when the abnormality occurs.
FIG. 4 is a schematic diagram showing an entire plant control system in which a program creating device according to another embodiment of the present invention is incorporated.

In this plant control system, a plant monitoring device 21, a process control device 22, and a program creating device 23 are connected to a plant data communication network 24. And the plant monitoring device 2
In 1, the entire plant equipment is monitored, such as the status of the process control device 22 and the equipment constituting the plant, and whether or not an interlock signal is established on a program.

In the configuration of this embodiment, the interlock diagram format specification selection display control unit 17 and the display 9 of FIG. That is, the necessary interlock information is selected by referring to the interlock information memory 12 of the program creating device 23 via the network 24.

The program creating device 23 searches the selected interlock information for a program in which a corresponding interlock is described, and transmits this to the plant monitoring device 21. The program transmitted to the plant monitoring device 21 can be displayed on the display 9 on the plant monitoring device 21.

With this configuration, when the program execution status of the process control device 22 is monitored in the plant monitoring device 21, a program in a diagram format describing the interlock of each device is quickly displayed. It becomes possible. Therefore, for the operation monitor,
It is possible to provide an easy operation environment in which it is easy to determine the quality. There is also an advantage that the interlock information 11a and 11b can be used as interlock monitoring data.

[0045]

As described above, according to the program creating apparatus of the present invention, a plurality of interlock signals and a plurality of logics, which are one of the important elements in the program for controlling the operation of each device of the plant equipment, are provided. The calculation results are collectively expressed as an interlock graphic specification.
Therefore, the description of the program indicating the entire control operation is simplified.

Further, it is possible to easily generate interlock information relating to an interlock signal from a program indicating the overall control operation, and to edit or refer to the generated interlock information. Thus, the work efficiency of creating a program for displaying graphics is improved. In addition, if an error occurs during execution of the program during execution, it is possible to find out the location of the error in the program in a short time,
And it becomes possible to take measures.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a program creation device according to an embodiment of the present invention.

FIG. 2 is a view showing an interlock graphic specification created by a diagram specification creating unit of the apparatus of the embodiment.

FIG. 3 is a view showing interlock information in the apparatus of the embodiment.

FIG. 4 is a schematic diagram showing a plant control system in which a program creation device according to another embodiment of the present invention is incorporated.

[Explanation of symbols]

1 ... figure specification creation unit, 1a-1c ... interlock graphic symbol, 1d ... rosic connection, 1e-1g ... logic graphic symbol, 1h ... interlock output graphic symbol, 2 ... source program file, 3 ... compiler unit, 5 input / output unit, 48 monitor display control unit, 9 display unit, 10 interlock diagram format specification, 11 interlock information generation unit, 11a. 11b: interlock information, 14: interlock information display control unit, 17: interlock diagram format specification selection display control unit, 21: plant monitoring device, 22: process control device, 23: program creation device.

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G05B 19/04-19/05

Claims (2)

(57) [Claims] 1. A drawing specification creating means for creating a program in the form of a drawing specification in which a control operation for a control object is described using graphic symbols, and a drawing specification creating means for creating a program. In a program creating device comprising: a monitor and a monitor display control unit for displaying a program and its execution status on a display unit in the form of a graphical specification, wherein the graphical specification creating unit becomes each operating condition of the control target. A plurality of interlock signal graphic symbols indicating an interlock signal, a logic graphic symbol combining the plurality of interlock signal graphic symbols, and an inter representing a sequence logic operation result of the interlock signal combined by the logic graphic symbol. Shown in the form of an interlock diagram format specification consisting of lock output graphic symbols Look including means for creating interlock program, further prior to inclusion in said interlock diagram form Specifications
Interlock based on the output graphic symbol
Interlock information generating means for generating lock information;
The monitor display control means controls the execution status of the program.
Generates the interlock information when being displayed on the display
The interlock information created by the means is displayed on the display
Interlock information display control means for displaying, and the display
Of the middle interlock information selected from outside
Interlock graphic specifications corresponding to turlock information
Interlock diagram format for changing display contents of the display
A program creation device comprising: specification sheet selection display control means . 2. A display format such as a display order and a display classification of each interlock information in the interlock information display control means in the interlock information display control means based on a preset device configuration and arrangement information of the control target. 2. The program creating apparatus according to claim 1, further comprising interlock information editing means for editing the display format according to the device configuration and arrangement.