JP2526935B2 - Screen display method for display device for control device - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

INDUSTRIAL APPLICABILITY The present invention is combined with a control device such as a sequencer for controlling a controlled device such as a mechanical device, and displays screen data showing an operating state, a fault state, an operation guide, etc. of the controlled device on a screen having a predetermined display capacity. A method for displaying the screen of the device,
The present invention relates to a screen display method in which the control device minimizes the amount of data sent to the display device for screen display, especially when the total amount of screen data to be displayed on the screen at the same time exceeds the display capacity. The present invention relates to a screen display method capable of performing effective display as much as possible. In the drawings below, the same reference numerals indicate the same or corresponding parts.

[Prior art]

Some display devices of this type receive display data sent from an external device, store the display data, and output the stored display screen data. On the other hand, in accordance with data designated by a signal line from the outside, a device for displaying built-in image data or character string data, for example, display screen data is stored in advance in the memory of the display device itself and stored in the display screen data. There is also one that attaches a code number, receives a screen code number from an external device, and outputs a designated display. This display content may be a figure, a picture, or the like, or may be only a character example, and in some cases, these may be combined.

[Problems to be Solved by the Invention]

However, such a display device has the following problems. (1) When a mechanical device (controlled device) to be monitored has an abnormal state within a short period of time, it is switched to new data without checking the contents displayed previously, It is not possible to accurately grasp the state of the mechanical device. (2) On the other hand, if the display output is held until the display output is confirmed according to the display screen code number sent from the control device, the latest status on the machine device side is grasped conversely this time. There is a problem that it can not be done. (3) Next, the screen code number sent from the machine side at the time of an abnormality is stored, and the display content is changed on the display side at regular time intervals or the operation provided on the display side according to the stored content. It is possible to confirm the display contents by operating the switch and changing the display output, but in this case as well, only screen data for one screen code number is displayed on one screen, and the screen data In some cases, data other than the title may have low priority, and it is necessary to check the screen data one screen at a time from the oldest one, which makes it difficult to grasp the overall operating status of machinery. There is. (4) In addition, some of such display devices generally have a CRT as a part of a computer application system and a control device for controlling the CRT, and various displays are performed by the control device. However, such a system has a problem in that it is large in size for displaying the state of a mechanical device controlled by the sequencer and is more expensive than the sequencer, which is not practical. An object of the present invention is to allow a display device to store screen data for each screen code number separately for a title and its description, and to store the amount of screen data. Each time a screen code is received), a valid display period is assigned to that screen code, when a new screen code is entered, when the valid display period for a previously received screen code disappears, or a confirmation key, content display key, scroll Limited capacity is provided by providing a display method for displaying all screen data of the currently effective screen code or screen data selected from this screen data in a predetermined priority at the time of key operation. It is intended to be able to accurately display a plurality of states that have occurred in a short time in the controlled device on the screen. Another object of the present invention is to make the display device small and inexpensive by using a so-called flat type using an LCD, a plasma display or the like.

[Means and Actions for Solving Problems]

