JPH04125741A - Peripheral device with self-diagnostic function - Google Patents

Abstract

PURPOSE:To start self-diagnosis by executing diagnosis in the command level only in a device by a diagnostic program execution part and starting more detailed diagnosis in the circuit level in accordance with the diagnosis result. CONSTITUTION:A peripheral control part 3 receives a command from a diagnos tic program execution part 2 to operate a peripheral device part 5 based on contents of the command and returns information, which indicates whether the result of this operation is normal or not, to the diagnostic program execution part 2 through a data bus 6-2. If diagnosis in the command level results in abnormal end, the diagnostic program execution part 2 discriminates the abnor mal circuit position based on information of abnormality and instructs diagnosis of this position in the circuit level to the peripheral control part 3 through the data bus 6-2 and a signal bus 8-2. Thus, it is unnecessary to always execute diagnosis in the circuit level, and this device is effective to save time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information processing device, and more particularly to a peripheral device with a self-diagnosis function.

[Conventional technology]

Conventional peripheral devices generally have built-in diagnostics at the circuit level that makes up the peripheral device, rather than self-diagnosis at the instruction (command) level sent from the host device that is actually used in operation. It was a target.

Note that the circuit-level diagnosis referred to here involves numerically diagnosing all circuits over time. Furthermore, command-level diagnosis has been achieved by connecting a peripheral device to a higher-level device and issuing an execution command from the software of the higher-level device.

[Problem to be solved by the invention]

In the conventional peripheral devices mentioned above, the diagnosis at the circuit level that makes up the peripheral device involves diagnosing all the circuits.
There was a problem in that it took a long time to perform the diagnosis.

Furthermore, since diagnosis is not performed using a method that is consistent with actual operation (a method of issuing commands from a host device), there is a problem in that failures cannot be detected so that they only become apparent during actual operation. Furthermore, when attempting to perform command-level diagnosis, create software that connects a peripheral device to the host device, issues a command to start the peripheral device from the host device, and determines the normality of the command from the result. There was a task that had to be done.

[Means to solve the problem]

In addition to general (conventional) peripheral devices, the peripheral device with a self-diagnosis function of the present invention includes a self-diagnosis activation section that receives a self-diagnosis request for the peripheral device from a maintenance person, and a self-diagnosis startup section that receives all commands sent from a host device. A diagnostic program execution unit that equally executes instructions and performs a more detailed diagnosis by diagnosing the circuit level when the execution result is abnormal, and a peripheral control unit that controls peripheral devices using instructions from this diagnostic program execution unit. It has an error display section that displays the diagnosis results.

[Effect]

In the present invention, the diagnostic program execution section executes a command level diagnosis on the device itself, and further, based on the diagnosis result, a diagnosis for performing a more detailed circuit level diagnosis is activated. All commands are executed within the device, and self-diagnosis of the peripheral device is activated independently of the host device, independently of the host device, by pressing a switch in the self-diagnosis activation section, for example.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

The figure is a block diagram showing one embodiment of the present invention.

In the figure, in addition to conventional peripheral devices, 1 is a self-diagnosis activation unit that receives requests for self-diagnosis of peripheral devices from maintenance personnel, and 2 is a self-diagnosis activation unit that executes commands equivalent to all commands sent from the host device. 3, a peripheral control unit that controls peripheral devices according to instructions from the diagnostic program execution unit 2; Error display section for displaying diagnostic results, 5 is peripheral device section, 6-1゜6
-2.6-3 is a data bus, 7 is a data bus A18-1
, 8-2, 8-3 are signal buses, and 9 is a signal bus A.

The self-diagnosis starting section 1 is used by a maintenance person to specify whether or not to start self-diagnosis of the peripheral device using a switch (not shown), etc. The self-diagnosis starting section 1 connects the diagnostic program execution section 2 and the signal bus 8-
1.

Diagnostic program execution unit 2 Hiro stores a diagnostic program for diagnosing commands equivalent to commands sent from the host device in non-volatile memory, and sends notifications from self-diagnosis activation unit 1 via signal bus 8-1. The receiver executes a diagnostic program, and if the execution result ends abnormally, performs circuit level diagnosis, and is connected to the peripheral control unit 3 through a data bus 6-2 and a signal bus 8-2. . The error display unit 4 notifies the maintenance personnel of the execution results of the diagnostic program, and is connected to the diagnostic program execution unit 2 and the data bus 6.
-1 is connected. The peripheral control section 3 receives the operation request from the diagnostic program execution section 2 and controls the peripheral device section 5 to actually operate. It is also connected to a host device via a data bus AI and a signal bus A9. The peripheral device unit 5 is a part where peripheral devices actually operate.

