JPH0264733A - Processing system for hierarchized information of logic diagram - Google Patents

Abstract

PURPOSE:To evade the lowering of data processing speed and to reduce area occupied by hierarchization information by providing a hierarchy change information extracting part, a logic diagram text source and a logic diagram code table and preparing a hierarchy change information control table. CONSTITUTION:A hierarchy change information extracting part 3 in a logic diagram debugger 1 extracts hierarchy change information to show the condition of the change of a hierarchy concerning records from a logic diagram text source 5 by using a logic diagram code table 2. That is to say, when the source 5 is read, a part 3 examines the logic diagram codes of all the records of the source as referring to the code table 2. When there is, in the source 5, the logic diagram code to coincide with the logic diagram code specified as the one followed by a hierarchy change on the table 2, the part 3 records the record number of the record in which the logic diagram code exists. The part 3 obtains the hierarchy after the hierarchy change, records it by corresponding to the record number, and a hierarchy change information control table 4 is prepared. Thus, the area occupied by the hierarchization information can be reduced without lowering the data processing speed.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a hierarchical information processing method for a logical diagram program that extracts hierarchical information from a logical diagram program without one hierarchical information during processing in a logical diagram debugger.

The purpose is to reduce the area occupied by the layered information to avoid a decrease in data processing speed.

A logical diagram code table that indicates the relationship between a logical diagram code that means pattern information of a logical diagram in a logical diagram program and a hierarchy in the logical diagram program, and a hierarchy change information extraction that extracts hierarchy change information using the logical diagram code table. In a logic diagram debugger having a logic diagram section, when a logic diagram text source of a logic diagram program including the logic diagram code is read, the layer change information extraction section extracts the hierarchy using the logic diagram code table. Configure to create a change information management table.

[Industrial application field]

The present invention relates to a hierarchical information processing method for a logic diagram program, and more particularly, the present invention relates to a hierarchical information processing method for a logic diagram program that extracts hierarchical information from a logic diagram program without hierarchical information during processing in a logic diagram debugger. Regarding.

Many of the source texts of logic diagram programs (logic diagram text sources) do not have hierarchical information.

However, in order to display a logic diagram on a screen for debugging a logic diagram program, one-layer information is required. Therefore, it is necessary to obtain layering information from the source text.

[Conventional technology]

Hierarchy information means the number of control lines in a logic diagram, and generally the hierarchy changes by one with a "nested" instruction.

FIG. 6 is a diagram showing an example of a logic diagram, which is created from a source text and displayed on a screen.

In FIG. 6, 101 to 103 are control lines.

111 to 114 are graphic symbols.

One line (l record) of the logic diagram corresponds to one line (l record) of the source text. The logic diagram does not display the contents of the source text as is, but uses two diagram symbols 111 to 114 and control lines 101 to 103 so that the structure of the source text can be easily understood for debugging purposes. Displayed in layers.

For example, if "judgment data 2 > IOJ is an l record," the graphical symbol 113 of the (corresponding) type that represents the instruction "judgment"
On the other hand, since the hierarchy from the first code "start" is 1, one (first) control line 101 is drawn. Then, with the command "Judgment", a control (21m102.103 is provided and the 1st floor changes to 2.3. [Judgment data 2
＞From the next record of IOJ “〇-True” to “Data 3 to 1”
The record up to "Add" is a "nest" associated with the instruction "judgment." Therefore, a second control line 102 is provided corresponding to this "nest." Also.

From the record following "Judgment data 3 = ZEROJ" to the record "Insert "HENKA' in data 1",
This is "nesting" associated with the "judgment" instruction, and the third control line 103 corresponds to it. The hierarchy of each record is the control line to which the record corresponds, i.e.
It depends on how many control lines are provided. Therefore, the hierarchy of the logic diagram shown in FIG. 6 is as shown at the right end of the figure (this part is not displayed on the screen).

The layering information can be known from the logical diagram code that exists for each record (line) of the source text. A logic diagram code is a code that means pattern information of a logic diagram (for example, information on diagram symbols 111 to 114, etc.) in a logic diagram program. Since the logic diagram code corresponds to the command, it is possible to know the changes in the hierarchy caused by the command.

Conventionally, when determining the hierarchy of a certain record, the hierarchy of the target record was determined by tracing the changes in the hierarchy using logical diagram codes in order from the first code of the source text (the hierarchy is assumed to be l) each time. However, with this method, as the number of records increases, the processing load increases and the data processing speed decreases.

