JP2005174166A - Builder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein it is necessary to prepare a physical model for each station type and database type, and it is necessary to re-prepare the physical model for customizing the restricted number of function block categories. <P>SOLUTION: The restriction information of function block categories is described in a function block resource information file, by using a general physical model to be commonly used for each type, and whether the restricted number of the blocks of each function block category is satisfied by the description is checked. Thus, it is necessary to prepare only a single physical model and is possible to change an available block, by only rewriting the description of the function block resource information file. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a builder that constructs functional blocks such as a field control station and a database in a distributed control system, and relates to a builder that can easily customize a functional block category.

  FIG. 4 shows the function of a conventional builder. In FIG. 4, 6 is a drawing builder that constructs process control function blocks of the field control stations FCS1 and FCS2 used in the distributed control system or database function blocks of the databases DB1 and DB2.

  In order to construct these functional blocks, the drawing builder 6 reads a physical template, overwrites the read physical template, constructs a new functional block, and transfers it to the field control station FCS1 or the like. A physical model is prepared in advance for each type of field control station or database.

Field control station models include standard, diffusion, and highly distributed types, depending on the application. For example, the field control unit in the diffusion type field control station includes a station type such as a single bus structure and a double bus structure. The station type also varies depending on the type of input / output bus.
Each station type has various database types. Examples of the database type include a general-purpose type, an update type, and a remote node type. Each database type has its characteristics depending on the function block, the number of input / output points, and the like.

  In FIG. 4, 71 and 72 are physical templates for the field control stations FCS1 and FCS2, respectively, and 73 and 74 are physical templates for the databases 1 and 2, respectively. In order to construct a functional block of the field control station FCS1, the drawing builder 6 reads the FCS1 physical template 71 as shown in (A), overwrites this, constructs a functional block, and transfers it to the FCS1.

  Similarly, the physical model 72 for FCS2 is used to construct the functional block of the field control station 2, the physical template 73 for database 1 is used to construct the functional block of the database 1, and the functional block of the database 2 is used. Is constructed, the database 2 physical template 74 is read.

  In such a physical template, since an area that can be used in each category is determined for each template, there is a limit to the category of functional blocks that can be used. FIG. 5 illustrates this. The functional block category includes continuous control / arithmetic operation, sequence, general-purpose arithmetic unit, SFC, and the like, and the limit value of the number of blocks that can be used is determined depending on the category.

  A line 8 in FIG. 5 represents the limit value of the number of blocks. For example, a maximum of 1000 blocks can be taken for each of the continuous control / calculation, sequence, and general-purpose computing unit categories, and a maximum of 900 blocks can be taken for the SFC category. The limit value of the number of blocks is defined in each physical template, and the physical capacity of the template is the limit number of the functional block category.

  However, the builder with such a configuration defines the maximum value of blocks that can be taken by the functional block category in the physical template, so prepare a physical template for each field control station type or database type. There was a problem that had to be done.

  In addition, to change the limit number of functional block categories, the physical template must be changed. However, if the physical template is changed, the field control station itself must be recreated in the project, which requires a considerable amount of work. There was also a problem of becoming.

  Therefore, the problem to be solved by the present invention is to easily customize the limit number of function block categories by preparing a general-purpose physical template and using a file describing the function block category limit information for each type. It is to provide a builder that can do.

In order to achieve such a problem, the invention according to claim 1 of the present invention is:
In a builder that reads a physical template and builds a functional block based on this loaded physical template,
A general-purpose physical template that can be used in common by multiple station types or database types,
A function block resource information file describing the restriction information of the function block category,
A function block is constructed from the general-purpose physical template and a block category is checked using the restriction information; and
It is equipped with. There is no need to prepare a different template for each type.

The invention according to claim 2 is the invention according to claim 1,
The function block resource information file describes at least the maximum number of blocks that can be used in each function block category. The number of functional block categories can be easily customized.

The invention according to claim 3 is the invention according to claim 2,
The function block resource information file describes the total number of usable function blocks.
When the number of blocks that can be used in a certain functional block category is increased, the generator reduces the number of blocks that can be used in other functional block categories so that the total number of blocks does not exceed the total number. . The number of blocks can be controlled so as not to exceed the allowable amount.

The invention according to claim 4 is the invention according to any one of claims 1 to 3,
The station is a field control station in a distributed control system. There is an effect that it is not necessary to prepare a physical template for each type of field control station.

  As is apparent from the above description, according to the present invention, functional block category restriction information is described in a functional block resource information file, a functional block is constructed using a general-purpose template, and this functional block resource information file The function category is checked by the restriction information described in.

  Previously, physical templates were prepared for each station type or database type, but functional blocks can be constructed with a single general-purpose physical template, eliminating the need to prepare physical templates for each type. There is.

