JPH09251403A - Computer, system console and computer system provided with them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a computer and a system console and also to provide a computer system which includes the computer and console in order to preserve the messages without outputting them to an abnormal communication path and then to automatically output the messages to the communication path after its restoration. SOLUTION: In the case where a communication path 5 has abnormality and a communication path status of a communication path management table 17 is turned off, only the messages that are registered in a message preservation table 13 are preserved in a message preservation file 14 among those messages to be sent to a console 7 from a computer 1. When the path 5 is restored, the preserved messages are automatically sent to the console 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer, a system console for maintaining and managing the computer, and a computer system including these computers and the system console.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a diagram showing a conventional computer system disclosed in Japanese Patent Publication No. JP-A-2003-264, where 1 is a computer for performing predetermined data processing, and 7 is a computer 1.
System console, which displays the messages generated by
2 is transmission data such as messages transmitted from the computer,
Reference numeral 3 is response data such as status as a result of processing the transmission data 2 transmitted from the computer 1 by the system console 7. In the computer 1, 11 is a message output requesting unit that generates a message to be displayed on the system console 7, 30 is a message that is generated by the message output requesting unit 11 is sent to the communication processing unit 19, and the message saving processing unit 15 saves the message. A message output processing unit for transmitting the request signal 8d, a message storage processing unit 15 for storing the message in the message storage file 14 after receiving the message storage request signal 8d, 19
Is a communication processing unit that executes communication processing with the system console 7. Reference numeral 5 is a communication path such as a LAN that connects the computer 1 and the system console 7. In the system console 7, 71 is a communication processing unit that receives the transmission data 2 from the computer 1, and 73 is a display processing unit that displays the message received by the communication processing unit 71 on the system console 7.

Next, the operation will be described. Message transmission processing and message storage processing in the conventional computer system shown in FIG. 26 will be described with reference to the flowchart of FIG. When a message to be output to the system console 7 is generated in the computer 1, the message output request unit 11 sends the message output request signal 8a to the message output processing unit 30.
Is transmitted (ST231). Message output request signal 8
The message output processing unit 30 having received a transmits a message storage request signal 8d to the message storage processing unit 15 (ST232), and requests the communication processing unit 19 to send a message to the system console 7b. Is transmitted (ST234). Message save processing unit 15 that has received the message save request signal 8d
Refers to the message storage table 13 to acquire message type (message storage necessity / non-storage) information 1a indicating whether the received message needs to be stored, and if the storage is required, stores the message in the message storage file 14. (ST233). The message storage table 13 is set by the user as a parameter of the computer 1.
The contents of the message save file 14 can be read from the system console 7 by a file dump command.

[0004]

In the configuration of the conventional computer system shown in FIG. 26, all messages which are requested to be output to the system console 7 and which are set in the message storage table 13 are stored in the message storage file. Saved in 14. Further, since the message transmission is attempted regardless of the state of the communication path 5, the amount of messages to be stored increases. Result message save file 1
Since 4 becomes full soon, there is a problem that the system efficiency is not improved because a lot of timings for discarding unnecessary messages from the message storage file 14 are required. Further, there is also a problem that wasteful communication is performed because a message is transmitted to the system console 7 even when the communication path 5 is out of order.
Further, there is a problem that the system console 7 needs a file dump function in order to output the message saved in the message save file 14. Further, there is a problem that the order between the save message saved in the message save file 14 and the message output to the system console 7 by the file dump function is not guaranteed at all.

The present invention has been made to solve the above problems, and when a message generated as a display request to the system console fails to be transmitted to the system console or a communication channel is abnormal, the message is transmitted on the communication channel. It is an object of the present invention to obtain a computer and a system console that can save a message without outputting it to a communication channel and automatically output a save message to the communication channel after restoration of the communication channel, and a computer system including these.

[0006]

A computer according to a first aspect of the present invention includes a message storage check processing unit for checking whether a generated message is transmitted or stored.
A message storage table in which the necessity of message storage is registered, a message storage processing unit that stores the message in a message storage file when the message needs to be stored, a storage message output processing unit that outputs the storage message, and a system console. A communication path management table that registers the communication status with the communication path, a communication path check processing unit that periodically monitors whether communication is normally performed, and a communication processing unit that executes communication processing with the system console. It is equipped with.

A system console according to a second aspect of the present invention is a communication processing section for transmitting and receiving data, a communication path check response processing section for responding to a communication path check request, and a display processing for displaying a message. And a section.

According to a third aspect of the present invention, there is provided a computer system in which the computer according to the first aspect and the system console according to the second aspect are connected by a communication path, and the communication path is regularly monitored and communicated. When a path error is detected Set the communication path status in the communication path management table to OFF and check this communication path management table before sending the message. When the communication path status is OFF, save the message and restore the communication path. When it does, it outputs a save message.

In the system console according to the present invention, the communication path check response processing section is provided with a timer monitoring section for monitoring the reception of the communication path check request signal and a timer for counting the communication path check time. It is a thing.

According to a fifth aspect of the present invention, there is provided a computer system in which the computer according to the first aspect and the system console according to the fourth aspect are connected by a communication path, and communication with a constant period transmitted from the computer. The reception of the route check signal is monitored over time, and when this signal is not received within a predetermined time, the communication route abnormality information is displayed on the display screen.

According to a sixth aspect of the present invention, a computer receives a manual communication path ON request signal from a system console to turn on the communication path, and a communication path ON request receiving unit for requesting output of a save message. Be prepared.

A system console according to a seventh aspect of the present invention is provided with a communication path ON request transmission unit that allows a user to manually set the communication path status in the communication path management table of the computer to ON.

According to an eighth aspect of the present invention, there is provided a computer system in which the computer according to the sixth aspect and the system console according to the seventh aspect are connected by a communication channel, and a user of the system console manually operates the communication channel. When a request is made to set the communication path status in the management table to ON, a manual communication path ON request signal is transmitted, and based on this, the communication path status in the communication path management table is turned ON.
The save message stored in the message save file as well as being set to is output.

According to a ninth aspect of the present invention, a computer has a connection console management table in which addresses of a plurality of connection destination system consoles and a state of a communication path are registered, and when a communication path abnormality is detected, the addresses are sequentially output from this table. A connection console switching unit that switches the connection destination to the console that succeeds in communication by repeating the communication path check for each system console is provided.

According to a tenth aspect of the present invention, there is provided a computer system in which the computer according to the eighth aspect and a plurality of system consoles according to the second aspect are connected by a communication path, and the communication processing unit detects an abnormality. Then, the connected console switching unit sets the communication path status status of the console number in the connected console management table to OFF, then sequentially searches the remaining console numbers, acquires the communication destination address, attempts communication, and succeeds in transmission. When this is done, the communication path status of the console in the connection destination console management table is set to ON, and the output of a save message is requested.

A computer according to an eleventh aspect of the present invention is a storage message compression processing unit that compresses data stored in a message storage file when the message storage file is full and stores the compressed data in a compression storage file, and a communication path. And a save message decompression processing unit that decompresses and outputs the compressed data when is restored.

