JP2017097690A - Display device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device with improved convenience for an operator.SOLUTION: The display device comprises: an order rule information storage unit 10 storing a rule for determining an alarm order; an information acquisition unit 14 regularly acquiring information on all control loops; an alarm order determination unit 11 extracting a control loop to be ruled for the alarm order based on the rule acquired from the order rule information storage unit 10, alarm information of a control target device and information acquired by the information acquisition unit 14, and determining the alarm order of the control loop in accordance with the rule; a loop information display control unit 12 causing a display element 15 to display display target information related to a display target control loop in the control target device; and an alarm order display control unit 13 displaying the alarm order of a control loop determined to be ruled for the alarm order by the alarm order determination unit 11 from among the display target control loops.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display device that receives and displays information related to a control loop to be displayed and alarm information from a general-purpose controller that controls a device having a plurality of control loops.

  A general-purpose controller (temperature controller) may be used to handle an apparatus (multi-loop system) having a plurality of control loops (see Patent Document 1). Examples of a heating device targeted by a multi-loop controller (temperature controller) are shown in FIGS.

  In the example of FIG. 11, the heating device is heated by a heat treatment furnace 100 for heating an object to be heated, a plurality of heaters H1 to H4 installed in the heat treatment furnace 100, and heaters H1 to H4, respectively. A plurality of temperature sensors S1 to S4 that measure the temperature of the temperature control zones Z1 to Z4 in the heat treatment furnace 100, a controller 101 that calculates operation amounts MV1 to MV4 output to the heaters H1 to H4, and a controller 101 Power regulators 102-1 to 102-4 that supply power corresponding to the operation amounts MV1 to MV4 output from the heaters H1 to H4. 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.

  Further, 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. Temperature sensors S1-S4 measure temperatures PV1-PV4 of temperature control zones Z1-Z4 heated by heaters H1-H4, respectively. The controller 201 calculates the operation amounts 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, and outputs them to the heater power source 202. The heater power source 202 supplies power corresponding to the operation amounts MV1 to MV4 to the heaters H1 to H4. Thus, the oxygen introduced into the quartz tube 203 in the oxidation diffusion furnace 200 and the silicon wafer 204 are heated to form an oxide film on the surface of the silicon wafer 204. Also in the heating apparatus shown in FIG. 12, four control loops for controlling the temperatures PV1 to PV4 are formed.

  In a manufacturing apparatus that manufactures, for example, a semiconductor using the controller 101 or 201 or the controller 101 or 201, a display device such as a liquid crystal display is used to convey information to an operator (see Patent Document 2). . In the technique disclosed in Patent Document 3, a large amount of information such as an alarm is displayed on the screen.

JP 2012-048370 A JP 2001-154786 A JP 2008-256651 A

  When a display device is mounted on a small manufacturing apparatus, a small display device is used. However, when handling the multi-loop system as described with reference to FIGS. 11 and 12, the size of the screen is not always sufficient for a small display device, and it becomes difficult to see the display, resulting in a problem in convenience. was there.

  In particular, as shown in FIG. 13, in a small display device 301 that is integrated with a general-purpose controller 300 and whose screen specifications are designed for general-purpose purposes, each control target (No. 1 to No. 4 in FIG. There is a limit to the efficient display that reflects the unique properties of the control object (identified by the loop number). Thus, convenience improvement is required for a small display device used for multi-loop information display.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to improve convenience for an operator in a display device that is generally used in a multi-loop system.

  The display device according to the present invention includes a display element for displaying an image and loop information display control for displaying information on a display target related to the control loop of the display target on the display element among a plurality of control loops in the control target device. Means for preliminarily storing a rule for determining an alarm rank; information acquisition means for periodically obtaining information of all control loops from the information output device; Control that is subject to the regulation of the alarm order in the control loop in which the alarm is generated based on this regulation, the alarm information in the device to be controlled, and the information obtained by the information acquisition means. An alarm rank determining means for extracting a loop and determining an alarm rank of the extracted control loop according to the regulation; and An alarm order display control means for displaying the alarm order of the control loop targeted by the alarm order determining means in the image displayed by the loop information display control means, The rule for determining the alarm is a rule for determining the alarm order for the alarm of the physical quantity related to the control operation based on the deviation of the physical quantity from the predetermined management range.

