JPH08287028A - Distributed controller - Google Patents

Abstract

PURPOSE: To provide a distributed controller facilitating factor analysis when an alarm or the like is generated. CONSTITUTION: At the time of receiving an alarm and an event signal from an arithmetic and control unit(ACU), alarm/event monitoring software 31 logs these signals in a logging server 34, and when an operator executes prescribed operation in the process of application 32, the operation is logged in the server 34 as operation history and the operation history can be transmitted/received between operator consoles 2. Alarm information, event information and the operation history are time-sequentially stored in a magnetic disk 36, and when necessary, the information is displayed on an alarm display 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed control device, in particular an operator console, which triggers a signal taken from the arithmetic and control unit to log alarm information and event information, display a list on the screen, or display on a printer. The present invention relates to a decentralized control device having a function of printing and outputting.

[0002]

2. Description of the Related Art As shown in FIG. 3, a general distributed control system includes a plurality of arithmetic and control units 1 _-1 , ..., 1 _-n for controlling a plant to be controlled, and an operator console section 2. The operator console 2 is provided with a CPU 3, a RAM 4, a magnetic disk 5, a communication interface 6, a CRT display 7, an operating keyboard 8 and a printer 9 in hardware.

In the distributed control device as described above, the operator console has conventionally logged the alarm information and the event information triggered by the signal fetched from the arithmetic and control unit, displayed the list on the screen, and printed it on the printer. It has a function to do. The alarm report is a signal issued when, for example, the sensor output of the plant exceeds a predetermined threshold value range, or the rate of change thereof exceeds a predetermined value, and the event report is output from a certain process in, for example, sequence control. When moving to the next process, etc., a signal indicating that or CR
This is a signal that triggers driving on the T display.

Further, in an actual distributed control device, while the monitoring screen is being displayed on the CRT screen of the operator console, an alarm definition signal and an event definition signal are turned ON / OFF from the arithmetic and control unit to generate an alarm on the screen in real time. In some cases, an event is notified and alarm and event occurrence information can be stored in the magnetic disk device of the operator console as shown in FIG. In this case, the history of occurrence of alarm reports and event reports can be displayed in a time-series list form on a dedicated screen called an "alarm display" during operation analysis. It is also possible to print this list on a printer connected to the operator console.

[0005]

In the conventional distributed control device described above, the driver can know the history of occurrence of alarms and events from the "alarm display" screen and the printing result, but also the cause. It is not possible. Based on trend information such as "historical trend" on the CRT screen of the operator console and recording results from recorders, etc., "factor analysis can be performed by tracing the process amount, operation amount, control amount, etc. before and after the occurrence of an alarm or event. However, the operator's operation on the operator console had to rely on the driver's memory, and when the plant was being monitored by multiple operator consoles. However, there is a problem that it is necessary to investigate by checking the memories of the operations performed by a plurality of drivers, which is complicated and difficult to perform accurate factor analysis.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a distributed control device capable of easily analyzing the cause of an alarm or the like when it occurs.

[0007]

The distributed control device of the present invention comprises a plurality of arithmetic and control units and at least one operator console. The arithmetic and control units and the operator consoles communicate with each other. If possible, logging means for logging alarm and event reports and operator operation history on the operator console, and alarm and event reports and operation history on the operator console screen. It is provided with a display means for displaying in series in series and / or a printer for printing alarm information, event information, and operation history.

In this distributed control device, the operation history of the driver is logged in addition to the alarm information and the event information, and the alarm information, the event information and the operation history are displayed in time series on the display screen of the operator console. , Or printed out.

[0009]

The present invention will be described in more detail with reference to the following examples. FIG. 1 is a block diagram showing the configuration of a distributed control device in which the present invention is implemented. This distributed control device is composed of a plurality of arithmetic and control units 1 _-1 , ..., 1 _-n and a plurality of operator consoles 2 _-1 , ..., 2 _-N . The arithmetic and control units 1 _-1 , ..., 1 _-n and the operator consoles 2 _-1 , ..., 2 _-N are communicable by a control network 21, and the operator consoles 2 _-1 , ..., 2 _-N are connected by a communication network 22.

