JPH0934744A - Micro-diagnostic method for duplex device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To process only a micro-diagnostic program when any abnormality is found out in the case of turning on a power source after the exchange to a standby system device when the micro-diagnostic result shows abnormality. SOLUTION: Corresponding to start from a central processing unit as a host controller, all the micro-diagnostic programs of the standby system device are executed and there is any diagnostic abnormality, a diagnostic result flag showing the diagnostic abnormality and a micro-diagnostic program number in case of finding abnormality are stored in the diagnostic result transmission/ reception part of an active system device. When there is no diagnostic abnormality, the diagnostic result flag showing diagnostic normality is stored. The exchange of the standby system device is performed corresponding to diagnostic test abnormality. After the on-state of power source is detected (P1), the diagnostic result transmission/reception part of the active system device is read out (P2 and P3) and when the diagnostic abnormality flag is raised (P4), only the micro-diagnostic program corresponding to the micro-diagnostic program number in case of finding abnormality is executed (P5). When the diagnostic normality flag is raised, all the micro-diagnostic programs are executed (S6).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro-diagnosis method for a duplexer, and more particularly to a diagnostic test of a standby system by a diagnostic start from a host controller such as a central processing unit and a diagnostic start by turning on the power of the standby system. The present invention relates to a diagnostic execution method of a micro diagnostic program to be executed.

[0002]

2. Description of the Related Art As a redundant device consisting of a standby system device and a working system device, a CPU and a micro-diagnosis storage section storing a plurality of micro-diagnostic programs are provided in the standby system device and the active system device, respectively. Some are controlled by a central processing unit. In the conventional duplexer, when an abnormality of the standby system device is found as a result of execution of a diagnostic test by a micro diagnostic program start instruction from the central processing unit to the standby system device, the central processing unit is notified of the diagnostic result. Based on this notification, the maintenance person replaces the standby system device when the diagnostic test is abnormal. When the start instruction of the micro diagnostic program stored in the standby system device is generated due to the power-on after the work, all the micro diagnostic programs stored in the standby system are executed regardless of the micro diagnostic program when the abnormality is detected. To do.

[0003]

SUMMARY OF THE INVENTION In the above-described conventional micro-diagnosis method for a duplexer, while the diagnostic test range of the micro-diagnosis program increases with the high functionality and high integration of the device, the replacement work of the spare system device is performed. When a micro diagnostic program start-up instruction is generated due to the startup of the power supply after replacement, regardless of the micro diagnostic program at the time of abnormality detection, all the micro diagnostic programs stored in the standby system device are executed. However, this has caused an increase in the execution time and difficulty in searching for a failure, resulting in a problem in maintainability.

[0004]

According to the present invention, each has a plurality of micro-diagnosis programs, and the micro-diagnosis program is executed according to a start-up instruction from a host controller and a start-up instruction at power-on, and the diagnosis result is stored in the above-mentioned upper layer. In a diagnostic execution method of a micro diagnostic program in a duplexing device comprising a standby device and an active device for notifying a control device,
Each of the standby system device and the active system device is provided with a diagnostic result transmitting / receiving means for transmitting / receiving the diagnostic result of the micro diagnostic program to / from a partner other system device temporarily and storing the diagnostic result transmitting / receiving means in advance. When a micro-diagnosis start-up instruction is issued to the standby system device, all the micro-diagnostic programs of the standby system device are executed, and a diagnostic result flag indicating normal or abnormal of the diagnostic result and a micro-diagnostic program number at the time of abnormality detection are set to the diagnostic result. Stored in the diagnostic result transmitting / receiving means of the active system device through the transmitting / receiving means, and thereafter notifying the upper control device of the diagnostic result, and exchanging the standby system device based on the notification of the diagnostic result to the upper control device. When an instruction to activate the micro-diagnosis program for the standby system device is generated due to the power-on after the work, By reading out and referring to the diagnostic result flag stored in the diagnostic result transmitting / receiving unit of the utility system device and the micro-diagnostic program number at the time of abnormality detection in the diagnostic result transmitting / receiving unit of the standby system device, It has a step of making it possible to execute only the micro-diagnosis program when an abnormality is detected among all the micro-diagnosis programs.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of hardware for performing diagnosis of the micro diagnostic program according to the present invention. The duplexer 1 includes a 0-system device 2 and a 1-system device 3. The 0-system device 2 and the 1-system device 3 respectively have CPUs 10 and 11 that perform overall control, diagnostic activation monitoring units 20 and 21 that monitor micro diagnostic activation from the central processing unit 4, which is a higher-level control device, and central devices. Diagnostic result notifying units 30 and 31 for notifying the central processing unit 4 of the micro diagnosis result caused by the micro diagnosing start from the processing unit 4, and power supply startup monitoring units 40 and 41 for monitoring the power supply startup of the self device. Micro diagnostic storage units 50 and 51 storing a plurality of micro diagnostic programs # 1 to #N, and diagnostic result transmitting and receiving units 60 and 61 that transmit and receive micro diagnostic results to and from other system devices and store the micro diagnostic results. , Random access memories (RAM) 70, 71.