Further, in one configuration example of the display device of the present invention, the alarm information is assigned to the control loops other than the currently displayed control loop in a state where the loop information display control means displays only information for one loop. Alarm order addition display control means for additionally displaying the alarm order of control loops other than the currently displayed control loop in the image displayed by the loop information display control means when an alarm subject to regulation occurs. It is characterized by this.
In addition, according to one configuration example of the display device of the present invention, the input unit capable of operating the screen of the display element and the loop information display control unit display only information for one loop, and are being displayed. When the alarm rank of the control loop other than the control loop is additionally displayed by the alarm rank additional display control means, when the operator operates the portion of the alarm rank displayed additionally, it corresponds to the operated alarm rank. And an alarm corresponding transition control means for switching a screen so as to display only information to be displayed in the control loop.
In one configuration example of the display device of the present invention, the rule for determining the alarm order is that the temperature to the high temperature side with respect to an allowable temperature range set in advance around the temperature set value SP for the alarm of the temperature measurement value PV. This is a rule for determining the alarm order based on the deviation width of the measured value PV.

  Further, the display method of the present invention includes a loop information display control step for displaying information on a display target related to a control loop to be displayed on a display element among a plurality of control loops in the control target device, and an information output device. The information acquisition step of periodically acquiring the control loop information, and the stored information with reference to the rank definition information storage means for storing the rule for determining the alarm rank, the acquired rule and the control target Based on the alarm information in the device and the information acquired in the information acquisition step, out of the control loops in which the alarm has occurred, the control loops subject to the regulation of the alarm order are extracted, and the alarm order of the extracted control loops An alarm order determining step for determining the alarm order in accordance with the regulations, and the alarm order determining step in the control loop to be displayed. The alarm ranking display control step for displaying the alarm ranking of the control loop targeted for the regulation of the alarm ranking in the image displayed in the loop information display control step, and the regulation for determining the alarm ranking is a control operation. The physical quantity alarm related to the above is defined to determine the alarm order based on the deviation of the physical quantity from a predetermined management range.

  According to the present invention, by providing the rank defining information storage means, the information acquisition means, the alarm rank determination means, and the alarm rank display control means, a display that makes it easy to grasp the alarm rank on the displayed information. In a small display device used in a multi-loop system in which screen specifications can be designed for general purposes, convenience for the operator can be improved.

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

  Further, in the present invention, by providing an alarm corresponding transition control means, when there is a control loop in which an alarm having a higher alarm order than that of the currently displayed control loop is present, a control with a higher alarm order can be performed with a simple operation. It is possible to shift to a state in which loop information is displayed.

It is a figure which shows the example which displays the information for four control loops on the screen of a display apparatus. It is a figure which shows the example which expands and displays the information for one control loop on the screen of a display apparatus. It is a block diagram which shows the structure of the display apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart explaining operation | movement of the display apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows the example of a display in the 1st Embodiment of this invention. It is a figure which shows the other example of a display in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the display apparatus which concerns on the 2nd Embodiment of this invention. It is a flowchart explaining operation | movement of the display apparatus which concerns on the 2nd Embodiment of this invention. It is a figure which shows the example of a display in the 2nd Embodiment of this invention. It is a figure which shows the other example of a display in the 2nd Embodiment of this invention. It is a figure which shows the structural example of the heating apparatus provided with the some control loop. It is a figure which shows another structural example of the heating apparatus provided with the some control loop. It is a figure which shows the example of the display apparatus integrated with the general purpose controller.

[Principle of Invention 1]
As shown in FIG. 1, when information of four control loops is displayed on the screen 1 of the display device, for example, when different types of alarms are generated in a plurality of control loops, the urgent one is dealt with. Is preferred. For general-purpose controllers (for example, multi-loop temperature controllers), a display function that makes it easy to grasp the urgency ranking when alarms occur simultaneously in multiple control loops is a standard shipping stage from the controller manufacturer. Must be defined as much as possible.