Therefore, it is conceivable to create a table of one-layered information as shown in FIG. That is, the source text is imported, and the hierarchy for all records is determined by the method described above, and this is provided as a table. From now on, you will be able to know the hierarchy of each record just by referring to this table.

[Problem to be solved by the invention]

Although the method using the table shown in FIG. 5 described above reduces the burden of processing for obtaining two-layered information, there is a problem in that the (storage) area used by this table becomes too large. Since the logic diagram debugger requires a large area for debugger processing, the area occupied by data such as nine-layered information must be made as small as possible.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hierarchical information processing method for a logic diagram program that reduces the area occupied by hierarchical information while avoiding a decrease in data processing speed.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle structure of the present invention, and shows a logic diagram debugger according to the present invention.

In Figure 1, l is a logical diagram debugger, 2 is a logical diagram code table, 3 is a layer change information extraction unit, 4 is a layer change information management table, 5 is a logical diagram text source (source text), and 6 is a logical diagram creator Section 7 is a display device.

Logic diagram debugger is a central processing bag! (CPU) and memory, various processes for debugging logic diagram programs 9 For example, logic diagram text source (hereinafter referred to as source) 5
The logical diagram obtained from the above is displayed on the display device 7.

In order to obtain hierarchical information for this display, a logical diagram code table (hereinafter referred to as a code table) 2 and a hierarchical change information extraction unit (hereinafter referred to as an extraction unit) 3 are provided, and the information obtained by these is the hierarchical change information. It is stored in a management table (hereinafter referred to as management table) 4. Code table 2 shows the relationship between the logic diagram code, which means the pattern information of the logic diagram in the logic diagram program, and the change in the hierarchy of each record (each row) in the logic diagram program. The extraction unit 3 uses the code table 2 to extract layer change information indicating the state of layer change for each record from the source 5. The management table 4 stores this hierarchy change information.

Also, for this display, the logic diagram creation unit 6.

Using the management table 4, a logical diagram is created from the source 5, and screen information for displaying it is created.

The display device 7 displays a logical diagram based on nine screen information.

[For production]

FIG. 2 is an explanatory diagram of the operation of the present invention, and shows an example of the management table 4.

Each line (each record) of the logic diagram program description in the source 5 includes a logic diagram code for displaying the instructions on that line as a pattern in the logic diagram.

When the source 5 is read, the extraction unit 3 examines the logic diagram codes of all records of the source 5 while referring to the code table 2. Then, if there is a logic diagram code in the source 5 that matches a logic diagram code defined as one that involves a hierarchical change (corresponding to an instruction) in the code table 2, the extraction unit 3 determines that the logic diagram code exists. Record the record number of the record that is Furthermore, the extraction unit 3 obtains the hierarchy (level of hierarchy) after the hierarchy change and records it in correspondence with the record number. Note that the hierarchy of the first code (first line) is set to 1 and is used as a reference.

Through the above steps, a management table 4 is created, as shown in FIG. 2, which is made up of record numbers that have changed by one level (actually, the level of the next record changes) and the level after the change.

Since the management table 4 uses only records that have changed in two levels as elements, it can use a smaller area than the table shown in FIG. 5, which uses all records as elements.

Also, what is the hierarchy of records?

without following the hierarchy changes from the first code.

It can be determined by comparing the record number of the target record with the record number of the management table 4.

Therefore, the area occupied by the one-layer information can be reduced, and the hierarchy of each record can be known without reducing data processing speed.

〔Example〕

FIG. 3 is an explanatory diagram of the embodiment and shows an example of a logic diagram displayed on one display device 7. FIG.

In FIG. 3, the numbers at the left end indicate record numbers, and the three straight lines extending vertically indicate control lines.

Note that the comment about the hierarchy change written on the right end is not displayed on the screen.

In the 17th record, there is "
"Judgment" is described. Therefore, starting from the 18th record, the hierarchy is increased by +1 to 2.

The number of control m lines is also set to two. The same applies to the 23rd and 24th records. Also, from the record of processing associated with "judgment", as in the 27th and 30th records,
Returns to the previous record's hierarchy.

Note that one line of the illustrated logic diagram (for example, "Judgment data 2>
l0J) is the code in source 5. Also 9
As shown, each record is a mouth.

Since it includes graphical symbols such as △ and ○ (even without graphical symbols, it is a type of graphical symbol), the source 5 includes logic diagram codes for displaying these.

As can be seen from Figure 3, by displaying the logical diagram hierarchically and using graphical symbols, the structure of the logical diagram (that is, the source 5) can be easily grasped, debugging is ensured, and the source 5 can be created. Enables debugging by anyone other than the user.

