JPH07287675A - Information processing system - Google Patents

Abstract

PURPOSE:To facilitate the addition or change of functions in an information processing system by calling out a function of the corresponding name by a 1st information processor when the information including the function name is received from a 2nd information processor via a communication means. CONSTITUTION:The information is sent to a slave station 2 serving as a 1st information processor from a personal computer 4 serving as a 2nd information processor so that a function of the name serving as a subroutine to acquire the head address of a storage area storing the information is called out. The station 2 stores the functions a1, a2 to an, i.e., the closed subroutines in a prescribed storage area of a memory. Furthermore the station 2 calls out a function of the corresponding name via a function name calling part 5 when the information including the function name is received from the computer 4 via an interface. Thus the addition and change of functions can be facilitated without affecting other programs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects two information processing apparatuses so that they can communicate with each other, transmits information from one information processing apparatus to another information processing apparatus, and has a certain function of the other information processing apparatus. The present invention relates to an information processing system for realizing the above.

[0002]

2. Description of the Related Art In recent years, in various plants such as buildings, factories, roads, electric power, and water treatment, in order to efficiently operate, maintain, and manage the plant, various equipment such as power receiving and distribution equipment, lighting, disaster prevention equipment, etc. Are centrally monitored and controlled by the monitoring and control device.

As shown in FIG. 5, the above-mentioned monitor and control device is
A parent station 51 that remotely controls and monitors the equipment 53 connected to the child station 52 via the child station 52, and display data and measurement data from the equipment 53 that are input and transmitted to the parent station 51. It is composed of a slave station 52 which controls the equipment 53 based on the control data received from the station 51. The master station 51 and the slave station 52 are connected by an optical fiber etc.
DLC (High-level Date Link Control) communication is performed, and the slave station 52 and the facility device 53 are connected by an RS-232C interface.

In the above monitoring and control apparatus, when maintenance is performed, a personal computer (hereinafter, referred to as a personal computer) to the slave station 52 via the RS-232C interface.
(Referred to as a personal computer) 54, and using the personal computer 54, confirmation of control data sent from the master station 51 by HDLC communication, confirmation of display data / measurement data transmitted to the master station 51 by HDLC communication, Equipment 53
Various maintenance functions such as display data / measurement data confirmation input, display data / measurement data simulation input, control data simulation input, etc. are realized.

In order to realize the various maintenance functions as described above, conventionally, a type code uniquely determined for each function is set, and as shown in FIG. 6, a type code corresponding to a certain function and a necessary type code are required. Information of a predetermined communication format including data is transmitted from the personal computer 54 to the slave station 52 by RS-232C communication.
The slave station 52 has a program for realizing various functions A1, A2, ... An, and also has a function analysis unit 55 that analyzes the function based on the type code sent from the personal computer 54. When the type code is received from 54, the function corresponding to the type code is executed, and the execution result is returned to the personal computer 54 if necessary. Then, the personal computer 54 displays the function execution result (for example, display data or measurement data) from the slave station 52 on a display unit (not shown).

[0006]

When the communication format of the information transmitted from the personal computer 54 to the slave station 52 and the maintenance function of the slave station 52 are dependent on each other, as in the conventional system described above, Even if a function is added on the station 52 side, not only is a program for realizing the added function added to the slave station 52, but a type code corresponding to the added function is determined, and the function analysis unit 55 The function analysis program of the function analysis unit 55 must be changed at the same time so that the additional function can be analyzed. As described above, in the above-mentioned conventional system, there is a problem that it takes a lot of time and effort to change a program when adding or changing a function.

The present invention has been made in view of the above, and an object thereof is to provide an information processing system which can easily add or change a function.

[0008]

In an information processing system according to the present invention, a first information processing apparatus and a second information processing apparatus are communicably connected by a communication means, and the second information processing apparatus is connected via the communication means. And transmitting the information to the first information processing device to execute various functions of the first information processing device, and the following means are taken to solve the above problems. Characterize.

That is, the first information processing apparatus has a function calling means for calling a function having the function name when the information including the function name sent from the second information processing apparatus is received via the communication means. is doing.

[0010]

According to the above configuration, when the information including the function name is transmitted from the second information processing apparatus to the first information processing apparatus via the communication means, the function having the function name is obtained in the first information processing apparatus. It is called and executed. In this way, the functions of the first information processing apparatus can be freely called from the second information processing apparatus, so that information can be given from the second information processing apparatus to the first information processing apparatus to flexibly perform various functions. I can do it.