  In the case of temperature control, overheating (excessive temperature rise) is a particularly important alarm. It is appropriate to assign the alarm urgency ranking in descending order of the superheat temperature range deviating from the management range (usually the allowable temperature range around the set value SP). If considered in this way, it can be defined that the overheat temperature range is used as a standard function for assigning alarm rankings. If the management width is used, it can be applied to other than the temperature.

  Therefore, the inventor has come up with the idea of adding a notation that makes it easy to grasp the alarm ranking. Specifically, the alarm urgency ranking is clearly displayed as a numerical value. For practical use, the temperature range deviating from the set value SP to the lower temperature side is similarly adopted, or the control loop in which the set value SP is set to the higher temperature side emphasizes the overheat temperature range. It is valid.

[Principle of Invention 2]
In particular, as an operation assumed for a small display device, there is a state in which only information for one loop is enlarged and displayed (FIG. 2). In this case, if there is a control loop in which an alarm with a higher alarm order than the displayed control loop is generated, a function that enables a simple operation to shift to a display state in which the control loop can be operated. It is preferable to add.

[First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing the configuration of the display device according to the first embodiment of the present invention. The present embodiment is an example corresponding to Principle 1 of the invention described above. In the present embodiment, as shown in FIG. 11 and FIG. 12, the temperature of a manufacturing apparatus having four control loops (four control zones as an apparatus) is controlled by a general-purpose controller. However, even if there are three control loops fewer than four control loops, five control loops larger than four control loops, and six control loops, the alarm order display which is the essential part of the present invention can be applied.

  The display device according to the present embodiment acquires a prescription defining information storage unit 10 for preliminarily storing a prescription for determining an alarm order, and an alarm rank prescription from the rank prescription information storage unit 10, and this prescription and an alarm in the device to be controlled An alarm rank determination unit 11 for extracting a control loop subject to the regulation of the alarm rank from the control loops in which an alarm is generated based on the information, and deciding the alarm rank of the extracted control loop according to the regulation; A loop information display control unit 12 for displaying information on a display target related to a display target control loop in the control target device on a display element to be described later, and among the display target control loops, the alarm ranking determination unit 11 has an alarm ranking. Alarm to display the alarm order of the control loop as the target of regulation in the image displayed by the loop information display control unit 12 A unit display control unit 13, an information acquisition unit 14 that periodically acquires information of all control loops from an information output device (for example, a general-purpose controller), and a display element 15 such as a liquid crystal panel for image display. Is done.

  FIG. 4 is a flowchart for explaining the operation of the display device of this embodiment. The loop information display control unit 12 causes the display element 15 to display information to be displayed passed from an information output device (for example, a general-purpose controller) (not shown) according to a predetermined rule (step S100 in FIG. 4). The general-purpose controller passes the information to be displayed automatically selected according to a predetermined rule or the information to be displayed selected according to the operation of the operator to the loop information display control unit 12.

  For example, when displaying four control loops, the general-purpose controller loops control information and operation information corresponding to each control loop in a device to be controlled (for example, a heating device) and a loop number for identifying each control loop. The information is transferred to the information display control unit 12. The loop information display control unit 12 follows the predetermined rule, as shown in FIG. 1, information corresponding to each control loop (temperature set value SP and temperature measurement value PV in the example of FIG. 1) and loop number (No. 1). To No. 4) are displayed on the display element 15 in a matrix of 2 × 2 matrix.

  Further, when displaying one control loop, the general-purpose controller passes control information and operation information corresponding to the target control loop and a loop number for specifying the control loop to the loop information display control unit 12. . The loop information display control unit 12 follows the predetermined rule, as shown in FIG. 2, information corresponding to the control loop (temperature set value SP and temperature measurement value PV in the example of FIG. 2) and loop number (No. 3). Are displayed on one screen and are displayed on the display element 15. In this case, loop numbers No. 1 and No. 2, no. The information on the control loop 4 is not displayed.

In addition, the process of the above step S100 is the same as the process conventionally performed with the general purpose controller.
Further, when an alarm is generated, the general-purpose controller passes alarm information indicating the content of the alarm and a loop number for specifying the control loop in which the alarm is generated to the display device. The alarm information includes an alarm code indicating the type of alarm.