  In addition, the number of blocks that can be used can be changed simply by changing the restriction information described in the function block resource information file, and it is necessary to change the physical template or create a user-defined type as before. There is also an effect of disappearing.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a builder according to the present invention. The same elements as those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 1, reference numeral 1 denotes a drawing builder that constructs functional blocks of a field control station and a database. 2 is a general-purpose physical model common to each type of field control station and database, and 31 to 34 are function block resource information files describing restriction information of the function block category. The function block resource information file includes a field control station FCS1 file 31, an FCS2 file 32, a database DB1 file 33, and a DB2 file 34.

  The drawing builder 1 first reads the general-purpose physical template 2 and then reads the functional block resource information file corresponding to the field control station or database for constructing the functional block to acquire the functional block category restriction information. Then, a functional block is constructed and transferred to the target field control station or database.

  For example, in order to construct a function block of the field control station FCS1, the function block resource information file 31 for FCS1 is read as shown in the general physical model 2 and (A). Then, the function block category restriction information is acquired from the FCS 1 function block resource information file 31 to construct a function block, and the function block is transferred to the field control station FCS 1.

  Similarly, when building the functional blocks of the field control station FCS2, the databases DB1 and DB2, the corresponding functional block resource information files 32 to 34 and the general-purpose physical template 2 are set as shown in (B) to (D). The function block is read and constructed, and transferred to the target field control station FCS2 or the databases DB1 and DB2.

  FIG. 2 shows the relationship between the number of functional blocks described in the functional block resource information files 31 to 34 and the maximum number of blocks limited by the general-purpose physical template 2. Similar to FIG. 5, functional blocks include continuous control / arithmetic operation, sequence, general-purpose arithmetic unit, SFC, and the like.

  The alternate long and short dash line 41 is the limit number described in the function block resource information files 31 to 34, and the solid line 42 is the maximum block number limited by the general-purpose physical template 2. In this figure, the maximum number of blocks limited in the general-purpose physical template 2 is a constant value regardless of the category, but in the general-purpose template 2, it is actually limited by the total number of blocks in all categories. Further, the number of blocks of each category restricted by the normal function block resource information files 31 to 34 is set to a value smaller than the maximum number of blocks restricted by the general-purpose template 2.

  FIG. 3 shows a procedure for building a function in the drawing builder 1. In addition, the same code | symbol is attached | subjected to the same element as FIG. 1, and description is abbreviate | omitted. In this figure, it is assumed that a functional block of the field control station FCS1 is constructed.

  In FIG. 3, 5 is an engineering machine in which the drawing builder 1 is installed, and is connected to the field control station FCS1 via a LAN. Reference numeral 51 represents the function of the generator of the engineering machine 5, and reference numeral 811 represents a resource information database of the field control station FCS1.

  The drawing builder 1 downloads the general-purpose physical template 2, creates a functional block, and overwrites the general-purpose physical template 2. Then, the function block resource information file 31 for FCS1 is used to check whether the number of blocks exceeds the limit number for each category.

  If the limit number is not exceeded, generation is successful and the functional block is transferred to the field control station FCS1. If the number of function blocks exceeds the limit, generation fails and function blocks cannot be added.

  The limit on the number of function blocks for each category can be changed simply by changing the contents of the function block resource information file, and there is no need to change the general-purpose physical template 2. Therefore, even when the number of functional blocks in a certain category exceeds the limit number, it is possible to add a function block only by rewriting the function block resource information file and increasing the limit number of the category.

  However, the total number of functional blocks that can be used is described in this functional block resource information file, and if this total is exceeded, no functional blocks can be added. In this case, for example, when the generator wants to increase the limit number of sequence blocks, the limit number of general-purpose operation blocks may be reduced so that the total limit number does not exceed the total number of functional blocks.

It is a block diagram which shows one Example of this invention. It is a characteristic view for demonstrating the content of a functional block resource information file. It is a figure for demonstrating operation | movement of a builder. It is a block diagram of the conventional builder. It is a figure for demonstrating the restriction information of the conventional functional block category.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drawing builder 2 General-purpose physical model 31 Functional block resource information file for FCS1 32 Functional block resource information file for FCS2 33 Functional block resource information file for DB1 34 Functional block resource information file for DB2 FCS1, FCS2 Field control station DB1, DB2 Database 41 Number of functional blocks 42 Maximum number of blocks of general-purpose physical model 2 5 51 Engineering machine

Claims (4)

In the builder that reads the physical model created for the station type determined by the specifications of the station to be controlled and the database type determined by the specifications of the database used for control, and builds the functional block based on the read physical model.
A general-purpose physical template that can be used in common by multiple station types or database types,
A function block resource information file describing the restriction information of the function block category,
A function block is constructed from the general-purpose physical template and a block category is checked using the restriction information; and
A builder characterized by comprising.   The builder according to claim 1, wherein the functional block resource information file describes at least a maximum number of blocks that can be used in each functional block category. The function block resource information file describes the total number of usable function blocks.
The generator reduces the limit number of blocks that can be used in another function block category when increasing the limit number of blocks that can be used in a certain function block category, so that the total of the limit numbers does not exceed the total number. The builder according to claim 2. 4. The builder according to claim 1, wherein the station is a field control station in a distributed control system.

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