JPH03240813A - Channel action interrupting system - Google Patents

Abstract

PURPOSE:To realize a channel device which is free from the breakage of data without stopping the channel action at the time of occurring abnormality by inhibiting the production of an action command or suppressing the answer to a built-in channel. CONSTITUTION:A channel 300 performs the transfer of data to an input/output device 400 based on a channel program 520 and by an instruction of a channel controller 120. A main storage 500 stores the channel information 530, a valid display flag 540, etc., in addition to the program 520. The channel 300 to be executed is selected with an input/output action start instruction and the channel action is started. If a channel holder 100 has the temperature abnormality, a temperature abnormality detection circuit 110 informs the controller 120 of the temperature abnormality and resets the corresponding flag 540 according to the processing procedure. A CPU 600 stops the start instruction to be given to the channel 300 with occurrence of the temperature abnormality.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to channel suspension schemes.

[Conventional technology]

Conventionally, in channel equipment, when a failure occurs that can be expected to occur, such as a temperature abnormality, which will cause the power to be cut off and the channel operation cannot continue, - for boat fishing, the operator is notified of the occurrence of the failure. As a result, the power to the channel was cut off and the channel was left unattended until it became inoperable and shut down.

[Problem to be solved by the invention]

In the conventional channel operation interruption method described above, when a temperature abnormality occurs, the operating channel is suddenly stopped,
The input/output operation being executed was interrupted.

Such forced interruptions often involve destruction of data stored in input/output devices connected to the channel device, and such data destruction often takes time to repair.

Additionally, in a channel subsystem that employs a dynamic channel subsystem, such a forced interruption often appears as a failure of the logical channel corresponding to the I/O device being transferred;
Even though there is another alternative bus, it may become impossible to access the input/output device.

[Means to solve the problem]

The channel operation interruption method according to the first aspect of the present invention includes a means for detecting temperature abnormality in a housing housing a channel, and a means for detecting a temperature abnormality in a housing that stores a channel, and when a temperature abnormality occurs, a new input from software to a channel built in the housing. and means for prohibiting issuance of an output operation instruction.

The channel operation interruption method according to the second aspect of the present invention includes a means for detecting temperature abnormality in a housing housing a channel, and when a temperature abnormality occurs, a new input/output device for the channel built in the housing. and means for suppressing the response.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 shows an embodiment of the first invention.

120 is a channel control device, and central processing unit 600
The channel 300 is controlled according to input/output instructions from the channel 300.

The channel 300 controls the input/output device 400 according to the channel program 520 according to instructions from the channel control device 120.
Perform data transfer between

The channel control device 120, the channel 300, and the temperature abnormality detection circuit 110 are mounted on the channel wall 100.

In addition to the channel program 520, the main memory 500 also includes a correspondence table 510 that displays a list of channel groups installed in each channel body 100, and channel information 530. A valid display flag 540 is stored corresponding to each channel information 530 and indicates whether each channel is operable.

FIG. 2 is a flowchart showing the operations performed in the central processing unit W600 when instructing the channel control device 120 to start an input/output operation, and FIG. 3 is the operation performed in the channel control device 120 when a temperature abnormality occurs. It is a flowchart which shows.

In FIG. 1, when it is necessary to execute an input/output operation with an input/output device due to software operation, the central processing unit 600 performs an input/output operation on the channel control device 120 according to the processing procedure shown in the flowchart of FIG. Instructs to start output operation.

Channel control device 120 selects channel 300 to be executed according to this start instruction and starts it. The channel 300 performs input/output operations with the input/output device 400 according to the given channel program 520.

Next, when a temperature abnormality occurs in the channel wall body 100, the temperature abnormality detection circuit 110
20 to that effect.

The channel control device 120 resets the corresponding validity display flag 540 according to the processing procedure shown in the flowchart of FIG.

