KR101920969B1 - Display device and display method - Google Patents

Abstract

An object of the present invention is to improve convenience for an operator in a display device.
The display device includes a rank regulation information storage section 10 for storing a regulation for determining an alarm rank, an information acquisition section 14 for periodically acquiring information of all control loops, Based on the acquired regulation and the alarm information in the device to be controlled and the information acquired by the information acquisition section 14, the control loop which is the object of the specification of the alarm rank is extracted and the alarm rank of the control loop is determined according to the regulation A loop information display control section (12) for displaying on the display device (15) display target information relating to a control loop of the display object in the device to be controlled, a display control section And an alarm ranking display control section 13 for displaying, in the loop, the alarm ranking of the control loops for which the alarm ranking determination section 11 is subject to the specification of the alarm ranking.

Description

DISPLAY DEVICE AND DISPLAY METHOD [0002]

The present invention relates to a display device for receiving information and alarm information on a control loop to be displayed from a general-purpose controller for controlling an apparatus having a plurality of control loops and displaying the same.

In order to handle an apparatus (multi-loop system) having a plurality of control loops, a general-purpose controller (temperature controller) may be used (see Patent Document 1). Examples of heating apparatuses to which a multi-loop system controller (temperature controller) is applied are shown in Figs. 11 and 12. Fig.

11, the heating apparatus includes a heat treatment furnace 100 for heating the object to be heated, a plurality of heaters H1 to H4 provided inside the heat treatment furnace 100, A plurality of temperature sensors S1 to S4 for measuring the temperatures of the temperature control zones Z1 to Z4 in the heating processing furnace 100 heated by the heaters H1 to H4 and the manipulated variables MV1 to MV4 output to the heaters H1 to H4, And power regulators 102-1 to 102-4 for supplying electric power corresponding to the manipulated variables MV1 to MV4 output from the controller 101 to the heaters H1 to H4 do. The controller 101 calculates the manipulated variables MV1 to MV4 so that the temperatures PV1 to PV4 measured by the temperature sensors S1 to S4 coincide with the temperature set values SP1 to SP4. In the heating apparatus shown in Fig. 11, four control loops for controlling the temperatures PV1 to PV4 are formed.

In the example of the heating apparatus shown in FIG. 12, the silicon wafer 204 is carried into the quartz tube 203 in the oxidation diffusion furnace 200. The temperature sensors S1 to S4 measure the temperatures PV1 to PV4 of the temperature control zones Z1 to Z4 heated by the heaters H1 to H4, respectively. The controller 201 calculates the manipulated variables MV1 to MV4 so that the temperatures PV1 to PV4 measured by the temperature sensors S1 to S4 match the temperature set values SP1 to SP4 and outputs them to the heater power supply 202 do. The heater power supply 202 supplies electric power corresponding to the manipulated variables MV1 to MV4 to the heaters H1 to H4. In this way, an oxide film is formed on the surface of the silicon wafer 204 by heating the silicon wafer 204 and the oxygen introduced into the quartz tube 203 in the oxidation diffusion furnace 200. In the heating apparatus shown in Fig. 12, four control loops for controlling the temperatures PV1 to PV4 are also formed.

A display device such as a liquid crystal display is used to transmit information to an operator in a manufacturing apparatus for manufacturing semiconductor, for example, using the controllers 101 and 201 or the controllers 101 and 201 (see Patent Document 2) . Further, in the technique disclosed in Patent Document 3, a plurality of information such as an alarm is displayed on the screen.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2004-048370 [Patent Document 2] Japanese Unexamined Patent Application Publication No. 2001-154786 [Patent Document 3] Japanese Patent Laid-Open No. 2008-256651

When a display device is mounted on a small-sized manufacturing apparatus, a small-sized display apparatus is used. However, in the case of handling a multi-loop system as described with reference to Figs. 11 and 12, it is difficult to say that the size of a screen is not sufficient in a small-sized display device, the display becomes difficult to see, .

