JPS60117997A - Display control method - Google Patents

Abstract

PURPOSE:To perform an optional display through a display of an optional operator station by transferring a display instruction corresponding to a desired display to a designated operator station at the reception side in accordance with the transfer command input operation of an optional operator station. CONSTITUTION:A microprocessor 11 decides the presence or absence of designation to an address of the reception side, i.e., the presence or absence of the input given from a key beta. If this input exists, the presence or absence of the input of a display instruction, i.e., the input given from a key alpha is decided. If this input exists, the display instruction is transmitted to a communication line together with an address signal which designates an operator station of the reception side. This address signal is written to a prescribed area 12a of a memory 12 at an operator station OC1 corresponding to a designated address and then stored to a prescribed area 12b to perform the corresponding display. In other words, the display instruction sent from an operator station OC2 is treated equivalently to the display instruction supplied from the key alpha of the OC1 itself at the OC1 to be displayed.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a system in which a plurality of operator stations, each equipped with a display device such as a CRT, are connected via a communication line, such as in a plant control system. This invention relates to a display control method in a multi-station system.

[Prior art]

For example, when controlling a plant, an operator needs to know a lot of information, and when using a large number of display devices for that purpose, the conventional display control method is to use one computer C0M1 as shown in Figure 1. Multiple operator stations (operator consoles) from OCI
There is a method to give screen information to ~0Cn2. In this case, desired information can be called up and viewed on the display screen of each operator station by operating the keyboard at each operator station. For example, by operating the common keyboard KB3, the switching control circuit 4 For example, by switching the output from the operator station OCI, the screen displayed on the operator station OCI can be easily switched and displayed on the OCZ side. In the M1 diagram, 5 is a communication line, and 6 is a controller (controller) CONT that directly controls input/output to the process.

In this method of controlling multiple screens with one computer, cross-display can be freely performed between display devices, but as the number of display devices increases, the processing power that the computer 1 that controls them must have increases. This will inevitably lead to increased costs. Furthermore, if a computer or other common hardware fails, all operator stations become uncontrollable and no display or operation can be performed.

On the other hand, in a configuration in which a plurality of independent operator stations 2 are interconnected via communication lines 5 as shown in FIG. 2, the above-mentioned drawbacks are eliminated. However, on the other hand, there is a drawback that the following four-screen display cannot be easily performed. In addition, in FIG. 2, 7 is a common memory, and each operator station has a
When a display command is input from the keyboard 1°, necessary information is read from the controller 6 and memory 7 in response to the display command and displayed.

That is, in the configuration shown in FIG. 2, the operator stations are arranged as shown in Figure 3, for example, but if you want to move the screen displayed on the display device 2a of the operator station OCI to oc3, for example, the OC3 In order to create the same screen as OCI, the operator
3 and independently operate the keyboard 2b to input display commands similar to those performed in OCI. In addition, in a digital PBX, etc., all information constituting the screen is transferred to OC2 using the telephone line.
Although it is possible to transfer the information directly to the computer, the amount of information to be transferred is large, the time burden is large, and the load on the microprocessor is also high.

[Object and structure of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a multi-station system composed of independent operator stations, while allowing any display to be displayed at any operator station by operations at any operator station. An object of the present invention is to provide a display control method that can be easily performed on a display device.

In order to achieve such an object, the present invention transfers a display command corresponding to a desired display to a designated receiving operator station in accordance with a transfer command input operation at an arbitrary operator station. The receiving operator station receives the display command and performs display accordingly. Hereinafter, the present invention will be explained in detail using Examples.

〔Example〕

Figure 4 shows the operator stage used in the present invention.
There is a block diagram showing an example of the configuration of the system.

In the figure, 11 is a well-known microprocessor unit MPU, 12 is a memory, and 13 is a keyboard (2 in FIG.
b), 14 is a screen generator, 15 is a display device consisting of a CRT display (corresponds to 28 in Figure 3),
16, 17, and 18 are interfaces, and 19 is a bus.

Here, the memory 12 has an area 12B for inputting screen display commands and an area 12b for storing screen display commands, although they do not need to be fixed areas.

The keyboard 13 also includes a key α1aa for inputting normal display commands as shown in FIG. 5, as well as a key β13 for specifying each operator station for inputting transfer commands.
b It is equipped with a key γ13e for specifying the machine itself.

