JPH10271147A - Data transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate a setting change operation in simple constitution and to provide flexibility and expandability by storing a reservation set value in the second memory of a transmitter, copying the reservation set value to a first memory for storing a present set value and using it. SOLUTION: A management device 4 is connected through an interface device 40 and is provided with a processing means 4a provided with a memory 4d for performing commanding or the like to the respective transmitters connected to a bus L and receiving state data from the respective transmitters and a display means 4b for displaying the state of the respective transmitters. Data fetched to the bus L by an input means 1d are processed in the processing means la and transmitted to the bus L and the management device 4 instructs a copy command for performing setting change between the first memory 1e for storing the present set value and the second memory 1f for storing the reservation set value. By repeating a reservation setting operation, a new set value is successively reserved and setting change switching is quickly performed.

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 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 this polling method, since a master station is always required and a polling signal is always required, the apparatus is complicated, the response takes time, and the communication speed is insufficient. There is. In addition, various setting values are set in each transmission device, but in order to make this change, it is necessary to call the master station to many slave stations and reset them each time, which makes the setting change operation complicated. Met.

An object of the present invention, in view of the above, is to provide a data transmission device that can easily perform a setting change operation with a simple configuration.

[0005]

According to the present invention, there is provided a transmission apparatus connected to a bus for transmitting / receiving data, a first memory for storing a current set value and a second memory for storing a reserved set value.
A transmission device having the above memory, and a management in which the reservation setting value is stored in advance in the second memory of the transmission device, and the reservation setting value in the second memory of the transmission device is copied to the first memory for use by a copy command. And a data transmission device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) is a structural explanatory view showing one embodiment of the present invention. In FIG. 1, for example, an input device 1, an output device 2, an arithmetic device 3, etc. as transmission devices are connected to a bus L such as a common network as a transmission line. And the output device 2
, The arithmetic unit 3 and the like constitute a capturing device. 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.

[0007] For example, analog signal data such as temperature input to the input device 1 is subjected to necessary processing such as linearization and the like. Is output as

[0008] Of the data flowing on the bus L, the output device 2, the arithmetic unit 3, and the like take in necessary data. For this reason, the device numbers assigned to the output data of the input devices and the like required by the capture devices are preset as the capture numbers depending on which input device and the like of the capture device require the output data. Keep it.

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 receives the input number 1 of the data flowing through the bus L that matches the input number “01”.
Only the data with the device number “01” of No. 1 is discriminated and selected, taken in, and output to the outside after predetermined processing.

The arithmetic unit 3 inputs the input device 1 that matches the input number “01” of the data flowing through the bus L.
Only the data with the device number “01” of “1” is selected, determined and imported. Then, after performing other necessary calculations such as averaging, the unique device number “0” of the arithmetic unit 3 is added to the data.
3 "and output to the bus L.

A management device 4 for management, such as a personal computer, is connected to the bus L via a communication interface device so that various settings and settings can be made during initial startup and maintenance.
Confirmation, and also monitor the operation status of each transmission device during operation and display it on the display device as necessary,
When an abnormal device that is not operating is found, it is displayed on a display device or an external alarm is issued to take necessary measures.

That is, as shown in FIG. 1 (b), the management device 4 is connected via the interface device 40, and issues commands to each transmission device connected to the bus L, and outputs the status from each transmission device. A processing unit 4a having a memory 4d for receiving data; a display unit 4b such as a CRT or LCD for displaying the status of each transmission device and displaying the contents of device instructions; a keyboard and mouse for performing necessary operations And the like.

Further, the data fetched by the input means 1d is processed by the processing means 1a, and the data with the device number "01" set by the number setting device 1c is transferred to the bus L by the communication means 1b. , And an input device 1 as a transmission device having a first memory 1e for storing a current set value and a second memory 1f for storing a reserved set value.

That is, at the time of start-up or when necessary, an initial set value of each transmission device is set, stored in the first memory 1e, and the current set value is used. The reservation setting value is stored in advance in the second memory 1f of each transmission device by the management device 4, and the reservation setting value of the second memory 1f of each transmission device is stored in the first memory 1e by a copy command. The settings can be easily changed by copying and using them.

That is, as shown in FIG. 2, for example, the icon 41 indicating “setting” at the top of the display screen D of the display means 4b of the management device 4 is selected with the mouse or the like of the operation means 4c, and the reservation setting mode is set. And each device number “0” of the transmission device
.. Corresponding to the alarm items 42 and the like, the "execute" icon of the storage command is selected, and these reserved values are stored in the second Are transmitted to and stored in the memory 1e.

Next, as shown in FIG. 3, an icon 45 indicating “start” at the upper part of the display screen D is selected with the mouse or the like of the operating means 4c to set the start mode, and the items 46 “individual” and “ "Gr" (group) or "whole". If "Individual", individual device number 0 to be changed
A content 47 such as 1,02 is input, and when it is "group", a number 100 (device number 00-0
9) and so on, and then select the "execute" icon of the copy command. As a result, a copy command is transmitted from the management device 4 to each of the transmission devices, and in response to the copy command, the contents of the second memory 1f of each of the transmission devices are simultaneously copied to the first memory 1e. Automatically operates with the new set value of the first memory 1e.

At the time of the initial setting, the first memory 1f is empty. Therefore, the initial setting is also performed by performing the above-described setting operation of storing the set value in the second memory 1e and copying the set value to the first memory 1e. The settings are executed. Further, by repeating this reservation setting operation, new setting values can be reserved one after another.

[0019]

As described above, according to the present invention, in a transmission apparatus connected to a bus for transmitting and receiving data, a first memory for storing a current set value and a second memory for storing a reserved set value are provided. A transmission device having a reservation setting value stored in advance in a second memory of the transmission device, and a management device causing the reservation setting value of the second memory of the transmission device to be copied to the first memory for use by a copy command. This is a data transmission device provided. 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. Also, in addition to the memory for storing the current set value for each transmission device, a memory for storing the reserved set value is prepared, and the reserved set value is stored from the management device. The set value can be changed simultaneously to the current set value. That is,
For example, when the target of a batch process is changed, the preset values individually set in advance can be changed to the current values very easily and instantaneously. In addition, the setting change switching operation can be performed very easily, and the cost can be significantly reduced.

[Brief description of the drawings]

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

FIG. 2 is a configuration explanatory view showing one embodiment of the present invention.

FIG. 3 is a configuration explanatory view showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input device 2 Output device 3 Arithmetic device 4 Management device 1e, 1f Memory L bus

Claims (1)

[Claims] 1. A transmission device connected to a bus for transmitting and receiving data, comprising: a transmission device having a first memory for storing a current setting value and a second memory for storing a reservation setting value;
And a management device for storing the reservation setting value in advance in the second memory of the transmission device, and copying the reservation setting value of the second memory of the transmission device to the first memory for use by a copy command. Data transmission device.