JPH0916223A - System for sorting sequence program - Google Patents

Abstract

PURPOSE: To enable to make program for a logic sequence without considering the order of logics and feedback. CONSTITUTION: Input/output data (a) by the logics of the logic sequence are prepared and checked in order and when there is input/output data outputting an input as to the input, feedback is detected and the input/output name J of the detected feedback is replaced with an alias J' to prevent the same feedback from being detected. All feedback parts are retrieved and input/output data (b) by this retrieval are taken out in order; when the input is the output of the remaining input and output, the input/output data are moved to the tail and others are set in a result output list (c) to change the sequence order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sequence program sort system for performing feedback retrieval and proper rearrangement of sequences in the creation of logic sequence programs.

[0002]

2. Description of the Related Art A logic sequence circuit is generally created by a program. A logic sequence program is created in a system that requires high speed by using assembly language or the like as follows.

(1). Handle signals in bit units.

(2). The output of the logic is reset collectively, and the output of each logic is set when the condition of each logic is satisfied.

(3). The output of the feedback section is set / reset.

Therefore, the program is created in consideration of the following points.

(1) Consider the order of logic.

(2) Consider feedback.

That is, when creating a program having a logic sequence as shown in FIG. 4, (1) a program is created in the order of each logic 1 → 2 → 3.

(2) It is created in consideration of the feedback of the logic 3.

[0011]

By the way, when a program of a logic sequence as shown in FIG. 5 is created in the order of logic 1 → 2 → 3, the output of the AND logic of 1 is delayed.

When a program having a logic sequence as shown in FIG. 6 is created in the order of logic 1 → 2, input A is 0, input B is 0 to A is 1, and B is 1.
When, the output of logic 1 is output once.

The present invention has been made in view of the conventional problems as described above, and an object thereof is to create a logic sequence program without considering the logic sequence and feedback. It is to provide a sequence program sort system capable of performing.

[0014]

In order to achieve the above object, a sequence program sorting system according to the present invention comprises means for creating input / output data for each logic of a logic sequence, and for each created logic sequence. Input / output data is sequentially checked, and if there is input / output data that outputs it for its own input, it is detected as feedback, and feedback input means for replacing the input name of the detected feedback with another name, and feedback search means It has a sequence order rearranging means for sequentially extracting input / output data, moving the input / output data to the end if the input is the output of the remaining input / output, and setting the other input / output data in the result output list. It is what

[0015]

The feedback search means detects feedback from each input / output data and replaces the input name of feedback with the name. Therefore, after the feedback is detected, the feedback search processing can be performed without detecting the same feedback.

After the above feedback search, the sequence order rearranging means moves the input / output data to the end if the input / output data is the output of the remaining input / output,
If not, set it in the result list. Therefore, input / output data is set in the result list according to the logic order.

[0017]

Embodiments of the present invention will be described with reference to FIGS. 1 and 2 are flow charts for explaining the configuration and processing of the feedback retrieval means and the sequence order rearranging means of the system according to the embodiment, and FIG. 3 shows the logic sequence according to the embodiment and the input / output data of its program. Show. The configuration of the sorting system of the sequence program will be described below together with the processing procedure.

(1). Input / output data for each logic sequence of the logic sequence shown in FIG. 3 is created ((a) in the same figure).

(2). Feedback detection is performed from the input / output data according to the flow of FIG.

First, each input / output data is sequentially checked whether it is an input that has been inspected once, and if it is N, it is set in the inspected input list (S11, S12).

Next, regarding the input of this input list, it is searched whether there is input / output data outputting the input (S13).

Further, the search for the input of the input / output data is repeated, and one of the following conditions a, b and c is obtained.
Repeat until one is established (S11 to S15).

A. It is an input that has been inspected once.

B. There is no input / output data outputting the input.

C. The input is the output of the input / output data being checked.

Feedback is detected when the above condition C is satisfied. In this case, the input name is replaced with another name. As a result, once feedback is detected, the same feedback is not detected thereafter. Since the input / output data J in FIG. 3A is feedback data, J
→ The input name is replaced with J '. Therefore, as a result of the feedback search according to the flow of FIG. 1, the input data of FIG. 3A changes as shown in FIG.

(3). According to the flow of FIG. 2, the logic sequence programs are rearranged in an appropriate order.

First, each input / output data of FIG. 3B is sequentially taken out, and if there is input / output data and the input is not the output of the remaining input / output data, it is set in the result output list (S21 to S24).

If the input / output data is the output of another input / output data, it is moved to the end of the input / output data (S
23, S25).

By repeating the above processing until there is no input / output data, the logic sequence program in the proper order is output to the result output list.

According to the flow of FIGS. 1 and 2, the infinite loop does not occur even if there is feedback.

The result output list in the case of the logic sequence program shown in FIG. 3 is as shown in FIG. That is, the program of the logic sequence of FIG. 3 may be created in the order of the result output list.

By creating the input / output data as described above and obtaining the result output list by the flow of FIGS. 1 and 2,
When creating a logic sequence program, it can be performed without considering the logic sequence and feedback.

[0034]

Since the present invention is configured as described above, when creating a logic sequence program,
It can be done without considering the logic order and feedback. Therefore, the number of man-hours for program creation is reduced and the quality is improved.

[Brief description of the drawings]

FIG. 1 is a flowchart of feedback search means according to an embodiment.

FIG. 2 is a flowchart of a sequence order rearranging unit according to the embodiment.

FIG. 3 is an explanatory diagram of data according to the embodiment.

FIG. 4 is a circuit diagram showing a logic sequence program for explaining a conventional example.

FIG. 5 is an explanatory diagram of a program creation order according to a conventional example.

FIG. 6 is an explanatory diagram of a program creation order according to another conventional example.

[Explanation of symbols]

 A to J ... Input or output data

Claims (1)

[Claims] 1. A means for creating input / output data for each logic of a logic sequence, and sequentially checking the created input / output data for each logic, and detecting the input / output data outputting the input as feedback. Then, the feedback search means for replacing the input name of the detected feedback with another name and each input / output data from the feedback search means are sequentially taken out, and if the input is the output of the remaining input / output, move the input / output data to the end A sequence program sorting system characterized by having a sequence order rearranging means for setting the other ones in the result output list.