In particular, as shown in Fig. 13, in the small-sized display device 301 which is integrated with the general-purpose control system 300 and in which the specifications of the screen are designed for general purpose, the individual control objects (No.1 to No There is a limitation in effectively performing display that reflects a characteristic inherent to a control object distinguished by a loop number of .4). As described above, a compact display device used for multi-loop system information display is required to be improved in convenience.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to improve the convenience for operators in a display device which is commonly used in a multi-loop system.

The display device of the present invention includes a display device for displaying an image and a loop information display control device for displaying information on the display object relating to the control loop of the display object among the plurality of control loops in the device to be controlled, An information acquiring means for periodically acquiring information of all control loops from the information output apparatus; and a control means for controlling the regulation of the alarm rank, From among the control loops in which alarms are generated, on the basis of the regulation, the alarm information in the device to be controlled, and the information acquired by the information acquisition means, An alarm ranking determining means for determining an alarm ranking of the extracted control loop in accordance with the above rule, And an alarm ranking display control means for displaying, in an image displayed by the loop information display control means, the alarm rank of the control loop whose alarm rank determination means is the target of the alarm ranking in the control loop, Is a rule for determining the alarm rank based on the deviation of the physical quantity with respect to the predetermined management range with respect to the alarm of the physical quantity related to the control operation.

Further, in one configuration example of the display apparatus of the present invention, the loop information display control means may display the information of only one loop in the control loop other than the displayed control loop, Further comprising an alarm rank addition display control means for additionally displaying an alarm rank of a control loop other than the control loop being displayed in an image displayed by the loop information display control means when an alarm is generated.

Further, an example of the configuration of the display device of the present invention is characterized in that it comprises: input means capable of operating on the screen of the display element; and display means for displaying only one loop of information, Only the information of the display target of the control loop corresponding to the operated alarm rank is displayed when the operator operates the position of the alarm rank additionally displayed in the state that the alarm rank addition display control means additionally displays the alarm rank of the control loop And an alarm corresponding transition control means for switching the screen so as to switch the screen.

In the configuration example of the display apparatus according to the present invention, the regulation for determining the alarm rank is for the alarm of the temperature measurement value (PV), for the alarm temperature range, And the alarm rank is determined based on the deviation of the temperature measurement value (PV) on the high temperature side.

A display method of the present invention is a display method including a loop information display control step of displaying on a display element information to be displayed on a control loop to be displayed among a plurality of control loops in a device to be controlled, An information acquiring step of periodically acquiring information of all control loops; and a step of acquiring information stored by referring to a rank definition information storing means for storing a rule for determining an alarm rank, Extracts a control loop which is an object of regulation of the alarm rank among the control loops in which an alarm is generated based on the alarm information in the information acquisition step and the information acquired in the information acquisition step, An alarm ranking step of determining, in the alarm ranking step, an alarm ranking And an alarm rank display control step of displaying an alarm rank of the control loop as a target of the regulation within the image displayed in the loop information display control step, wherein the regulation for determining the alarm rank is an alarm Is a rule for determining an alarm rank based on a deviation of the physical quantity with respect to a predetermined management range.

According to the present invention, it is possible to add a display for making it easy to grasp the alarm rank to the displayed information by providing the ranking regulation information storage means, the information acquisition means, the alarm ranking means, and the alarm ranking display control means , It is possible to improve the convenience for the operator in a small-sized display device used in a multi-loop system in which the specification of the screen is designed for a general purpose.

Further, in the present invention, by providing the alarm rank addition display control means, it is possible to inform the operator of the alarm rank of the control loops other than the control loop being displayed.

Further, according to the present invention, by providing the alarm response execution control means, when there is a control loop in which an alarm having a higher alarm rank is generated than the control loop being displayed, information of a control loop having a high alarm ranking is displayed It is possible to shift to a state in which

1 is a diagram showing an example of displaying information of four control loops on the screen of the display device.
2 is a diagram showing an example of enlarging and displaying the information of one control loop on the screen of the display device.
3 is a block diagram showing the configuration of a display device according to the first embodiment of the present invention.
4 is a flowchart for explaining the operation of the display apparatus according to the first embodiment of the present invention.
5 is a diagram showing an example of display in the first embodiment of the present invention.
6 is a diagram showing another display example in the first embodiment of the present invention.
7 is a block diagram showing a configuration of a display device according to a second embodiment of the present invention.
8 is a flow chart for explaining the operation of the display device according to the second embodiment of the present invention.
Fig. 9 is a diagram showing a display example according to the second embodiment of the present invention.
10 is a diagram showing another display example in the second embodiment of the present invention.
11 is a diagram showing a configuration example of a heating apparatus having a plurality of control loops.
12 is a diagram showing another example of the configuration of a heating apparatus having a plurality of control loops.
13 is a diagram showing an example of a display integrated with a general-purpose controller.