  The information acquisition unit 14 periodically acquires information on all control loops from an information output device (for example, a general-purpose controller) (step S101 in FIG. 4). At this time, the information acquisition unit 14 receives the loop number No. 1-No. For the control loop No. 4, it is only necessary to acquire physical quantities (in this embodiment, temperature measurement value PV and temperature setting value SP) related to the control operation necessary for determining the alarm order described later.

  Next, a rule for determining the alarm rank is stored in advance in the rank regulation information storage unit 10. Here, there is stored a rule that the alarm rank becomes higher as the overheat temperature range (deviation range) deviating from the allowable temperature range preset in the vicinity of the temperature set value SP to the high temperature side is larger. Shall. If the upper limit value of the allowable temperature range is TH, the superheat temperature range is PV-TH.

  The alarm ranking determination unit 11 acquires the regulation of the alarm ranking from the ranking regulation information storage unit 10, and obtains the regulation, the alarm information received from the general-purpose controller, and the latest information of each control loop obtained by the information acquisition unit 14. Based on the control loop in which the alarm is generated, the control loop that is subject to the regulation of the alarm order is extracted, and the alarm order of the extracted control loop is determined according to the regulation (step S102 in FIG. 4). Here, since the rule that the alarm rank becomes higher as the overheat temperature width is larger is stored in the rank regulation information storage unit 10, the control loop in which the temperature measurement value PV is higher than the allowable temperature range is the alarm rank. Subject to regulations. As described above, the temperature measurement value PV and the temperature set value SP necessary for determining the alarm ranking are acquired by the information acquisition unit 14.

  The alarm rank display control unit 13 sets the alarm rank of the control loop targeted by the alarm rank determination unit 11 among the control loops to be displayed by the loop information display control unit 12 as the loop information display control unit. 12 is displayed in the displayed image (step S103 in FIG. 4).

At this time, the alarm ranking display control unit 13 controls the image displayed by the loop information display control unit 12 on the display element 15 so that the information of a plurality of control loops is divided into one section on the screen as shown in FIG. When the image is displayed for each loop, the alarm rank of the control loop that is the target of the alarm rank is displayed in the section corresponding to this control loop.
The processes in steps S100 to S103 as described above are repeatedly executed until the operation of the display device ends (YES in step S104 in FIG. 4).

  FIG. 5 is a diagram showing a display example of the present embodiment. In the example of FIG. 5, the loop number No. is displayed on the screen 1 of the display element 15 as in FIG. 1-No. In the state where the temperature setting value SP and the temperature measurement value PV of the control loop No. 4 are displayed for each loop in the corresponding sections 1-1 to 1-4 on the screen, the loop number No. 2, no. This is an example in which an alarm requiring urgency occurs in the control loop No. 3. The alarm ranking display control unit 13 sets the loop number No. at which the alarm requiring urgency has occurred. 2, no. The background color of the section corresponding to the control loop 3 is changed, and a number indicating the alarm order is displayed in the Δ mark 2 indicating the occurrence of the alarm. In the example of FIG. The alarm ranking of the control loop No. 3 is No. 1, and the loop number No. The alarm ranking of the second control loop is second.

  In addition, the loop number No. 1-No. It is assumed that the temperature setting values SP1 to SP4 of the four control loops are set to the same value of 100 ° C. The loop number No. 1-No. It is assumed that the measured temperature values PV1 to PV4 of the control loop No. 4 are PV1 = 101 ° C., PV2 = 106 ° C., PV3 = 104 ° C., PV4 = 105 ° C.