FIG. 2 is a flow chart showing a procedure for carrying out a diagnostic test of a standby system device by microdiagnosis by starting diagnostics from a central processing unit, and FIG. It is a flow chart which shows a procedure at the time of performing micro diagnosis by starting up a power supply by exchange.

Next, the operation procedure of the micro-diagnosis method of the present invention will be described with reference to FIGS. 0 system device 2
Is a standby system device, and 1 system device 3 is an active system device. First, after the micro-diagnosis start-up from the central processing unit 4 is received by the diagnosis start-up monitoring unit 20 of the 0-system unit 2 which is the standby system unit (see FIG.
Step C1), the CPU 10 executes the micro-diagnosis programs # 1 to #N in the micro-diagnosis storage unit 50 (step C2), and the presence / absence of a diagnosis abnormality is checked (step C3). If there is a diagnostic abnormality at this time, a diagnostic result flag indicating a diagnostic abnormality of the 0-system device 2 which is a standby system device, and micro-diagnostic program numbers # 1 to # when the abnormality is detected.
After storing any one of N in the diagnostic result transmitting / receiving unit 61 of the 1-system device 3 which is the active system device (step C4), after notifying the central processing unit 4 of the diagnostic abnormality from the diagnostic result notifying unit 30 (step C6), the process ends. To do. When the 0-system device 2 which is the standby system device has no diagnostic abnormality, a diagnostic result flag indicating normal diagnosis is stored in the diagnostic-result transceiver 61 of the 1-system device 3 which is the active system device (step C5), and the central processing is performed. After the diagnosis result notifying unit 30 notifies the device 4 that the diagnosis is normal (step C6), the process ends.

Next, replacement work of the 0-system device 2, which is a standby system device, is performed for reasons such as abnormality of the diagnostic test. When the replacement work of the 0-system device 2 is completed, the power-on monitor 40 checks whether or not the power is turned on (step P in FIG. 3).
1) When the power-on is detected, the storage unit of the diagnostic result transmitting / receiving unit 60 is cleared (step P2). The diagnostic result flag and the micro-diagnostic program number when an abnormality is found are read from the diagnostic result transceiver 61 of the system 1 which is the active system device 3 and stored in the diagnostic result transceiver 60 (step P).
3). It is checked whether the diagnosis normal flag is set in the diagnosis result flag (step P4). If the diagnostic abnormality flag is set, only the micro diagnostic program corresponding to the micro diagnostic program number stored in the diagnostic result transceiver 60 is executed (step P5). If the diagnostic normal flag is set, the micro diagnostic program #
All of 1 to #N are executed (step P6). After the above processing is executed, it is checked whether or not there is a diagnostic abnormality (step P7). If there is a diagnosis abnormality, the diagnosis result flag indicating the diagnosis abnormality of the 0-system device 2 and the micro-diagnosis program number at the time of the abnormality detection are stored in the diagnosis result transmission / reception unit 61 (step P
8), end. If there is no diagnosis abnormality, the diagnosis result flag indicating the diagnosis abnormality of the 0-system device 2 and the micro-diagnosis program number at the time of abnormality detection, which are stored in the diagnosis result transmission / reception unit 61, are cleared (step P9), and the process ends.

