JPH04170296A - Receiver for control system - Google Patents

Abstract

PURPOSE:To suppress traffic of communication line low by making a receiver of the control system inform various information of devices to a specific controller corresponding to kinds of the information. CONSTITUTION:A notice means is formed such that various information of equipments such as control information representing on/off state of each equipment, fault information representing the fault state of each equipment, and setting information representing combination or the like of on/off equipment is informed to a specific controller depending on the kind of the information. That is, a receiver 2 informs control information to a gateway device 3a and an operation device 3c, informs fault information to a controller 3b and the gateway device 3a, and informs setting information to the operation device 3c, and the controller 3b. Thus, the traffic of the communication line is suppressed low and the communication efficiency is improved.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a receiver for a control system that receives control commands from a control device via a signal line and controls equipment.
In particular, it concerns the means of reporting.

(Prior art) Conventionally, as this type of receiver, for example,
There is one described in Japanese Patent No. 105552.

FIG. 3 is a block diagram of a control system including the receiver, and FIG. 4 is a sequence diagram showing the operation of the receiver.

In Fig. 3, 1 is a communication line, 31 to 35 are control devices (
9 to 13 are controlled devices connected to each control device. Each control device includes response means 31a to 35a for transmitting a response signal A, and an operation switch 3.
6 to 40 and display means 47 to 51.

In this control system, for example, the control device 31
A case will be described in which the controlled device 13 connected to the control device 3.5 is controlled.

First, the operation switch 36 of the control device 31 is operated. Then, the transmission frame F from the control device 31 is received by the control device 35 as the destination. The control device 35 controls the controlled device 13 based on the transmission frame F. Thereafter, the control device 35 sends a response signal to all other control devices 31, 32, 33.
Send. The control device 3 that received the response signal A
1; 32, 33, and 34 display the status of the device 13 on the display means 47, 48, and 49, 50 based on the response signal A.

[Problem to be solved by the invention]

As mentioned above, once a conventional receiver performs control, it notifies all control devices.

Therefore, there is a problem in that the traffic on the communication line becomes extremely high.

This invention was made in view of these circumstances,
It is an object of the present invention to provide a receiver that can suppress communication line traffic in this type of control system.

Means for Solving Problem 6) In the present invention, in order to achieve the above object, the receiver of the control system is configured as shown in (1) below.

(1) A receiver that is connected to a plurality of control devices via signal lines and that controls devices by receiving control commands from any one of the plurality of control devices, and which controls various types of devices. A receiver for a control system comprising reporting means for reporting information to a specific device among the plurality of control devices according to the type of the information.

[Effect]

With the configuration (1) above, the receiver of the control system reports various information about the equipment to a specific control device according to the type of information.

〔Example〕

The present invention will be explained in detail below with reference to Examples.

FIG. 1 is a block diagram of a control system including a receiver part of a control system according to an embodiment of the present invention, and FIG. 2 is a sequence diagram showing the operation of the receiver.

In FIG. 1, 1 is a communication line, 2 is a receiver (also referred to as a terminal), and 3a, 3b, and 3c are control devices. A controlled device (not shown) is connected to the receiver 2 . Among the plurality of control devices 3a, 3b, and 3c, 3a is a gateway device that connects the communication line 1 to which the receiver 2 is connected to another communication line 4, and 3b is a gateway device that connects the communication line 1 connected to the receiver 2 to another communication line 4. 3C is a controller that controls the equipment, and 3C is an operating device that includes a keyboard and the like and operates the equipment.

In this embodiment, various information about devices, such as whether each device is turned on,
The reporting means is configured to report control information indicating an off state, abnormality information indicating an abnormal state of a device, setting information indicating a combination of devices to be turned on or off, etc. to a specific control device according to the type of information. It consists of

That is, as shown in FIG. 2, the receiver 2 sends control information to the gateway device 3a and the controller 3c.
(see ■), abnormality information to the controller 3b and gateway device 3a (see ■, ■), and setting information to the controller 3b and gateway device 3a.
c. Notify the controller 3b (see ■, ■).

Since the present embodiment operates as described above, the traffic on the communication line 1 is reduced.

〔Effect of the invention〕

As described above, according to the present invention, traffic on communication lines can be kept low and communication efficiency can be increased.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a control system including a "°control system receiver" which is an embodiment of the present invention, Fig. 2 is a sequence diagram showing the operation of the same embodiment, and Fig. 3 is a conventional receiver. FIG. 4 is a sequence diagram showing the operation of the receiver shown in FIG. 3. In the figure, 1 is a signal line, 2 is a receiver, and 3a. 3b and 3c are control devices.

Claims (1)

[Claims] (1) A receiver that is connected to a plurality of control devices via signal lines and that controls devices by receiving control commands from any one of the plurality of control devices, and which controls various types of devices. A receiver for a control system, comprising a reporting means for reporting information to a specific device among the plurality of control devices depending on the type of the information.