  If the allowable temperature range set around the temperature setting values SP1 to SP4 is ± 3 ° C., the loop number No. The temperature measurement value PV2 of the control loop No. 2 deviates from the allowable temperature range SP2 ± 3 ° C. to the high temperature side, and the overheat temperature width is 3 ° C. In addition, the loop number No. The temperature measurement value PV3 of the control loop 3 deviates from the allowable temperature range SP3 ± 3 ° C. to the high temperature side, and the overheat temperature width is 1 ° C. Similarly, the loop number No. The temperature measurement value PV4 of the control loop No. 4 deviates from the allowable temperature range SP4 ± 3 ° C. to the high temperature side, and the overheat temperature width is 2 ° C. Therefore, the loop number No. 2-No. 4, an alarm requiring urgency is generated, and the alarm ranking determining unit 11 sets the loop number No. No. 2 control loop alarm rank No. 1, loop No. No. 4 control loop alarm ranking 2nd, loop number No. The alarm ranking of the 3 control loop is assumed to be 3rd. As a result, the display is as shown in FIG.

  As described above, in this embodiment, it is possible to add a display that makes it easy to grasp the alarm ranking to the information being displayed. That is, the convenience for the operator can be improved in a small display device used in a multi-loop system in which screen specifications are designed for general purposes.

  In the present embodiment, the rule that the alarm rank becomes higher as the overheat temperature range is larger is stored in the rank regulation information storage unit 10, but the temperature measurement value PV is insufficient to deviate from the allowable temperature range to the low temperature side. You may make it memorize | store in the prescription | regulation prescription information storage part 10 that the alarm | rank ranking becomes high, so that a temperature width (deviation width) is large. If the lower limit value of the allowable temperature range is TL, the insufficient temperature range is TL-PV. In a state where such a rule is stored, the loop number No. 1-No. It is assumed that the temperature setting values SP1 to SP4 of the four control loops are set to the same value of 100 ° C. The loop number No. 1-No. It is assumed that the measured temperature values PV1 to PV4 of the control loop No. 4 are PV1 = 101 ° C., PV2 = 94 ° C., PV3 = 96 ° C., PV4 = 95 ° C.

  Similarly to the above, if the allowable temperature range set around the temperature setting values SP1 to SP4 is ± 3 ° C., the loop number No. The temperature measurement value PV2 of the control loop No. 2 deviates from the allowable temperature range SP2 ± 3 ° C. to the low temperature side, and the insufficient temperature range is 3 ° C. In addition, the loop number No. The temperature measurement value PV3 of the control loop No. 3 deviates from the allowable temperature range SP3 ± 3 ° C. to the low temperature side, and the insufficient temperature width is 1 ° C. Similarly, the loop number No. The temperature measurement value PV4 of the control loop No. 4 deviates from the allowable temperature range SP4 ± 3 ° C. to the low temperature side, and the insufficient temperature width is 2 ° C. Therefore, the loop number No. 2-No. 4, an alarm requiring urgency is generated, and the alarm ranking determining unit 11 sets the loop number No. No. 2 control loop alarm rank No. 1, loop No. No. 4 control loop alarm ranking 2nd, loop number No. The alarm ranking of the 3 control loop is assumed to be 3rd. As a result, a display similar to that shown in FIG. 6 is obtained.

  Further, the higher the overheat temperature range, the higher the alarm rank, and when the overheat temperature range is the same, the rank definition information storage unit 10 stores a rule that the alarm rank becomes higher as the temperature set value SP becomes higher. Also good. In a state where such a rule is stored, the loop number No. 1-No. It is assumed that the temperature setting values SP1 to SP4 of the control loop No. 4 are set to SP1 = 100 ° C., SP2 = 105 ° C., SP3 = 110 ° C., SP4 = 107 ° C. The loop number No. 1-No. It is assumed that the measured temperature values PV1 to PV4 of the control loop No. 4 are PV1 = 101 ° C., PV2 = 110 ° C., PV3 = 115 ° C., PV4 = 112 ° C.