According to a twelfth aspect of the present invention, there is provided a computer system in which the computer according to the eleventh aspect and the system console according to the second aspect are connected by a communication path. When the message save file is full, the message save is performed. The data stored in the file is compressed and saved in the compressed save file, and when the communication path is restored, the compressed data is decompressed and a decompression message is sent to the system console.

According to a thirteenth aspect of the present invention, a computer stores a message storage check processing unit for checking whether a generated message is to be transmitted or stored, a message storage table in which necessity of message storage is registered, and a message When saving is required, a message saving processing unit that saves the message in a message saving file, a saving message output processing unit that outputs the saving message, and communication that regularly monitors whether communication is normally performed Connection check section, a communication section that executes communication processing with the system console, a connection console status management table that stores connection information for multiple system consoles, and a connection that constantly monitors the status of the connected system consoles. Detects failures in the console check section and system console Those having a connection console switching unit that switches the connection destination console.

According to a fourteenth aspect of the present invention, there is provided a computer system in which the computer according to the thirteenth aspect and a plurality of system consoles according to the second aspect are connected by a communication path.
When the communication processing unit detects an abnormality, the connection destination of the system console is switched.

According to a fifteenth aspect of the present invention, a computer stores a message storage check processing unit for checking whether a generated message is transmitted or stored, a message storage table in which the necessity of message storage is registered, and a message storage When saving is required, a message save processing unit that saves the message in a message save file, a save message output processing unit that outputs the save message, a communication path management table in which the communication status with the system console is registered, and communication The communication path check processing unit that regularly monitors whether the connection is normally performed, the communication processing unit that executes the communication processing with the system console, and the connection console status management that has registered the connection information of multiple system consoles. Table and system console to detect failed system consoles And Le fault recognition unit, in which and a connection console switching unit that switches the connection destination system console.

A system console according to a sixteenth aspect of the present invention is provided with a failure detecting section for detecting a failure and a failure notifying section for requesting the communication processing section to notify the failure.

In a computer system according to a seventeenth aspect of the present invention, the computer according to the fifteenth aspect and a plurality of system consoles according to the sixteenth aspect are connected by a communication path, and a failure occurs in the system console. In this case, the computer recognizes the failure at the time of occurrence and switches the message output destination system console in real time.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1. FIG. 1 is a block configuration diagram of a computer system according to a first embodiment of the present invention, in which 1 is a computer for performing predetermined data processing, 7 is a system console for displaying a message generated by the computer 1, and 5 is a computer 1. Is a communication path such as a LAN that connects the computer and the system console 7. Reference numeral 2 is transmission data such as a message transmitted from the computer 1, and 3 is response data including a status obtained as a result of processing the transmission data 2 transmitted from the computer 1 by the system console 7. A plurality of computers 1 and system consoles 7 can be connected to each other, but in the first embodiment, a one-to-one configuration is provided to simplify the description.

In the computer 1, 11 is a message output requesting unit for generating a message to be displayed on the system console 7, 12 is a message saving check processing unit for checking whether to send or save the message, and 13 is a message saving request. The message storage table in which the type is registered, 15 obtains the saved message type (whether or not to save the message) information 1a from the message storage table 13, and stores the message that needs to be saved in the message save file 1
4 is a message storage processing unit to be stored, 16 is a storage message output processing unit that extracts a storage message from the message storage file 14, and 17 is ON when communication with the system console 7 is normally performed, and when an error occurs Is a communication path management table in which the OFF status is registered, 18 is a communication path check processing unit that periodically transmits a communication path check request signal 1r to monitor whether communication is normally performed, and 19 is a system A communication processing unit that performs communication processing with the console 7.

In the system console 7, 71 is a communication processing unit for receiving the transmission data 2 from the computer 1, 72
The communication path check response processing section 73 receives the communication path check request signal 7c from the communication processing section 71, checks the state of the communication path 5, and returns a response signal 7d indicating whether or not the communication path 5 is normal. The display processing unit receives a message from the processing unit 71 and displays the message on the screen of the system console 7.

Next, a configuration example of the communication path management table 17, the messages used in the computer system according to the present invention, and the message storage table 13 will be described. In the communication path management table 17, as shown in FIG.
The system console address and communication path status are registered. The system console address indicates the address of the system console 7 of the connection destination, and the communication path status is registered as ON when the communication path 5 is normal and OFF when an abnormality occurs in the communication path 5. Message output request signal 1 generated by message output request unit 11
As shown in the configuration example in FIG. 3, b is composed of a message ID indicating the type of message and a message body. As shown in the configuration example of FIG. 4, the message storage table 13 is registered for each message ID, for example, whether or not the message having the ID is required to be stored. The message storage table 13 is defined by the user as a parameter of the computer 1.

Next, the operation will be described. First calculator 1
The processing of the message generated within will be described with reference to the flowchart shown in FIG. When the message output request unit 11 in the computer 1 generates a message to be output to the system console 7, the message output request signal 1b is transmitted to the message storage check processing unit 12 (ST71).
Upon receiving the message output request signal 1b, the message storage check processing unit 12 acquires the communication path ON / OFF information from the communication path management table 17 (ST72), and the communication path 5
Is ON (usable), the message save file 14 is referred to and the presence or absence of the save message 1f is checked (ST
718), if there is no save message, the communication processing unit 19
The transmission request signal 1g is transmitted to (ST74). If there is a save message, the message save request signal 1c is transmitted to the message save processing section 15 (ST79). This prevents a newly generated message from being sent before the save message 1f. When the communication path is OFF (unusable), the message saving check processing unit 12 does not request the communication processing unit 19 to send, but sends the message saving request signal 1c to the message saving processing unit 15 (ST7).
9). Upon receiving the message save request signal 1c, the message save processing unit 15 acquires the message type (message save necessity / non-necessity information) 1a of the received message from the message save table 13 and confirms whether the message is a save target. (ST710) If the data is required to be saved (ST711), it is saved in the message save file 14 (ST712). If the data is not required to be saved (ST71
1) Do nothing and end the series of processes.

On the other hand, the communication processing unit 19 sends the message requested to be sent to the communication processing unit 19 to the system console 7 without saving it in the message saving file 14 (ST7
5) If the communication is normally completed (ST76), the transmission success information 1s is transmitted to the message storage check processing unit 12 (ST77) and the process is completed (ST78). When the communication fails, the communication processing unit 19 detects this and transmits the communication path OFF information 1k to the communication path management table 17 to set the communication path information in the communication path management table 17 to OFF (ST714). Further, the transmission failure information 1s is transmitted to the message storage check processing unit 12 (ST715). Receiving this, the message storage check processing unit 12 transmits the message storage request signal 1a to the message storage processing unit 15 as in the case where the communication path is off (ST79). By the above processing steps, the message is saved in the message save file 14 when the communication path 5 is OFF (unusable) or when the transmission fails.