[0010]

A duplexer comprising a standby system device and an active system device stores a plurality of micro diagnostic programs, and a micro diagnostic result can be transmitted / received between the standby system device and the active system device and stored. Means for standby system,
Prepared for the current system equipment.

In the above duplexer, the diagnostic result flag indicating the execution result of the diagnostic test by the micro control program start instruction from the host controller to the standby system device and the micro diagnostic program number when an abnormality is found are provided from the standby system device to the active system. After sending it to the diagnostic result transmission / reception means of the device and storing it,
Notify the host controller of the diagnosis result.

When the diagnostic test is abnormal, the maintenance person replaces the spare system device. When the start instruction of the micro diagnostic program stored in the standby system device is generated due to the power-on after the work, the diagnostic result flag stored in the diagnostic result transmitting / receiving means of the active system device and the micro diagnostic program number at the time of abnormality detection By storing in the diagnostic result transmitting / receiving means of the standby system device, it is possible to execute only the micro diagnostic program at the time of abnormality detection among all the micro diagnostic programs stored in the standby system device.
As the diagnostic test range of the micro diagnostic program increases with the high functionality and high integration of the device, it is possible to minimize the diagnostic test execution time in the fault search, to facilitate the fault search, and to improve the maintainability. Have.

[Brief description of drawings]

FIG. 1 is a block diagram of hardware for executing diagnosis of a micro-diagnosis program according to the present invention.

FIG. 2 is a flowchart showing a procedure for performing a diagnostic test of a standby system device by microdiagnosis by starting diagnostics from a host controller.

FIG. 3 is a flowchart showing a procedure for performing a replacement operation of a standby system device when a diagnostic test is abnormal, and performing a micro-diagnosis by turning on a power supply by the replacement.

[Explanation of symbols]

 1 Redundant device 2 0 system device 3 1 system device 4 Central processing unit (upper control device) 10, 11 CPU 20, 21 Diagnostic startup monitoring unit 30, 31 Diagnostic result notification unit 40, 41 Power supply startup monitoring unit 50, 51 Micro Diagnosis storage unit 60, 61 Diagnosis result transmission / reception unit

Claims (1)

[Claims] 1. A standby system device having a plurality of micro diagnostic programs, each of which executes the micro diagnostic program according to a start instruction from a host controller and a start instruction at power-on to notify a diagnosis result to the host controller. And a method of executing a diagnosis of a micro-diagnosis program in a duplex device comprising an active system device, wherein the standby system device and the active system device transmit / receive the diagnostic result of the micro diagnostic program to / from another partner system device temporarily. A diagnostic result transmitting / receiving means to be stored is provided in advance, and when a micro-diagnosis start instruction is given from the host control device to the standby system device, all micro diagnostic programs of the standby system device are executed and the diagnostic result is normal or abnormal. Indicating the diagnostic result flag and the micro diagnostic program number when an abnormality is detected The diagnosis result is stored in the receiving means of the active system device through the receiving means, then,
Notifying the upper control device of the diagnosis result, and starting the micro-diagnosis program of the standby system device due to power-on after replacement work of the standby system device based on the notification of the diagnosis result to the upper control device When an instruction is generated, the diagnostic result flag stored in the diagnostic result transmitting / receiving unit of the active system device and the micro diagnostic program number at the time of abnormality detection are read out and referenced in the diagnostic result transmitting / receiving unit of the standby system device, A micro-diagnosis method for a duplexer, wherein only a micro-diagnosis program when an abnormality is detected among all the micro-diagnosis programs in the standby system device can be executed.