JPH1185231A - Data transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten processing time by transferring data of only a modified part at the time of transfer from a support tool to a programmable controller(PC). SOLUTION: To transfer definition data generated by the support tool 5 to the PC side, matching key arrays 6 as to the definition data 5 are generated at the same time with the generation of the definition data 5. Those matching key arrays 6 are sent to the PC side together with the definition data 5 and stored. Then matching key arrays 2 corresponding to definition data 9 on the PC side are read in the support tool side through a transmission line and prepared as matching key arrays 3. Then the matching key arrays 3 are matched against the matching key arrays 6 of the definition data 5 scheduled to be transferred. If there is a mismatching part, only the definition data corresponding to the part are transferred from the support tool to the PC together with the matching key array 6 to rewrite the definition data 9 on the PC side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable controller (hereinafter referred to as PC) connected via a transmission line.
Called. ) And a support tool.

[0002]

2. Description of the Related Art Conventionally, data transfer / collation between a PC and a support tool has been performed as shown in FIG. That is, data transfer / collation is performed according to the following procedure. 1. First, in the support tool, the definition screen (1)
Is used to create (3) the source data (2). 2. Next, the created source data (3) is compiled (4) to obtain definition data (5). 3. Next, the range A of the definition data (5) of the support tool is read, transferred to the PC via the transmission line, written to a predetermined storage area (6), and becomes definition data (7). 4. Further, the definition data (7) on the PC side is read to the support tool side via the transmission line, and is compared (8) with the definition data (5) of the support tool and collated. Here, the source data is data that is a source of table data that defines the operation of the PC. Similarly, the definition data is table data or the like that defines the operation of the PC, and is so-called object data.

[0003]

By the way, in the above-mentioned conventional method, all the definition data are transferred and collated from the top to the last data. For this reason, even for a portion where there is no change in the data, the transfer and collation are duplicated, and the extra processing time is required. Therefore, an object of the present invention is to provide a data transfer device that can reduce processing time by transferring and comparing only changed data when transferring and comparing data from a support tool to a PC. And

[0004]

Means for Solving the Problems To solve the above-mentioned problems, the invention of claim 1 is based on a P-line connected via a transmission line.
In a data transfer device that includes C and a support tool, and transfers the definition data created by the support tool to a PC via a transmission line, the definition data is created in the record unit or fixed length unit when the definition data is created in the support tool. Means for creating a collation key array consisting of a compressed code by compressing each key, storage means for storing a collation key array corresponding to the definition data provided in the support tool and the PC and held by the support tool, Means for reading the collation key array stored in the storage means on the PC side to the support tool side via a transmission line before transferring the definition data to the PC, and collating with the collation key array of the definition data to be transferred; If there is a mismatched part as a result of matching, only the definition data corresponding to that part is matched with the matching key array. Transferred from the support tool to the PC is characterized in that a means for rewriting the definition data on the PC side.

According to a second aspect of the present invention, there is provided a data transfer apparatus which includes a PC connected via a transmission line and a support tool, and transfers definition data created by the support tool to the PC via the transmission line. Means for creating a collation key array consisting of a compressed code by compressing the definition data for each record unit or fixed length unit when creating the definition data in the tool;
C means for storing a collation key array corresponding to the definition data respectively held in C, and reads the collation key arrangement stored in the storage means on the PC side to the support tool side via a transmission line. Means for collating with the collation key array of the definition data held by the support tool, and if there is a mismatched part as a result of the collation, transfer only the definition data corresponding to that part from the PC side to the support tool side Means for comparing the two definition data with each other.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of the invention according to claim 1. In this embodiment, as shown, a PC and a support tool are connected via a transmission line, and definition data created by the support tool is sent to the PC via the transmission line. Hereinafter, a specific data transfer procedure will be described.

[0007] 1. When the definition data (5) created by the support tool is to be transferred to the PC, a matching key array (6) for the definition data (5) is created simultaneously with the creation of the definition data (5) (4). I do. The collation key array is an array of a difference identification code, such as a BCC code, created by compressing the definition data for each record unit or fixed length unit when the definition data is created.
These collation key arrays are sent to the PC together with the definition data when the definition data is transferred, and are stored in a predetermined storage area.

[0008] 2. Next, the collation key array (2) corresponding to the definition data (9) on the PC side is read into the support tool via the transmission line and prepared as the collation key array (3). 3. Here, the collation key array (3) on the PC side and the collation key array (6) on the support tool side are compared (7), and a mismatched array number is detected. In the figure, the collation key arrangements of the definition data of address 1 are different from each other and are detected as mismatch.