Next, FIG. 6 shows a procedure in which a message saved in the message save file 14 due to an abnormality in the communication path 5 is output and displayed on the system console 7 after the communication path 5 is restored by the communication path check processing of a fixed cycle. This will be described with reference to the flowchart shown. Communication path check processing unit 18
Waits for the transmission cycle (ST81), and when the transmission cycle comes, the current ON / OF of the communication path 5 is determined from the communication path management table 17.
The F information 1d is acquired (ST82), and the communication path check request signal 1r is transmitted to the communication processing unit 19 (ST83). The communication processing unit 19 is the system console 7, and when the communication path 5 is ON (communication is possible) at the previous communication (ST84) and the communication is normally completed (ST86), the transmission success information 1s is processed as the communication path check processing. Send to section 18 (S
T87) Normal end, communication path 5 turned on during the last communication
When the communication fails (ST84) and the communication is not completed normally (ST86), the transmission failure information 1s is transmitted to the communication channel check processing unit 18 (ST89) and the communication channel management table 17 is also sent. Turn off communication path information
(Communication impossible) is set (ST810). At the time of the previous communication, when the communication path 5 is OFF (communication is not possible) (ST84) and the communication fails (when it does not end normally) (S
In (T811), the communication processing unit 19 transmits the transmission failure information 1s to the communication path check processing unit 18 (ST815).
In this case, the communication path 5 remains off. When the communication path is OFF (communication is not possible) at the previous communication (ST84) and the communication is successful (when the communication is normally completed) (ST811)
Then, the communication processing unit 19 sends the transmission success information 1s to the communication path check processing unit 18 (ST812), and the communication path check processing unit 18 receiving this information turns ON the communication path information of the communication path management table 17 (communication (Possible) (ST81
3) Further, the save message output request signal 1n is transmitted to the save message output processing unit 16 (ST814). Upon receiving this signal, the stored message output processing unit 16 displays the message on the display screen of the system console 7.

Next, the flow chart shown in FIG. 7 shows the output processing of the save message when the communication path is restored (immediately after the communication path 5 transits from the OFF state to the ON state) in the communication path check processing described in the flowchart of FIG. Will be explained. When the save message output processing unit 16 receives the save message output request signal 1n from the communication path check processing unit 18 (ST101), the message save file 1
The save message 1f is acquired from the data No. 4 (ST102), and the save message transmission request signal 1p is transmitted to the communication processing unit 19 (ST103). Upon receiving this, the communication processing unit 19
Send the message to the system console 7 (ST
104), if this is successful (ST105), until there is no saved message (ST106), step S
The processing from T102 to step ST105 is repeated. When the communication fails (ST105), the communication processing unit 19 sets the communication path information of the communication path management table 17 to OFF, and the transmission failure information 1q is stored in the message output processing unit 16.
(ST108). The saved message output processing unit 16 that has received the transmission failure information 1q internally stores the message that has failed to be transmitted, and outputs the message with priority when the output request is made next time.

Next, the setting process of the message storage table 13 will be described with reference to the flowchart shown in FIG. As shown in FIG. 4, the message storage table 13 is registered for each message ID, for example, whether the message needs to be stored, that is, whether the message having the ID needs to be stored. In FIG. 4, M indicates the maximum message ID. Returning to FIG. 8, the setting process of the message storage table 13 is performed by the user writing with a command while interacting with the system console 7. Message IDs are sequentially displayed (ST91) together with the message body on the display screen of the system console 7, and the user is prompted to select whether to save the displayed message (S).
T92). When the user selects "necessary" for saving, "necessary" is set for the corresponding message ID in the message saving table 13.
Is set (ST93), and if "NO" is selected for saving, "NO" is set for the corresponding message ID in the message saving table 13. (ST94). Step ST
92-step ST94 processing message ID1-M
Is repeated for all (ST91).

In the computer system according to the first embodiment,
Messages that failed to be sent to the system console 7 due to a failure of the communication path 5 are stored in the message storage table 1
Only those having an ID set to “Required” are saved in the message save file 14. When the communication path 5 is restored by the periodical communication path check, the communication path 5 is automatically transmitted to the system console 7. Therefore, the message display on the system console 4 does not lose continuity and the message generation order is impaired. Nor. If the message transmission fails even once, the communication channel information of the communication channel management table 17 is set to OFF (communication impossible), and the table is referred to before the message transmission so that the message is not transmitted if the communication channel is OFF. I have to. As a result, the message is transmitted only when the communication path 5 is ON (normal), so that the message can be transmitted quickly and reliably. Further, since the message saving process is performed immediately when the communication path 5 fails, unnecessary communication errors such as waiting for a timeout do not occur, and the efficiency of message processing is improved.

Embodiment 2 FIG. FIG. 9 is a block configuration diagram of a computer system according to the second embodiment of the present invention. The computer 1, the system console 7, the communication path 5, the transmission data 2, the response data 3, the message output request unit 11, and the message saving check process are shown. Unit 12, message storage table 13, message storage processing unit 15, storage message output processing unit 16, communication path management table 17, communication path check processing unit 18, communication processing unit 19, communication processing unit 71, communication path check response processing unit 72 and the display processing unit 73 are shown in FIG.
The explanation is omitted because it is the same as that shown in. In addition to the configuration of the computer system according to the first embodiment shown in FIG. 1, the computer system according to the second embodiment has a timer monitoring unit that monitors the arrival of a fixed cycle communication path check request signal in the system console 7. 74 and a timer 75.

Next, the operation will be described. The operation of the timer monitoring unit 74 provided in the system console 7 will be described with reference to the flowchart shown in FIG. When the system console 7 is activated, the timer monitoring unit 74 activates the monitoring timer 75 (ST121) and sets an initial timer value in the timer 75 (ST122). Timer monitoring unit 74
Receives the communication path check message (ST12
3) The timer value of the timer 75 is reset to the initial value (ST122), and if the communication path check message is not received, the timer value of the timer 75 is decremented (ST1).
24) By repeating this operation, if the timer value becomes “0” before receiving the communication path check request signal, it is determined that the time is up (ST125), and the timer processing unit 74 transmits the error display request signal 7e to the display processing unit 73. (ST1
26), the display processing unit 73 having received this displays "communication path abnormality" on the screen of the system console 7 (ST1).
27).

As described above, in the computer system according to the second embodiment shown in FIG. 9, in addition to the configuration of the first embodiment shown in FIG. 1, a constant period communication path check request signal arrives in the system console 7. A timer monitoring unit 74 and a timer 75 for monitoring are provided. As a result, when a time-out occurs (when the communication path check request signal does not arrive), “communication path abnormality” is displayed on the screen of the system console 7, so that the user of the system console 7 knows the abnormality of the communication path 5 in real time. be able to.

Embodiment 3. FIG. 11 is a block configuration diagram of a computer system according to Embodiment 3 of the present invention.
Computer 1, system console 7, communication path 5, transmission data 2, response data 3, message output request unit 11, message saving check processing unit 12, message saving table 13, message saving processing unit 15, saved message output processing unit 16, The communication path management table 17, the communication path check processing unit 18, the communication processing unit 19, the communication processing unit 71, the communication path check response processing unit 72, and the display processing unit 73 are the same as those shown in FIG. Omit.
In the computer system according to the third embodiment, in addition to the configuration of the computer system according to the first embodiment shown in FIG. 1, the user manually operates the computer 1 in the system console 7.
A communication path ON request transmission unit 76 for requesting ON processing of the communication path 5 (processing for setting the communication path 5 to be communicable) to the communication path management table 17 provided therein is provided.
The computer 1 is provided with a communication path ON request receiving unit 20 for processing a communication path ON request manually made by the user of the system console 7.