Next, the operation of the embodiment shown in this figure will be explained.

First, when a maintenance person wishes to request a self-diagnosis of a peripheral device, he or she presses a switch on the self-diagnosis activation unit 1.

When the switch of the self-diagnosis starting section 1 is pressed, a report is sent to the diagnostic program execution section 2 via the signal bus 8-1.

The diagnostic program execution unit 2 notified from the self-diagnosis startup unit 1 checks whether the peripheral device is being used by the host device via the signal bus 8-2, and if it is in use, the diagnostic program execution unit 2
The error display section 4 is notified through the error display section 4, and the maintenance personnel is notified that the peripheral device is in use.

If the peripheral device is not in use, the diagnostic program execution unit 2 checks whether it is connected to the host device, and if it is connected, sends a signal to the host device that the peripheral device is in use. It notifies it through A11 and accepts commands from the host device, indicates on the error display unit 4 through the data bus 6-1 that self-diagnosis is in progress, and starts executing the stored diagnostic program. do. In addition, if it is not connected to a host device, the data bus 6-1
The error display section 4 displays the fact that self-diagnosis is in progress through the self-diagnosis section 4, and starts executing the stored diagnostic program.

Next, the diagnostic program execution unit 2 uses a data bus 6-2 and a signal bus 8-2 to perform command level diagnosis.
2, a command for operating the peripheral device section 5 is issued to the peripheral control section 3 as if the command had been sent from a host device. The peripheral control unit 3 that receives the command from the diagnostic program execution unit 2 operates the peripheral device unit 5 based on the contents of the command, and sends information on whether the operation result is normal or abnormal to the diagnostic program execution unit 2. Return via bus 6-2.

If the obtained information indicates normal completion, the diagnostic program execution section 2 issues a command to continue operating the peripheral device section 5 and executes all commands.

And if all commands are executed without abnormal termination,
The result is reported to the error display section 4. This error display section 4
erases the display indicating that the self-diagnosis is in progress, displays a display indicating normal completion, and notifies the maintenance personnel.

On the other hand, if the command-level diagnosis ends abnormally, the diagnostic program execution unit 2 determines which circuit is abnormal based on the abnormality information, and controls the peripherals to perform circuit-level diagnosis at that location. 3 via the data bus 6-2 and signal bus 8-2. Then, the peripheral control section 3 that has received the notification performs a circuit-level diagnosis based on the information from the diagnostic program execution section 2 and returns the results to the diagnosis program execution section 2 via the data bus 6-2. The diagnostic program execution section 2 sends the obtained information to the error display section 4 on the data bus 6-.
1 to display an error message and notify the maintenance personnel that there is an abnormality.

〔Effect of the invention〕

As explained above, in the present invention, the diagnostic program execution section executes command-level diagnosis on the device itself, and further, based on the diagnosis result, a diagnosis is activated to perform a more detailed circuit-level diagnosis. This has the advantage that it is not necessary to perform circuit-level diagnosis, which saves time.

Further, by executing all commands within the device by the diagnostic program execution section, there is an effect that self-diagnosis at the command level can be performed in a method that is suitable for actual operation.

Furthermore, by pressing a switch in the self-diagnosis startup section, for example, the self-diagnosis of the peripheral device can be started independently of the host device, so the software starts the host device and executes all commands. This has the effect of being able to diagnose peripheral devices without starting up.

[Brief explanation of drawings]

The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Self-diagnosis starting section, 2... Diagnosis program execution section, 3... Peripheral control section, 4... Error display section, 5... Peripheral device section.

Claims (1)

[Claims] In addition to general peripheral devices, there is also a self-diagnosis activation unit that receives self-diagnosis requests for peripheral devices from maintenance personnel, and executes instructions equivalent to all instructions sent from the host device, and when the execution result is abnormal. a diagnostic program execution unit that performs diagnosis down to the circuit level and executes more detailed diagnosis; a peripheral control unit that controls peripheral devices according to instructions from the diagnosis program execution unit;
A peripheral device with a self-diagnosis function, characterized by having an error display section for displaying diagnosis results.