In order to achieve the above-mentioned object, in the invention described in claim 1, it is combined with a control device for controlling a controlled device such as a mechanical device, and predetermined screen data indicating a state of the controlled device is displayed. In a screen display method of a display device for a control device for displaying on a screen having a display capacity, the display device displays screen data including a predetermined title and description for each screen code for specifying screen data and the amount of the data. Remember
Each time the screen code is received from the control device, a period during which the display of the screen data is valid for the screen code, and a predetermined period starting from the reception time (hereinafter referred to as a display valid period) Is set, and the titles and explanations that form the screen data for each screen code are given priority, and the time of receiving the new screen code, the display valid period corresponding to each screen code already received, At the time of disappearance, or at the time of inputting the predetermined signal from the operation signal input means for inputting a predetermined signal,
When the total amount of screen data corresponding to the screen code currently in the display valid period exceeds the display capacity, screen data is displayed in accordance with the priority order of the screen data corresponding to the screen code in the display valid period. It is characterized in that only screen data prioritized from the constituent titles and explanations is displayed on the screen. In the invention described in claim 1, when the controlled device has a plurality of states in a short time and cannot be displayed on the screen of the limited display capacity, each state is changed. In the screen data for each screen code to be displayed, important data is displayed with priority, for example, when the screen data is composed of a title and an explanatory note, and the priority order is given in the order of the title and the explanatory note. Displays only the preferred titles on the screen and displays multiple states that have occurred in a short period of time. Further, as in the invention described in claim 2, the screen code for the screen data for which the operation signal input means does not require subsequent display of the screen data displayed on the screen. Display confirmation signal input means for specifying, or when the total amount of screen data corresponding to the screen code currently within the display valid period exceeds the display capacity, the screen data displayed on the screen is designated. Content display signal input means for instructing to display all screen data related to the screen code on the screen, or a screen corresponding to the screen code currently within the display valid period when the display capacity is exceeded. Of the data, at least for each screen code arranged in a predetermined order, scroll signal input means for scrolling the display of the title on the screen And, the operation status or an abnormal status of the controlled devices which require is displayed on the screen.