[Inventive Principle 1]

When different types of alarms are generated in a plurality of control loops while information of, for example, four control loops is displayed on the screen 1 of the display device as shown in Fig. 1, . If a general controller (for example, a multi-loop temperature controller) is used, a display function that makes it easy to grasp the urgency ranking when an alarm occurs at the same time in a plurality of control loops must be defined as much as possible in the standard shipment stage from the controller maker Only.

In the case of temperature control, overheating (excessive temperature rise) is a particularly important alarm. It is appropriate to assign the urgency order of the alarm in the order of the overheat temperature width deviating from the management range (usually the allowable temperature range around the set value SP). With this in mind, it is possible to specify the use of the overheat temperature width as a standard function for ranking alarms. Using the management width, it is applicable to other than the temperature.

Thus, the inventor has added a notation that makes it easy to grasp the alarm rank. Specifically, the rank of urgency of the alarm is clearly displayed by numerical value. Further, in practice, it is also effective to adopt a temperature width deviated to the temperature side lower than the set value SP, or to extend the control loop in which the set value SP is on the higher temperature side, Do.

[Invention Principle 2]

In particular, as an operation assumed in a small-sized display device, there is a state in which only information for one loop is magnified and displayed (FIG. 2). In this case, if there is a control loop in which an alarm having a higher alarm rank is generated than the displayed control loop, it is preferable to add a function of enabling a simple operation to be performed in a display state in which the control loop can be operated Do.

[First Embodiment]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. 3 is a block diagram showing the configuration of a display device according to the first embodiment of the present invention. The present embodiment is an example corresponding to the above-described invention Principle 1. In the present embodiment, as shown in Figs. 11 and 12, the temperature control is performed by a general-purpose controller in a production apparatus of four control loops (four control zones as an apparatus). However, even three control loops less than four control loops, five more control loops, and six control loops than four control loops are applicable to the alarm ranking display, which is an essential part of the present invention.

The display device according to the present embodiment includes a rating regulation information storage section 10 for storing a regulation for determining an alarm rank in advance and a control section 10 for acquiring the definition of the alarm rank from the rating regulation information storage section 10, An alarm ranking which determines the alarm rank of the extracted control loop in accordance with the above rule is extracted based on the alarm information in the device of the control loop A loop information display control section (12) for displaying information on a display object to be displayed on a display object control loop in a device to be controlled on a display element to be described later; An alarm ranking display control section (13) for displaying in the image displayed by the loop information display control section (12) the alarm rank of the control loop in which the ranking section (11) An information acquisition unit 14 for periodically acquiring information on all control loops from an information output apparatus (for example, a general-purpose controller), and a display element 15 such as a liquid crystal panel for image display.

4 is a flowchart for explaining the operation of the display apparatus of the present embodiment. The loop information display control unit 12 causes the display device 15 to display information to be displayed transmitted from an information output apparatus (for example, a general-purpose controller) (not shown) in accordance with a predetermined rule (step S100 in FIG. The general-purpose control system transmits to the loop information display control section 12 information to be displayed which is automatically selected in accordance with a predetermined rule or information to be displayed which is selected in accordance with the operation of the operator.

For example, in the case of displaying four control loops, the general-purpose controller sets control information and operation information corresponding to each control loop in the apparatus to be controlled (for example, a heating apparatus) and a loop number specifying each control loop To the information display control section (12). 1, information corresponding to each control loop (the temperature set value SP and the temperature measured value PV in the example of FIG. 1) and the loop number (the temperature measured value PV in the example of FIG. 1) are set in accordance with a predetermined rule, No.1 to No. 4) are arranged in a matrix of 2 x 2 pixels on the display element 15.

