JPH04259035A - Control program producing device for instrumentation system - Google Patents

Abstract

PURPOSE:To improve the working efficiency and the reliability of a control program producing device by preventing the input mistakes without requesting an operator to have the high-level programming knowledge. CONSTITUTION:A function flow of various component elements that has a single function of an instrumentation loop is selected and arranged by a function flow chart production means 1 and 13. Thus a function flow chart is obtained. An error detector means 3 detects the presence or absence of errors in a process where the control information necessary for a control program are read out of the function flow chart and then edited for production of an intermediate data file. The error display means 3 and 21 display the error code showing the contents of errors if detected. Then an object code production means 3 produces an object code of the control program from the intermediate date file generated from the function flow chart produced when no error is detected.

Description

[Detailed description of the invention]

[Object of the invention]

0002

[Industrial Application Field] The present invention provides an operator with the process of creating a functional flow diagram from the functional flow of a component having a single function in an instrumentation loop, and creating an object code of a control program from the functional flow diagram. The present invention relates to a control program creation device for an instrumentation system that can be executed without relying on manual labor.

0003

[Prior Art] Among the above-mentioned instrumentation systems, for example, a distributed digital instrumentation system that executes process control is
Create a functional flow diagram of the specification description language for instrumentation loop control when monitoring the control loop configuration or checking or examining control operations. The distributed digital instrumentation system documents the created function flow diagram as a control function definition. Based on this documented functional flow diagram, the distributed digital instrumentation system creates a loop control program in various programming languages and inputs it to the control device.

The creation of the above-mentioned functional flow diagram and the programming of the control program will be explained in detail with reference to FIG.

The functional flow diagram 41 of the specification description language for instrumentation loop control is created by handwriting by an operator. The operator reads the control information described in the created function flow diagram 41 and writes the programming sheet 43.
Write the control program in . The control program written in the programming sheet 43 is keyed into the key-to-floppy device 45 and transferred to the floppy disk 47.
is output to. The output floppy disk 47 stores the source program and serves as an input medium for the translation device 49. The translation device 49 includes a floppy disk 47
Generates an object program by translating the source program input from. The generated object program can be stored on RS232C or floppy disk 51.
It is transmitted to the control device 53 by. When the object program is transmitted, the control device 53 converts the object program into a control program to control a controlled process such as a control valve. Since the steps from the above functional flow diagram 41 to the control program require manual work by the operator, it is not easy to quickly create the control program.

[0006]

[Problems to be Solved by the Invention] By the way, among conventional control program creation devices for instrumentation systems, for example, in a distributed digital instrumentation system, a control program is written from a functional flow diagram 41 to a programming sheet 43. The work to be described requires advanced and specialized programming knowledge and skills from the operator, and
There was a risk that the operator would make a writing error.

[0007] Furthermore, when inputting keys into the key-to-floppy device 45 in order to apply the control program written on the programming sheet 43 to the translation device 49, there is a risk that the operator may make an input error, which may reduce the reliability of the device. There was a problem that caused a decline in

The present invention has been made to solve these conventional problems, and its purpose is to eliminate the need for the operator to have advanced programming knowledge, and to
The present invention provides a control program creation device for an instrumentation system that improves the processing efficiency of the device and the reliability of the device by preventing input errors.

[Configuration of the invention]

0010

[Means for Solving the Problems] In order to achieve the above object, the present invention selects functional flows of various components having a single function of an instrumentation loop, arranges the selected functional flows, and functions. Whether or not there are any errors in the function flow diagram creation means for creating a flow diagram and the process of reading and editing the control information necessary for the control program from the function flow diagram created by this function flow diagram creation means and generating an intermediate data file. an error detection means for detecting an error; an error display means for displaying an error code indicating the content of the error when an error is detected by the error detection means; The present invention further comprises an object code creation means for creating an object code of a control program from an intermediate data file generated from a functional flow diagram created by the diagram creation means.

[0011]

[Operation] With the configuration as described above, a functional flow diagram is created by selecting functional flows of various components having a single function of the instrumentation loop and arranging the selected functional flows.