【Example】

FIG. 4 shows a connection example of the display device of the present invention and its external device. Reference numeral 1 is a main body of the controlled device, for example, for assembly, work,
Any control object such as a machine for inspection or a maintenance device for temperature and humidity may be used. These controlled devices 1 are controlled by an external control device 2 such as a sequence. The term "external" means an external device for the flat display device 3. Controlled device 1 and external control device 2
Does not necessarily have to be placed separately, and in many cases, the external control device 2 is often housed in the controlled device 1. Reference numeral 4 denotes a control cable for the external control device 2 to control various loads such as a motor and a valve in the controlled device 1. Reference numeral 3 is a flat display device which is the main subject of the present invention, and the display device 3 is connected to the external control device 2 via a signal line 5. A signal indicating the operating state or abnormal state of the controlled device 1 is sent from the external control device 2 to the display device 3 via the signal line 5 every moment. FIG. 3 shows a system configuration diagram of the display device 3. Reference numeral 11 is a microcomputer (abbreviated as "microcomputer") that controls the entire functions of the display device 3, reference numeral 12 is a character generator that creates pattern data of display graphics such as characters, and reference numeral 13 is an EEPROM that stores the program of the microcomputer 11 and display screen data. ROM consisting of etc., 14 is R of the microcomputer 11
AM, and the microcomputer system of the display device 3 is configured in this manner. This microcomputer system has a flat display panel 16, and fixed screen data to be displayed on the display panel 16 is transferred to the RAM 14 via the loader 17 or set in the ROM 13. The microcomputer 11 is connected to the external control device 2 via the signal line 5. When the external control device 2 side has an abnormal state, the microcomputer 11 directly receives the buzzer control signal through the signal line 5 and activates the buzzer 21 to notify the occurrence of the abnormal state. However, in this case, the microcomputer 11 does not necessarily have to directly receive the buzzer control signal from the external control device 2, but the display image signal transmitted from the external control device 2 to the microcomputer 11 has a meaning, and the meaning of this signal The buzzer 21 may be automatically operated by the microcomputer 11 judging. It is also necessary to stop the operation of the buzzer via the buzzer stop switch 22 after confirming the operation of the buzzer 21 as a matter of course. Here, the use of a sequencer (programmable controller) as the external control device 2 is mainly considered, and the display device 3 shown in FIG. 3 must be a simpler system than this sequencer. 1A to 1E show various display examples on the screen F of the display panel 16 in the display device 3. In this example, the screen F has a display area composed of line number LN values 1 to 6. The two-digit number such as 03,06, ... at the left end of screen F is the screen code PC for designating the screen data,
The character string following the screen code PC on the same line as this screen code PC is the title D1 of the screen data corresponding to this screen code. In the line following the screen code PC, the character string following the title D1 is the explanation D2 (D21, D22, ...) Associated with the title D1. Now, the figure (A) is the screen code PC that should be displayed on the screen.
9 shows a display example when there is only one. In other words, it shows the case where only the screen code PC with the value "03" is sent from the external control device 2 to the display device 3 after a while, and the other screen code PC is not sent subsequently. ing. When the display device 3 receives the screen code PC from the external control device 2 in this way, a predetermined display effective period is assigned to the screen code PC from the time of reception. Here, the display valid period is a period determined in advance for each screen code PC, and within this period, the relevant screen code PC (and its screen data) is handled as being displayed. However, such as when all the valid screen data cannot be displayed on the screen F at one time due to the increase in the number of screen code PCs within this display valid period, the relevant screen is displayed over the entire display valid period. The data is not always displayed. Also, the display of the screen code PC (and its screen data) that has passed the display valid period is not performed unless the screen code PC is newly received. In FIG. 1, the screen code PC and the title D1 are always displayed in an integrated form, but the screen code PC may be omitted and only the title D1 may be displayed. By the way, when the microcomputer 11 in the display device 3 receives the screen code PC value "03" as described above, it corresponds to the screen code PC value "03" in the ROM 13 or the RAM 14 in advance on the screen F of the display panel 16. The title D1 "abnormal water temperature" that is stored in memory and the explanation D2 (D21) "Inspect cooling water" added to the title D1 are displayed. In this case, there is no other screen data to display, so screen code PC
And the title on the second line of the line number LN, and the description D21 on the fourth line, so that the remaining lines of the first, third, fifth, and sixth are blank lines so that they can be easily understood by the user of the display device. ing. When only one screen code PC is sent from the external control device 2 as shown in FIG. 1 (A), the user of the display device 3 can easily confirm the content. However, when an abnormal state occurs in the controlled device 1, the influence thereof may reach other parts, and as a result, a new abnormality may occur. In many cases, it is important to accurately understand the process of occurrence of an abnormal state in order to properly deal with this abnormality. Therefore, these abnormalities that have occurred within a short time are displayed, for example, as shown in FIGS. FIG. 11B shows a display example when the display device 3 newly receives one screen code PC value “06” following the state of FIG. In this case, the display contents of FIG. 9A are moved up one line at a time and stored in the first to third lines of the screen F, and new screen data is displayed between the fourth to sixth lines. Here, "Abnormal transport section" in the 4th line is the title D1 for the new screen code PC value "06", and the explanatory note D2 (D21) in the 5th line saying "The transport section is not operating." Line 6 "Stop the machine and inspect it."