In the case of displaying one control loop, the general-purpose control system transmits to the loop information display control unit 12 the control information and the operation information corresponding to the control loop to be the object and the loop number specifying the control loop . The loop information display control unit 12 displays information (the temperature set value SP and the temperature measured value PV in the example of Fig. 2) and the loop number (No. 2) corresponding to the control loop as shown in Fig. 2 in accordance with a predetermined rule. 3) is enlarged and displayed on one screen to display the image on the display element 15. [ In this case, the information of the control loops of the loop numbers No. 1, No. 2, and No. 4 is not displayed.

The processing of step S100 is the same as the processing which has been conventionally performed in the general-purpose control system.

When the alarm occurs, the general-purpose control system transmits alarm information indicating the contents of the alarm and a loop number specifying the control loop in which the alarm occurs, to the display device. The alarm information includes an alarm code indicating the type of the alarm.

The information acquiring unit 14 periodically acquires information on all the control loops from the information output apparatus (for example, the general-purpose controller) (Fig. 4, step S101). At this time, the information acquiring unit 14 acquires the physical quantities related to the control operations (in this embodiment, the temperature measurement values ( PV) and the temperature set value (SP)).

Next, a rule for determining the alarm rank is stored in advance in the rank definition information storage unit 10. Here, it is assumed that the higher the alarm rank becomes, the larger the temperature measurement value PV deviates from the allowable temperature range set beforehand to the high temperature side in the vicinity of the temperature set value SP. If the upper limit value of the allowable temperature range is TH, the overheat temperature range is PV-TH.

The alarm ranking determination unit 11 acquires the specification of the alarm ranking from the ranking specification information storage unit 10 and updates the alarm information received from this specification and the general purpose control system to the latest A control loop to be an object of the alarm ranking is extracted from the control loops in which the alarm is generated, and the alarm ranking of the extracted control loops is determined in accordance with the above-mentioned rule (step S102). Here, since the regulation that the alarm rank becomes higher as the overheat temperature width becomes larger is stored in the rank definition information storage unit 10, the control loop in which the temperature measurement value PV becomes higher than the allowable temperature range is stored It becomes a target. As described above, the temperature measurement value (PV) and the temperature set value (SP) necessary for determining the alarm rank are acquired by the information acquisition unit (14).

The alarm rank display control section 13 sets the alarm rank of the control loop whose alarm rank determination section 11 is the target of the alarm ranking among the control loops to be displayed by the loop information display control section 12, And displays it in the image displayed by the display control section 12 (Fig. 4, step S103).

At this time, the alarm rank display control section 13 controls the loop display control section 12 to display the information displayed on the display element 15 in the form of a plurality of control loops, as shown in Fig. 1, When an image is displayed for each loop, the alarm rank of the control loop which is the target of the alarm ranking is displayed in the section corresponding to this control loop.

The processes of steps S100 to S103 as described above are repeatedly executed until the operation of the display device is ended (YES in step S104 of FIG. 4).

5 is a diagram showing a display example of this embodiment. 5, the temperature set value SP of the control loops of the loop numbers Nos. 1 to 4 and the temperature measured value PV are displayed on the screen 1 of the display element 15, This is an example in which an alarm requiring urgency is generated in the control loops of the loop numbers No. 2 and No. 3 in a state in which one loop is displayed for each corresponding segment (1-1 to 1-4) on the screen. The alarm rank display control section 13 changes the background color of the section corresponding to the control loops of the loop numbers No. 2 and No. 3 in which an alarm requiring urgency is generated and displays an alarm Display a number indicating the rank. In the example of Fig. 5, the alarm rank of the control loop of the loop number No. 3 is the first rank, and the alarm rank of the control loop of the loop number No. 2 is the second rank.