Next, the operation will be described. The operation of the computer system when the user of the system console 7 manually reconnects the communication path 5 will be described with reference to the flowchart shown in FIG. When the user of the system console 7 inputs a reconnection request for the communication path 5 from the system console 7, the communication path ON request transmission unit 76 causes the communication processing unit 7 to operate.
1 to the manual communication path ON request signal 7i (ST
140), and the communication processing unit 71 which received this transmits a communication path ON request signal to the computer 1 (ST141). Calculator 1
When the communication processing unit 19 receives the communication path ON request signal (ST142), it notifies the communication path ON request receiving unit 20 of this (ST143). Communication path ON request receiver 20
Checks the current status of the communication path 5 (communication path ON / OFF) by referring to the communication path management table 17 (ST144),
If the communication path 5 is ON (ST145), nothing is done and the communication processing unit 19 is notified of the completion of the processing (ST148), and the communication processing unit 19 receiving the notification returns the processing completion to the system console 7 (ST149). To complete. Communication channel 5 is O
In the case of FF (ST145), the communication path ON request receiving unit 2
0 sends the communication channel ON signal 2a to the communication management table 17, sets the communication channel status of the communication management table 17 to ON (ST146), and further transmits the save message output request signal 2c to the save message output processing unit 16. (ST146). Upon receiving this, the save message output processing unit 16 performs the same process as the save message output process at the time of restoration of the communication path (immediately after the communication path 5 transits from the OFF state to the ON state) described using the flowchart shown in FIG. And save message is output.

According to the third embodiment, in addition to the configuration of the first embodiment shown in FIG. 1, the user manually turns on the communication path 5 in the system console 7 (communication path O
Since the N request transmission unit 74) is provided, the user of the system console 7 can manually turn on the communication path 5 even if the check cycle of the communication path 5 is set to be long. It is possible to immediately display on the display screen of the system console 7.

Fourth Embodiment FIG. 13 is a block configuration diagram of a computer system according to Embodiment 3 of the present invention.
Computer 1, system console 7, communication path 5, transmission data 2, response data 3, message output request unit 11, message saving check processing unit 12, message saving table 13, message saving processing unit 15, saved message output processing unit 16, The communication path management table 17, the communication path check processing unit 18, the communication processing unit 19, the communication processing unit 71, the communication path check response processing unit 72, and the display processing unit 73 are the same as those shown in FIG. Omit. In addition to the configuration of the computer system according to the first embodiment shown in FIG. 1, the computer system according to the third embodiment includes a plurality of system consoles # 1 to #N (N is a system console connected to the communication path 5). The number of units) is connected. The computer 1 is provided with a connection console management table 21 and a connection console switching unit 22. In the connection console management table 21, connection information with each system console is registered. Connection console switching unit 22
When detecting an error in the communication path between the computer 1 and a certain system console, the connection destination system console address information 3d registered in the connection console management table 21 is acquired one after another to check the communication path 5. Repeat to switch the connection destination to the system console that succeeded in communication.

In the connection console management table 21, for example, as shown in FIG. 14, console numbers, communication destination console addresses, and communication path states are registered for each system console. The address of the communication destination system console and the communication path state are set for each console number 1 to N (N: maximum number of console connections). The communication path state is used to recognize the output destination system console by turning on the system console currently outputting and turning off the other system consoles. Also, when communication with the currently communicating system console becomes abnormal, it is also used to sequentially search for system consoles with normal communication from the system consoles whose communication path status is OFF and switch the output destination. . Since multiple system consoles are connected, the message structure becomes complicated. The message structure used in the fourth embodiment is composed of a communication destination console address, a message ID, and a message body, as illustrated in FIG. When the message output request unit 11 generates a message to a predetermined system console, the message storage check processing unit 12 acquires from the connected console management table 21 the communication destination console address of the console number whose communication path status is ON, and adds this. Then, the message having the structure shown in FIG. 15 is generated and transmitted to the communication processing unit 19. The communication processing unit 19 sends the message to the system console having the address added to the beginning of the message.

Next, the operation will be described. Figure 1 shows the procedure for switching the connected console and outputting a message.
This will be described with reference to the flowchart shown in FIG. When the communication processing unit 19 detects an abnormality in the message transmission to the system console or the data transmission such as the communication path check request (S
(T171), the transmission failure signal 3a is transmitted to the connection console switching unit 22 (ST172). Upon receiving this, the connection console switching unit 22 changes the connection console management table 21.
The communication path state corresponding to the console number of is set to OFF (ST173). Then, the remaining console numbers in the connected console management table 21 are sequentially searched (ST174), the communication destination console address is acquired (ST175), and the communication path check request signal 3c is sent to the communication path check processing unit 18 for this address. Send (S
T176). Receiving this, the communication path check processing unit 18 transmits the communication path check request signal 1r to the communication processing unit 19 (ST177). If the communication processing unit 19 executes the communication and succeeds in the transmission (ST178), the connected console switching unit 22 sets the communication path state of the console of the connected console management table 21 to ON (ST1710), and further outputs the saved message. The save message output request signal 1n is transmitted to the processing unit 16 (ST1711). The save message output processing unit 16 performs the same process as the save message output process at the time of restoration of the communication path (immediately after the communication path transits from the OFF state to the ON state) described using the flowchart shown in FIG. 7. , Output save message. The system console to which this save message is output becomes the output destination in the subsequent communication. When all the communication paths of the connection console management table 21 are OFF, the message saving check processing unit 12 performs a message saving process. If the transmission fails (ST17
8), sequentially switch the connection destination console (ST17
4) Perform communication path check processing. This console switching process is repeated to communicate with the first recovered system console. The connection console switching unit 22 performs the fixed cycle communication path check processing that was performed by the communication path check processing unit 18 in the first embodiment shown in FIG.

In the fourth embodiment, in addition to the configuration of the first embodiment shown in FIG. 1, a plurality of system consoles # 1 to # are provided.
N, the connection console management table 21 in which the address of the connection destination system console and the communication path state are set in the computer 1, and the output destination system when an abnormality is detected in the output system console by referring to this table 21 Since the connection console switching unit 22 for switching the console is provided, the output destination console can be automatically switched and output can be continued even if an error occurs in one system console, so the message save file 14 becomes full. It is possible to eliminate the loss of messages due to the above, and it is possible to reduce the amount of messages stored in the computer 1.