4. Next, the definition data (5) of the portion corresponding to the detected mismatched array element number is sent to the PC side via the transmission line, and is written (8) to a predetermined storage area (address 1 in the figure). 5. At the same time, the collation key array (6) for the definition data (5) sent to the PC is also sent to the PC via the transmission line and written to a predetermined storage area (10). In these processes, if there is the same part in the definition data stored in advance on the PC side and the definition data to be transferred from the support tool side, the transfer of the definition data of that part can be omitted, and the processing time required for the transfer is reduced. Is shortened.

FIG. 2 is an explanatory view showing an embodiment of the second aspect of the present invention. This embodiment, as shown,
The PC and the support tool are connected via a transmission line, and the definition data created on the support tool side is collated with the definition data stored on the PC side via the transmission line. Hereinafter, a specific data collation procedure will be described.

1. When the definition data (5) created by the support tool is to be collated with the definition data (9) on the PC side, the collation key array (6) for the definition data (5) is created simultaneously with the creation of the definition data (5). ) Is created (4). The collation key array is a difference identification code created by compressing the definition data for each record unit or fixed length unit when the definition data is created, as in the embodiment of FIG. is there. These collation key arrays are sent to the PC together with the definition data when the definition data is transferred, and are stored in a predetermined storage area.

2. Next, the collation key array (2) corresponding to the definition data (9) on the PC side is read into the support tool side via the transmission line and prepared as the collation key array (3). 3. Here, the collation key array (3) on the PC side and the collation key array (6) on the support tool side are compared (7), and a mismatched array number is detected. In the figure, the collation key arrangements of the definition data of the address 1 are different from each other, and are detected as mismatch. 4. Next, from the definition data (9) on the PC side, a portion (shaded portion) corresponding to the detected mismatched sequence number is read into the support tool side via the transmission line, and similarly, the definition data ( The portion (shaded portion) corresponding to the mismatched sequence number is read from 5), and the two are compared (8) and collated.

In these processes, when the definition data on the PC side and the definition data on the support tool side are collated, first, the collation key arrangements of both are collated, and if a mismatched portion is detected, the mismatched array number is added. By comparing the definition data of the corresponding parts, it is not necessary to sequentially collate the entire range, and the processing time required for collation is reduced.

[0014]

As described above, according to the first aspect of the present invention, before the definition data is transferred from the PC to the support tool, the matching key arrangements of the two are compared. By transferring only the definition data corresponding to that portion together with the collation key arrangement from the support tool to the PC, redundant transfer processing is eliminated, and the processing time is reduced accordingly.

According to the second aspect of the present invention, before collating the definition data on the support tool side with the definition data on the PC side,
By comparing the collation key arrays of the two and, when there is a mismatched portion, collating only the definition data corresponding to the portion, the collation process is not repeated, and the processing time is reduced accordingly.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the invention according to claim 1;

FIG. 2 is an explanatory diagram showing an embodiment of the invention according to claim 2;

FIG. 3 is a diagram showing a conventional example.

Claims (2)

[Claims] 1. A data transfer device comprising a PC connected via a transmission line and a support tool, and transferring definition data created by the support tool to the PC via the transmission line. Means for creating a collation key array consisting of a compressed code by compressing definition data for each record unit or fixed length unit at the time of creation, and corresponding to the definition data provided in the support tool and the PC and held respectively. Before transferring the definition data from the support tool to the PC,
Means for reading the collation key array stored in the storage means on the PC side to the support tool side via the transmission line and collating it with the collation key array of the definition data to be transferred; Means for transferring only the definition data corresponding to the portion together with the collation key arrangement from the support tool to the PC, and rewriting the definition data on the PC side. 2. A data transfer device, comprising a PC connected via a transmission line and a support tool, for transferring definition data created by the support tool to a PC via a transmission line. Means for creating a collation key array consisting of a compressed code by compressing definition data for each record unit or fixed length unit at the time of creation, and corresponding to the definition data provided in the support tool and the PC and held respectively. The storage means for storing the collation key array, and the collation key array stored in the storage means on the PC side are read into the support tool via the transmission line, and collated with the collation key array of the definition data held by the support tool. If there is a mismatched portion as a result of the comparison, only the definition data corresponding to the mismatched portion from the PC side Data transfer apparatus for a means for matching the both definition data in question is transferred to port the tool side, further comprising a said.