In the above configuration, for example, when an operator is at operator station OC2 and wants to monitor the display, for example, the output status of a specific pulp, he/she also wants to display other displays, such as the status of the entire plant, on the adjacent OCI. , the operator first presses the key β corresponding to OCI on the keyboard 13 of OC2 to designate the receiving operator station OC1, and then presses the key α to input a predetermined display command corresponding to the display desired to be displayed on OCI. . In this case, the microprocessor 11 of OC2
performs processing operations as shown in FIG.

That is, the microprocessor 11 determines whether there is an input from the receiving side (step 101), and if there is an input, it determines whether there is a display command input or input from the toe 9 key α (step 102). If so, the display command is sent to the communication line together with an address signal specifying the receiving operator station (step 103).
. This signal is written in a predetermined area 12m of the memory 12 at the operator station OCI corresponding to the designated address, and is further stored in a predetermined area 12b for display accordingly. That is, O.C.
The display command sent from the OCI 2 is handled in the OCl in the same way as the display command input from the key α of the OCI itself, and display processing is performed. In this embodiment, since the display command is input from the OC2, the OC2 itself becomes the transmitting operator station.

The above is an example of transferring a display command input at any operator station to any other operator station and causing the corresponding display to be performed. It can also be displayed on the station.

For example, if an operator is at OC2 and wants to display the screen displayed on OCl on OC2, he first presses the key γ to designate the OCZ itself as the receiving operator station, and then presses the key β to designate the operator 90C1. In this case, the microprocessor 11 of oc2 performs processing operations as shown in FIG.

That is, the microprocessor 11 determines whether or not its own device has been designated as the receiving operator station and whether or not the key r has been pressed at any time (step 201). If so, the microprocessor 11 selects the key β. Step 202), requesting the operator station OC1, which is the designated sending side, to send out the display command it holds;
When the display command is received (step 203), it is read (step 204) and displayed accordingly (step 205).

Conversely, if the display of the own device is displayed on another operator station - and the operator is at OC2 and the display is displayed on another operator station, e.g.
The C6 display can also be called up and viewed at a third operator station, for example an adjacent OCI. In the former case, the operator, for example, first
Press the key β corresponding to I, then press the key γ. In the latter case, after the key β corresponding to OCI, O
Press the key β corresponding to C6. microprocessor 11
performs processing operations as shown in FIG. 8, for example.

In FIG. 8, the microprocessor tI H-1 determines whether the receiving side address is specified or not (Step 3o1), and determines whether the key β has been pressed. is specified or not,
is pressed or not (step 302), and if specified, the display command stored in the predetermined area 12b of the memory 12 of the own device is read out and communicated with the address signal specifying the receiving operator station OCI. (Step 303) o On the other hand, if the operator station designated as the transmitting side is not the own device, that is, if there is no input from the key γ (Step 302), another In step 304), it is determined whether the operator station has been specified or the second key β has been input.
If there is no designation, it is determined whether there is any further display command input or not, and whether or not there is input from the key α (step 3).
05), if there is an input, this is exactly the same case as explained in FIG. 6, so the display command is sent to the communication line along with the address signal specifying the receiving operator station OCI as described above. (Step 3
06) o On the other hand, if another operator station is specified as the sending side, then the second key β
is pressed (step 304), the microprocessor 11 of the OC2 reads the display command from the transmitting operator station OC6 (step 3o7) in the same manner as described in FIG. It is sent to the communication line together with an address signal specifying the receiving side operator station OCI (step 3).
08).

As described above, when a display command input at an arbitrary operator station, for example, OC2, is transferred to another operator station, for example, OCI, according to a transfer command input operation at an arbitrary operator station, for example, OC2, or when a display command held by OCI is transferred to the own device OC2. , conversely, when transferring display commands held by OC2 to OCI, and transferring display commands held by a third operator station, for example OC6, to OC
An example of an execution program of the microprocessor 11 in a case where it is possible to handle any of these transfer modes is shown in FIG. 9 in relation to manual key operation.

That is, in FIG. 9, if the key β is inputted (step 401) and the key r is subsequently inputted (step 402), this means that the own device is designated as the transmitting operator station. Then, the microprocessor 11 reads a display command corresponding to the currently displayed screen of its own device from a predetermined area 12b of the memory 12 (step 7'403), and specifies the receiving operator station for the display command. It is sent to the communication line together with the address signal (step 4o4).

