JPH04182802A - Control system - Google Patents

Abstract

PURPOSE:To enable short-period control even when there are many parts to be controlled by providing a control part with a register where instruction information to be given to the respective parts to be controlled is written on an individual line basis, reading and processing pieces of state information on the parts to be controlled at a time, and writing the instruction information. CONSTITUTION:Pieces of the state information are transferred individually from the parts 1-4 to be controlled to the bit groups 1-1, 2-1, 3-1, and 4-2 of the register 11 corresponding to the parts 1-4 to be controlled. In the processing of the data processing means 12 of the control part 10, the pieces of information are read out of the bit groups 1-1, 2-1, 3-1, and 4-1 of the register 11 at a time and processed at a time to find instructions to be given to the respective parts 1-4 to be controlled, and they are written in the respective groups of the register 1 at a time. Consequently, the parts 1-4 to be controlled reads the instructions out of the corresponding bit groups of the register 11 and performs as indicated. Thus, the batch input/output processing of the register 11 is performed to shorten the period of the control.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a control system in which a control unit performs feedback control by reading status information of a plurality of controlled units and giving instructions to the controlled units. For the purpose of providing a control system capable of controlling a plurality of controlled parts, a register is provided at a position corresponding to each controlled part of the plurality of controlled parts to read out state information of each controlled part and write instruction information to be given to each controlled part. The control unit is provided with an individual line system in the control unit, and the control unit reads the status information of the plurality of controlled units at once by reading the register, processes them at once to obtain instruction information, and reads the status information of the plurality of controlled units at once. The configuration includes data processing means for writing instruction information given to the control section into the register.

[Industrial application field]

The present invention relates to an improvement in a control system in which a control unit performs feedback control by reading status information of a plurality of controlled units and giving instructions.

[Conventional technology]

FIG. 4 is a block diagram of a conventional control system, and FIG. 5 is a flowchart of a data processing program in the case of FIG.

In FIG. 4, registers 21, 22, 23, and 24 for reading out the state information of the controlled parts 1', 2', 3°, and 4° and writing instruction information from the control part lO' are in the form of a bus. The microprocessor 13 of the control section 10' performs feedback processing using a data processing program shown in FIG.

That is, in step 1 of FIG. 5, the status information of the register 21 is read, and in step 2, the state information of the microprocessor 13 is read.
performs data processing to obtain necessary instructions, and writes the instructions to the register 21 in step 3.

As shown in FIG. 5, the same process as described above is repeated in order for the controlled units 2', 3', and 4'.

Then, the controlled units 1', 2', 3', 4' read the instructions written in the registers 21, 2.2, 23.24 and operate according to the instructions.

[Problem to be solved by the invention]

Generally, the time required for input/output processing with external memory, Ilo, etc., such as input/output processing with registers 21, 22, 23, and 24, is longer than the time required for data processing by a microprocessor.

Therefore, in conventional control systems, the more controlled parts there are, the more
Since the controlled part can only be controlled in short cycles, it is not possible to give instructions in accordance with the constantly changing state of the clock, resulting in a problem that the control becomes lacking.

An object of the present invention is to provide a control system that can control a controlled part in a short cycle at most.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

As shown in FIG. 1(A), the kindergarten system unit IO has a plurality of controlled units 1. 2. 3. In a control system that performs feedback control by reading state information of 1.4 and giving an instruction, the plurality of controlled units 1. 2. 3. A register 11 for reading status information of each controlled section and writing instruction information to be given to each controlled section is provided in the control section 10 using an individual line system at a position corresponding to each controlled section of 4. By reading the register 11, the plurality of controlled units 1. 2. 3. A data processing means 12 is provided which reads the status information of 4 at once, processes it at once to obtain instruction information, and writes the instruction information given to each controlled section into the register 11.

[For production]

According to the present invention, each controlled portion 1゜2 of the register 11,
3. Each controlled unit 1.2-1.3-1.4-1 is connected to a bit group 1-1.2-1.3-1.4-1 consisting of one or more bits at four corresponding positions.
2. 3. The transfer of state information from No. 4 is performed individually.

The processing by the data processing means 12 of the control unit 10 is performed on the pit group 1-1.2 of the register 11, as shown in FIG. 1(B).
-1.3-1.4-1, the status information is read in batch, processed in batch, and each controlled unit 1. 2. 3.
4, and all bits 1-1 . 2--1°3-1.Write in 4-1.

Then, the controlled unit 1. 2. 3. 4 is register ll
Bit group 1-1. 2-1. 3-1. The instruction is read from 4-1 and the operation is performed according to the instruction.

