JPH09294134A - Data transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the configuration and to easily grasp processing information of the transmitter by sending a device number and a content of processing information to a bus so as to allow a management device to receive them. SOLUTION: A device number specific to an input device 1 is added to analog signal data received by the device 1 and the resulting data are sent to a bus L. On the occurrence of a fault in the device 1, for example, the device 1 sends alarm information including its own device number, an alarm code and an alarm message to the bus L. Then a management device receives the alarm information as to the device number to grasp transmission of the occurrence of the fault alarm of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transmitting treatment information in an apparatus for transmitting data such as a process amount.

[0002]

2. Description of the Related Art Conventionally, as a data transmission method, process data such as temperature collected by a slave station is transmitted by a slave station to a master station via a transmission line in response to a polling signal from the master station. There is a polling method in which after the processing, a polling signal is transmitted to another slave station again.

[0003]

However, in the polling method, the master station is always required and the polling signal is always required, so that the apparatus is complicated, the response takes time, and the communication speed is insufficient. is there.

Further, when many devices are connected to the transmission line, if each device becomes abnormal, each device becomes abnormal.
In many cases, the presence or absence of an alarm is transmitted as a code, and the details of the diagnosis and the details of the treatment are unknown.

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to provide a data transmission device having a simple structure and capable of transmitting treatment information of a device connected to a bus and easily knowing this.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a management device for transmitting a device number and a treatment information request code to a transmission device connected to the bus, and a device number and a treatment information request code of the device flowing through the bus. And a transmission device adapted to receive the device number and the contents of the treatment information on the bus and to be taken in by the management device.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the present invention. In FIG. 1, for example, an input device 1, an output device 2, an arithmetic device 3, and the like as a transmission device are connected to a bus L such as a common network as a transmission line. The output device 2,..., The arithmetic device 3,. Each of these devices is assigned a device number unique to the device, and data and the like can be transmitted using this device number.

The analog signal data such as temperature input to the input device 1 is subjected to necessary processing such as linearization and the like, and is given a unique device number of the input device 1 and output to the bus L as output data. Is output.

Of the data flowing on the bus L in this way, the output device 2 and the arithmetic device 3 take in the necessary data. For this reason, these capture devices include:
A device number assigned to output data of an input device or the like required by the capture device is set in advance as a capture number depending on which input device or the like needs output data.

For example, assuming that the data of the input device 1 is fetched by the output device 2 and the arithmetic device 3, the output device 2 and the arithmetic device 3 take the same number as the device number "01" of the input device 1 and obtain the input number " 01 ".

The output device 2 matches the input number “01” of the data flowing through the bus L and corresponds to the input device 1.
Only the data with the device number "01" is discriminated and selected, taken in, and output to the outside after predetermined processing.

Further, the arithmetic unit 3 outputs the input device 1 corresponding to the acquisition number “01” of the data flowing through the bus L.
Only the data with the device number “01” is selected, determined and imported. Then, after performing other necessary calculations such as averaging, the unique device number “03” of the arithmetic unit 3 is added to the data.
And output to the bus L.

By the way, it is assumed that an abnormality occurs in the input device 1. Then, the input device 1 determines its own device number “01”,
Warning code "A", warning message "CJ ALARM"
The following alarm information including the following is transmitted to the bus L.

01 ACJ ALARM Then, the management device 4 receives and takes in the above-mentioned alarm information about the device number "01", recognizes that some abnormal alarm of the device has been issued, and displays it on the display means. However, humans can grasp the contents.

However, with only the warning message such as "CJ ALARM", the meaning and the contents of the action to be taken are unclear, and quick response is difficult. Therefore, the management apparatus collects the treatment information from each transmission apparatus in advance as follows.

That is, for example, in the management device 4, the device number "01" and the treatment information request code "SD" of the following transmission device for making a treatment request to the transmission device connected to the bus L are given. Is transmitted to the bus L.

SD 01 Then, the input device 1 as a transmission device having the corresponding device number “01” receives this treatment information request code “SD” and its own device number “01”, and the treatment information request is sent to itself. When it is determined that there is, the action information indicating the action content for the diagnostic content such as the response code “SDA”, the self device number “01”, and the alarm message is transmitted to the bus L.

SEA01; CJ ALARM: The cold junction compensator is abnormal. Please replace it.

In other words, here, the alarm message "CJ is abnormal. The cold junction compensator is abnormal. Please replace it." Is the diagnostic information.
It is the treatment information indicating the treatment contents for “ALARM”.

Then, the management device 4 receives this device number "0.
It is possible to capture the above-mentioned treatment information for "1" and grasp the entire contents of the treatment information for the diagnostic information possessed by the device.

Then, in the same manner, the management device 4
The device numbers “02”, “03”, etc. for each transmission device and the treatment information request code “SD” are transmitted to the bus L, and the treatment information of each transmission device 2, 3 ... It is possible to recognize all the contents by receiving the information, and to easily know what kind of diagnostic information and treatment information each transmission device has. Then, the operation means can be operated to cause the display means to display the contents of the alarm diagnosis and treatment of the transmission device, and in the event of an abnormality, the treatment information can be displayed together with the diagnosis of the alarm message so that the operator can recognize it, and the treatment can be immediately performed.

[0022]

As described above, according to the present invention, the management device for transmitting the device number and the treatment information request code to the transmission device connected to the bus, the own device number and the treatment information flowing through the bus. A data transmission device comprising a transmission device which receives a request code, transmits its own device number and the contents of treatment information to a bus, and causes the management device to capture the same. For this reason, the main station is not required, and the communication speed can be made sufficiently high. From the configuration consisting of a minimum of two devices and a bus, tens or hundreds or more of data and devices can be combined as far as the numbers permit. Can be easily, arbitrarily, and flexibly configured, and can easily and sufficiently cope with various systems, which is rich in flexibility and expandability, and effectively and efficiently. In the management device,
It is possible to easily collect and grasp the contents of the treatment information about the diagnostic information such as the alarm message held by each transmission device connected to the bus all at once, and what kind of transmission device each It is possible to know what kind of action should be taken from the alarm diagnosis content, and the operator can recognize it by displaying it. Then, at the time of abnormality, the treatment information is displayed together with the alarm message so that the operator can recognize the treatment information and the treatment can be immediately executed. In other words, even if the management device does not know the content of the alarm message and its treatment information in advance, it does not need to build the settings of the alarm content or the treatment content in advance, no instruction manual is required, and the contents of all treatments are automatically calculated. The system is highly user-friendly, easy for anyone to use, flexible, flexible, and highly reliable.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view showing one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 input device 2 output device 3 arithmetic device 4 management device L bus

Claims (2)

[Claims] 1. A management device for transmitting a device number and a treatment information request code to a transmission device connected to a bus,
A data transmission comprising a transmission device adapted to receive its own device number and treatment information request code flowing on the bus, transmit the own device number and treatment information contents to the bus, and allow the management device to take them in. apparatus. 2. The treatment information is treatment information for diagnostic information such as an alarm message.
A data transmission device according to claim 1.