JPH01200747A - Interface monitor - Google Patents

Abstract

PURPOSE:To easily extract plural same kind phenomena by storing data when a specific phenomenon designated in advance is generated and the data before generation to an external storing part. CONSTITUTION:Monitor conditions and conditions to read a monitor to an external storing part 5 are set from an operating part 7. Next, when a monitor action start is indicated from the operating part 7, an internal processor 2 sends the conditions of a specific phenomenon and so on to an interface converter 4. The converting part 4 inputs a signal 9 through a detached circuit 3, checks the existence of the generation of the specific phenomenon, and when it does not exist, makes the signal circulate in order to the control information area of an internal storing part 1 and stores it. When the specific phenomenon is generated, a storing to the storing part 1 is continued, and the efficient information of a fixed form is written through an external storing control part 6. Thus, the plural same kind phenomena can be extracted easily.

Description

TECHNICAL FIELD The present invention relates to an interface monitor, and more particularly to an interface monitor that monitors data on a serial interface such as a communication line.

Prior Art Conventional interface monitors of this type monitor control data and data (hereinafter abbreviated as "data") on the interface.
It is a format in which the data is monitored as it is and sequentially stored in internal storage and external storage, and the monitor itself is monitored under conditions given in advance (for example, the occurrence of a parity error).
Alternatively, the monitor was stopped in response to an externally applied signal (for example, a trigger signal). Then, before stopping, the data stored in the internal storage section and the external storage section is reproduced and used for analyzing the phenomenon.

Although the above-mentioned conventional interface monitor was sufficiently effective in -i usage, it had the disadvantage that only one phenomenon could be collected during one use.

In addition, - effective data for investigating and analyzing phenomena in boat fishing is data from a narrow area at and before the occurrence of a specific phenomenon, and compared to other valid data, data in the external storage unit is invalid. There was also the drawback that the data was

Furthermore, if a conventional interface monitor is used for the purpose of collecting multiple samples of a specific phenomenon that occur at long intervals and using those samples as a thread [1] for elucidating other phenomena,
Another drawback is that it requires a human to check whether a specific phenomenon occurs at regular intervals and the monitor has stopped, and if so, to collect data and restart the monitor.

OBJECTS OF THE INVENTION An object of the present invention is to provide an interface monitor that can read and store only data useful for analyzing a specific phenomenon in an external storage unit.

Structure of the Invention The interface monitor of the present invention is an interface monitor that monitors data on a line, and includes storage means for sequentially storing the data, and data in the storage means when a predetermined specific phenomenon occurs. and a storage means for reading and storing data before the occurrence of the specific phenomenon within a predetermined range.

Example The present invention will be described in detail with reference to the drawings.

FIG. 1 is a system diagram that does not show the configuration of an embodiment of an interface monitor according to the present invention. In the figure, an interface monitor according to an embodiment of the present invention monitors a serial signal 9 between interfaces provided in two devices (not shown), and includes an internal storage section 1, an internal processor 2, and a branch circuit. a section 3; an interface conversion section 4;
It is configured to include an external storage section 5, an external storage control section 6, an operation section 7, and a display section 8.

The internal storage section 1 stores the data of the serial signal 9, as well as a control program and control information.

The internal processor 2 operates according to a control program and controls each section at a time R.

The branch circuit section 3 branches the serial signal 9 and sends it to the interface conversion section 4.

The interface conversion unit 4 performs serial-to-parallel conversion on the serial signal input from the branch circuit unit 3 based on instructions given in advance from the internal processor 2 to decode the data, and converts the data into the specified data in the internal storage unit 1. This is used to confirm the occurrence of a specific phenomenon while writing in the specified area.

The external storage section 5 is a floppy disk, a cassette tape, or the like that stores data to be monitored.

The external storage control section 6 performs necessary control regarding the external storage section 5.

The operation unit 7 is a keyboard or the like for instructing the setting of monitoring conditions and the setting of specific conditions for data to be monitored in the external storage unit 5.

The display unit 8 is a CRT or the like that displays data to be monitored.

In this configuration, before starting an operation, first, monitor conditions such as the code unit to be used and the control procedure to be used are set using the operating section 7, and conditions for reading data to be monitored into the external storage section 5 are set. The conditions for not reading the data to be monitored into the external storage section 5 are the conditions of a specific phenomenon (for example, a parity error has occurred in the data on the serial signal 9) and the number of divisions of the subarea of the internal storage section 1 (for example, N sections). ) and the number of sun areas (for example, two) to be written into the external storage unit 5.

The internal processor 2 stores setting values input from the operation unit 7 in a control information area (not shown) in the internal storage unit 1, and at the same time stores address information, etc. for managing subareas of the internal storage unit 1 based on the setting values. Create the necessary management information in the control information area. From then on, it operates according to this information.

Next, the internal storage section 1 will be explained using FIG. 2. The figure shows an example of how to divide and switch the monitor data storage area of the internal storage unit 1.
-2.1-3. . . . indicates that they are managed by dividing them into numbers 1-N. The data to be monitored is 11,1.
-2.1-3. ...11-N, 1-1.12.
. . . are circulated and stored sequentially.

