JPH07210276A - Arithmetic unit - Google Patents

Abstract

PURPOSE:To facilitate the connection of a bus by applying a prescribed arithmetic processing to the decided data having a necessary output number among plural data and outputting the processed data to a bus together with the output number proper to a relevant device. CONSTITUTION:The data on the temperature, etc., supplied to an input device 3 from the outside undergo the necessary processings such as the linearization, etc., and then are outputted to a bus L together with a proper output number of the device 3. Meanwhile various devices are connected to the bus L and different output numbers of these devices are sent to the data on the bus L. Then the data flowing on the bus L are fetched by the arithmetic units 1 and 2 and an output device 4. Thus the device 4 decides and selects only the data that has the output number of the device 3 coincident with the corresponding fetched number. Then the device 4 can output the selected data to the outside. Thus only a single common bus L suffices and complicated wiring is needed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arithmetic unit used by connecting to a bus.

[0002]

2. Description of the Related Art As a device used in process control or the like, there is an arithmetic unit for performing various arithmetic operations. This has various arithmetic functions such as integrating and averaging the collected process data such as temperature.

[0003]

This arithmetic unit is used, for example, for inputting and outputting again the output of a data input device, a controller or the like, and there is a problem that wiring is complicated. Also, using a transmission line, the slave station sends data to the master station in response to a polling signal from the master station,
There is also a method of collecting and calculating data. However, this requires a main station and requires a polling signal, so that the device is complicated, it takes time to respond, and the communication speed is insufficient.

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide an arithmetic unit having a simple structure and easily connected to a bus.

[0005]

According to the present invention, there is provided a discriminating means for discriminating and fetching data having a required output number out of data flowing through a bus, and a predetermined data for the data fetched by the discriminating means. Processing means for performing the arithmetic processing of
An arithmetic unit is provided with an output unit for outputting the data of the processing unit to the bus with a unique output number of the unit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

In the figure, a bus L such as a common network as a transmission line is connected to, for example, an arithmetic unit 1,
2, an input device 3, an output device 4, etc. are connected.

The data such as the temperature input from the outside to the input device 3 is output to the bus L with a unique output number of the input device 3 after being subjected to necessary processing such as linearization. . Various devices are connected to the bus L, and different output numbers are given to the respective data to flow on the bus L.

Then, the arithmetic units 1 and 2 and the output unit 4 take in the data flowing through the bus L in this way. When the arithmetic unit 1 and the output unit 4 want to capture the data of the input unit 3, the capture numbers of the arithmetic unit 1 and the output unit 4 are set to be the same as the output numbers of the input unit 1.

As a result, the output device 4 discriminates and selects only the data having the output number of the input device 3 which matches the fetched number and outputs the data to the outside.

Further, the arithmetic unit 1 discriminates, selects and fetches only the data having the output number of the input unit 1 which coincides with the fetch number among the data flowing through the bus L. Then, after performing necessary averaging and other arithmetic processing, the output number unique to the arithmetic unit 1 is added to the data and output to the bus L.

Then, by setting the output number of the arithmetic unit 1 as the acquisition number of the arithmetic unit 2, the output data of the arithmetic unit 1 is taken in by the arithmetic unit 2. Then, the arithmetic unit 2 performs a predetermined arithmetic processing again, and outputs the data with a unique output number of the arithmetic unit 2 to the bus L, so that the data can be used by other devices in the same manner and multi-stage arithmetic is performed. Will also be easier.

As described above, the arithmetic units 1 and 2 discriminate and take in the data having the required output number among the data flowing on the bus L, and perform the predetermined arithmetic processing,
Again, different output numbers unique to the arithmetic units 1 and 2 are attached to the data and output to the bus L.

The data flowing through the bus L has an output number "0".
5-01 ”,“ 06-02 ”, etc., and the output data is“ 3
Assuming "00 ° C" and "400 ° C", the following is obtained.

05-01 300 ° C. 06-02 400 ° C. Further, since one output number of a certain device can be set as the taking-in numbers of a plurality of arithmetic units, the same input multi-computation output is possible at the same time. Further, by providing a plurality of acquisition numbers and output numbers for one arithmetic unit, it is possible to make a multi-input and multi-output device. Of course, the number of inputs and outputs of one arithmetic unit may be different from each other, and one input multiple output and multiple input one output are also possible.

Next, FIG. 2 shows a slightly detailed configuration explanatory diagram. For example, the arithmetic unit 1 has two inputs and two outputs, and the number setters 12 and 13 set the capture numbers to be captured.
Then, among the data flowing on the bus L, only the data having the output number corresponding to the capture number is discriminated by the discriminating means 11, selected and captured. And the processing means 1
Perform the required predetermined arithmetic processing in step 4, and then restart the number setter 1
At 6 and 17, each output number is attached to each processed data and output to the bus L by the output means 15.

In this case, one arithmetic unit may have any number of acquisition numbers and any number of output numbers. It is also possible to perform a required operation for a plurality of inputs and output one output, or to perform a different processing on a certain input to make a plurality of outputs, and a composite input and a composite output are possible. Various operations can be constructed.

[0018]

As described above, the present invention is an arithmetic unit which takes in data of a required number flowing through the bus, processes it, and outputs the data to the bus again.
Therefore, only one common bus is required, no complicated wiring is required, and no main master station is required. Various types of arithmetic units can be combined to easily and arbitrarily set any arithmetic system. Moreover, it can be configured flexibly and is highly flexible and expandable. Further, since the number of inputs and outputs of the arithmetic device can be arbitrary, it is possible to
It is possible to obtain a composite output, and by using a common capture number, it is possible to perform multiple operations for one input at the same time. In this way, bus connection is easy and various applications can be performed.
It is possible to obtain an arithmetic unit that is extremely effective and efficient.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention.

FIG. 2 is a structural explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

 1, 2 Arithmetic device 3 input device 4 output device L bus

Claims (1)

[Claims] 1. A discriminating means for discriminating and fetching data to which a required output number is attached among data flowing through a bus, and a processing means for performing a predetermined arithmetic processing on the data fetched by this discriminating means. An arithmetic unit comprising: output means for outputting data to the processing means to a bus by adding a unique output number of the equipment.