JPH07219882A - Transmitting device - Google Patents

Abstract

PURPOSE:To flexibly and efficiently transmit data by simple configuration. CONSTITUTION:A number required by a bus number setting equipment 1A, a device number setting equipment 1B and a data number setting equipment 1C is given to data so as to be outputted to a bus L1. A fetching means 11 fetches data with the number set by a fetching number setting equipment 1D from the bus L1. Thus, the number is utilized so as to execute interdevice transmission through the bus L1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for transmitting data such as a process amount.

[0002]

2. Description of the Related Art Conventionally, there is one that transmits process data such as temperature collected by a data transmission device as a slave station to a master station through a transmission line in response to a polling signal from the master station.

[0003]

However, such polling method transmission always requires a master station,
Moreover, since the polling signal is always required, the device is complicated, the response takes time, and the communication speed is not sufficient.

In view of the above points, an object of the present invention is to provide a transmission device having a simple structure and capable of performing data transmission flexibly and efficiently.

[0005]

According to the present invention, at least one of a device number setting device for setting a device number indicating itself or a data number setting device for setting a data number is provided and is output to a bus. Data to be transmitted to the bus by attaching at least one of the device number or the data number to the data to be transmitted, or the device number or the data number of the data that needs to be captured among the data flowing on the bus. It is a transmission device that is equipped with a capture number setting device for setting at least one of these numbers and that captures the data with the required number from the bus.

[0006]

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

In the figure, for example, an arithmetic unit 1, an input unit 2, an output unit 3, etc. are connected to a common bus L1 such as a network as a local transmission line, and a bus connecting unit 4 is connected to this bus L1. Connected. A bus LO as another system-like transmission line is connected to the bus connection device 4. Another bus connection device 5 or the like is connected to this bus LO, and this connection device 5 also has a bus L2.
Is connected, and a device similar to the bus L1 is connected.

Considering the bus L1, the data such as the temperature input to the input device 2 is subjected to necessary processing such as linearization, and then, the device number and the data unique to the input device 2 are shown. It is output to the bus L1 with an output number such as a number.

The output device 3 sets the device number and the data number of the data to be fetched as the fetch number, and fetches the data to which the set number is attached from the data flowing through the bus L1. Output to.

The arithmetic unit 1 takes in the data matching the take-in number of the data flowing on the bus L1 as in the output unit 3. Then, necessary calculation is performed, and like the input device 2, the output number peculiar to the arithmetic device 1 is added to the data and output to the bus L1.

The bus connection device 4 outputs only the data having a predetermined number set in advance out of the data flowing on the bus L1 to the bus LO, or outputs the predetermined number set in advance from the bus LO. The captured data is fetched and output to the bus L1. When outputting data to the bus LO, the bus number is attached. The bus connection device 5 has the same configuration.

If a bus number is set for each of the devices 1, 2, and 3, the same number may be given on the same bus. Further, if the device of the bus L1 is given the bus number of the bus L2 and is passed by the bus connecting devices 4 and 5, the data of the bus L1 flowing on the bus L2 is treated as the data on the bus L2. .

As described above, the data flowing on the bus L1 has, for example, the bus number "01" and the device number "0".
5 ”, the data number is“ 02 ”, and the data is“ 300 ° C. ”, the result is as follows.

01 05-02 300 ° C. The bus number may be set to “00” or may be omitted when flowing on the same bus L1. The data number is
It can be omitted when the device handles only one data. Further, when the device number is unnecessary and only the data number is required, only the data number can be used. For example, if the device number is used, the above data will be as follows.

05 300 ° C. Next, the arithmetic unit 1 will be described as an example with reference to the slightly detailed configuration explanatory view of FIG. In the figure, the bus L1 is
The terminal 14 for input and output to the bus is connected, and this terminal 1
The data having the capture number preset by the capture number setting unit 1D is captured by the capture means 11 via the data acquisition unit 4. This data is subjected to a predetermined arithmetic processing by the processing means 12, the required bus number is set by the bus number setter 1A by the output means 13, the required device number is set by the device number setter 1B, and the data number is set. Set the required data numbers with the setting device 1C, attach these number data, and
Output to the bus L1. These numbers are usually unique to the device 1. Further, if necessary, the processing means 12 may input or output a signal to the outside through the terminal 15.

The capture number setter 1D is usually provided with a device number setter and a data number setter for setting a device number or a data number as a capture number to be taken in. That is, as the output number given to the data outputted from each device, a device having both the device number and the data number is usually used.

FIG. 3 is an example of a configuration explanatory view showing the appearance of the arithmetic unit 1 from the front. For example, at the top of the bus L
A terminal 14 for inputting and outputting 1 data is provided, and a bus L1 as a signal is connected to the terminal screws T1, T2, T3, and T4. In addition, a terminal 15 for inputting and outputting a signal to and from the outside is provided on the lower part as necessary,
Similarly, terminal screws T5, T6, T7, and T8 are used to input and output signals with the outside.

Then, in the middle part, a bus number setting device 1A for setting a bus number for this device 1, a device number setting device 1B for setting a device number, a data number setting device 1C for setting a data number, and a take-in number. A capture number setter 1D including a device number setter 1DB and a data number setter 1DC for setting the number is provided. These setting devices operate the knobs to set the numbers, but they may be rotary type number setting devices or any other structure. Further, only the setting device and the like necessary for the device may be provided.

It should be noted that the above-mentioned numbers include symbols.

[0020]

As described above, the present invention is a transmission device in which a device connected to a bus is given a necessary device number to exchange data. Therefore, by connecting each device to the bus and making the required settings, the main master station is not required, the communication speed can be increased, and data transmission can be performed flexibly and efficiently with a simple configuration. It is possible to flexibly configure various systems. In addition, although each device is distributed and independent, it is possible to transmit arbitrary data to each other simply by setting a number.
It can be connected organically, and it is easy to add and change the device, and it is highly expandable, and can be used for various instrumentation in various ways.

[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.

FIG. 3 is a structural explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 arithmetic unit 2 input device 3 output device 4, 5 bus connection device 11 importing means 12 processing means 13 output means 1A bus number setting device 1B device number setting device 1C data number setting device 1D acquisition number setting device

Claims (2)

[Claims] 1. A device number setting device for setting a device number indicating itself or a data number setting device for setting a data number, and at least one setting device is provided, and the device number or data is to be output to a bus. A transmission device, characterized in that at least one of the numbers is added and output to a bus. 2. A capture number setting device for setting at least one of a device number or a data number of data that needs to be captured among data flowing on a bus,
A transmission device characterized in that it takes in the required numbered data from a bus.