  Similarly to the above, if the allowable temperature range set around the temperature setting values SP1 to SP4 is ± 3 ° C., the loop number No. 2, no. 3, No. The measured temperature values PV2, PV3, and PV4 of the control loop No. 4 deviate from the allowable temperature ranges SP2 ± 3 ° C, SP3 ± 3 ° C, and SP4 ± 3 ° C, respectively. 2 ° C. Therefore, the loop number No. 2-No. 4, an alarm requiring urgency is generated, but since the overheating temperature range is all 2 ° C., the alarm order determination unit 11 places importance on the high and low of the temperature set values SP2, SP3, SP4, and sets the loop number No. No. 3 control loop alarm rank No. 1, loop No. No. 4 control loop alarm ranking 2nd, loop number No. The alarm order of the control loop 2 is assumed to be the third place.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The present embodiment is an example corresponding to Principle 2 of the invention described above. FIG. 7 is a block diagram showing the configuration of the 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 according to the present embodiment includes a rank regulation 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, and a touch panel function. When an alarm subject to the regulation of the alarm order occurs in a control loop other than the currently displayed control loop in a state where the display element 15a and the loop information display control unit 12 display only one loop of information. The alarm order additional display control unit 16 for additionally displaying the alarm order of control loops other than the currently displayed control loop in the image displayed by the loop information display control unit 12 and the loop information display control unit 12 for one loop. In the state where the alarm rank addition display control unit 16 additionally displays the alarm rank of the control loop other than the currently displayed control loop. When the operator operates the portion of the alarm order that has been additionally displayed, the alarm corresponding transition control unit 17 that switches the screen so as to display only the information of the display target of the control loop corresponding to the operated alarm order. The The display element 15a with a touch panel function constitutes input means capable of operating the screen.

  FIG. 8 is a flowchart for explaining the operation of the display device of this embodiment. The operation of the loop information display control unit 12 is as described in the first embodiment (step 100 in FIG. 8). In this case, as shown in FIG. 2, information corresponding to a specific control loop and a loop number are enlarged on one screen and displayed on the display element 15a.

The information acquisition unit 14a acquires the information necessary for determining the alarm order as in the information acquisition unit 14 of the first embodiment, and is the same type as the currently displayed display item as information of all control loops. Is acquired from an information output device (for example, a general-purpose controller) (step S101a in FIG. 8). For example, loop number no. If the temperature setting value SP and the temperature measurement value PV of the control loop No. 3 are currently displayed, the loop number no. 1-No. The temperature setting value SP and the temperature measurement value PV of the control loop 4 may be acquired.
The operations of the rank definition information storage unit 10, the alarm rank determination unit 11, and the alarm rank display control unit 13 are as described in the first embodiment (steps S102 and S103 in FIG. 8).

  The alarm rank additional display control unit 16 displays an alarm rank in a control loop other than the currently displayed control loop in a state where the loop information display control unit 12 displays the information for one loop in an enlarged manner (YES in step S105 in FIG. 8). If an alarm that is subject to the regulation is generated (YES in step S106 in FIG. 8), the alarm ranking of the control loop other than the currently displayed control loop is added to the image displayed by the loop information display control unit 12. It is displayed (step S107 in FIG. 4).

  FIG. 9 is a diagram showing a display example of the present embodiment. In the example of FIG. 9, the information for one loop (the temperature set value SP and the temperature measurement value PV in the example of FIG. 9) and the loop number (No. 3) are enlarged and displayed on one screen, as in FIG. 7 is an example when the same alarm generation state as in FIG. 6 is entered. As described above, the alarm ranking determining unit 11 is configured to have the loop number No. No. 2 control loop alarm rank No. 1, loop No. No. 4 control loop alarm ranking 2nd, loop number No. Since the alarm ranking of the control loop No. 3 is set to the third ranking, the alarm ranking display control unit 13 sets the loop number no. The background color of the screen 1 on which the control loop information 3 is being displayed is changed, and the fact that the alarm rank is third is displayed in the Δ mark 2 representing the occurrence of an alarm.

  Further, since the alarm order addition display control unit 16 generates an alarm in a control loop other than the currently displayed control loop (control loops of loop numbers No. 2 and No. 4), the loop number No. 2 indicates that the alarm rank is 1 in the △ mark 3-1 indicating the occurrence of an alarm in the control loop. The fact that the alarm rank is second is displayed in the Δ mark 3-2 representing the occurrence of an alarm in the control loop No. 4.

