JPS61210467A - Command and message control system - Google Patents

Abstract

PURPOSE:To simplify a function with respect to an input and output of a command and a message of both of a presently using and a preliminary processing devices by providing a distributing circuit and a selecting circuit in a system control device. CONSTITUTION:When a user inputs a command from a keyboard 3 of a console device 5, a distributing circuit 62 in a system control device 6 transmits an inputted command to a presently using processing device 1 and a preliminary processing device 2, respectively. The devices 1 and 2 perform respectively a processing to the transmitted command, output a message showing an execution result and transmits to the device 6. A selecting circuit 63 selects only a message transmitted from the device 1 among the messages transmitted from the devices 1 and 2 in the device 6 to transmit to the device 5. The message transmitted from the device 2 is restricted to be transmitted to the device 5. As a result, on a display 4, only a message of the output of the device 1 is displayed. Thereby, a function of both the devices is simplified and an economic character of the system can be enhanced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a duplex information processing system comprising processing devices, one of which operates as an active system and the other as a standby system, in which a Concerning improvements to the command/message control method.

In an information processing system that requires high reliability, two sets of processing devices are installed, one of which is operated as the active system and the other is kept on standby as a backup system, so that when the processing device that is currently operating as the active system fails, A so-called duplex system is widely adopted in which a standby processing unit immediately becomes the active system and starts operating.

Additionally, in an information processing system, a console is used by the operator to input various commands (hereinafter referred to as commands) to the processing device and to transmit various information output from the processing device (hereinafter referred to as message) to the operator. equipment is provided.

In this type of information processing system, commands input from the console device are reliably transmitted to the active and backup processing devices, messages output from the active processing device are reliably transmitted to the console device, and the backup system Messages output from the processing unit need to be suppressed to avoid confusion. In order to control communication between such a console device and each processing device, it is desirable to prevent the functions of each processing device from becoming complicated as much as possible.

[Conventional technology]

FIG. 2 is a diagram showing an example of a conventional command/message control method in this type of information processing system.

In FIG. 2, two sets of processing devices 1! f1 and 2 are
One (for example, processing device 1) operates as an active system, and the other (for example, processing device 2) stands by as a standby system. A console device 5 also includes a keyboard 3 for inputting commands to the processing devices 1 and 2, and a display 4 for displaying messages output from the processing devices 1 or 2.
is connected to the processing devices 1 and 2 via the system control device 6.

The system control device 6 is provided with a selection circuit 61 that selects the processing device 1 or 2 to which commands input from the keyboard 3 are transmitted. select.

In this state, when the operator inputs a command from the keyboard 3 of the console device 5, the selection circuit 61 in the system control device 6 selects the input command from the active processing device 1.
to communicate.

The processing device 1 transfers the command received by the transfer mechanism 11 to the standby processing device 2 via the information transfer device 7, and executes processing for the received command.

Note that in the active system processing device 1, since the suppression mechanism 12 has stopped functioning, a message indicating the execution result is output,
The information is transmitted to the system controller 6.

On the other hand, in the processing device 2, the transfer mechanism 21 receives the command transferred from the processing device 1 via the information transfer device 7, and executes the corresponding process.

Note that since the suppression mechanism 22 is functioning in the standby processing device, the output of the message indicating the execution result is suppressed.

The system control device 6 transmits the message transmitted from the active processing device 1 to the console device 5 and displays it on the display 4.

[Problem to be Solved by the Invention 3] As is clear from the above explanation, in the conventional command/message control system, commands input from the console device 5 are once transmitted to the active processing device 1, and then transferred to the backup system. In order to transfer the information to the system processing device 2, the processing devices 1 and 2 are provided with a transfer mechanism 11 or 21, and the system S device 6 is provided with a selection circuit 61. A transfer tube W7 is provided.

Further, in order to suppress only the active processing unit W, 1 from outputting messages to the console device 5 and the standby processing unit 2 from outputting messages, the processing units 1 and 2 are provided with a suppression mechanism 12 or 22. .