That is, as shown in the flowcharts of FIGS. 2 and 3, due to the occurrence of temperature abnormality, the central processing unit 600 is unable to issue a new activation instruction to the corresponding channel 300.

FIG. 4 shows an embodiment of the second invention.

121 is a channel control device, and the central processing device 60
Channel 301 is controlled according to input/output instructions from 1.

The channel 301 controls the input/output device 401 according to the channel program 521 according to instructions from the channel control device 121.
Perform data transfer between

The channel control device 121, the channel 301, and the temperature abnormality detection circuit 111 are mounted on the channel wall 101.

In addition to the channel program 521, the main memory 501 stores a correspondence table 511 that displays a list of channel groups installed in each channel body.

The channel 301 includes an operation suppression flag 311 that indicates whether or not to respond to an operation request from the input/output device 401.
is built-in.

FIG. 5 is a flowchart showing the operation performed in the channel 301 when there is an operation request from the input/output device 401, and FIG. 6 is a flowchart showing the operation performed in the channel control device 121 when a temperature abnormality occurs. be.

In FIG. 4, when it becomes necessary to execute an input/output operation with an input/output device due to software operation, the central processing unit 601 instructs the channel control device 121 to start the input/output operation.

Channel control device 121 selects channel 301 to be executed according to this start instruction and starts it. The channel 301 performs input/output operations with the input/output device 401 according to the given channel program 521.

When some kind of operation request is required from the input/output device to the channel, the input/output bag f401 connects channel 3.
01 to that effect.

The channel 301 executes the transfer operation according to the operation request contents by the processing means shown in the flowchart of FIG.

Next, when a temperature abnormality occurs in the channel housing 101, the temperature abnormality detection circuit 111
21 to that effect.

The channel control device 121 sets the operation inhibition flag 311 in the corresponding channel 311 according to the processing procedure shown in the flowchart of FIG.

That is, as shown in the flowcharts of FIGS. 5 and 6, due to the occurrence of temperature abnormality, the input/output device 401 is unable to issue a new operation request to the corresponding channel 301.

〔Effect of the invention〕

As explained above, the present invention provides means for detecting temperature abnormality in a housing housing a channel, and issuing new input/output operation instructions for channels built in the housing when temperature abnormality occurs. The following effects can be achieved by providing a means for prohibiting a response from a new input/output device or a means for suppressing a response from a new input/output device.

(2) When a temperature abnormality occurs, a channel device without data destruction can be realized by sequentially stopping channel operations without forcibly interrupting channel operations.

2. Furthermore, when a temperature abnormality occurs, by sequentially stopping the operations of the channels without forcibly interrupting the operations of the channels, it is possible to prevent the logical channels from becoming inoperable.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the first invention, FIG. 2 is a flowchart showing operations performed in central processing unit 600 when instructing input/output operations to channel control device 120, and FIG. is a flowchart showing the operation performed in the channel control device 120 when a temperature abnormality occurs, FIG. 4 is a block diagram showing an embodiment of the second invention, and FIG. 5 shows an operation request from the input/output device 401. FIG. 6 is a flowchart showing the operations performed in the channel control device 121 when an abnormal temperature occurs. 100.101...Channel body, 110°11
1...Temperature abnormality detection circuit, 120.121...Channel control device, 600.601...Central processing unit, 3
00.301...Channel, 311...Operation suppression flag, 400,401...I/O device, 500°50
1... Main memory, 510, 511... Correspondence table, 520
... Channel program, 530 ... Channel information, 540 ... Valid display flag, 201 ... Signal line.

Claims (2)

[Claims] (1) Means for detecting a temperature abnormality in a housing housing a channel, and means for prohibiting the issuance of new input/output operation instructions from software to the channel built into the housing when a temperature abnormality occurs. A channel operation interruption method having. (2) means for detecting temperature abnormalities in the enclosure housing the channels; and means for suppressing responses from new input/output devices to channels built into the enclosure when temperature abnormalities occur; Channel operation interruption method with.