  FIG. 10 is a diagram showing another display example of the present embodiment. In the example of FIG. 10, the information for one loop (the temperature set value SP and the temperature measurement value PV in the example of FIG. 10) and the loop number (No. 3) are enlarged and displayed on one screen, as in FIG. The loop number no. This is an example in which no alarm is generated in the control loop 3 and an alarm is generated in another control loop.

  For example, loop number no. No. 2 control loop alarm rank No. 1, loop No. If the alarm rank of the control loop of No. 4 is assumed to be 2nd, the alarm rank addition display control unit 16 will be notified of the loop number no. 2 indicates that the alarm rank is 1 in the △ mark 3-1 indicating the occurrence of an alarm in the control loop. The fact that the alarm rank is second is displayed in the Δ mark 3-2 representing the occurrence of an alarm in the control loop No. 4.

  On the other hand, the alarm response transition control unit 17 causes the loop information display control unit 12 to enlarge and display the information for one loop, and the alarm rank addition display control unit 16 adds the alarm ranks of control loops other than the currently displayed control loop. When the operator operates the location of the alarm rank additionally displayed by the alarm rank additional display control unit 16 in the displayed state (YES in step S108 in FIG. 8), the control loop corresponding to the operated alarm rank is displayed. The screen is switched to display only the information to be displayed (step S109 in FIG. 8).

  When using the display element 15a with a touch panel function, the operator may touch the location where the alarm ranking on the screen 1 is displayed. For example, in the state shown in FIG. 9, if the operator touches the position of the Δ mark 3-1, the alarm corresponding transition control unit 17 controls the control loop corresponding to the alarm ranking 1 (for example, loop number No. 2). Switch the screen to enlarge only the information to be displayed in the control loop.

  At this time, the display target information may be the same display item as the display item before the screen is switched. For example, before switching the screen, the loop number No. If the temperature setting value SP and the temperature measurement value PV of the control loop 3 are displayed, the loop number No. is displayed on the screen after switching. The temperature setting value SP and the temperature measurement value PV of the control loop 2 may be displayed.

However, the loop number No. In the state where the control loop information 3 is displayed, the alarm corresponding transition control unit 17 does not have information to be displayed on the screen after switching, so the control loop displayed on the screen after switching is not switched. It is necessary to acquire the latest information on the display items of the same type as the display items of the control loop displayed on the screen from the information acquisition unit 14a.
The processes in steps S100, S101a, S102, S103, and S105 to S109 as described above are repeated until the operation of the display device is completed (YES in step S110 in FIG. 8).

  Thus, in this embodiment, when there is a control loop in which an alarm having a higher alarm order than that of the currently displayed control loop is present, the control loop information having a higher alarm order is displayed with a simple operation. Can be migrated.

In the first and second embodiments, the control quantity PV, particularly 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 physical quantity detected by the general-purpose controller. With respect to the alarms in FIG. 5, a rule that the alarm rank becomes higher as the deviation of the physical quantity with respect to the predetermined management range is larger is registered in the rank regulation information storage unit 10, and the alarm rank determination unit 11 acquires from the rank regulation information storage unit 10. If the alarm order is determined based on the defined rules and the physical quantity detected by the general-purpose controller, 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, etc.) The present invention can be applied.
In the first and second embodiments, the display device is described as being separated from the general-purpose controller, but it goes without saying that the present invention may be applied to a display device integrated with the general-purpose controller. Yes.

  Among the display devices described in the first embodiment, the rank definition information storage unit 10, the alarm rank determination unit 11, the loop information display control unit 12, the alarm rank display control unit 13, and the information acquisition unit 14 include a CPU ( Central Processing Unit), a computer having a storage device and an interface, and a program for controlling these hardware resources. Similarly, among the display devices described in the second embodiment, the rank regulation information storage unit 10, the alarm rank determination unit 11, the loop information display control unit 12, the alarm rank display control unit 13, the information acquisition unit 14a, and the alarm The rank addition display control unit 16 and the alarm response transition control unit 17 can be realized by a computer. The CPUs of these computers execute the processes described in the first and second embodiments in accordance with programs stored in the storage device.