It is also assumed that the temperature set values (SP1 to SP4) of the control loops of the loop numbers Nos. 1 to 4 are set to the same value of 100 占 폚. It is assumed that PV1 = 101 deg. C, PV2 = 106 deg. C, PV3 = 104 deg. C, and PV4 = 105 deg. Are temperature measurement values (PV1 to PV4) of the control loops of the loop numbers Nos. 1 to 4.

(PV2) of the control loop of loop No. 2 is within the allowable temperature range SP2 ± 3 ° C to the high temperature side when the allowable temperature range set around the temperature set values (SP1 to SP4) is set to ± 3 ° C And the overheat temperature width is 3 占 폚. Further, the temperature measurement value PV3 of the control loop of the loop number No. 3 deviates from the allowable temperature range SP3 占 폚 to the high temperature side, and the overheat temperature width is 1 占 폚. Similarly, the temperature measurement value PV4 of the control loop of the loop number No. 4 deviates from the allowable temperature range SP4 +/- 3 DEG C to the high temperature side, and the overheat temperature width is 2 DEG C. [ Accordingly, an alarm requiring urgency occurs in the control loops of the loop numbers Nos. 2 to 4, and the alarm ranking unit 11 sets the alarm rank of the control loop of the loop number No. 2 as the first place, The alarm rank of the control loop No. 4 is set to 2, and the alarm rank of the control loop of the loop No. 3 is set to 3. As a result, the display shown in Fig. 6 is obtained.

As described above, in the present embodiment, it is possible to add a display for making it easy to grasp the alarm rank to the displayed information. That is, the specification of the screen is designed for general purpose, and convenience for the operator can be improved in a small display device used in a multi-loop system.

Further, in the present embodiment, the regulation that the alarm rank becomes higher as the overheat temperature width becomes larger is stored in the rank definition information storage unit 10. However, when the temperature measurement value PV is less than the allowable temperature range, A rule that the alarm ranking becomes higher as the deviation amount (deviation width) becomes larger is stored in the ranking regulation information storage unit 10. [ If the lower limit value of the allowable temperature range is TL, the under temperature width is TL-PV. It is assumed that the temperature set values (SP1 to SP4) of the control loops of the loop numbers Nos. 1 to 4 are set to the same value of 100 DEG C in a state where such a rule is stored. It is assumed that PV1 = 101 DEG C, PV2 = 94 DEG C, PV3 = 96 DEG C, and PV4 = 95 DEG C are the temperature measurement values (PV1 to PV4) of the control loops of the loop numbers Nos.

Similarly to the above, when the allowable temperature range set with the temperature setting values (SP1 to SP4) as the center is ± 3 ° C, the temperature measured value PV2 of the control loop of the loop No. 2 becomes the allowable temperature range SP2 ± 3 Deg.] C to the low temperature side, and the shortage temperature width is 3 [deg.] C. Further, the temperature measurement value PV3 of the control loop of the loop number No. 3 deviates from the allowable temperature range SP3 占 폚 to the low temperature side, and the lack temperature width is 1 占 폚. Likewise, the temperature measurement value PV4 of the control loop of the loop No. 4 deviates from the allowable temperature range SP4 +/- 3 DEG C to the low temperature side, and the lack temperature width is 2 DEG C. [ Accordingly, an alarm requiring urgency occurs in the control loops of the loop numbers Nos. 2 to 4, and the alarm ranking unit 11 sets the alarm rank of the control loop of the loop number No. 2 as the first place, The alarm rank of the control loop No. 4 is set to 2, and the alarm rank of the control loop of the loop No. 3 is set to 3. As a result, a display similar to that of Fig. 6 is obtained.

In addition, when the overheat temperature width is larger, the alarm ranking is higher, and when the overheat temperature width is the same, the rule that the alarm ranking becomes higher as the temperature set value SP becomes higher is stored in the ranking regulation information storage unit 10 good. SP1 = 100 deg. C, SP2 = 105 deg. C, SP3 = 110 deg. C, SP4 = 107 deg. C in the loop numbers No. 1 through No. 4 Lt; 0 > C. It is assumed that PV1 = 101 deg. C, PV2 = 110 deg. C, PV3 = 115 deg. C, and PV4 = 112 deg. C are the temperature measurement values (PV1 to PV4) of the control loops of the loop numbers No. 1 to No. 4.