Each operator console 2 _-1 , ..., 2
_-N has the same hardware configuration as the operator console 2 shown in FIG. Moreover, each operator console 2 _-1 , ..., 2 _-n has a software function.
As shown in FIG. 2, an alarm, event monitoring software 31, an application 32, a management information area 33, a logging server 34, an alarm display 35 and a magnetic disk 36 are provided. Among these software functions, the alarm, event software 31, application 32, management information area 33, and logging server 34 are executed by the CPU 3 and RAM 4.

In the distributed control system of this embodiment, alarms and events are detected by the alarm and event monitoring software 31 of the operator console. However, unlike the conventional case shown in FIG. 4, logging is not directly performed on the magnetic disk, but a logging command for notifying the occurrence of an alarm or an event is sent to the logging server 34.

As for the operation history, the application software 32 operating on the operator console sends an operation history logging command to the logging server 34 when the driver performs a predetermined operation. On the other hand, the CPU 3 in the operator console operates the logging server 34 that realizes the function of recording alarm information, event information, and operation history information on the magnetic disk 36.

The logging server 34 is run in parallel with other application software running on the operator console by multiple programming. Further, the logging server 34 accepts alarm notifications, event notifications, and logging commands relating to operation history from a plurality of applications via the inter-task communication means specified by the CPU 3 in the operator console, and the magnetic disk 36 is actually time-series. To record. Further, the logging server 34 filters only the operation history from the received logging command, and transmits it to the operator console other than the own operator console by the predetermined communication means of the communication network 22 based on the plant management information area 33. The operation history logging command received via the communication network 22 between the operator consoles is stored in the magnetic disk 36 like the command received in the CPU 3, but is not sent to another operator console again.

On the screen of the alarm display 35, the logging server 34 is requested to retrieve the logging information by the communication means, the information is received as a reply, and the CRT is displayed.
It is displayed on the screen of the display 9. In the distributed control system of this embodiment, as described above, the alarm / event monitoring software 31 monitors the alarm and event reports from the arithmetic and control unit, and if there is a signal for them, it is logged in the logging server 34 and the application 32 is used. More predetermined operation history of the driver is logged in the logging server 34,
Both are stored in the magnetic disk 36. In addition, the operation history from other operator consoles is also recorded in the logging server 3
The data is held on the magnetic disk 36 via No. 4. as a result,
The operation history of the driver including the alarm report, the event report, and other operator consoles is stored in the magnetic disk 36 in time series. Then, these time-series data are displayed on the alarm display 35 or printed out by a printer in real time or as needed.

In the above embodiment, the operation history information is transferred to another operator console at the same time as the logging command and the operation history is saved on the other operator console side, but instead of this, another operator console is used. When the alarm display 35 is displayed, the history information is not transferred to the communication network 22 from another console.
You may adopt the method of collecting information via.

As another method, the alarm software, the event data, and the operation history information are recorded on the magnetic disk while the application software running on the operator console performs exclusive control, so that the plurality of operator consoles can be operated. Although the method of storing and referring to information is complicated, it is still feasible. Furthermore, FIG.
In the above, even if the control network 21 is provided with the function of the communication network 22, the same function as that of the above-described embodiment can be realized.

[0017]

According to the present invention, in addition to the alarm information and the event information, the operation history of the operator of the operator console is also logged, and the alarm information, the event information and the operation history are displayed in time series or printed out. Since it is possible to do so, it is possible to accurately grasp the driver's operation history before and after the occurrence of an alarm or event, and it is possible to perform post-mortem analysis accurately and easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a distributed control device in which the present invention is implemented.

FIG. 2 is a block diagram showing a software functional configuration of an operator console of the distributed control apparatus according to the embodiment.

FIG. 3 is a block diagram showing a schematic configuration of a general distributed control device.

FIG. 4 is a diagram for explaining logging of alarm information and event information in the distributed control device.

[Explanation of symbols]

 1 arithmetic and control unit 2 operator console 31 alarm and event monitoring software 32 application 34 logging server 35 alarm display 36 magnetic disk

Claims (1)

[Claims] 1. A distributed control device comprising a plurality of arithmetic and control units and at least one operator console, wherein the arithmetic and control units and the operator consoles can communicate with each other. Logging means for logging information and operator operation history on the operator console, and display means for displaying alarm information, event information, and operation history on the operator console screen in chronological order, and / or , Alarm report, event report,
A distributed control device comprising a printer for printing operation history.