Fifth Embodiment FIG. 17 is a block configuration diagram of a computer system according to Embodiment 5 of the present invention,
Computer 1, system console 7, communication path 5, transmission data 2, response data 3, message output request unit 11, message saving check processing unit 12, message saving table 13, message saving processing unit 15, saved message output processing unit 16, The communication path management table 17, the communication path check processing unit 18, the communication processing unit 19, the communication processing unit 71, the communication path check response processing unit 72, and the display processing unit 73 are the same as those shown in FIG. Omit. In addition to the configuration of the computer system according to the first embodiment shown in FIG. 1, the computer system according to the fifth embodiment includes a compression request signal from the message storage processing unit 15 when the message storage file 14 becomes full. 4c, a save message compression processing unit 24 that compresses and saves the data stored in the message save file 14, a compressed save file 23 that saves the compressed data, and a communication path 5
Is restored, the save message decompression processing unit 25 receives the decompression request signal 4h from the save message output processing unit 16 and decompresses the data stored in the compressed file 23 and outputs the decompression message 4i. The data structure of the decompression message 4i includes a decompression message number and a decompression message body as shown in FIG.

Next, the operation will be described. The compression processing procedure of the save message in the fifth embodiment will be described with reference to the flowchart shown in FIG. When performing the compression process, the message save processing unit 15 first obtains the save file number information 4a from the message save file 14 (ST197), and if the message save file 14 is not full (ST191), the process shown in FIG. The message saving process is performed in the same manner as in the first embodiment shown in FIG. That is, the message storage processing unit 15 stores the message in the message storage file 14 (ST196). When the message save file 14 is full (ST19
1), the message storage processing unit 15 transmits the compression request signal 4c to the storage message compression processing unit 24 (ST19).
2). Upon receiving this, the save message compression processing unit 24
The data stored in the message save file 14 is compressed to generate the compressed save file 23 (ST19
3) When it is completed, the message storage file 14 is cleared (ST194), and the compression completion notification 4b is transmitted to the message storage processing unit 15 (ST195). Upon receiving this, the message saving processing unit 15 restarts saving the message in the cleared message saving file 14 (ST196).

Next, the procedure for outputting the stored message after the communication path is restored will be described with reference to the flowchart shown in FIG. When the communication path is restored (communication path 5 goes from OFF to O
Immediately after the transition to the N state), the save message output process is performed as described using the flowchart shown in FIG. 7. At this time, the save message output request signal 1n is received from the communication path check processing unit 18 (ST211).
The save message output processing section 16 transmits a decompression request signal 4h to the save message decompressing processing section 25 before outputting the save message from the message saving file 14 (ST212). Receiving this, the save message decompression processing unit 25 decompresses the compressed data stored in the compressed save file 23 and sends the decompress message 4i to the save message output requesting unit 16 (ST213). The save message output processing unit 16 outputs all the decompression messages 4i, and then outputs the save message 1m stored in the message save file 14 (ST214).

In addition to the configuration of the first embodiment shown in FIG. 1, the fifth embodiment compresses the data stored in the message storage file 14 when the message storage file 14 becomes full. Compression file 23
Save message compression processing unit 24 to save in the communication path 5
Message decompression processing unit 2 for decompressing and outputting the data stored in the compressed save file 23 after recovery of
Since 5 is provided, the number of messages to be stored can be significantly increased. As a result, the message storage file 14 becomes full, and the probability of message loss occurring due to being unable to store the message can be reduced.

Embodiment 6 FIG. 21 is a block configuration diagram of a computer system according to Embodiment 6 of the present invention.
Computer 1, system console 7, communication path 5, transmission data 2, response data 3, message output request unit 11, message saving check processing unit 12, message saving table 13, message saving processing unit 15, saved message output processing unit 16, Communication path management table 17, communication path check processing unit 18, communication processing unit 19, communication processing unit 71, communication path check response processing unit 72, a plurality of system consoles # 1 to #N, connection console management table 21, and connection console. Since the switching unit 22 is the same as that of the fourth embodiment shown in FIG. 13, its explanation is omitted. Embodiment 6
Then, in addition to the configuration of the fourth embodiment shown in FIG. 13, a plurality of system consoles # 1 to # exist in the computer 1.
A connection console check unit 27 that outputs N periodical check requests and a connection console status management table 26 in which the connection status with each system console and the failure status are registered are provided. The connection console status management table 26 is configured, for example, as shown in FIG.
The communication destination console address, the communication path status status (ON / OFF), and the console status status (normal / failure) are set in correspondence with the console numbers from ~ N.

5h is a connection console status management table 2
6 is a connection console information request signal indicated by the communication destination console address to 6; 5g is a connection console information request signal 5h; and 5f is a connection console information request signal 5h. A console check request signal for the connection console obtained in step 5e, a communication path check result notification signal by the communication path check processing unit 18, 5e
j is a check result signal for notifying the connection console switching unit 22 of the check result by the connection console checking unit 27.

Next, the operation will be described. The procedure of the communication destination system console automatic recognition process in the sixth embodiment shown in FIG. 21 will be described with reference to the flowchart shown in FIG. The connection console check unit 27 outputs the connection console information request signal 5h indicated by the console number to the connection console state management table 26 (ST30
0), the connected console status management table 26 returns the communication destination console address corresponding to the console number of the connected console information request signal 5h to the connected console check unit 27 as the system console address information 5g (ST301). The connected console check unit 27 outputs a console check request signal 5f to the communication path check processing unit 18 according to the system console address information 5g for checking the communication path of the console (ST3).
02). The communication path check processing unit 18 checks the communication path of the console (ST303), and returns the check result to the connected console check unit 27 as the communication path check result communication signal 5e (ST304). Based on the communication path check result communication signal 5e, the connection console check section 27 outputs a check result signal 5j to the connection console switching section 22 to maintain the communication path status of the connection console status management table 26 (ST305). The connection console switching unit 22 follows the check result signal 5j,
The console status change signal 5d for setting the console status of the connected console status management table 26 to normal or failed is output, and the connected console management table 26 is updated (ST306). In this way, by constantly monitoring the connected system consoles # 1 to #N, it is possible to immediately switch to the system console whose console status is normal in the process of switching the communication destination console when a message is output. Become.

According to the sixth embodiment, a plurality of system consoles # 1 to #N and a connection console check unit 27 that constantly checks the status of each system console are provided in the computer 1, so that one Even if communication is abnormal when a message is output to the system console, a normal system console to which the message output is redirected is immediately obtained. Therefore, a message is sent to the normal system console instead of the system console in which communication is abnormal. Can be output. As a result, the message does not remain in the computer 1.

Embodiment 7 FIG. 24 is a block configuration diagram of a computer system according to Embodiment 7 of the present invention.
Computer 1, system console 7, communication path 5, transmission data 2, response data 3, message output request unit 11, message saving check processing unit 12, message saving table 13, message saving processing unit 15, saved message output processing unit 16, Communication path management table 17, communication path check processing unit 18, communication processing unit 19, communication processing unit 71, communication path check response processing unit 72, a plurality of system consoles # 1 to #N, connection console management table 21, and connection console. Since the switching unit 22 and the connection console state management table 26 are the same as those in the sixth embodiment shown in FIG. 21, their description will be omitted.