Similarly to the above, when the allowable temperature range set with the temperature set values SP1 to SP4 as the center is set to 3 deg. C, the temperature measurement values PV2 of the control loops No. 2, No. 3, , PV3, and PV4) deviate from the allowable temperature range of SP2 ± 3 ° C, SP3 ± 3 ° C, and SP4 ± 3 ° C, respectively, and the overheat temperature width is all 2 ° C. Therefore, an alarm requiring urgency is generated in the control loops of the loop numbers Nos. 2 to 4, and since the overheat temperature width is all 2 ° C, the alarm ranking unit 11 sets the temperature set values SP2, SP3, and SP4), the alarm rank of the control loop of the loop number No. 3 is ranked first, the alarm rank of the control loop of the loop number No. 4 is the second rank, the alarm number of the control loop of the loop number No. 2 Rank third.

[Second Embodiment]

Next, a second embodiment of the present invention will be described. The present embodiment is an example corresponding to the above-described invention Principle 2. Fig. 7 is a block diagram showing the configuration of a display device according to the present embodiment. The same components as those in Fig. 3 are denoted by the same reference numerals. The display device of the present embodiment includes a rank definition information storage unit 10, an alarm rank determination unit 11, a loop information display control unit 12, an alarm rank display control unit 13, an information acquisition unit 14a The display device 15a having the touch panel function and the loop information display control section 12 are arranged to display only the information of one loop, An alarm rank addition display control section (16) for additionally displaying an alarm rank of control loops other than the control loop being displayed in an image displayed by the loop information display control section (12) when a target alarm occurs, The control section 12 displays only the information of one loop and further displays the alarm rank of the control loops other than the control loop being displayed by the alarm rank addition display control section 16, Five And an alarm correspondence execution control section (17) for switching the screen so as to display only the display object of the control loop corresponding to the operated alarm rank when the porter operates. The display device 15a having the touch panel function constitutes an input means capable of operating on the screen.

8 is a flowchart for explaining the operation of the display apparatus of the present embodiment. The operation of the loop information display control unit 12 is as described in the first embodiment (step S100 in Fig. 8). Here, as shown in Fig. 2, the information corresponding to the specific control loop and the loop number are enlarged to one screen and displayed on the display element 15a.

The information acquiring unit 14a acquires information necessary for the determination of the alarm ranking, like the information acquiring unit 14 of the first embodiment, and acquires, as information of all the control loops, Information of the display item is acquired from the information output apparatus (for example, general-purpose controller) (step S101a of FIG. 8). For example, if the temperature setting value (SP) and the temperature measurement value (PV) of the control loop of the loop No. 3 are currently displayed, the temperature set value (SP) of the control loop of the loop numbers No. 1 to No. 4 It is sufficient to obtain the temperature measurement value (PV).

The operation of the ranking regulation information storage unit 10, the alarm ranking determination unit 11 and the alarm ranking display control unit 13 is the same as that described in the first embodiment (steps S102 and S103 in FIG. 8).

When the loop information display control section 12 displays the information for one loop in an enlarged state (YES in step S105 of FIG. 8), the alarm rank addition display control section 16 displays an alarm (YES in step S106 of FIG. 8), the alarm rank of the control loops other than the control loop being displayed is displayed in the additional display within the image displayed by the loop information display control section 12 (Step S107 of FIG. 4).

9 is a diagram showing a display example of the present embodiment. 9, the information of one loop (the temperature set value SP and the temperature measured value PV in the example of FIG. 9) and the loop number (No. 3) are enlarged and displayed on one screen And the alarm generation state is the same as that in Fig. 6. As described above, the alarm ranking unit 11 sets the alarm rank of the control loop of the loop number No. 2 to 1, the alarm rank of the control loop of the loop number No. 4 to the 2, The alarm rank display control section 13 changes the background color of the screen 1 in which the information of the control loop of the loop number No. 3 is being displayed and displays a Δ table 2) Indicate that the alarm rank is third.