The explanation D2 (D22) is the explanation about the new title of "transport unit abnormality". Next, FIG. 1 (C) shows a display when two screen codes PC "08" and "05" are newly received following the state of FIG. 1 (B). In this case, the figure (B)
Even if the blank line of the second line of 4 is filled, four screen code PC values "0
All screen data for 3 "," 06 "," 08 ", and" 05 "cannot be displayed, so display them with the highest priority. That is, in the example of this figure (C), one screen code In the PC, the screen code PC and its title D1, then the explanation D2 (D2
1) Next, similarly, the former is prioritized in the order of the explanation D2 (D22), and between screen codes PC, the older is prioritized in the order of input to the display device 3. Also, in one screen F, screen code PC (and its title D
1) takes precedence over any other text D2. In this way, in the same figure (C), four screen codes PC (and its title D1) are displayed in each of the first, third, fifth and sixth lines, and two blank lines (second line, An explanation D21 corresponding to the screen code on the first and third lines is displayed in the (fourth line). Next, FIG. 1 (D) is another display example similar to that of FIG. 1 (C), in which case the screen code PC value “03” in the second line is prioritized compared to the other screen code values displayed. Is set to the highest value, the explanation D21 of "Check cooling water" corresponding to the screen code PC value "03" is displayed in the third line. Further, in the example of FIG. 6D, the reception time T1 of each screen code PC is shown on the right end side of the screen F. These time data can be easily realized by incorporating a clock LSI in the microcomputer system shown in FIG. Incidentally, instead of the reception time T1, the elapsed time data after the reception of the screen code PC concerned may be displayed, and this data is useful for analysis of abnormality. In this way, what happened first is displayed by giving priority to the title D1 for each screen code PC, and if there is any other blank line that can be displayed in the screen F, that blank line has a high priority. This is performed by additionally displaying the content such as the explanatory note D2. In order to display according to the priority order as described above, for example, four levels of priorities A to D are specified for each screen code PC value, and first, the A-rank screen code PC and its title are displayed.
D1 may be displayed from the top of the screen, and then B rank and C rank may be displayed in this order. In this case, whether the information is displayed in the order of occurrence of abnormalities and therefore of information to be displayed, or in the order of priority and in the order of occurrence thereof is specified in the program of the microcomputer system of FIG. , Can be selected by operating a switch in the key matrix 23. These functions can be freely realized by using a microcomputer system. Next, FIG. 1 (E) shows that a large number of display devices 3 are displayed in a short time.
For example, a case is shown in which as many as seven screen code PCs are received and all the received screen code PCs cannot be displayed in one screen F. In this example, the maximum number of lines that can be displayed on one screen is 6, so screen code PC that is within the display valid period
When the number of received items exceeds, the display screen is displayed by scrolling (that is, moving up one line at a time and cyclically as if you are looking at a scroll). Is displayed on the 6th line. When it is necessary to see the explanation D2 for each of these screen code PCs, the cursor is positioned at the corresponding code PC in screen F, and then the key for checking the screen code contents in the key matrix 23, That is, when the content display key is operated, this operation is read by the microcomputer 11 and the entire screen data for each screen code PC can be displayed as shown in FIG. The screen data for each screen code PC has the title D1 and the description D2 of its content as described above.
First, the screen code PC and the title D1 are displayed by assigning a priority to each group of the description and the title D1 and the explanatory note 2, and then, if there is a blank line in the display screen, it corresponds to the displayed screen code PC. By displaying the explanatory note D2 having a higher priority among the unexplained explanations D2 to be displayed, it becomes possible for the user to read the whole or a display having a high degree of urgency with priority. In addition, the explanatory note D2 is also subdivided as described above, such as D21 and D22, and by providing a hierarchy of the necessary priority in the subdivided section, a part of the explanatory note is preferentially displayed. It is also possible to do so. FIG. 2A shows the display device 3.
FIG. 9B is a general flow chart showing an embodiment of the screen display control of the microcomputer 11 in the figure, and FIG. 7B is a detailed flow chart showing an embodiment of the screen edit output operation (step S09) in FIG. In the same figure (A), the microcomputer 11 always reads the input of the screen code PC at step S00, and at step S01, counts the display valid period set corresponding to each already received screen code PC (a timer (display). If there is a valid timer, this timer is counted (incremented). If there is no new screen code PC input (step S02, branch N) and there is no count-over of the display valid timer (step S03, branch N), nothing is done and the process returns to step S00 again. If a new screen code PC is received (step S0
