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Control apparatus with fast i/o function, and control method for control data thereof

A technology for outputting data and inputting data, which is applied to the control field of control equipment with fast input/output function and its control data, and can solve the problem that writing cannot be omitted.

Inactive Publication Date: 2008-02-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that such an operation cannot omit unnecessary writes

Method used

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  • Control apparatus with fast i/o function, and control method for control data thereof
  • Control apparatus with fast i/o function, and control method for control data thereof
  • Control apparatus with fast i/o function, and control method for control data thereof

Examples

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Effect test

no. 1 example

[0036] A first embodiment of the present invention will now be described with reference to FIGS. 3 to 5 . FIG. 3 is a configuration diagram of a control device with a fast I / O function according to the present invention.

[0037]In FIG. 1, a control device 1 includes: a control program execution part 1a; an I / O data interface part 1b for transmitting from / to an I / O device 2 input data from an object to be controlled and user data such as to an actuator. output signal to operate the object to be controlled; and a system bus 19 for interconnection between the control program execution unit 1a and the I / O data interface unit 1b.

[0038] The control program executing part 1a is configured to have: a control program executing circuit 14 for executing control operations of the control device 1; a control program memory 15 for storing a control program to be executed; a control data memory 16 for temporarily storing data from I / O device 2 for input data, and output data, and for st...

no. 2 example

[0051] A second embodiment of the present invention will now be described with reference to FIGS. 6 to 11 . In the second embodiment, the same components as in the control device 1 of the first embodiment are denoted by the same reference numerals and will not be repeated.

[0052] In the first embodiment, among the control data related to the execution of the control program execution circuit 14, for all the operands involved in reading and writing to the control data memory 16, only in the case where data consistency occurs before and after the operation, Just omit writing. In the second embodiment, the transfer from the control data memory 16 to the I / O data interface part 1b and the I / O device 2 is controlled by further passing the consistency signal between the control data before and after the operation, so that only the output The part where the data changes, so the transmission time of the output data can be shortened.

[0053] Fig. 6 shows the configuration of the s...

no. 3 example

[0075] A third embodiment of the present invention will now be described with reference to FIGS. 12 to 14 . In the third embodiment, the same components as those in the control device 1 of the first embodiment shown in FIGS. 3 to 5 are denoted by the same reference numerals and will not be repeated.

[0076] In the second embodiment, whether there is consistency between the operand before the operation of the instruction sequence and the data after the operation is detected to control the flow of data from the control data memory 16 to the I / O data interface part 1b and the I / O device 2 Transmission, and only the changed part of the output data is transmitted, which can shorten the transmission time of the output data. In the third embodiment, comparing the input data of the previous time and the input data of this time, among all the input data to be transmitted from the I / O control circuit 20 to the control data memory 16 shown by the solid line in FIG. 7, only the transmiss...

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Abstract

A control apparatus with a fast I / O function is adapted for storage of a control program, and to input a status of a target to be controlled as an input data from an I / O device, follow the control program to execute an operation of the input data, and output to the I / O device a result of the operation as an output data for controlling the target to be controlled, and includes a batch I / O buffer memory 201 having an output data register for storing an output data of the I / O device, and a batch I / O buffer memory controller 203 for controlling a writing of output data to be written to the batch I / O buffer memory 201, the batch I / O buffer memory controller 203 being adapted to control the writing of output data to the batch I / O buffer memory in accordance with a comparison output of control data of a control program executing circuit 14.

Description

technical field [0001] The present invention relates to a control device that can be widely used in steel mills and paper mills, as well as control of industrial systems such as the automobile industry and public systems including water supply and drainage systems. Background technique [0002] FIG. 1 shows the structure of a conventional control device 100 . In the control device 100, the control program execution circuit 114 is used to process input data from a plurality of I / O (input / output) devices 200, which are input into the control data memory 116 through the I / O interface 117 and the system bus 119 In the input registers of , wherein the input data is used for the execution of the control program stored in the control program memory 115 to be executed in the control program execution circuit 114, the operation result thereof is written to an output register not shown in the control data memory 116 middle. [0003] Figure 2 shows the relevant data flow. For this r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/054G05B2219/1153G05B2219/1149G05B19/02
Inventor 芦田和英
Owner KK TOSHIBA
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