Further, since the alarm ranking additional display control section 16 has generated an alarm in a control loop (control loops of the loop numbers Nos. 2 and 4) other than the control loop being displayed, the control loop of the loop number No. 2 (3-1) indicating the occurrence of the alarm of the loop number No. 4, and that the alarm rank is the second rank in the (3-2) indicating the alarm occurrence of the control loop of the loop number No. 4 .

10 is a diagram showing another display example of the present embodiment. 10, the information of one loop (the temperature set value SP and the temperature measured value PV in the example of Fig. 10) and the loop number (No. 3) are enlarged to one screen This is an example when an alarm has not occurred in the control loop of Loop No. 3 but an alarm has occurred in another control loop.

For example, if the alarm rank of the control loop of the loop number No. 2 is set to the first rank and the alarm rank of the control loop of the loop number No. 4 is set to the second rank, (3-1) indicating the occurrence of the alarm of the loop number No. 4, and that the alarm rank is the second rank in the (3-2) indicating the alarm occurrence of the control loop of the loop number No. 4 .

On the other hand, the alarm response execution control section 17 causes the loop information display control section 12 to enlarge and display the information for one loop, and also displays the alarm rank of the control loops other than the control loop being displayed, Corresponding to the operated alarm rank, when the operator operates the position of the alarm rank additionally displayed by the alarm rank addition display control unit 16 (YES in step S108 of FIG. 8) (FIG. 8, step S109).

In the case of using the display element 15a having the touch panel function, the operator may touch the point where the alarm rank on the screen 1 is displayed. For example, when the operator touches the position of the? Table (3-1) in the state as shown in Fig. 9, the alarm response execution control unit 17 sets the control loop (e.g. 2 control loop) of the display object.

At this time, the display target information may be a display item of the same kind as the display item before switching the screen. For example, if it is assumed that the temperature setting value (SP) and the temperature measurement value (PV) of the control loop of the loop number No. 3 are displayed before switching the screen, the temperature of the control loop of the loop No. 2 Value (SP) and temperature measurement value (PV).

However, in a state in which the information of the control loop of the loop number No. 3 is being displayed, the alarm response execution control section 17 does not have the information to be displayed on the screen after switching, and therefore, It is necessary to acquire the latest information of the display items of the same kind as the display items of the control loops displayed on the screen before the conversion from the information acquisition unit 14a.

The processes of steps S100, S101a, S102, S103, and S105 to S109 are repeatedly executed until the operation of the display device is ended (YES in step S110 of FIG. 8).

In this manner, in the present embodiment, when there is a control loop in which an alarm having a higher alarm rank is generated than the control loop being displayed, the state can be shifted to a state in which information of a control loop having a higher alarm ranking is displayed by a simple operation .

In the first and second embodiments, the control amount (PV), particularly the temperature, is described as an example of the physical quantity related to the control operation. However, the present invention is not limited to this and the alarm of the physical quantity detected by the general- A rule that the alarm rank becomes higher as the deviation of the physical quantity with respect to the predetermined management range becomes larger is registered in the ranking regulation information storage section 10 and the alarm ranking section 11 acquires the rules obtained from the rank regulation information storage section 10 And the physical quantity detected by the general-purpose controller, an alarm rank is determined based on the control quantity PV other than the temperature or the physical quantity other than the control quantity PV (for example, the deviation between the set value SP and the control quantity PV) It is possible to apply the present invention.

In the first and second embodiments, the display device is described as being separate from the general-purpose control system. However, it goes without saying that the present invention may be applied to a display device integrated with a general-purpose control system.

The rank definition information storage unit 10, the alarm ranking unit 11, the loop information display control unit 12, the alarm rank display control unit 13, and the information acquisition unit 14 among the display devices described in the first embodiment , A CPU (Central Processing Unit), a computer having a storage device and an interface, and a program for controlling these hardware resources. Likewise, among the display apparatuses described in the second embodiment, the rank definition information storage unit 10, the alarm ranking unit 11, the loop information display control unit 12, the alarm rank display control unit 13, and the information acquisition unit 14a ), The alarm rank addition display control unit 16 and the alarm correspondence execution control unit 17 can be realized by a computer. The CPU of these computers executes the processing described in the first and second embodiments in accordance with the program stored in the storage device.