Further, in the first information processing apparatus, even when a new function is added to add or change an executable function, the function is a closed subroutine, so that it affects other programs. However, it is possible to easily add or change the function.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS.

In this embodiment, an example of the configuration of the information processing system of the present invention will be described using a supervisory control device. As shown in FIG. 2, the monitoring control device includes a master station 1 that remotely controls and monitors the equipment 3 connected to the slave station 2 via the slave station 2.
And the display data (contact input information, failure information, etc.) and measurement data (current value, voltage value, etc.) are input from the equipment 3 and transmitted to the master station 1, and based on the control data received from the master station 1. And a slave station 2 for controlling the facility equipment 3. The master station 1 and the slave station 2 are both configured by a microcomputer. The master station 1 and the slave station 2 are connected by an optical fiber or a twisted pair wire or the like for HDLC communication, and the slave station 2 and the equipment 3 are connected by an RS-232C interface.

At the time of maintenance of the supervisory control device, the slave station 2 as the first information processing device is provided with R as communication means.
If the personal computer 4 as the second information processing device is connected via the S-232C interface, the control data transmitted from the master station 1 by HDLC communication can be confirmed and the HDL can be confirmed.
Confirmation of display data / measurement data transmitted to the master station 1 by C communication, confirmation of display data / measurement data input from the equipment 3, simulated input of display data / measurement data,
Various maintenance functions such as simulated input of control data can be realized.

In order to realize the above-mentioned various maintenance functions, the system of this embodiment is configured to call a function (subroutine) on the slave station 2 side from the personal computer 4 side through the RS-232C interface. ing. That is, the communication format of the information transmitted from the personal computer 4 to the slave station 2 is set to be the same as the function call processing in the slave station 2, and the function call can be performed through the RS-232C communication.

As shown in FIG. 1, the slave station 2 stores a plurality of closed subroutine functions a1, a2, ... An in a predetermined storage area in a memory (not shown), and RS- It has a function calling unit 5 which calls a function having the function name when it receives information including the function name from the personal computer 4 via the 232C interface. The function calling unit 5 is a CP (not shown) of the slave station 2 that executes the function calling program stored in the memory of the slave station 2.
It is a functional module configured by U (Central Processing Unit).

A table in which a function name and a function address are written is stored in a predetermined storage area of the memory of the slave station 2, and the function calling unit 5 calls the function based on the table. I do.

The realization of the maintenance function using the personal computer 4 in the above configuration will be described below.

First, as shown in FIG. 2, the slave station 2 and the personal computer 4 are connected by an RS-232C interface, and as shown in FIG. 1, from the personal computer 4 to the slave station 2, "function name (parameter)" is displayed. The information of the communication format is transmitted.

For example, the case of realizing a function of "confirming (displaying) contact information as display data input from the equipment 3" will be described below.

In this case, first, since the function with the function name "Point", which is a subroutine for obtaining the start address of the storage area in which the information is stored, is called, the personal computer 4 is called.
Sends the information "Point (CI)" as shown in FIG. “CI” is a parameter indicating contact information.

Slave station 2 which received the above information from personal computer 4
Then, the function call unit 5 in FIG.
The function “t” is called to obtain the start address of the storage area storing the contact information, and the obtained start address is returned to the personal computer 4 via the RS-232C interface. As a result, the top address (for example, address 100) of the storage area storing the contact information is displayed on the display unit of the personal computer 4.

Next, in order to call the function having the function name "Sdump" which is a subroutine for dumping the storage information in the memory of the slave station 2, the information "Sdump (100, 10)" as shown in FIG. Is transmitted to the slave station 2.
“100, 10” is a parameter indicating an address and a size.

The slave station 2 which receives the above information from the personal computer 4
Then, the function call unit 5 in FIG. 1 displays the function name "Sdump".
Function is called and information (contact information) from address 100 to address 110 in the memory is transferred to the personal computer 4 via the RS-232C interface. As a result, contact information is displayed on the display unit of the personal computer 4.

As described above, the function of confirming (displaying) the contact information can be realized.

As described above, in the present system, the personal computer 4 can call various functions via the RS-232C interface in the same manner as the main routine in the slave station 2 calls various functions.

By the way, in the slave station 2, for example, when a new subroutine for writing information to a designated storage area in the memory is newly added, the subroutine is stored in a predetermined area in the memory and the function name " S
If the "write" and the start address of the storage area in which the subroutine is stored are registered in the table in the memory of the slave station 2, it is not necessary to change other programs. This is because the function to be added is a closed subroutine, and therefore the addition of the function does not affect other programs.

