JPH04229302A - Control processor - Google Patents

Abstract

PURPOSE:To read stored data out at a high speed at the time of restarting by storing and holding the data at a high speed and also storing and holding process data even at the stop of a power source. CONSTITUTION:The process data are stored in the array variable areas of a working RAM 32 for fast processing and a RAM 34 for data storage holding to which a battery E as an uninterruptive power source is connected, the stored process data are read out, and the array variable area of the RAM 34 for data storage holding is initialized at the start of the operation of the working RAM 32.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control processing device, and more particularly to a control processing device that is connected to a programmable controller (PC) or the like and performs data processing.

0002

2. Description of the Related Art Conventionally, peripheral devices have been connected to a programmable controller (hereinafter referred to as a PC if necessary). For example, a minicomputer is connected and used for data loading of production instructions, on-site debugging, and system management such as operation monitoring and maintenance.

[0003] Also, the tool uses ladder support software and is used for online monitoring and the like.

In this case, the minicomputer normally stores processing data temporarily in an array variable area such as a working RAM, or reads it out immediately in response to instructions to execute predetermined data processing. In addition, processing data is recorded and held on a magnetic recording medium, such as a floppy disk, hard disk, or IC card, and read out at a predetermined time thereafter to perform new desired data processing.

[0005] In this way, in the minicomputer, data processing is performed in the array variable area of one relatively fast working RAM, and the processed data is stored and retained in a magnetic recording medium or the like.

[0006]

[Problem to be Solved by the Invention] However, the working RAM used in the above-mentioned conventional minicomputer
The processing data stored in the array variable area of
For example, memory cannot be retained while the device is out of use. Since the processing data is so-called volatile, the processing data stored in the working RAM is stored and held in a magnetic storage medium. This storage and reading from the magnetic recording medium is performed according to a predetermined processing procedure after opening the file.

This processing procedure is more complicated than the case of using the array variable area of the working RAM, and has disadvantages such as slow processing and execution speed, and inconvenience when restarting the system.

The present invention has been made in view of the above-mentioned problems, and its purpose is to store and retain processed data even when the power is turned off, and to easily and quickly execute the processing procedure for storing the data, so that it can be restarted easily. An object of the present invention is to provide an excellent control processing device that can read stored data at high speed and improve the convenience of its use.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention stores at least the processed data in parallel in a control processing device that records and holds the processed data, and the stored processed data an uninterruptible power supply that supplies power to the first and second storage elements of the array variable area that are read in parallel, and so that the second storage element continues to operate even when the power to the first storage element is stopped; and an initialization control means for initializing the processing data stored and held in the second storage element when the first storage element starts a storage operation.

0010

[Operation] According to the control processing device of the present invention, the first and second storage elements of the array variable area process the same data in parallel, and there is no power outage even when the device is powered off, for example, when it is not in use. Processing data in the array variable area of the second storage element backed up by the power supply is stored and held. At this time, working RAMs, for example, are used as the first and second storage elements, and data processing thereof is executed at high speed.

[0011]The array variable area of the second storage element is initialized all at once when the first storage element starts operating, so that the first and second storage elements process the same data in parallel. be made into As a result, reading of stored data upon restarting is executed at high speed, and the convenience of its use is improved.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the control processing device of the present invention will be described in detail with reference to the drawings.

In FIG. 1, 10 is a well-known programmable controller for controlling, for example, a work robot. A minicomputer 20 is connected to the PC 10 as a control processing device used for, for example, data loading of production instructions, on-site debugging, and system management such as operation monitoring and maintenance.

This configuration will be explained in detail below.

The PC 10 includes a CPU such as a microprocessor (not shown), a working RAM, a system ROM storing a control program, a user program ROM storing a user program, a CRT, and a console equipped with a group of keys for inputting setting values, etc. This is a well-known configuration.

Next, the minicomputer 20 is a PC 10
The minicomputer 20 uses a common bus line for information communication, and this minicomputer 20 includes a microprocessor or other C.
The PU 24, a system program ROM 28 storing a control program for this device, and a user program ROM 29 storing a program created by a user are connected to a bus line 30.

Further, the bus line 30 of the minicomputer 20 includes a working RAM 32 which is a so-called volatile array variable area that does not store and retain processing data when the power is turned off, and an array similar to the working RAM 32. A data storage/holding RAM 34 is provided that performs parallel processing of data storage and readout of variable areas. Both a normal power supply that applies voltage through a diode D and a rechargeable battery E are connected to this data storage RAM 34.

[0018] Here, the normal power supply is for supplying the required voltage and current to each part. In this case, normal operation is performed using the voltage from the normal power source, and the battery E is charged through the resistor R. Therefore, RAM for data storage
34 will continue to operate using battery E as a power source even if the normal power of this minicomputer 20 is cut off.
There is no stoppage of operation. That is, the stored data is retained even when the power is turned off.