Next, when the operation unit 7 instructs the start of the monitoring operation, the internal processor 2 responds by reading out the monitoring conditions, specific phenomenon conditions, etc. stored in the control information area of the internal memory hoof unit 1, and converts the interface conversion unit 4 Send to. The internal processor 2 then reads address information including the start address and end address of the first subarea 1-1 in the internal storage unit 1 that stores the data to be monitored, and sends it to the interface conversion unit 4 to instruct the monitor operation. . Then,
The interface converter 4 starts operating according to the given conditions.

The serial signal 9 branched by the branch circuit section 3 is inputted to the interface conversion section 4, and the interface conversion section 4 decodes the serial signal 9 under the given conditions, checks whether a specific phenomenon has occurred, and converts it into a specific phenomenon. If no occurrence occurs, data is sequentially written based on subarea 1-1 hair 1 to response information. When the interface conversion unit 4 finishes transferring data to the end address of the sub area 1-1, it notifies the internal processor 2 of the completion of the transfer. The internal processor 2 reads the address information of the sub area 1-2 from the internal storage section 1, sends it to the interface conversion section 4, and instructs it to continue the operation.

After that, the interface converter 4 performs the same operation as 1-2,
1. -3. ..., ], -N, ]-1, Old...
The data is transferred in a circular manner.

In parallel with this operation, the internal processor 2 periodically sends address information for monitor data transfer from the interface converter 4 to the internal storage 1 while the interface converter 4 is sending data to the internal processor 2. Read this to instruct the display section 8 to display the hetator. The display section 8 sequentially reads and displays data from the internal storage section 1 based on the supplied address information.

Next, the operation when a specific phenomenon occurs will be explained.

Now, it is assumed that conditions for reading data to be monitored into the external storage section 5 must be input. The conditions are as follows: ■ The number of subareas in the internal storage unit 1 is N, ■ The number of subareas to be written to the external storage unit 5 is two, and ■ The specific phenomenon is when a pariday error occurs. When the interface converter 4 finishes transferring data to subareas 1-1 and 1-2 and detects the occurrence of a pariday error in the data at point A of subarea 1-3, This information is reported to the internal processor 2. At this time, the shaded area S is in a state where data is stored.

Then, the internal processor 2 reads the subarea number, ie, 1-3, which is currently being transferred from the interface conversion unit 4 from the control information area of the internal storage unit 1, and stores it in the control information area of the internal processor 2 along with the time data read from the timer +14. temporarily memorized. Thereafter, the interface conversion unit 4 transfers data to the end of subarea 1-3 (that is, the end address) in the same way as when the occurrence of a pariday error is not detected. , the interface converter 4 reports this to the internal process/su2.

Then, the internal processor 2 gives the address information of the subarea 1-4 to the interface conversion unit 4 to continue data transfer, and also sends the address information to the external storage control unit 6 in a predetermined format including time data indicating the time when a parity error occurred. information as management information! -j and instructs writing to the external storage unit 5.

External record: [Ibu 5 executes it.

Next, the internal processor 2 sends the address information of the number of subareas given in advance, that is, two (subareas 1-2 and 1-9-1-3) to the external storage control unit 6, and stores it in the external storage + h unit 5. Instructs to write data.

The external storage control section 6 reads data from the internal storage section 1 and writes it to the external storage section 5 according to the instruction.

In this case, internal record 1! : Data is written from the i section 1 to the external storage section 5 in subarea units. Zunawaji, after writing subarea 1-2, subarea 1
-3 is written.

Also, while writing the data in the sub area 1-2 or 1-3 of the external storage unit 5, the control operation of the external storage unit 5 may take time. 1-2 or 1=
If it is necessary to write new data to 3, write new data to 3.
As shown in the figure, the internal processor 2 manages the subareas 1-2 and 1°-3 and writes from 1-4 (mesh area B→C).

The above operations are continued until an instruction to stop the operation is input from the operation section 7 or until the capacity of the external storage section 5 is exhausted. As a result, the external storage unit 5 accumulates data useful for error analysis, that is, data at the time of the error occurrence and data shortly before the error occurrence.

In other words, in the present invention, data necessary for analyzing a specified phenomenon can be collected multiple times for each specified subarea.

It is clear that in the present invention, it is possible to designate the conditions of a specific phenomenon in advance or to perform similar processing by inputting a trigger signal from the outside.

Further, in the present invention, it is clear that the data is processed after performing serial-to-parallel conversion on serial data, or that similar processing can be performed on originally parallel data.

As described in detail, the present invention has the advantage that it is possible to easily collect the same type of phenomenon multiple times by storing only valid data specified in advance in the external storage unit.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing the configuration of an interface monitor according to an embodiment of the present invention, and FIGS. 2 and 3 are conceptual diagrams showing the storage state of data in an internal storage section. Explanation of symbols of main parts■・・・Internal storage unit 2・・・Internal processor 4・・・Interface conversion unit 5・・・External storage unit

Claims (1)

[Claims] (1) An interface monitor that monitors data on a line, including storage means for sequentially storing the data, and data in the storage means and within a prespecified range when a prespecified specific phenomenon occurs. and storage means for reading and storing data before the occurrence of the specific phenomenon.