When the function of the above function name "Write" is used to realize the function of simulating the input of control data, first, the top address of the storage area of the control data is obtained. , The information "Point (RO)" is transmitted from the personal computer 4 to the slave station 2, and the function having the function name "Point" is called. The above "RO"
Is a parameter indicating control data.

Slave station 2 which received the above information from personal computer 4
Then, the function call unit 5 in FIG.
The function “t” is called, the start address of the storage area storing the control data is obtained, and the obtained start address is returned to the personal computer 4 via the RS-232C interface. As a result, the top address (for example, 10th address) of the storage area storing the control data is displayed on the display unit of the personal computer 4.

Next, in order to call the function having the function name "Write", the information "Write (1
0, 55) ”to the slave station 2. In addition, "10,55"
Is a parameter indicating an address and data, and any address and data can be set.

Slave station 2 which received the above information from personal computer 4
Then, the function call unit 5 in FIG.
The function "e" is called, and the data "55" is written to the 10th address in the memory. As a result, the function of performing simulated input of control data can be realized.

As described above, in the information processing system of this embodiment, the slave station 2 as the first information processing device and the personal computer 4 as the second information processing device are RS-2 as communication means.
32C interface is connected for information communication, and when the slave station 2 receives the information including the function name sent from the personal computer 4 via the RS-232C interface, the function of the function name is received. This is a configuration having a function calling unit 5 for calling.

As a result, the program on the slave station 2 side and the program on the personal computer 4 side coexist and operate like a multi-CPU, and the functions on the slave station 2 side can be freely called from the personal computer 4 side. Substation 2 according to instructions from 4
The functions that can be executed with become flexible. That is, in the conventional system, a type code uniquely set for each function is set, and information including the type code is transmitted from the personal computer to the slave station to execute the function of the slave station side. However, in this system, the functions on the slave station 2 side can be executed by the PC 4
Since it can be freely called from the side and executed,
The function of the slave station 2 can be freely executed regardless of the type code.

Further, even when a new function is added to the slave station 2 in order to add or change the function of the slave station 2, since that function is a closed subroutine, it does not affect other programs. Without this, it is possible to easily add or change the function.

In the above embodiment, the information processing between the slave station 2 of the supervisory control device and the personal computer 4 has been described.
The present invention is not limited to this, and can be applied to information processing between any information processing devices connected by a communication means so that information can be communicated. Further, in the above embodiment, the RS-232C interface is used as the communication means, but other communication means may be used. The above examples are merely for clarifying the technical contents of the present invention, and should not be construed in a narrow sense by limiting only to such specific examples. The spirit of the present invention and the scope of claims It can be implemented with various modifications.

[0036]

As described above, according to the information processing system of the present invention, the first information processing device and the second information processing device are connected by the communication means so that information can be communicated with each other, and the communication means is connected from the second information processing device. Information is transmitted to the first information processing device via the communication device to execute various functions of the first information processing device, wherein the first information processing device is the second information processing device via the communication means. When the information including the function name sent from is received, the function calling means for calling the function having the function name is provided.

Therefore, the function of the first information processing device side can be freely called from the second information processing device side.
Various functions can be flexibly executed by giving information (function name) from the second information processing apparatus to the first information processing apparatus.
Then, even when a new function is added to add or change a function that can be executed in the first information processing apparatus, the function is a closed subroutine and therefore does not affect other programs. It is possible to easily add or change the above.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a block diagram showing a configuration of a main part of an information processing system.

FIG. 2 is a block diagram showing a schematic configuration of a supervisory control device to which the information processing system is applied.

FIG. 3 is an explanatory diagram showing an example of information transmitted from a personal computer of the information processing system to a child station.

FIG. 4 is an explanatory diagram showing another example of information transmitted from a personal computer of the information processing system to a child station.

FIG. 5 is a block diagram showing a schematic configuration of a supervisory control device to which a conventional information processing system is applied.

FIG. 6 is a block diagram showing a configuration of a main part of the conventional information processing system.

[Explanation of symbols]

 1 parent station 2 slave station (first information processing device) 3 equipment 4 personal computer (second information processing device) 5 function calling unit (function calling means)

Claims (1)

[Claims] 1. A first information processing device and a second information processing device are communicably connected by a communication means, and information is transmitted from the second information processing device to the first information processing device through the communication means. In an information processing system that executes various functions of the first information processing apparatus, the first information processing apparatus receives information including a function name sent from the second information processing apparatus via a communication unit. An information processing system having a function calling means for calling a function having the function name at times.