In the computer system according to the seventh embodiment, a system console failure recognition unit 29 is provided in place of the connection console check unit 27 in the configuration of the sixth embodiment shown in FIG. A failure detection unit 77 for detecting a failure is provided in each of the consoles # 1 to #N. In FIG. 24, reference numeral 78 is a failure notification unit for requesting the computer 1 to notify a failure such as a hardware error or software error of its own system console, and 7k is a failure for notifying the failure notification unit 78 of a failure detected by the failure detection unit 77. The notification signal, 7 m indicates that the failure notification unit 78 is the communication processing unit 71.
Is a failure notification request signal to be notified to. 6a is received by the communication processing unit 19 in the computer 1 from the system console 7,
Failure notification signal to be notified to the connection console switching unit 22, 2
9 is a connection console switching unit 2 in response to the failure notification signal 6a
2 is a system console failure recognition unit for notifying the message storage check processing unit 12 of a system console in which a failure has occurred according to the console state change signal 6d detected by 6; and 6f from the system console failure recognition unit 29 to the message storage check processing unit 12. Is a console failure notification signal of.

Next, the operation will be described. The procedure of system console switching processing performed by the computer system according to the seventh embodiment shown in FIG. 24 when the system console fails will be described with reference to the flowchart shown in FIG.
At the time of normal message output, the message storage check processing unit 12 holds the console number of the system console whose communication path 5 is ON (ST35).
0). For example, a failure such as a hardware error or a software error occurs in the system console 7 (ST3
51), the failure detection unit 77 recognizes the failure (ST3
52), and outputs the failure signal 7k to the failure notification unit 78 (S
T353). The failure notification unit 78 outputs a failure notification request signal 7m to the communication processing unit 71 to notify the computer 1 of the failure occurrence (ST354). When the communication processing unit 19 of the computer 1 receives the notification of the failure occurrence from the system console 7, it outputs the failure notification signal 6a to the connection console switching unit 22 (ST355). Upon receiving the failure notification signal 6a, the connection console switching unit 22 receives the connection console status management table 26.
The console state change signal 6d is output in order to set the state of the system console 7 having the console number #N of 1. The console state change signal 6d is also notified to the system console failure recognition unit 29 (ST35).
6). The system console failure recognition unit 29 uses the console failure notification signal 6f indicated by the console number #N, for example.
To the message storage check processing unit 12 (ST
357). Upon receiving this notification, the message storage check processing unit 12 checks whether or not the console number #N sent by the console failure notification signal 6f is the same as the held console number set to ON for the communication path. (ST358). If the check result is NO, the process is terminated as it is. If the result of the check is that the console number #N is the same as the console number set for communication channel ON, that is, if the system console in which communication channel 5 is ON has failed, the system with console number #N The console 7 is separated, and the system console in which the console status is normal and the communication path status is ON is held as a new output destination according to the information set in the connected console status management table 26 (ST359). The communication path status and console status of the connection console status management table 26 are as described in the fourth embodiment.
And updated according to the sixth embodiment.

According to the seventh embodiment, each of the plurality of system consoles is provided with a failure detecting section 77 and a failure notifying section 78 for recognizing that a failure has occurred, so that the system consoles in the computer 1 can be operated from the failed system console. The system console failure recognition unit 29 that switches the message output destination system console in response to the failure notification is provided, so that even if one system console fails, the message output destination can be switched to a normal system console in real time. Is possible. As a result, messages will not be delayed in the computer 1.

[0055]

As described above, according to the first aspect of the present invention, the message saving check processing unit for checking whether the generated message is transmitted or saved, and the message for registering the necessity of saving the message. Save table,
When a message needs to be saved, a message save processing unit that saves the message in a message save file, a save message output process unit that outputs the save message, and a communication path management table in which the communication status with the system console is registered. Since it is configured to include a communication path check processing unit that regularly monitors whether communication is normally performed and a communication processing unit that executes communication processing with the system console, a communication path failure or the like may occur. For messages that could not be sent to the system console, only those that are set to "required" are saved in the message save file in the message save table and are automatically sent to the system console when the communication path is restored. The display does not lose continuity and does not impair the generation order There is a result. If the message transmission fails even once, set the communication path information in the communication path management table to OFF (communication impossible) and refer to this table before sending the message so that the message is not sent if the communication path is OFF. Since the message is transmitted only when the communication path is ON (normal), the message can be transmitted quickly and reliably. Further, since the message saving process is performed immediately when the communication path fails, unnecessary communication errors such as waiting for a timeout do not occur, and the message processing efficiency is improved.

According to the second aspect of the present invention, a communication processing unit for transmitting and receiving data to and from the system console, a communication path check response processing unit for responding to a communication path check request, and a display for displaying a message. Since it is configured to include the processing unit, there is an effect that the communication path can be managed quickly and reliably.

According to the third aspect of the present invention, the message that failed to be transmitted and displayed on the system console is held, and the saved message is saved when the communication path is restored by the communication path check performed at regular intervals. Since it is configured to automatically send to, you only need to save the required message,
This has the effect of reducing the amount of accumulated messages. Also,
There is also an effect that a message can be automatically displayed on the system console when the communication path is restored without impairing continuity. Further, once the communication has failed, the communication path status in the communication path management table is set to OFF, and the message is not sent when the communication path status is OFF by referring to this communication path management table before sending the message. Since there is no useless data transmission, there is an effect that traffic on the communication path can be reduced.

According to the invention described in claim 4, the communication path check response processing section is provided with a timer monitoring section for monitoring the reception of the communication path check request signal and a timer for counting the communication path check time. Therefore, there is an effect that the user of the system console can know the abnormality of the communication path in real time.

According to the fifth aspect of the present invention, the system console is provided with the timer monitoring section for monitoring the arrival of the communication path check request signal for checking the communication path at a constant cycle.
Since the error is notified when the communication channel check request signal from the computer does not arrive at the time-out, that is, the user of the system console has an effect of being able to know the abnormality of the communication channel in real time.

According to the sixth aspect of the present invention, a communication channel ON request receiving unit for receiving the manual communication channel ON request signal from the system console to turn ON the communication channel and requesting the output of the save message is provided. With this configuration, the user can manually set the communication path to ON.

According to the invention of claim 7, the system is provided with a communication path ON request transmission unit which allows the user to manually set the communication path status in the communication path management table of the computer to ON. There is an effect that the user of the console can manually set the communication path to ON.

According to the invention described in claim 8, since the means for manually turning on the communication path from the system console is provided, even if the cycle of the communication path check request is set long, the communication path is manually set. By turning on, it is possible to detect the restoration of the communication path in real time and output the message stored in the computer.

According to the invention described in claim 9, when the connection console management table in which the addresses of the plurality of connection destination system consoles and the state of the communication path are registered and the communication path abnormality is detected, the addresses are sequentially acquired from this table. Then, the communication path check is repeated for each system console, and the console that has succeeded in communication is provided with the connection console switching unit that switches the connection destination.
Even if one of the system consoles becomes abnormal, the output destination console can be automatically switched to continue the output.

