JPH01180649A - Fault data collection system - Google Patents

Abstract

PURPOSE:To detect and analyze a fault factor in real time by securing such constitution where an IOC controller which detected the working abnormality of an I/O controller activates a forced interruption signal and transferring the contents of control tables and trace memories to the I/O controller to dumping these contents on an external terminal. CONSTITUTION:An IOC controller 7 that detected the working abnormality of I/O controllers 61 and 62 activates the forced interruption signals put on the signal lines 41 and 42 and gives an instruction to both controllers 61 and 62 to transfer the contents of control tables 11 and 12 and trace memories 21 and 22 respectively. When the forced interruption signals are received, the controllers 61 and 62 transfer the contents of said tables 11 and 12 and memories 21 and 22 to a fault memory 3 of the controller 7. These contents collected into the memory 3 are always dumped as necessary on an external terminal 8 via a diagnosis bus signal line 5 in the form of fault information. Thus the fault factor can be detected and analyzed in real time.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a failure data collection method when a failure occurs, and relates to an IO
The present invention relates to a method for collecting failure data transferred to a C control device.

(Prior Art) Conventionally, in a computer system in which an IOC control device and a plurality of I/O control devices are connected via a common bus, when investigating a fault, the point in time when a fault occurs in the I/O control device that is the source of the fault is determined. The operating history of the firmware up until now was completely unknown. For this reason, in the firmware of the engineering/O control device, the cause of the failure has been analyzed by connecting a traceable emulator to the system and conducting reproduction tests.

(Problems to be Solved by the Invention) The conventional data collection method for persons with disabilities described above connects an emulator to the system consisting of the engineering/O control device that is the source of the failure when a failure occurs, and prepares for the reproduction of the failure. Therefore, there is a drawback that the discovery and analysis of the cause of the failure is delayed.

An object of the present invention is to provide a control table that holds an internal status at the time of failure in each of a plurality of I/O control devices;
In addition to providing a trace memory that stores the running trajectory of the firmware, a fault memory is provided in the IOC control device, and when the IOC control device detects an operational abnormality on the I/O control device side during system operation, it immediately activates a forced interrupt signal. By having the I/O control device transfer the contents of the control table and trace memory mentioned above, and further dumping the above contents onto an external terminal via the diagnostic bus, the above drawbacks can be removed and the cause of the failure can be discovered and analyzed. An object of the present invention is to provide a fault data collection method configured to quickly perform the following steps.

(Means for Solving the Problems) A failure data collection system according to the present invention is configured to include a plurality of machine/o control devices, an IOC control device, and a diagnostic bus.

The plurality of I/O control devices have a control table that holds the internal status at the time of failure, and a trace memory that stores the firmware sequence up to the time of failure, and are used to control the I/O devices. be.

The IOC control device includes a fault memory that collects and stores fault information from each of the plurality of I/O control devices.
This is for controlling the /O control device.

When an abnormality is detected in the I/O control device, the diagnostic bus sends a forced interrupt signal corresponding to the I/O control device that instructs the I/O control device to transfer the contents of the control table and trace memory to the faulty memory, as well as a forced interrupt signal to the faulty memory. It is used to transfer and dump stored data to an external terminal.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of a failure data collection method according to the present invention. In Figure 1, 11.12
are the control tables, 21.22 are the trace memories, 3 are the fault memories, and 61.62 are the I/Os, respectively.
7 is an IOC control device, and 8 is an external terminal.

In FIG. 1, control tables 11 and 12 of I/O control devices 61 and 62 hold dynamic internal status information when the own firmware runs, and trace memory 2 cyclically traces the running trajectory of the firmware up to the point of failure. to be memorized. The IOC control device 7 is equipped with a fault memory 3 for collecting and storing fault information from the F0 control devices 61, 62.

A forced interrupt signal line 41.42 is provided between the IOC control device 7 and the I/O control device 61.62, and a diagnostic bus signal line 5 is provided between the IOC control device 7 and the external terminal 8. There is.

Next, the operation of the failure data collection method based on the above configuration will be explained.

In FIG. 1, the I/O control device 61 during system operation
．． 62, the IOC control device 7 immediately activates the forced interrupt signal on the signal lines 41 and 42. This operation causes the control tables 11 and 12 and the trace memory 2 to be
Transfer of the contents of 1.22 is instructed. The forced interrupt signal is set as the interrupt signal with the highest priority in the I/O control devices 61 and 62. I/O that accepted the forced interrupt signal
The control devices 61 and 62 transfer the contents of the control tables 11 and 12 and the trace memos 21 and 22 to the fault memory 3 inside the IOC control device 7.

As mentioned above, the fault memory 3 inside the IOC control device 7
The contents of the control table 11.12 and trace memory 21.22 collected can be dumped onto the external terminal 8 via the diagnostic bus signal line 5 at any time as fault information.

(Effects of the Invention) As described above, the present invention provides the I/O control device with a control table that holds the internal status at the time of failure and a trace memory that stores the running trajectory of the firmware, and also provides IOC control. A fault memory is provided on the equipment side, and when the IOC controller detects an operational abnormality on the I/O controller side during system operation, it immediately activates a forced interrupt signal, causing the I/O controller to connect the control table and trace memory described above. By transferring the contents and further dumping the above contents onto an external terminal via the diagnostic bus,
It becomes possible to analyze failure information in real time,
This has the effect of simultaneously increasing the efficiency of debugging work and simplifying fault investigation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of a failure data collection method according to the present invention. 11.12...Control table 21.22...Trace memory 3...Fault memory 61.62...I/O control device 7...IOC control device 8...External terminal 41.42. 5...Signal line patent applicant NEC Corporation

Claims (1)

[Claims] a plurality of I/O control devices for controlling I/O devices having a control table that holds an internal status at the time of failure occurrence and a trace memory that stores firmware sequences up to the time of failure occurrence; an IOC control device for controlling the I/O control devices, including a fault memory for collecting and storing fault information from each of the I/O control devices, and an IOC control device for controlling the I/O control devices; When a failure occurs, a forced interrupt signal corresponding to the I/O control device instructs the I/O control device to transfer the contents of the control table and the trace memory to the faulty memory, and data stored in the faulty memory to an external terminal. and a diagnostic bus for dumping data.