As a result, there was a fear that the economic efficiency of the information processing system would be impaired.

[Means for solving problems]

The present invention solves the above problems by taking the following measures.

That is, in the present invention, means for transmitting commands input from the console device to the active and backup processing devices is provided outside of both the processing devices.

Also, a means for selecting a message output from the active processing device among messages output from both processing devices and transmitting it to the console device, and suppressing transmission of a message output from the standby processing device to the console device. is provided outside both processing equipment.

[Effect]

That is, according to the present invention, there is no need to provide a means for transferring commands to both processing devices, and there is also no need for a means for preventing the backup processing device from outputting messages. The output function is greatly simplified, improving the economic efficiency of the information processing system.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a command/message control method according to an embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures. Also in FIG. 1, it is assumed that the processing device 1 operates as the active system and the processing device 2 operates as the standby system.

In FIG. 1, the system control device 6 receives commands input from the console device 5 and the image processing devices 1 and 2.
A distribution circuit 62 that transmits the message to the console device 5, and a selection circuit 63 that selects only the message output from the active processing device l among the messages output from the processing devices 1 and 2, and outputs it to the console device 5. It smells.

The processing devices 1 and 2 also include a transfer mechanism 11 or 21.
, and the inhibiting mechanism 12 or 22 are not provided, and furthermore, the information transfer device 7 is not provided between the image processing devices 1 and 2.

In FIG. 1, when an operator inputs a command from the keyboard 3 of the console device 5, a distribution circuit 62 in the system control device 6 transmits the input command to the processing devices 1 and 2, respectively.

Processing devices 1 and 2 each execute processing for the transmitted command, output a message indicating the execution result, and transmit the message to system control device 6, respectively. In the system control device 6, a selection circuit 63 selects one of the messages transmitted from the processing devices 1 and 2 from the active processing device l.
Messages transmitted from the standby processing device 2 are selected and transmitted to the console device 5, and messages transmitted from the standby processing device 2 are inhibited from being transmitted to the console device 5.

As a result, only the messages output from the active processing device 1 are displayed on the display 4 of the console device 5.

As is clear from the above description, according to this embodiment, commands input from the console device 5 are directly transmitted to the image processing devices 1 and 2 via the system control device 6.
Also, among the messages output from the image processing devices 1 and 2, only the message from the active processing device L is selected in the system control device 6 and transmitted to the console device 5. It is no longer necessary to provide the transfer mechanism 11 or 21 and the suppression mechanism 12 or 22 for suppressing the message output by the standby processing device 2, and the information transfer device 7 for command transfer is provided between the image processing devices 1 and 2. There will be no need for it.

Note that FIG. 1 is merely one embodiment of the present invention, and the configuration of the system control device i6, for example, is not limited to that shown in the figure, and many other modifications may be considered; The effect of the present invention does not change even in this case.

〔Effect of the invention〕

As described above, according to the present invention, in the information processing system, there is no need to provide a means for transferring commands to the image processing device, and there is also no need for a means for suppressing the output of messages by the backup system processing device. The functions of the device for inputting and outputting commands and messages are greatly simplified, improving the economic efficiency of the information processing system.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a command/message control system according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a conventional command/message control system. In the figure, ■ and 2 are processing units, 3 is a keyboard,
4 is a display, 5 is a console device, 6 is a system control device, 7 is an information transfer device, 11 and 21 are transfer mechanisms, 12 and 22 are inhibition mechanisms, 61 and 63 are selection circuits, and 62 is a distribution circuit.

Claims (1)

[Claims] In an information processing system comprising two sets of processing devices, one of which operates as an active system and the other as a standby system, and a console device that inputs commands and outputs messages to the processing devices, commands input from the console device are means for transmitting information to the two sets of processing devices;
Among the messages output from the processing units of the group, messages output from the processing unit operating as the active system are selected and transmitted to the console device, and messages output from the processing unit operating as the standby system are selected. A command/message control method characterized in that means for inhibiting transmission to the console device is provided outside of the two sets of processing devices.