According to the tenth aspect of the present invention, a plurality of system consoles are connected, and the connection console management table in which the address of the connection destination console and the communication path status are set in the computer, and the output destination console When an error is detected, the connection console management table is used to refer to this connection console management table and the connection console switching unit that switches the output destination console is provided. Therefore, even if one system console becomes abnormal, the output destination console is automatically Since the output can be switched to and output can be continued, the reliability of the message output system is improved, and the amount of messages stored in the computer can be reduced.

According to the eleventh aspect of the present invention, when the message save file becomes full, the save message compression processing section for compressing the data stored in the message save file and saving the compressed data in the save file is provided. Since the storage message decompression processing unit that decompresses and outputs the compressed data upon restoration is provided, there is an effect that the number of stored messages can be significantly increased.

According to the twelfth aspect of the present invention, when the message save file becomes full, the save message compression processing section for compressing the data stored in this file and the decompression processing after the communication path is restored. Since the configuration is such that the stored message decompression processing unit for outputting as a message is provided, the number of stored messages can be greatly increased, and the system reliability can be improved.

According to the thirteenth aspect of the present invention, a message storage check processing unit for checking whether the generated message is transmitted or stored, a message storage table in which the necessity of message storage is registered, and the message storage When a message is required, a message save processing unit that saves the message in a message save file, a save message output processing unit that outputs the save message, and a communication path that regularly monitors whether communication is normally performed. A check processing unit, a communication processing unit that executes communication processing with the system console, a connection console status management table that stores connection information of multiple system consoles, and a connection console that constantly monitors the status of connected system consoles. Connects when a failure is detected in the check section and the system console Because it is configured to have a connection console switching unit that switches consoles, if a communication error occurs when a message is output to the system console, another system console that can be sent is immediately obtained. There is an effect that the switching process can be performed at high speed.

According to the fourteenth aspect of the present invention, the connection console check unit for monitoring the states of the plurality of connected system consoles is provided. Therefore, when a message is output to the system console, a communication error occurs. In the event of a failure, another system console that can be sent is immediately obtained, which has the effect of enabling rapid switching processing in the event of an abnormality. Further, since it is not necessary to sequentially check a plurality of connected system consoles when an abnormality occurs, there is an effect that the communication path load at the time of abnormality can be reduced.

According to the fifteenth aspect of the present invention, a message saving check processing unit for checking whether the generated message is transmitted or saved, a message saving table in which necessity of message saving is registered, and a message saving If a message is required, the message save processing unit that saves the message in the message save file, the save message output processing unit that outputs the save message, the communication path management table that registers the communication status with the system console, and the communication A communication path check processing unit that regularly monitors whether or not it is operating normally, a communication processing unit that executes communication processing with the system console, and a connection console status management table that has registered connection information for multiple system consoles. And the system console that detects the failed system console. Since it is configured to have a recognition unit and a connection console switching unit that switches the connection destination system console, the message output destination can be switched if the faulty system console is the message output destination. There is an effect that can be output to.

According to the sixteenth aspect of the present invention, since the system console is provided with the failure detecting section and the failure notifying section, when a failure occurs in the system console, the failure occurring in the system console in the computer is detected. It has the effect of being immediately recognizable.

According to the seventeenth aspect of the present invention, since the system console is provided with the failure detecting section and the failure notifying section, when a failure occurs in the system console, a failure occurs in the computer in the system console. In the computer that has received the failure notification, the system console failure recognition unit switches the message output destination if the failed system console is the message output destination, so even if the message output destination system console fails. Since the switching process can be performed in real time without overhead, there is an effect that a message can always be output to a normal system console.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a computer system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of a communication path management table.

FIG. 3 is a diagram illustrating a configuration example of a message generated by a message output request unit.

FIG. 4 is a diagram showing a configuration example of a message storage table.

FIG. 5 is a flowchart showing a processing procedure of a message generated in the computer.

FIG. 6 is a flowchart showing a procedure in which a message saved in a message save file due to an abnormality in a communication path is output and displayed on a system console after the communication path is restored by a communication path check process of a fixed cycle.

FIG. 7 is a flowchart illustrating a stored message output processing procedure when a communication path is restored in the communication path check processing described in the flowchart of FIG. 6 according to the first embodiment. is there.

FIG. 8 is a flowchart showing a procedure for setting a message storage table.

FIG. 9 is a block configuration diagram of a computer system according to a second embodiment of the present invention.

FIG. 10 is a flowchart showing an operation of a timer monitoring unit provided in the system console.

FIG. 11 is a block configuration diagram of a computer system according to a third embodiment of the present invention.

FIG. 12 is a flowchart showing the operation of the computer system when the user of the system console manually reconnects the communication path.

FIG. 13 is a block configuration diagram of a computer system according to a fourth embodiment of the present invention.

FIG. 14 is a diagram showing a configuration example of a connection console management table.

FIG. 15 is a diagram showing a structural example of a message used in the fourth embodiment of the present invention.

FIG. 16 is a flowchart showing a processing procedure for switching a connection destination system console and outputting a message.

FIG. 17 is a block configuration diagram of a computer system according to a fifth embodiment of the present invention.

FIG. 18 is a diagram showing an example of a data structure of a decompression message.

FIG. 19 is a flowchart showing a compression processing procedure of a saved message.

FIG. 20 is a flowchart showing an output processing procedure of a save message after the communication path is restored.

FIG. 21 is a block configuration diagram of a computer system according to a sixth embodiment of the present invention.

FIG. 22 is a diagram showing a configuration example of a connection console state management table.

FIG. 23 is a flowchart showing a procedure of communication destination system console automatic recognition processing.

FIG. 24 is a block configuration diagram of a computer system according to a seventh embodiment of the present invention.

FIG. 25 is a diagram showing a procedure of system console switching processing performed when the system console fails.

FIG. 26 is a block diagram of a conventional computer system.

FIG. 27 is a flow chart showing a procedure of message transmission processing and storage processing in a conventional computer system.

[Explanation of symbols]

1 computer, 1n save message output request signal, 1r
Communication channel check request signal, 4a Information on number of saved data,
4c compression request signal, 4h decompression request signal, 4i decompression message, 5 communication path, 5g system console address information, 7 system console, 7e error display request signal, 7i manual communication path ON request signal, 7k
Failure notification signal, 11 Message output request part, 12
Message saving check processing unit, 13 message saving table, 14 message saving file, 15 message saving processing unit, 16 saved message output processing unit,
17 communication path management table, 18 communication path check processing section, 19 communication processing section, 20 communication path ON request receiving section,
21 connection console management table, 22 connection console switching unit, 23 compressed save file, 24 save message compression processing unit, 25 save message decompression processing unit,
26 connection console status management table, 27 connection console check unit, 29 system console failure recognition unit, 71 communication processing unit, 72 communication channel check response processing unit, 73 display processing unit, 74 timer monitoring unit, 75 timer, 76 communication channel ON Request transmission unit, 77 failure detection unit, 78 failure notification unit.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G06F 11/30 320 G06F 11/30 320G 13/00 301 13/00 301C 353 353U 15/00 320 15 / 00 320A

Claims (17)

