JP3012491B2 - Micro diagnostic method for duplexer - Google Patents

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 for a standby device by starting a diagnostic from a higher-level control device such as a central processing unit and a diagnostic start by turning on a power supply of the standby device. The present invention relates to a diagnostic execution method of a micro diagnostic program to be executed.

[0002]

2. Description of the Related Art A CPU and a micro-diagnosis storage unit storing a plurality of micro-diagnosis programs are provided in a standby system unit and an active system unit, respectively, as a redundant apparatus including a standby system unit and an active system unit. Some are controlled by a central processing unit. Conventionally, in this duplex device, when an abnormality of a standby system device is found as a result of a diagnosis test performed by a central processing unit to start a micro diagnostic program to a standby system device, the diagnosis result is notified to the central processing unit. Based on the notification, the maintenance person replaces the standby system device when the diagnostic test is abnormal. When the micro diagnostic program stored in the standby system is instructed to start due to the power-on after the operation, all micro diagnostic programs stored in the standby system are executed regardless of the micro diagnostic program when the abnormality was detected. I do.

[0003]

In the above-described conventional micro-diagnosis method for a duplex device, the replacement work of the standby system device is performed while the diagnostic test range of the micro-diagnosis program increases with the high function and high integration of the device. When a micro diagnostic program startup instruction is issued due to power-on due to replacement, a diagnostic test is executed to execute all the micro diagnostic programs stored in the standby device regardless of the micro diagnostic program when the abnormality was detected. This leads to an increase in the execution time and difficulty in searching for failures, and has a problem in maintainability.

[0004]

According to the present invention, each micro-diagnostic program has a plurality of micro-diagnostic programs, and the micro-diagnostic program is executed in response to a start instruction from a host controller and a start instruction at the time of power-on, and the diagnostic result is stored in the host. In the diagnosis execution method of the micro diagnosis program in the redundant device including the standby device and the active device for notifying the control device,
A diagnostic result transmitting / receiving means for transmitting / receiving the diagnostic result of the micro diagnostic program to / from each other and temporarily storing the diagnostic result of the micro diagnostic program in each of the standby system device and the active system device is provided in advance, and When a micro-diagnosis start instruction is issued to the standby system device, all the micro-diagnosis programs of the standby system device are executed, and a diagnosis result flag indicating whether the diagnosis result is normal or abnormal, and a micro-diagnosis program number at the time of abnormality detection are set to the diagnosis result. The diagnostic result transmission / reception means of the active device is stored in the transmission / reception means through the transmission / reception means, and thereafter, the diagnosis result is notified to the higher-level control device, and the spare system device is replaced based on the notification of the diagnosis result to the higher-level control device. When an instruction to start the micro-diagnosis program of the standby device caused by the power-on after the work is issued, The diagnostic result flag stored in the diagnostic result transmitting / receiving means of the service system device and the micro diagnostic program number at the time of abnormality detection are read out and referred to the diagnostic result transmitting / receiving means of the standby system device, so that The method includes a step of enabling only the micro-diagnosis program at the time of abnormality detection among all the micro-diagnosis programs.

[0005]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of hardware for executing diagnosis of a 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 include CPUs 10 and 11 for controlling the entire system, diagnostic activation monitoring units 20 and 21 for monitoring micro-diagnosis activation from the central processing unit 4 as a higher-level control device, respectively. Diagnostic result notification units 30 and 31 for notifying the central processing unit 4 of a micro diagnosis result caused by the micro diagnostics activation from the processing device 4, power-on monitoring units 40 and 41 for monitoring the power-on of the own 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 for transmitting and receiving micro diagnostic results to and from other systems and storing the micro diagnostic results. , Random access memories (RAM) 70, 71.

FIG. 2 is a flow chart showing a procedure for performing a diagnostic test of the standby system by micro-diagnosis by activating a diagnosis from the central processing unit. FIG. It is a flowchart which shows the procedure at the time of performing a micro diagnosis by power-on by replacement.

Next, an operation procedure of the micro diagnostic method according to the present invention will be described with reference to FIGS. Here, system 0 device 2
Is a standby system device, and the system device 3 is an active system device. First, after the micro-diagnostic activation from the central processing unit 4 is received by the diagnostic activation monitoring unit 20 of the 0-system device 2 which is a standby system device (FIG.
In step C1), the CPU 10 executes the micro diagnosis programs # 1 to #N in the micro diagnosis storage unit 50 (step C2), and checks whether there is a diagnosis abnormality (step C3). If there is a diagnosis abnormality at this time, a diagnosis result flag indicating a diagnosis abnormality of the 0-system device 2 which is a standby system device, and micro-diagnosis program numbers # 1 to # at the time of abnormality detection
N is stored in the diagnostic result transmitting / receiving unit 61 of the first system device 3 which is the active system device (step C4), and after notifying the central processing unit 4 of the diagnostic abnormality from the diagnostic result notifying unit 30 (step C6), the process ends. I do. If there is no abnormal diagnosis in the 0-system device 2 as the standby system device, a diagnostic result flag indicating normal diagnosis is stored in the diagnostic result transmitting / receiving unit 61 of the 1-system device 3 as the active system device (step C5), and the central processing is performed. After notifying the device 4 of the normal diagnosis from the diagnosis result notification unit 30 (step C6), the process ends.

