JPS6075946A - History output device - Google Patents

Abstract

PURPOSE:To analyze easily the cause of an abnormal processing by printing out only the history of execution with which an abnormal state is through. CONSTITUTION:A controller 1' sends the career data to a history memory 4' via a data bus 3 for each execution of an instruction and delivers a command for storage with a history output signal 12'. When the execution is through normally with a series of instructions, the controller 1' sends a normal end signal 14' to a history print controller 2' to inform that the unit control is normal. When an abnormality is detected during the execution of an instruction, the controller 1' sends an abnormal end signal 15' to the controller 2'. Then the controller 2' gives a command to the memory 4' to read out the execution history of instructions following an immediately preceding control start signal 16'. The history of execution is read out via the bus 13' and printed by a history printer 3'.

Description

Detailed Description of the Invention This) ie; hJ relates to the history output device of the electronic h1° computer for control. In the control electronic computer, the execution history for each unit control where multiple instructions are combined and have meaning. There is a history output device that prints out information.

Conventionally, all control statuses for each unit control were printed out on a history output device, regardless of whether they ended normally or abnormally.

FIG. 1 is a block diagram showing a conventional history output device.

Each time the control device 1 executes a unit control such as one consisting of a plurality of commands, it sends history information to the history printing device 2,
Printout is performed on the printing device 3.

With such a history printing device 61, in order to record the execution history of every unit control, when the unit III control of prediction is performed, a printout of "Thank you" is generated. Even if the execution history of abnormal terminations is printed out, the execution history of abnormal terminations will be overlooked unless the output is monitored, especially with marks. Furthermore, even if an abnormal execution history is detected from the history printout of a control device that controls multiple controlled devices at the same time, the history printout also includes counter-history at other stops, so there is no error. In order to analyze the execution results, it is extremely difficult to extract from the execution history of the control device only the execution history of the controlled device that is associated with abnormal execution results. Even if you try to investigate one hour's worth of history printouts from a control device that processes three units of control per second, it is very difficult to extract the desired history printout from among about one history printout. It is a difficult task.

These problems are caused by the fact that all execution histories are printed out regardless of whether they ended normally or abnormally.

The present invention eliminates the above-mentioned drawbacks and provides an execution history output device that prints out only abnormally terminated execution histories of unit controls consisting of a plurality of instructions.

Next, the present invention will be explained in detail using the drawings according to an actual MfI example.

2 to 4 are a block diagram and a timing chart, respectively, of a history output device for explaining the present invention.

In FIG. 2, an arithmetic device 2' receives an input signal 10', performs arithmetic processing necessary for control, and outputs an output signal 11' for controlling a controlled device (not shown).

Next, the operation will be explained with reference to FIGS. 3 and 4.

The data bus 13' includes a control device 1', a history storage device 4',
This is a data bus common to the history printing control device 2', and is used for data transfer between each device. Arithmetic device 2' sends history output signal 12' to history storage device 3' instructing storage of control data on data bus 13'. The normal end signal 14', the abnormal end signal 15' and the control start signal 16' are control signals of the arithmetic unit 2' for the history printing control device 2'. The history printing control device I'I-2' reads the data from the history storage device 4' via the data bus 3 in response to the history data read command 21', and writes the history data 2 to the history printing device 3'.
Print 0'. The control device]' sends a control start signal 16' to the history printing control device 2' at the start of unit control A, which has a meaning consisting of multiple commands as shown in Fig. 3, and the commands to be executed from now on are unit control commands. Indicates that Next, each time the control device 1' executes a command, it sends history data to the history storage device 4' via the data bus 13' and instructs it to be stored in response to the history output signal 12'.

When the execution of a series of commands is completed normally, the control device 1' sends a normal end signal 14' to the history printing control device 2', notifying that the unit control has ended normally.

Next, the control device 1' starts executing unit control B in the same manner.

If an abnormality is detected while executing the second command, control device 1
' sends an abnormal end signal 15' to the history printing control device 2'. The history printing control device 2' instructs the history storage device 4' to read the execution history of the commands after the immediately preceding control start signal 16', reads out the execution history via the data bus 13', and prints it on the history printout 3'. do.

According to the present invention, as is clear from the above description, when an abnormal termination occurs, it is possible to obtain an execution history up to the abnormal termination of a unit control having a series of meanings consisting of a plurality of instructions.

As explained in detail above, according to the present invention, when the calculation of the control device terminates abnormally, it is possible to obtain not only the state and data at the time of the abnormal termination but also the execution history of the unit control consisting of a series of instructions. It is very effective for analyzing the causes of abnormal processing.

[Brief explanation of drawings]

What about figure 1? FIG. 2 is a block diagram of an embodiment of the present invention. Fig. 3 is an operation flow (12'I), Fig. 4 is a timing chart of the device shown in Fig. 3. 1.1'...control device, 2,2'...history printing control Device, 3.3'...History printing device, 4'
...nril ", storage device, 10.10" ...
・Input signal 11.11'...Output signal, 12
゜121...History output signal, 13.13'-...
...Data bus, 14'...Normal end signal, 1
5'...Abnormal termination 1, 16'-...Control start signal, 20.20'...History data, 21
′・・・Historical data read command 1゜Deputy Rikishi Uchiku Kitaguchi,′・・Yo′・

Claims (1)

[Claims] means for outputting history information for each first control piece;
A control means having a means for outputting a control start signal for each function group consisting of the j units on the open side of the extraction E31, and a means for outputting a normal end or abnormal end each time the function group ends;
1,000 class for storing history information, and means for reading history information of the function group that has terminated abnormally from the means for storing previous 6G history information and printing it out according to ii+ abnormal termination output. History output device for control computer.