The present invention can be applied to a display device used in a multi-loop system.

10: Rank definition information storage unit 11: Alarm ranking unit
12: Loop information display control unit 13: Alarm rank display control unit
14, 14a: Information acquisition unit 15, 15a:
16: Alarm rank addition display control part 17: Alarm response execution control part

Claims (8)

A display element for image display,
Loop information display control means for displaying on the display element information to be displayed concerning a control loop to be displayed among a plurality of control loops in a device to be controlled,
Ranking regulation information storage means for storing a rule for determining an alarm ranking in advance,
Information acquisition means for periodically acquiring information of all control loops from the information output apparatus,
The control unit acquires the specification of the alarm rank from the ranking specification information storage unit and selects, based on the specification, the alarm information of the device to be controlled and the information acquired by the information acquisition unit, An alarm ranking determining means for extracting a control loop to be a target of the ranking and determining an alarm ranking of the extracted control loop in accordance with the above rule,
And an alarm rank display control means for causing the alarm rank determining means to display the alarm rank of the control loop to be specified by the alarm rank in the image displayed by the loop information display control means among the control loops to be displayed ,
The rule for determining the alarm rank is a rule for determining the alarm rank based on the deviation of the physical quantity with respect to the predetermined management range for the alarm of the physical quantity related to the control operation,
When the loop information display control means displays only one loop of information and an alarm that is the object of the alarm ranking is generated in a control loop other than the control loop being displayed, Further comprising an alarm rank addition display control means for additionally displaying the alarm rank of the loop in the image displayed by the loop information display control means. The method according to claim 1,
Input means capable of operating on the screen of the display element;
Wherein the loop information display control means displays only the information of one loop and further displays the alarm rank of the control loops other than the control loop being displayed by the alarm rank addition display control means, Further comprising an alarm corresponding transition control means for switching the screen to display only the display target information of the control loop corresponding to the operated alarm rank when the operator operates the display means. 3. The method according to claim 1 or 2,
The rule for determining the alarm rank is that the deviation of the temperature measurement value (PV) to the high temperature side with respect to the allowable temperature range preset in the vicinity of the temperature set value (SP) And the alarm rank is determined based on the alarm rank. A loop information display control step of displaying, on a display element, display target information concerning a control loop to be displayed among a plurality of control loops in a device to be controlled;
An information acquiring step of periodically acquiring information of all control loops from the information output apparatus,
Acquiring the stored information with reference to the rating regulation information storage means for storing the regulation for determining the alarm rank, and based on the acquired regulation, the alarm information in the control target apparatus and the information acquired in the information acquisition step An alarm ranking step of extracting a control loop to be an object of regulation of the alarm rank among the control loops in which an alarm is generated and determining an alarm rank of the extracted control loop according to the above-
And an alarm rank display control step of displaying an alarm rank of a control loop that is an object of the alarm rank specification in the alarm ranking determination step among the control loops to be displayed in the image displayed in the loop information display control step ,
The rule for determining the alarm rank is a rule for determining the alarm rank based on the deviation of the physical quantity with respect to the predetermined management range for the alarm of the physical quantity related to the control operation,
When an alarm which is the target of the alarm ranking is generated in a control loop other than the control loop being displayed while only the information of one loop is being displayed in the loop information display control step, Further comprising an alarm rank addition display control step of additionally displaying the alarm rank of the loop in the image displayed in the loop information display control step. 5. The method of claim 4,
In the loop information display control step, only the information of one loop is displayed, and furthermore, the alarm rank of the control loops other than the control loop being displayed is additionally displayed in the alarm rank addition display control step, Further comprising an alarm correspondence transition control step of switching the screen so that only the information of the display target of the control loop corresponding to the operated alarm rank is displayed when the operator operates the display. The method according to claim 4 or 5,
The rule for determining the alarm rank is that the deviation of the temperature measurement value (PV) to the high temperature side with respect to the allowable temperature range preset in the vicinity of the temperature set value (SP) And the alarm rank is determined based on the alarm rank. delete delete

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