JPS61114340A - Back-up system of operator's console - Google Patents

Abstract

PURPOSE:To attain the back-up to an optional operator's console by setting another operator's console under a stand-by state independently of the operator's console allocated to each plant. CONSTITUTION:An instrumentation system consists of an operator's console 11 connected to a communication circuit 21 and controllers 31-3n. While another instrumentation system includes an operator's console 12 connected to a communication circuit 22 and controllers 41-4n. These two systems take their share of the control of a plant to be controlled. If either one of consoles 11 and 12 has a fault, the 3rd operator's console 100 is connected to both circuits 21 and 22 via a circuit switching unit 103 to back up the faulty console.

Description

[Detailed Description of the Invention] [Utilization of the Invention: Minute Hand] Operation V of a distributed quantity instrumentation system applied to process automation, factory automation, etc.
Regarding the TAZ console.

[Background of the invention]

When installing an instrumentation system that connects the operator's console and the controller via a communication line in each target plant, the operator's console may malfunction.
Plant operation and monitoring functions stop. To back up this, it is possible to connect one more operator's console to the same communication line, but it is uneconomical to connect one operator's console to each target plant. Therefore, a need has arisen to incorporate one common backup Operator V-Taz console that spans multiple networks.

[Purpose of the invention]

The purpose is to connect an operator's console as a common station spanning multiple networks, and to back up its functions in the event of a failure of any one of the other n operator's consoles.

[Summary of the invention]

A line selection switch is provided between one common operator's console and the plurality of networks, allowing any line to be connected to the operator's V-Taz console,
The auxiliary storage device of the operator's console stores information for all lines regarding the monitoring and operation of the distributed instrumentation system connected to each line, and stores the information for the plant corresponding to the line selected by the selection switch. One-to-n backup method that enables monitoring and operation.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 4.

FIG. 1 shows the configuration of a distribution board instrumentation system connected by one communication line. In FIG. 1, reference numeral 10 denotes an operator's console, which is connected to a communication port 1120 by controllers 31, 32 . ... 3n, and has the function of monitoring and operating the status of the gas system by exchanging data with each controller. FIG. 2 shows an example of the configuration of a system to which the present invention is applied.

In FIG. 2, an operator's console 11 and controllers 31, 32, . . . are connected to a communication line 21.
3n, an operator's console 12 and controllers 41, 42 . . . which are connected to a communication line 22; ...An instrumentation system consisting of 4n,
The control of each plant to be controlled is shared. The present invention connects the third operator's console 100 to the communication lines 21 and 22 via the line switching unit 103 in order to back up the function of the two operator's consoles 11 and 12 when either of them fails. It is a method. The auxiliary memory 101 in FIG. 2 is used to store definition information necessary for monitoring and operating all the plants to be backed up, divided into plant units. In the event that the operator's console 11 malfunctions, the operator's console 100 can be connected to the communication line 21 using the switch in the line switching unit 103, so that the operator's console corresponds to the plant operator in the auxiliary memory 101. This allows plant personnel to monitor and operate the control status by reading out information about the system. Figure 2 shows
Although an example of a system configured with two communication lines is shown, the same concept can also be used to increase the number of communication lines.

FIG. 3 shows the line switching unit l-103 and the communication line 21.
22 and the connection method with the operator's console 100. Switches 9W1 and 8W2 in 103 select communication lines 21 and 22, and when the switch contacts are ON, the corresponding communication lines and the operator's console are connected.

8W1 and 8W2 are configured to select one point with boost priority so that they are not turned on at the same time. Also, within 103 (7
) Contacts SGI and SG2 are interlocking contacts with t'L8W1°SW2, respectively, and when sWl is ON, SGI is also ON and null. 3G1,802 is operator's console 100
This signal is input to , and is used to determine whether the b deviation of the communication line 21°22 is connected to 100 or not.

FIG. 4 shows the file layout of the auxiliary storage device 101 attached to the operator's console 100K.

Reference numerals 51 and 52 indicate information files necessary for monitoring and operating Plant A and Plan) B connected to communication lines 21 and 22, respectively. That is, in FIG. 3, when SWl is turned ON, contact SG1 is turned ON. The processing program in the operator's console judges this signal and performs processing based on the information in the file 51 of FIG. In addition to the operator's consoles assigned to each plant as described above, one operator's console is also installed in a standby state, and backup is provided by switching a manual switch in the event of a failure.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a distributed instrumentation system, Fig. 2 is a block diagram of a system to which the present invention is applied, Fig. 3 is a line switching unit according to the present invention and its connection diagram, and Fig. 4 is a backup operator's console. FIG. 2 is a diagram showing file allocation in the auxiliary storage device of FIG. 10.11.12...Operation V-Taz Console, 20
．． 21.22...communication line, 31,32. ...3
n, 41 z' 2 m... 4n... Controller, 100... Backup Operator V-Taz console, 101... Auxiliary storage device, 103...
Line switching unit, 51, 52. ...t...File corresponding to the plant.

Claims (1)

[Claims] 1. In a distributed instrumentation system that connects the controller and the operator's console with a communication line, in a configuration where the operator's console is distributed in each controlled plant,
A backup method for an operator's console, characterized in that one backup operator's console is further provided to back up the functions of any operator's console in the event of a failure.