Next, the operation of the logic diagram debugger shown in FIG. 1 will be briefly explained with reference to FIGS. 2 through 4.

It is assumed that source 5 is the source of the logic diagram shown in FIG.

tel When the logical diagram debugger 1 executes the processing of the source 5, it first reads the source 5 code by code.

(b) The extraction unit 3 compares the logic diagram code included in the read record with the logic diagram code in the code table 2 to check whether the logic diagram code involves a hierarchical change.

For example, when the 17th record is read, "judgment" (
It is determined that the record includes a logical diagram code corresponding to the graphical symbol), and is determined to be a record that involves a change in one layer. Then, the record number "17" and the changed hierarchy "2" are recorded. The hierarchy after the change uses a counter (initial value is l), and when the logic diagram code is specified, it is set to "+1" or "
−■” to find it. The correspondence between the logic diagram code and "+1" or "-1" is included in code table 2.

By repeating the above for each record.

The management table 4 shown in FIG. 2 is obtained. If 2 bytes are allocated to the record number and 1 byte is allocated to the hierarchy, the management table 4 in FIG. 2 occupies an area of 12 bytes (16 bytes if the rJJ term is 1 byte). On the other hand, if the table of the method shown in FIG. 5 is created under the same conditions as the logic diagram of FIG.

It occupies a large area of 105 (-35'x3) bytes.

(C1 Next, source 5 is read again.

fd+ Regarding the read source 5, the logic diagram creation unit 6 creates a logic diagram and creates screen information for displaying the logic diagram.

During this process, it is necessary to know the hierarchy of each record. Therefore, the logical diagram creation section 6 refers to the management table 4 and performs the processing shown in FIG. 4 for each record.

■ Set the hierarchy to 1 as the initial value. Set J ("J" in management table 4 in FIG. 2) to O.

(2) Check whether J is equal to the final value N (4 in this case) of the rJJ entry in management table 4 in FIG.

If J=N, it is assumed that the reference to the management table 4 has ended and the process ends. If J≠N, it is assumed that the hierarchy of the target record is unknown.

Let J=J+1.

■ Record number LINE (
J) and the record number LINE (J+13) corresponding to J, which is the new value of J +1, are obtained from the management table 4. Then, these are compared with the record number of the target record (the hierarchy of which is desired).

The target record number is greater than LINE (J),
And, when LINE (J+13 or less) is not included, process (2) is performed until this condition is satisfied, and then the comparison is repeated.

■ When the target record number is greater than LINE (J) and less than or equal to LINE (J+1), the hierarchy corresponding to the target record number is set to be the hierarchy LEVEL (J) corresponding to LINE (J).

That is, LEVEL (J) is read from the management table 4.

Through the above steps, the logical diagram is hierarchized.

The display device 7 receives the screen information from the logic diagram creation section 6 and displays a one-layered logic diagram as shown in FIG.

After this, the logic diagram is debugged. The work area in the logic diagram debugger l for this debugging is 1, for example,
From that memory area, code table 2 and management table 4
This is the area excluding the area.

Therefore, by making the management table 4 smaller.

You can widen the debugging area.

〔Effect of the invention〕

As explained above, according to one aspect of the present invention, in the hierarchical information processing of a logic diagram program, by creating a management table consisting of a record number with a hierarchy change and a hierarchy after the change in the logic diagram program, nine layers are created. This makes it possible to reduce the area occupied by the data processing information, and also makes it possible to know the hierarchy without reducing the data processing speed.

Figure 4 shows the processing flow for determining the hierarchy. FIG. 5 is an explanatory diagram of the technique devised earlier.

FIG. 6 is a diagram showing an example of a logical diagram.

2 is a logic diagram debugger, 2 is a logic diagram code table, 3 is a hierarchy change information extraction unit, 4 is a hierarchy change information management table, 5 is a logic diagram text source, 6 is a logic diagram creation unit, and 7 is a display device.

Claims (1)

[Claims] A logic diagram code table (2) showing the relationship between a logic diagram code meaning pattern information of a logic diagram in a logic diagram program and a hierarchy in the logic diagram program, and the logic diagram code table (2) A logic diagram text source (5) of a logic diagram program including the logic diagram code is read in the logic diagram debugger (1) equipped with a layer change information extraction unit (3) that extracts layer change information using Regarding this, the layer change information extraction unit (3) extracts the logic diagram code table (2).
) is used to create a hierarchical change information management table (4).