JPS5856021A - Terminal diagnostic system - Google Patents

Abstract

PURPOSE:To perform diagnostic processing effectively by controlling the execution of every item of a diagnostic program in the storage device of a terminal under the control of a host machine if a fault occurs at the terminal. CONSTITUTION:If a fault occurs at a terminal connected to a host machine through a communication circuit, the host side recognizes the fault of the terminal from the resulting fault, etc., of a communication sequence. Then, when the diagnostic program of the terminal is held in readiness for execution, the host machine executes the diagnostic program on the disk DISK of the terminal, for every item. Then, the results are displayed on the system console of the host side. Consequently, an operator at the host side informs a person in charge of the maintenance of the terminal of the fault and the analysis results to take the best measure which corresponds to the contents of the fault.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) If a failure occurs during O communication with the host at a terminal connected to the host via the conventional communication circuit III, the operator of the terminal or the host Upon contact from the operator, a CE (maintenance engineer) heads to the location where the failure occurred. Then, a failure analysis is performed using a provided diagnostic program, and measures are taken depending on the cause.

A problem with the conventional techniques as described above is the delay in failure analysis. Tsubot p%CE does not know the specific details and cause of the problem! ! , Toto was heading towards the bathhouse where the problem occurred.

(2) Purpose/Key Points of the Invention By enabling the terminal to be diagnosed from the host, the inventor makes it possible to quickly understand and analyze the details of the failure, and to enable the CE in charge of the terminal to accurately diagnose the problem. The purpose is to help patients take appropriate action.

When a failure occurs in a terminal connected to a host via a communication circuit, the host recognizes it in one of the following ways.

■ Based on the status notification from the terminal, the host determines that there is a terminal failure.

■ If an abnormality occurs in the predetermined communication sequence from the host's perspective, it is determined to be a terminal failure.

[Yes] The terminal operator makes a phone call to the operator at υ, hoss.

Yes, the host side takes one of the following actions.

■ The host operator recognizes the above condition by displaying a message on the host system console using item 0, or by item #i0, and performs an online test.
Program (OLTP) t-Start.

@ 0LTP is automatically activated by the items ■ and ■.

0LTP is a program developed for testing online systems, and can perform online diagnostics in parallel with normal online operations (normal communication between terminal and host). Activated 0LTP Fi, diagnostic program C? present in the storage of said terminal. We will perform execution control and proceed with failure analysis. When the failure analysis ability is completed, the analysis results are presented to the host operator. Then, the host operator will contact C, who is in charge of the terminal.
Notify E of the failure and report the analysis results. That K
Therefore, the CE in charge performs optimal treatment according to the content of the failure based on the analysis result t-.

In addition, 0LTP will notify the CE of the failure and report the analysis results.
If it is added as an O-function, the effects of the present invention will be even greater.

If the cause of the failure is still unknown even after running the above diagnostic program, send a high-grade diagnostic program from the host to the terminal and run it to perform a more detailed failure analysis.Investigate the cause. Then a tortoise is formed. The present invention is useful when there is a limit to the 7-aisle memory capacity of the terminal, and only the optimal diagnostic program created based on past failure cases is resident, or when no diagnostic program is resident on the terminal. This is especially effective in cases where the

(3) Detailed explanation summary Figure 1 is a diagram showing an example of the network configuration, No. 28#i
A configuration diagram of the turnal in the Kt diagram, FIG. 3 is a configuration diagram of the diagnostic program existing in the terminal O storage device,
Bottom line 4! ! ii #i vote 5 A diagram showing an example of the control sequence of the diagnostic program (printer test section) of 0LTP in Figure 5. SaO is a configuration diagram of the host shown in Figure 1. FIG. 3 is a diagram illustrating an example of communication between a host and a terminal in the present invention in a normal case. Details are given below.

When a fault occurs in a turn connected to a host via an over-reliable line, the host II will recognize it in one of the following ways.

■ Based on the status notification from the terminal, the host determines that the terminal has failed.

(2) When an abnormality occurs in a predetermined communication V-sequence from the perspective of the host, for example, when a response to a command from the host is not returned within a predetermined time, it is determined that there is a terminal failure.