After reading the control information necessary for the control program from the created functional flow diagram, the presence or absence of an error in the process of editing and generating an intermediate data file is detected. When an error is detected, an error code indicating the content of the error is displayed. On the other hand, when there is no error as a result of error detection, the object code of the control program is created from the intermediate data file generated from the function flow diagram created by the function flow diagram creation means, so the burden on the operator is reduced and the input Mistakes can be prevented.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of a control program creation device for an instrumentation system according to the present invention.

The control program creation device for the instrumentation system is equipped with a microcomputer 1, a keyboard 11, a tablet 13, and a printer 15, and performs instrumentation loop control such as a measurement or control device shown in FIG. 7, which shows the above-described program creation procedure. From the functional flow diagram 41 to the control program, the operator's manual work is omitted.

The microcomputer 1 has a CPU 3
, a floppy disk driver 5, a hard disk driver 7, and a VRAM 9, and controls the creation of a control program from the functional flow diagram 41 shown in FIG. 7 of the control program creation device for an instrumentation system of the present invention.

The CPU 3 is connected to the keyboard 11, tablet 13, and printer 15, and stores a program for editing the functional flow input from the tablet 13 and the like to create a control program. CPU
13 is the function flow diagram 4 according to the stored program.
A control program is created from 1, and the created control program is stored in a floppy disk 17, which will be described later, or controls the display on the CRT display 21, etc.

[0018] Floppy disk driver (hereinafter referred to as FD)
It's called D. ) 5 is connected to a floppy disk 17, which will be described later, and performs input/output control with the floppy disk 17. A hard disk driver (hereinafter referred to as HDD) 7 controls storage of data on the hard disk, which will be described later. The VRAM 9 is a display memory that is connected to a CRT display 21, which will be described later, and displays information on the CRT display 21.

The keyboard 11 connected to the CPU 3 is used to input various data and the like by an operator.

The tablet 13 connected to the CPU 3 is, for example, a land tablet, and obtains the XY coordinates of characters, figures, etc. input by the operator with a pen, and outputs the XY coordinates to the CPU 3.

[0021] The printer 15 prints the functional flow diagram etc. drawn by the tablet 13.

The floppy disk 17 stores the created functional flow diagram and is also used as an input medium for the control device 53 shown in FIG.

The hard disk 19 stores created functional flow diagrams and the like.

The CRT display 21 displays the functional flow diagram 41 written in the VRAM 9 to allow the operator to visually check the functional flow and modify or change the functional flow. Further, the CRT display 21 displays the content of the error when a translation error occurs during translation of the functional flow diagram 41.

An example of the above functional flow diagram 41 will be explained using FIGS. 2 and 3.

In the figure, 23 is a basic PID-A of a part name which is an attribute of a symbol shape, and input names are TIC1234, PVC, SV, TR, etc. 2
5 is the basic P of the part name which is an attribute of the symbol shape
ID-A, and the input name is TIC5678, PVC,
SV etc. 27 is a thin shape attribute whose component name is pulse integration, and whose input name is FQ001, IND0.
01. PV etc. 29, the part name which is an attribute of the symbol shape is measurement, and the input name is FQ002 or the like. The component name 31, which is an attribute of the symbol shape, is a solenoid valve, and the input name is MV001. Similarly, the component names 33 and 35 are electromagnetic valves, and the input names are MV002 and MV003, respectively. The component name 37 is a bit logic NOT circuit. The component name 39 is a 7-point display, and the input name is LM001.

FIG. 2 shows an example of the above-mentioned functional flow diagram 41.
FIGS. 4 and 5 show printed examples of intermediate data files that read and edit tag names, function symbols, input/output terminal information, connection information, etc. from FIG. 3 and are easy to read programmatically.

In the same figure, Basic PID-A23, which is a component name with symbol-shaped attributes, has a function call number of 10, a work word count of 5, and input/output and variables indicating data input or output of input/output terminal attributes. Or attributes indicating constants or indeterminates, types indicating bits or data, or addresses, and input names are described. Similarly, input the function call number, number of words used, and input/output terminal attribute data for the symbol shape attributes from Basic PID-A25, which is the part name, to 7-point display 39, which is the part name. Or input/output indicating output, attribute indicating variable or constant or undefined, type indicating bit or data or address, and input name are described.

Next, the operation of this embodiment will be explained using the flowchart of FIG.