If the key r is not input (step 402) and the second key β is input (step 405), the display command held by the transmitting operator station corresponding to the key β is read. Step 406), and sends the display command and an address signal specifying the receiving operator station to the communication line (Step 4o7).

If the second key β is not input (steps 4-5) and the key α is input (step 408), the microprocessor 11 reads the display command corresponding to the input of the key (step 409). , sends the display command to the communication line together with an address signal for the receiving operator station (step 410).

On the other hand, if the key β is not pressed first and -K (step 401) and the key r is pressed (step 411)
Since the own device has been designated as the receiving operator station, if the key β is subsequently input (step 412), the microprocessor 11 retains the designated transmitting operator station when the key β is input. A display command is read (step 413), and display is performed according to the display command (step 414).

After key γ is input (step 411), key β is not input (step 412), or key β and key γ are not input (steps 401 and 411), and the S-group where key α was input is (Step 415), MicroProcera? 11 simply reads the display command corresponding to the key input (step 416), stores the display command in the memory area 12b, and performs display on its own device according to the display command (step 417).

In each of the above-described embodiments, when the display command of the second operator station is further transferred to the third operator station, the second operator station is first operated by the first operator station. Although the present invention is limited to this method, the first operator station that has received the display command requests the operator station to send the display command and sends the display command again to the third operator station. It is not something that will be done. For example, the first operator station may request that the second operator station receive and send the display command directly to the third operator station, or alternatively, the third operator station However, it may also require that the display instructions be read from the second operator station.

In addition, in the embodiment described above, in addition to the key β for specifying each operator, a key γ for specifically specifying the own device is provided separately, but this is not provided separately, and the key β corresponding to the own device is used instead. Of course, it is also L.

Furthermore, in the embodiment described above, it was assumed that any operator station could perform the transfer command input operation, but one
Alternatively, a transfer command input operation may be provided only at two or more predetermined operator stations, and the transfer command input operation for display commands may be performed only at the operator stations.

〔Effect of the invention〕

According to the present invention, in accordance with J') described above, a display command is transferred in response to a transfer command input operation performed by specifying a transmitting side and a receiving side operator station at an arbitrary operator station. Tsumashi,
By treating display commands sent from other independent operator stations via communication lines as equivalent to display commands input directly from the own device's own device, cross-display between operator stations can be freely realized. .

Therefore, the operator can freely display a desired screen on a desired operator station from any operator station, and can simultaneously monitor a plurality of necessary screens without moving his or her body.

Further, control operations in the processor unit can be appropriately distributed between the receiving side and the transmitting side, and the load on the processor units can be distributed.

[Brief explanation of drawings]

Figure aEi is a block diagram showing an example of the configuration of a conventional multi-station system, and Figure 2 is a block diagram of a multi-station system showing an embodiment of the present invention.
Fig. 3 is a diagram showing an example of the arrangement of operator stations, Fig. 4 is a diagram showing an example of the configuration of the operator station, and Fig. 5 is a diagram showing an example of the arrangement of operator stations.
6 is a flowchart showing an example of an execution program in the microprocessor, and FIGS. 7 to 9 are flowcharts showing other examples of the execution program in the microprocessor. 2...1111 Operator Stesimin, 2a. 15. Life...Display device, 2b, 13...Keyboard, 5...Communication line, 11@...Fist microprocessor, 12--.Memory, 12aIII+@.Display command input canister, 12b. ...display command storage area, 13a
...Display command input key α, 13b...Transfer command input key β, 13c...Transfer command input key γ
0% Measurement Applicant Yamatake Honeywell Co., Ltd. Agent Masaki Yamakawa (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) In a multi-station system in which a plurality of operator stations, each equipped with a memory that stores a display command and a display device that performs display according to the display command, are interconnected via communication lines, at least one
The two operator stations are equipped with an operator for display command input and an operator for inputting transfer commands as input operators. , transfers the display command held by the designated transmitting operator station or the display command corresponding to the display desired to be displayed on the receiving operator station to the designated receiving operator station, and executes the display command at the receiving operator station. A display control method characterized by performing a corresponding display. (2) The transmitting operator station sends the display command it holds or the input display command and the address signal corresponding to the receiving operator station to the communication line, and the operator station designated by the address signal, 2. The display control method according to claim 1, wherein the display command is written in a predetermined memory area and the display is performed according to the display command. (3) The display control method according to claim 1, wherein the receiving operator station reads a display command from a predetermined memory area of the transmitting operator station and performs display according to the display command.