0 Telephone contact is made by terminal O operator to p1 host operator.

As a result, the host side takes one of the following actions.

(2) By displaying a message on the host's system console according to items (2) and (2), or by item 0, the host operator ggm the above status a and starts 0LTPt.

0LTP is automatically activated by the items O■ and ■.

0LTPti is a program developed for on-line testing, and performs failure analysis by running the diagnostic program stored in the internal storage device item by item.

0LTPt! Once started, the test will determine whether the diagnostic program is executable.

That is, in FIG. 2, a 0 modem loopback test, an O line control unit loopback test, a θ mesh write and read check, etc. are performed. As a result, if the diagnostic program is executable, the diagnostic program in the disk DISK is executed item by item. For example, if a failure occurs in the printer section of the 11i2H IO, if the 0LTP diagnostic program (printer test section) control sequence is programmed as shown in Figure 4, then the first step is to test the printer test. Execute item l, if abnormal, d1
Test item n is executed, and the cause of the failure is determined to be At or B based on the execution result of item n. If item 1 is normal, 11Fi, next item 2t is executed. In this way, by executing the diagnostic program item by item according to the control sequence, the execution results of zero items that can be analyzed for failure are displayed on the system console. When 0LTP finishes running, the analysis results are displayed on the system console. Therefore, the operator of Hoss F and the CEK in charge of the terminal communicate the failure and report the analysis results. Thereby, the CE in charge takes the most appropriate measures according to the content of the fault (for example, running out with the faulty Print F board) based on the above-mentioned analysis result t.

As described above, in the present invention, the CE in charge of the terminal
However, since it is possible to ascertain the specific nature of the failure and the location of the failure, and then proceed to the location of the failure, prompt recovery from the failure has become possible.

Furthermore, since the specific details and cause of the failure are known in advance, there is no need for a specialist CE to go to the site.

If the root cause of the problem remains unknown even after running the above diagnostic program, you can investigate the cause by sending a high-grade diagnostic program that can perform detailed failure analysis from the host to the terminal and running it. I'm excited about what I do. The present invention is useful when the terminal has a limited file/mesh capacity, etc., and only the optimal diagnostic program created based on past failure cases is resident, or when no diagnostic program is resident on the terminal. This is particularly effective in cases where there is no power available.

Also, by preparing a basic diagnostic program on the terminal side in advance, the processing load for transmission is reduced compared to testing while transmitting diagnostic data and programs from the host one by one. .

Furthermore, by executing the diagnostic program step by step for each item, even if the diagnostic program does not operate normally due to a [K failure], a diagnostic prediction column for the host side 5rjIL is set up. And definitely! By executing arbitrary test items according to the situation, detailed analysis becomes possible.

[Brief explanation of drawings]

Figure 1 shows an example of the network configuration, Figure 2 shows l
Figure 111 shows the configuration of the terminal, Figure 3 shows the configuration of the diagnostic program existing in the storage device of the terminal, and Figure 4 shows an example of the OLTPO diagnostic program (printer test section) in gswA. Figure, Iris 5 is the configuration diagram of the host in Figure 1,! lI6
In the event that a drop occurs in the terminal building, the main departure gj
4 is a diagram illustrating an example of a host terminal (M12) communication sequence in FIG. In the j1!2 diagram, M is the modem and FLOPPY is 70
Tsupi disk device, DISK is a fixed disk device *
Z Os a ■o is an input/output device, D is a display device, KB is a keyboard)', P is a printer, 9B
is an operator. In FIG. 5, M is a modem, CPU is a central processing unit,
MEMORY is the main memory, CCU is the communication control unit, P
ERIPHERAL is a peripheral device group, DISK is a fixed disk device, svp is a supervisor (monitor program), 0LTP is an online test program, and C is an operator. v3 Figure V 4 z Figure 5 Figure 95-

Claims (1)

[Claims] (υ When a failure occurs in a terminal connected to a host via an overconfident FIA II, the host sends 5A for each item of the diagnostic program existing in the storage device of the terminal. A terminal diagnosis method characterized in that the terminal is diagnosed when the line control is performed.(2) A patent claim characterized in that the diagnosis program is stored in a storage device of the terminal from the host. Category II (terminal diagnosis method described in Section 11).