An input/output interface (I/F) circuit 36 is also connected to the bus line 30, which includes a display device (CRT) 38, a keyboard 40 for inputting operation instructions and data, and an external device to which a floppy disk is attached. A communication device 44 for connecting to a storage device 42 and other devices, such as a host computer that performs central management control processing.
is connected.

Next, the operation of the above configuration will be explained.

[0021] The PC 10 has a system program ROM 28.
A predetermined operation is performed using a control program stored in the computer, and then data is transmitted to the minicomputer 20 or a computer connected through the communication device 44.

This data transmission is performed by using a display device 38 and a keyboard 40 connected to an input/output interface (I/F) circuit 36 to process predetermined instruction contents.

In this case, under the control of the CPU 24, the processing data on the bus line 30 is simultaneously stored in the working RAM 32 and the data storage RAM 34 by specifying the address of the storage area in the array variable area. The processed data is read out at the same time. In this way, the working RAM 32 and the data storage RAM 34 store the same processing data, for example, processing data indicating the current day's production amount, or read out the processing data at the same time. In this case, R for data storage
AM34 is a working RAM32 and CPU with normal power supply.
It operates together with 24 etc. When the predetermined processing is completed, the processing data stored in the working RAM 32 and the data storage RAM 34 is stored in the floppy disk of the external storage device 42 by the user's operation of the keyboard 40. And mini computer 20
The normal power supply is cut off and operation stops.

At this time, since voltage is automatically applied to the data storage RAM 34 from the battery E, the power supply will not be stopped and it will continue to operate. Then, for example, when restarting the next day, the processing data representing the previous day's operating status is displayed on the display device 38, and its contents are confirmed. The reading process of the data storage holding RAM 34 at the time of restarting is faster than reading from the external storage device 42.

FIG. 2 shows a flowchart corresponding to the operation control program for simultaneous storage and readout processing stored in the system ROM 28.

First, in step 101, the working RA
The array variable areas of M32 and data storage RAM 34 are initialized.

Then, in step 102, a predetermined user program is read from the user program ROM 29.

Subsequently, in step 103, it is determined whether an instruction to secure a variable area in the array variable area of the data storage RAM 34 has been executed. here,
If the instruction to secure Yes is given, step 104
A variable area in the array variable area is defined in step 102, and the process returns to step 102.

That is, the next user program is read from the user program ROM 29, and the working R
Moving on to the definition of the variable area for holding processing data in the array variable area of AM32.

On the other hand, if the answer in step 103 is No, that is, if the command to secure the variable area in the array variable area of the data storage RAM 34 is not executed, then in step 105 the instruction to secure the variable area in the working RAM 32 is executed. It is determined whether the instruction has been executed.

Here, if Yes, step 106
A variable area is defined in step 102, and the process returns to step 102.

If the answer is No in step 105, it is determined in the next step 107 whether or not initialization of the variable area of the data storage RAM 34 has been instructed.

If YES here, the variable area of the data storage RAM 34 is initialized in step 108.

[0034] If the answer is No, proceed to the next step 109.
The predetermined command is executed in step 102, and the process returns to step 102. In this way, processing of the array variable area is executed.

In this way, parallel processing of the same data is executed in the working RAM 32 and the data storage RAM 34, which have relatively fast processing speeds, and the array variable area of the data storage RAM 34 is initialized all at once. be converted into Furthermore, when the power of the apparatus is stopped, the processing data is stored and held in the array variable area of the data storage and holding RAM 34 backed up by the battery E. Therefore, for example, when restarting the next day, processing data representing the previous day's operating status will be read out faster than reading from a storage device using a floppy disk, causing the inconvenience of a delay in operational processing upon restart. disappears.

[0036]

As explained above, according to the control processing device of the present invention, the first and second storage elements, which have relatively high processing speeds, process the same data in parallel, and the second storage element processes the same data in parallel. The array variable area of the elements is initialized all at once,
Furthermore, when the device is powered down, for example when the device is stopped, the processed data is stored and retained in the array variable area of the second storage element that is backed up by an uninterruptible power supply, so data can be read out at high speed when the device is restarted. , it has the advantage that the operational processing is not delayed and the convenience of its use is improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a control processing device of the present invention.

FIG. 2 shows a flowchart corresponding to a program for controlling operation of simultaneous storage and readout processing in the embodiment.

[Explanation of symbols]

10 Programmable controller 20 Mini computer 24 CPU 28 System program ROM 29 User program ROM 30 Bus line 32 Working RAM 34 RAM for data storage E Battery

Claims (1)

[Claims] 1. In a control processing device that records and holds at least processed data, the processed data is stored in parallel, and the stored processed data is read out in parallel in first and second array variable areas. a memory element, and
an uninterruptible power supply that supplies power so that the second storage element continues to operate even when the power to the first storage element is stopped;
A control processing device comprising: initialization control means for initializing the processing data stored and held in the second storage element when the first storage element starts a storage operation.