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

  DESCRIPTION OF SYMBOLS 10 ... Ranking regulation information storage part, 11 ... Alarm order determination part, 12 ... Loop information display control part, 13 ... Alarm order display control part, 14, 14a ... Information acquisition part, 15, 15a ... Display element, 16 ... Alarm order Additional display control unit, 17... Alarm response transition control unit.

Claims (8)

A display element for image display;
Loop information display control means for displaying information on a display target related to a display target control loop among a plurality of control loops in a control target device on the display element;
Rank definition information storage means for preliminarily storing a rule for determining the alarm rank;
Information acquisition means for periodically acquiring information of all control loops from the information output device;
Of the control loop in which the alarm is generated, based on the rule, the alarm information in the device to be controlled, and the information acquired by the information acquisition unit. An alarm rank determining means for extracting a control loop subject to the regulation of the alarm rank, and determining an alarm rank of the extracted control loop according to the regulation;
Of the control loops to be displayed, the alarm order display control means for displaying the alarm order of the control loop that is defined by the alarm order determining means as the target of the alarm order in the image displayed by the loop information display control means. And
The display device characterized in that the rule for determining the alarm rank is a rule for determining an alarm rank for an alarm of a physical quantity related to a control operation based on a deviation width of the physical quantity with respect to a predetermined management range. The display device according to claim 1,
In addition, when the loop information display control means displays only information for one loop and an alarm subject to the regulation of the alarm order occurs in a control loop other than the currently displayed control loop, A display device comprising: an alarm rank additional display control means for additionally displaying an alarm rank of a control loop other than the control loop in the image displayed by the loop information display control means. The display device according to claim 2, wherein
Furthermore, input means capable of operating the screen of the display element,
The loop information display control means displays only information for one loop, and the alarm order of the control loop other than the currently displayed control loop is additionally displayed by the alarm order additional display control means. And an alarm corresponding transition control means for switching a screen so as to display only information of a display target of a control loop corresponding to the operated alarm order when the operator operates the place of the alarm order. apparatus. The display device according to any one of claims 1 to 3,
The rule for determining the alarm order is to determine the alarm order for the alarm of the temperature measurement value PV based on the deviation of the temperature measurement value PV toward the high temperature side with respect to the preset allowable temperature range around the temperature set value SP. A display device characterized by being prescribed. A loop information display control step for displaying information on a display target related to a display target control loop on a display element among a plurality of control loops in a control target device;
An information acquisition step for periodically acquiring information of all control loops from the information output device;
The stored information is acquired by referring to the order definition information storage means for storing the rules for determining the alarm order, and based on the acquired specifications, the alarm information in the device to be controlled, and the information acquired in the information acquisition step. In addition, an alarm ranking determining step of extracting a control loop that is subject to the regulation of the alarm ranking from among the control loops in which an alarm is generated, and determining the alarm ranking of the extracted control loop according to the regulation;
Of the control loops to be displayed, the alarm order display control step of displaying the alarm order of the control loop that is the target of the alarm order in the alarm order determination step in the image displayed in the loop information display control step. Including
The rule for determining the alarm rank is a rule for determining an alarm rank for an alarm of a physical quantity related to a control operation based on a deviation width of the physical quantity with respect to a predetermined management range. The display method according to claim 5,
Further, when only the information for one loop is displayed in the loop information display control step, an alarm that is subject to the regulation of the alarm order occurs in a control loop other than the currently displayed control loop. A display method comprising: an alarm rank additional display control step for additionally displaying alarm ranks of control loops other than the middle control loop in the image displayed in the loop information display control step. The display method according to claim 6,
Further, only the information for one loop is displayed in the loop information display control step, and the alarm rank of the control loop other than the currently displayed control loop is additionally displayed in the alarm rank additional display control step. A display comprising an alarm corresponding transition control step for switching a screen so that only information on a display target of a control loop corresponding to the operated alarm order is displayed when the operator operates the displayed alarm order part. Method. The display method according to any one of claims 5 to 7,
The rule for determining the alarm order is to determine the alarm order for the alarm of the temperature measurement value PV based on the deviation of the temperature measurement value PV toward the high temperature side with respect to the preset allowable temperature range around the temperature set value SP. A display method characterized by being stipulated.