That is, register 1-1. 2-1. 3-1. 4-1
Since the input/output processing for the registers 11 is performed all at once, the input/output processing time is significantly reduced.
The control cycle can be shortened, and instructions can be given that correspond to the constantly changing conditions.

〔Example〕

FIG. 2 is a diagram showing a control system according to an embodiment of the present invention, and FIG.
The figure shows an example of a conversion table.

In FIG. 2, the controlled parts are 1. 2. 3. 4 pieces,
Each controlled unit 1. 2. 3. Bit group 1-1.4 for reading status information or writing instruction information. 2-1゜3
-1.4-1 is provided in the control unit 10 by an individual wiring method as a register 11, and each controlled unit 1. 2
．． 3. The status information of 4 consists of 2 bits, and the instruction information also consists of 2 bits, and the microprocessor 13 in the control unit 10
is an example of 8-bit processing.

In addition, a conversion table as shown in FIG. 3 is used to read the status information all at once and process it all at once to obtain instruction information.

The status information from each controlled unit 1 to 4 is the bit group 1-1.2-1゜3-1.4-1 of the register 11 in the control unit IO.
is written in an 8-pit configuration as shown in FIG. 2(A).

Then, the microprocessor 13 reads it as one byte in step 1 of the data processing program shown in FIG. 2(C), and reads it as 1 byte in step 2. In step 3, the conversion table shown in FIG.
Write as shown in FIG. 2(B).

Here, the conversion table will be explained using FIG. 3.

Since the status information and instruction information are 8 bits, there are 256 combinations. Therefore, a 256-byte area is prepared on the memory, and the address of the conversion table is, for example, 1.
“ooooooooo”~“ of the bottom 8 people within 2 pits
11111111" consecutive values, and each address is 2
Instruction information corresponding to each state information is written in each address column in correspondence with 56 types of state information.

For example, bit group 1-1.2-1.3- of register 11
1.4-1 When the status information written in the 8-pit configuration as shown in FIG. 2(A) is "00000001", the instruction information to be written as shown in FIG. 2(B) is "10101".
010”, the address “000” is shown in Figure 3.
Write "10101010" in the column of "00001".

In this way, after the microprocessor 13 reads the register 11, it only needs to obtain the instruction information from the address column of the same conversion table as the read data and write it to the register 11.

Note that the above conversion table is convenient if the status information and instruction information are 8 bits and the microprocessor 13 also processes 8 bits, but this may not be the case. It is better to adopt the method of calculating the instruction information using

In any case, bit group 1-1゜2-1 of register 11
．． When instruction information is written in 3-1.4-1 as shown in FIG. 2(B), the controlled parts 1 and 2.3.4 read this and operate according to the instruction.

In this way, the bit group 1-1.2-1°3-1.
The input/output processing for the register 11 consisting of 4-1 is performed all at once, and the input/output processing time is significantly shortened.
The control cycle can be shortened, and instructions can be given that correspond to constantly changing conditions.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the input/output processing for the registers in which status information and instruction information are written is performed all at once, and the input/output processing time is significantly shortened.
This has the effect of shortening the control cycle and allowing instructions to be given in response to constantly changing conditions.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the principle of the present invention, Fig. 2 is a diagram showing a control system of an embodiment of the present invention, and Fig. 3 is a diagram showing the control system of an embodiment of the present invention.
4 is a block diagram of a conventional control system, and FIG. 5 is a flowchart of a data processing program in the case of FIG. 4. In the figure, 1 to 4. 1-4' are controlled parts, 1-1. 2-1. 3-1. 4-1 is Bi-Soto group,
11.21 to 24 are registers, 10.10' is a control unit, 12 is a data processing means, and 13 is a microprocessor. Inventive tiger 11I! Figure 1 Memory Attos Memory I 1 status card 3) Control system block diagram 4
−[21

Claims (1)

[Claims] The control unit (10) includes a plurality of controlled units (1, 2, 3, 4).
In a control system that performs feedback control by reading the state information of and giving an instruction, the state information of each controlled part is stored in the position corresponding to each controlled part of the plurality of controlled parts (1, 2, 3, 4). The control unit (10) is provided with a register (11) for writing instruction information to be given to each controlled unit using an individual line method. Data that reads the status information of the plurality of controlled units (1, 2, 3, 4) at once, processes them at once to obtain instruction information, and writes the instruction information given to each controlled unit into the register (11). A control system characterized by having a processing means (12).