JPS61223969A - Output message management method in decentralized processing system - Google Patents

Abstract

PURPOSE:To relieve the load of change by allowing a host processor to manage an output message of each processor and sending a corresponding message in response to a request code from each processor so as to reduce the message storage capacity. CONSTITUTION:The host processor 1 has a message table 6a storing a message M to be sent by an output request code C from plural decentralized processors 2a-2d connected by a data transmitter 3 on a storage device 6. The message output request code C sent by each processor is sent to the host processor 1 through a transmission line 3 in response to an event generated on the decentralized processors 2a-2d, the host processor 1 retrieves a message table 6a on the storage device 6 and the corresponding message is sent to a processor raising the said request through the line 3.

Description

[Detailed description of the invention] [Technical field of invention] The present invention includes multiple computers and controllers.

This invention relates to an output message management method in a distributed processing system consisting of terminal devices and the like.

[Technical background of the invention and its problems]

Conventionally, in a distributed processing system consisting of multiple computers and controllers, the functions of the system are divided among each processor, and each processor independently outputs messages in response to events and abnormal conditions that occur during the processing process. A method is used in which each processor stores the data and format of the messages it outputs. In this case, each processor should be equipped with a sufficiently large memory capacity and the ability to generate, change, and save output messages, but in many cases, the capacity is small except for the host processor, so the number of output messages stored is small. There are usually limitations on volumes and maintenance capabilities. Furthermore, even if each processor has sufficient output message storage capacity and maintenance capabilities, in a system where the same output message is output by multiple processors,
In order to change the output message, there is the inconvenience of having to individually change the messages stored in all relevant processors.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and eliminates restrictions on the number of storage layers and storage capacity of output messages, and
A further object of the present invention is to provide an output message management method in a distributed processing system that can eliminate the inconvenience of changing messages for each processor.

[Summary of the invention]

In order to achieve the above object, the present invention generates, modifies, and stores messages output by each processor in a host processor, and transmits the messages to the host processor in response to a code requesting transmission of a specific output message from each processor. This is a method for managing output messages sent and output to.

[Embodiments of the invention]

Next, embodiments of the present invention will be described. First, a distributed processing system to which the present invention is applied will be described with reference to FIGS. 3 and 4. In Figure 3, host processor 1 and distributed processor 2 communicate pOint to point.
This is a distributed processing system in which these processors are connected by a data transmission device 3, and FIG. The present invention is these transmission devices! This is configured regardless of the method in 3.4.

FIG. 1 is a diagram for explaining the present invention in detail, in which a host processor 1 and distributed processors 2a to 2d are the main points.
ttOpaint data transmission device 3, and output messages are registered using the maintenance terminal device 5 of the host processor 1 and stored in the form of a message table 6a on the storage device @6. An example of the contents of this message table 6a is shown in FIG. The contents of this message table 6a can be registered, deleted, or changed using the maintenance terminal device 4, and all output messages of this system are centrally managed in this message table 6a. That is, the code number (C) and message (M) inputted from the maintenance terminal device 5 are registered in the storage device 6 through routes ① to ②.

Now, when a message output request occurs in one of the distributed processors 2a to 2d, for example 2C, the code number (C) is communicated to the host processor 1 through the route (2). The host processor 1 deciphers this code number via the route from ■ to ■, retrieves the corresponding message from the storage device 6, and sends the requested message via the route to the processor 2a.
Send the corresponding message to. This message is output from the distributed processor 2a to an output device such as the message output terminal device 7 or the message output terminal device 8.

Furthermore, if it is necessary to output the same message to another distributed processor 2d due to this output request, the same message is sent from the host processor 1 to the distributed processor 2d via the route ■', and roughly via the route ■'. The same message will be output to that terminal.

〔Effect of the invention〕

According to the present invention, all messages in a system can be centrally managed by using the host processor's larger storage capacity and better maintenance capabilities, and even when multiple processors issue the same message, messages can be managed individually for each individual processor. Provides a method for managing output messages in a distributed processing system that can dramatically improve system maintainability by allowing messages to be managed only by maintenance on the host processor without the need for maintenance to register, delete, or change content. can.

[Brief explanation of drawings]

Figure 1 is a diagram for explaining the output message management method in the distributed processing system of the present invention, Figure 2 is a diagram showing the message table of Figure 1, and Figures 3 and 4 are objects to which the present invention is applied. FIG. 2 is a diagram showing an example of a distributed processing system. 1... Host processor, 2... Distributed processor, 3
... data transmission device, 4... data transmission device, 5.
... Maintenance terminal device, 6... Storage device, 7... Message output terminal device, 8... Message output terminal device,
■~■...Data transmission route, 2a~2b...Distributed processor. Applicant's Representative Patent Attorney Takehiko Suzue 2nd Al Figure 3 Figure 4

Claims (1)

[Claims] In a distributed processing system having one host processor and multiple processors, the host processor generates, modifies, and saves messages output by each processor, and includes code that requests transmission of specific output messages from each processor. A method for managing output messages in a distributed processing system that transmits the message to a processor and outputs the message in response to the message.