Next, replacement work of the 0-system device 2 which is a standby system device is performed due to a diagnostic test abnormality or the like. When the replacement operation of the 0-system device 2 is completed, the power-on monitoring section 40 checks whether or not the power is on (Step P in FIG. 3).
1) When the power-on is detected, the storage unit of the diagnosis result transmitting / receiving unit 60 is cleared (step P2). The diagnostic result flag and the micro-diagnosis program number at the time of abnormality detection are read from the diagnostic result transmitting / receiving unit 61 of the first system 3 which is the active system device and stored in the diagnostic result transmitting / receiving unit 60 (step P
3). It is checked whether the diagnosis normal flag is set in the diagnosis result flag (step P4). If the diagnosis abnormality flag is set, only the micro diagnosis program corresponding to the micro diagnosis program number stored in the diagnosis result transmitting / receiving section 60 is executed (step P5). If the diagnostic normal flag is set, the micro diagnostic program #
1 to #N are all executed (step P6). After execution of the above process, the presence or absence of a diagnosis abnormality is checked (step P7). If there is a diagnostic error, the diagnostic result flag indicating the diagnostic error of the 0-system apparatus 2 and the micro diagnostic program number at the time of finding the abnormality are stored in the diagnostic result transmitting / receiving unit 61 (step P).
8), end. If there is no diagnostic abnormality, the diagnostic result flag indicating the diagnostic abnormality of the system 0 device 2 stored in the diagnostic result transmitting / receiving unit 61 and the micro diagnostic program number at the time of abnormality detection are cleared (step P9), and the process ends.

[0010]

The redundant apparatus comprising the standby system and the active system stores a plurality of micro diagnostic programs, and transmits and receives the micro diagnostic results between the standby system and the active system and stores the diagnostic results. Means as a standby system device,
Prepared for working system equipment.

In the above-mentioned duplexer, a diagnosis result flag indicating a result of a diagnostic test executed by a micro-diagnostic program start instruction from a higher-level control device to a standby system device and a micro-diagnosis program number at the time of abnormality detection are transmitted from the standby system device to the active system. After sending it to the diagnostic result transmitting / receiving 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 standby system device. When a start-up instruction of the micro-diagnosis program stored in the standby device is generated due to the power-on after the operation, the diagnosis result flag stored in the diagnosis result transmission / reception means of the active device and the micro-diagnosis program number at the time of abnormality detection are stored. Is stored in the diagnostic result transmitting / receiving means of the standby system device, so that only the micro diagnostic program at the time of abnormality detection can be executed 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 equipment, the effect of minimizing the execution time of the diagnostic test in the fault search, simplifying the fault search, and improving the maintainability has been improved. Have.

[Brief description of the 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 illustrating a procedure when a diagnostic test of a standby system device is performed by micro-diagnosis by starting diagnosis from a higher-level control device.

FIG. 3 is a flowchart showing a procedure for performing a micro-diagnosis by replacing a standby system device when a diagnostic test is abnormal or the like and starting up a power supply by the replacement.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Redundant apparatus 2 0 system apparatus 3 1 system apparatus 4 Central processing unit (upper-level control apparatus) 10, 11 CPU 20, 21 Diagnosis start monitoring unit 30, 31 Diagnosis result notification unit 40, 41 Power supply start monitoring unit 50, 51 micro Diagnosis storage unit 60, 61 Diagnosis result transmission / reception unit

Claims (1)

(57) [Claims] 1. A standby device which has a plurality of micro diagnostic programs, executes a micro diagnostic program in response to a start instruction from a host controller and a start instruction at power-on, and notifies a diagnosis result to the host controller. And a diagnostic execution method of a micro diagnostic program in a redundant device comprising an active system device, wherein the backup system device and the active system device each transmit and receive the diagnostic result of the micro diagnostic program to and from each other's other system device and temporarily A diagnostic result transmitting / receiving means to be stored is provided in advance, and when the higher-level control device issues a micro-diagnosis activation instruction to the standby system device, all the micro-diagnosis programs of the standby system device are executed to determine whether the diagnostic result is normal or abnormal. A diagnostic result flag indicating the abnormality and a micro diagnostic program number when an abnormality is found. The diagnosis result is stored in the receiving means of the active system device through the receiving means, then,
Notifying the host controller of the diagnosis result, and starting a micro-diagnosis program of the standby device caused by power-on after replacement of the standby device based on the notification of the diagnosis result to the host control device When the instruction is generated, the diagnostic result flag stored in the diagnostic result transmitting / receiving means of the active apparatus and the micro diagnostic program number at the time of abnormality detection are read out to the diagnostic result transmitting / receiving means of the standby apparatus, and are referred to. A micro-diagnosis method for a duplex device, wherein only a micro-diagnosis program when an abnormality is found can be executed among all micro-diagnosis programs in the standby system.