[Claims] 1. A message output requesting unit for generating a message, a message saving check processing unit for checking whether to send or save the message, and a message saving registering information as to whether or not the message needs to be saved. If the message generated by the message output request part needs to be saved by referring to the table and this message save table, the message save processing part that saves the message in the message save file and the message save file If the communication between the save message output processing unit that outputs the saved save message and the system console is normally performed, O
N, a communication path management table in which an OFF status is registered when an abnormality occurs, and a communication path check process for periodically transmitting a communication path check request signal to monitor whether communication is normally performed And a communication processing unit that executes communication processing with a system console such as a message and a communication path check request signal. 2. A communication processing unit for transmitting and receiving data and the like, a communication channel check response processing unit for receiving a communication channel check request signal and returning a response signal, and a display processing unit for displaying a received message on a display screen. System console with. 3. A computer system in which the computer according to claim 1 and the system console according to claim 2 are connected by a communication path, and the communication path check processing unit periodically connects the communication path from the computer to the system console. When the communication path error is detected, the communication path status of the communication path management table is set to OFF, and the message storage check processing unit checks this communication path management table before sending the message, and the communication path status is OFF. A computer system characterized in that a message saving process is sometimes performed, and a saved message output processing unit outputs a saved message from a message saving file when the communication channel is restored by a periodical communication channel check. 4. The communication path check response processing section is provided with a timer monitoring section for monitoring the reception of a communication path check request signal at a constant cycle and a timer for counting the communication path check time. The system console described in 2. 5. A computer system in which the computer according to claim 1 and the system console according to claim 4 are connected by a communication path, and the timer monitoring unit checks the communication path of a fixed cycle transmitted from the computer. When a signal is received, a timer monitors the time, and when a communication channel check signal is not received within a predetermined timer value, an error display request signal is sent to the display processing unit, and the display processing unit receiving this signal displays the communication channel on the display screen. A computer system characterized by displaying abnormal information. 6. A communication path ON request receiving unit for receiving a manual communication path ON request signal from the system console to turn ON the communication path and requesting output of a save message. The computer described in 1. 7. The system console according to claim 2, further comprising a communication path ON request transmission unit that requests a process for a user to manually set the communication path status in the communication path management table of the computer to ON. 8. A computer system in which the computer according to claim 6 and the system console according to claim 7 are connected by a communication path, wherein the user of the system console manually sets the communication path of the communication path management table of the computer. When a process for setting the status to ON is requested, a manual communication path ON request signal is transmitted, and the communication path ON request processing unit in the computer which receives this signal sets the communication path status in the communication path management table to ON. At the same time, a save message output request signal is sent to the save message output processing unit, and the save message output processing unit that receives this signal
A computer system characterized by outputting a save message stored in a message save file. 9. A connection console management table in which addresses and communication path states of a plurality of connection destination system consoles are registered, and when a communication path error is detected for a certain one system console, the connection console management table displays the system consoles. The computer according to claim 1, further comprising: a connection console switching unit that sequentially acquires address information, repeats a communication path check for each system console, and switches a connection destination to a console that has succeeded in communication. 10. A computer system in which the computer according to claim 9 and a plurality of system consoles according to claim 2 are connected by a communication path, and data transmission such as a message to the system console or a communication path check request. When the communication processing unit detects an error by the, the connected console switching unit detects this and sets the communication path status status of the relevant console number in the connected console management table to OFF, and then the remaining console numbers in the connected console management table. Are sequentially searched, the communication destination console address information is acquired, a communication path check request signal is transmitted to the address, and when the transmission is successful, the communication path status status of the console in the connection destination console management table is set to O.
A computer system characterized in that it is set to N and sends a save message output request signal to a save message output processing unit. 11. A save message compression processing unit that receives a compression request signal from the message save processing unit when the message save file is full, compresses the data stored in the message save file, and saves the compressed data in the compressed save file. And a save message decompression processing unit that decompresses the compressed data stored in the compressed save file upon receiving the decompression request signal when the communication path is restored, and outputs a decompression message. The calculator shown. 12. A computer system in which the computer according to claim 11 and the system console according to claim 2 are connected by a communication path, wherein the message storage processing unit stores a message storage file when performing message storage processing. When the message save file is full, a compression request signal is sent to the save message compression processing unit, and the save message compression processing unit that receives this signal stores the message in the message save file. The stored message is decompressed and saved in the compressed save file. When the communication path is restored, the save message decompression processing unit decompresses the data stored in the compressed save file and decompresses this decompressed message. A computer system characterized by transmitting to a system console. 13. A message output requesting unit for generating a message, a message saving check processing unit for checking whether to send or save the message, and a message saving registering information as to whether or not the message needs to be saved. If the message generated by the message output request part needs to be saved by referring to the table and this message save table, the message save processing part that saves the message in the message save file and the message save file A saved message output processing unit that outputs a saved message that has been saved, a communication path check processing unit that periodically sends a communication path check request signal and monitors whether communication is normally performed, a message, and a communication path Performs communication processing such as check request signals with the system console. Based on the communication processing part that executes, the connection console status management table in which the address of the connection destination system console is registered as the connection information of multiple system consoles, and the status of the connected system consoles is constantly monitored according to this connection console status management table. Then
Among the plurality of system consoles, a connection console check unit that detects a system console in which a failure has occurred, and a connection console status management table when a failure is detected for one system console that has this connection console check unit A computer equipped with a connection console switching unit that sequentially obtains system console address information from the system, repeats communication channel checks for each system console, and switches the connection destination to the console that has succeeded in communication. 14. A computer according to claim 13 and claim 2.
In a computer system in which multiple system consoles listed are connected by a communication path, and the communication processing section detects an error due to data transmission to the system console such as a message or communication path check request, the connection console switching section A computer system characterized by sequentially acquiring system console address information from a connected console status management table, repeating communication path checks for each system console, and switching the connection destination to a system console that has succeeded in communication. 15. A message output requesting unit for generating a message, a message saving check processing unit for checking whether to send or save the message, and a message saving registering information as to whether or not the message needs to be saved. If the message generated by the message output request part needs to be saved by referring to the table and this message save table, the message save processing part that saves the message in the message save file and the message save file A saved message output processing unit that outputs a saved message that has been saved, a communication path check processing unit that periodically sends a communication path check request signal and monitors whether communication is normally performed, a message, and a communication path Performs communication processing such as check request signals with the system console. A message processing check section that stores the communication processing section that executes, the connection console status management table that registers the address of the connection destination system console as the connection information of multiple system consoles, and the system console that the connection console switching section detects due to the failure notification signal. The system console failure recognition unit that notifies the system console and the system console address information from the connected console status management table are sequentially acquired, the communication path check is repeated for each system console, and the connection destination is switched to the console that succeeded in communication. Calculator with a department. 16. The system console according to claim 2, further comprising a failure detection unit that detects a failure and a failure notification unit that requests the communication processing unit to notify the computer of the failure notification. 17. A computer according to claim 15, and claim 1.
A computer system in which a plurality of system consoles described in 6 are connected by a communication path, and when a failure occurs in the system console, the failure information is immediately notified to the computer, and the status of each system console is displayed by the computer. A computer system characterized in that it recognizes when a failure occurs and performs switching processing of the message output destination system console in real time.