First, after turning on the power to the device, the operator:
When drawing a function flow that was created by hand on this device, the tablet 13 uses the symbol library shown in Figures 4 and 5 in which the symbol shapes used in the function flow, the attributes of the symbol shapes, and input/output terminals are registered. do. The operator selects a symbol from this symbol library and places the symbol. A functional flow diagram is defined by attaching tag names to the arranged symbols and repeating the above operations until a desired figure is drawn. When a functional flow diagram is defined, the operator can connect the input and output terminals of each symbol with a line between the output terminal and the input terminal, or specify the input source and output source using symbol names (variable names). Define the data flow by repeating a certain number of times. To make the functional flow easier to understand, the operator completes the functional flow diagram by drawing or commenting on the control valve or sensor (step 100).
).

[0031] The completed function flow diagram is stored on the hard disk 1.
9, the operator presses a designated key on the keyboard 11. On the other hand, when printing using the printer 15, the operator presses a designated key on the keyboard 11 to save the completed functional flow diagram (steps 110 to 1).
20).

The functional flow stored in the hard disk 19 allows the operator to use the keyboard 11 when translating the diagram.
The user presses the designated key to instruct translation of the functional flow (step 130).

When translation is instructed, the CPU 3 of the microcomputer checks the translation operation of the functional flow. If there is no translation error during translation, the CPU 3 creates an object program of the control program and writes it to the floppy disk 17. The object program written on the floppy disk 17 is loaded into the control device 53 via the input medium or RS232C (steps 140 to 160).

On the other hand, when an error occurs during the translation of the functional flow, the CPU 3 writes an error code to the floppy disk 17, and after writing, the CPU 3 writes the error code to the VRAM 9 to display the CRT display 21.
An error is displayed and the process returns to step 100 (steps 170 to 180).

As a result, the process of writing the functional flow diagram 41 surrounded by the dotted line in FIG. 7 on the programming sheet 43 can be performed without depending on the manual work of the operator, thereby improving the work efficiency of the apparatus.

[0036] Furthermore, since the handwriting work by the operator is omitted, it is possible to create a control program that reduces input errors and improves reliability, and also reduces the burden on the operator since the operator is not required to have advanced program knowledge. Can be done. Since the above-mentioned translation error is displayed, the operator can be easily notified of the translation error.

Furthermore, it becomes possible to easily add or change functions of the instrumentation system, thereby improving the versatility of the device.

[0038] Since it is possible to print the functional flow diagrams described above, it is also possible to provide and store high-quality documents.

[0039] By registering a control system with functions and advanced algorithms used in general instrument control as standard functions in the symbol library,
It is possible to create control programs with improved processing efficiency.

[0040]

[Effects of the Invention] As described above, the present invention enables processes from functional flow diagrams to control program creation to be created without relying on the operator's manual work, and therefore requires the operator to have advanced programming knowledge. without doing,
In addition, by preventing input errors, it is possible to improve the processing efficiency of the device and improve the reliability of the device.

[Brief explanation of the drawing]

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

FIG. 2 is a diagram showing an example of a functional flow diagram.

FIG. 3 is a diagram showing an example of a functional flow diagram.

FIG. 4 is a diagram showing an example of an intermediate file.

FIG. 5 is a diagram showing an example of an intermediate file.

FIG. 6 is a flowchart showing the operation of the present invention.

FIG. 7 is a diagram showing a procedure for creating a control program.

[Explanation of symbols]

1 Microcomputer 3 CPU 11 Keyboard 13 Tablet 15 Printer 17 Floppy disk 19 Hard disk 21 CRT display

Claims (1)

[Claims] [Claim 1] Functional flow diagram creation means for creating a functional flow diagram by selecting functional flows of various components having a single function of an instrumentation loop and arranging the selected functional flows, and this functional flow diagram. an error detection means for detecting the presence or absence of an error in the process of reading and editing control information necessary for the control program from a functional flow diagram created by the diagram creation means to generate an intermediate data file; and an error in the error detection means an error display means for displaying an error code indicating the content of the error when an error is detected; and a function flow diagram generated from the function flow diagram created by the function flow diagram creation means when no error is detected by the error detection means. A control program creation device for an instrumentation system, comprising: object code creation means for creating an object code of a control program from an intermediate data file.