2, branch Y), if there is no display output so far (step
S04, branch N), a new display output is performed (step S06), and the display valid timer corresponding to the screen code PC is set (started) for 1 minute, for example. If this display valid timer counts over in step S03 (branch Y), for example, if one minute has elapsed after the display, step
In S09, the display valid timer is stopped, the display relating to the screen code PC corresponding to this timer is terminated, and a new screen is edited and output as described later. If a new screen code PC is received in step S02 (branch Y), and another screen is already being displayed in step S04 (branch Y), a new display corresponding to the new screen code is displayed in step S08. While setting the valid timer, in step S09, new display screen data is edited and displayed from the display screen data so far and the screen data related to the new screen code PC as will be described later. If the display valid timer for each screen code PC counts over at the step S03 (branch Y), it is considered that the display output of the screen data relating to the screen code becomes unnecessary, and as described later in step S09, Delete the screen data and recreate the new edit screen data to display. In addition, the display clear key is a key matrix of the display device 3.
If the clear key is pressed in the area 23, each display valid timer can be cleared and the screen can be displayed in the standby state or not displayed. Apart from such clear key
It is naturally possible to clear the screen from the external control device 2 side via the signal line 5 in the figure. Next, based on FIG. 2 (B), the procedure of the screen edit output of step S09 in FIG. 2 (A) will be described. First, in step S1, it is judged whether or not the display valid timer has timed out. If it is timed out (branch Y), step
Go to S3. If it is not over (branch N), it is determined in step S2 whether or not the confirmation key in the key matrix 23 is pressed (that is, ON). If it is pressed (branch Y), step S3 is executed. If not pressed (branch N), the process proceeds to step S2A. In this step S3, the display of the screen code relating to each of the screen code for which the display valid timer has timed out or the screen code specified by pressing the cursor and pressing the confirmation key is erased, and thereafter (the new corresponding screen is displayed). The display of the relevant screen data is invalid unless there is a code input. In step S2A, it is determined whether or not the content display key in the key matrix 23 is pressed. If it is pressed (branch Y), the process proceeds to step S2B. If not, the process proceeds to step S4. . In this step S2B, the first
Display processing of all screen data related to the screen code on which the cursor is placed as shown in FIG. In step S4, it is determined whether or not the number of screen codes within the received display valid period is larger than 6, and if larger (branch Y), the process proceeds to step S16 to set the priority among the screen codes PC to be displayed. In step S16A, 5 in the set consisting of the screen code PC and its title D1 from the highest priority
Display processing is performed for the group and the number of effective whole screen codes that are actually displayed, that is, the number CN of received screen codes in FIG. In step S16B, it is further determined whether or not the scroll key in the key matrix 23 is pressed. If not pressed (branch N), the process proceeds to step S17, and if pressed (branch Y), the process proceeds to step S16C. move on. In step S16C, it is determined whether or not there are any screen codes that are currently displayed and are not displayed. If there is no screen code (branch N), the process proceeds to step S17, and if there is (step S16C).
16C, branch Y), and proceeds to step S16D. In this step S16D, in the display as shown in FIG. 1 (E), the first to fifth lines on the screen are scrolled by the scroll display method.
A display process is performed in which the display contents up to the line are cyclically moved up one by one in sequence. That is, the display contents (screen code PC and title D1) that were displayed on the first line so far are erased, and the display contents that were displayed on the second line until now are moved to the first line. In the same manner, the display contents that were displayed on the 5th line up to now are moved to the 4th line, and to the 5th line, the screen code that is actually displayed is valid against the screen code that was on the 5th line up to now. PC
Medium, screen code with the second highest priority (however, if the priority of the screen code that was on the 5th line up to now is the lowest of all valid screen codes that are displayed, the highest screen code) PC Make the title D1 displayed. Further, as the received screen code number CN in the sixth line, processing is performed so that the number of all screen codes which are actually displayed is displayed. In this way, the process proceeds to step S17. If the number of display effective screen codes is 6 or less in step S4 (branch N), the process proceeds to step S5. This step
In S5, it is judged whether there is a blank line in the screen F currently displayed,
If yes (branch Y), the process proceeds to step S6. If not (branch N), the process proceeds to step S7. In step S7, display processing is performed only for all display-effective screen codes and their titles, and it is determined in step S8 whether a blank line has been created. If there is a blank line (branch Y), a priority search is performed in step S9, and the highest priority is given to the highest priority among screen code PCs that cannot display the explanation D2 in step S10. The sentence D2 is assigned to one line, the display process is performed, and the process returns to step S8. Thus, as long as there is a blank line, the explanation text D2 is displayed in the order of highest priority. In step S6, the total number of blank lines after the explanation sentence is compared with all the lines of the screen data (that is, the screen code, the title, and the explanation sentence) to be newly displayed this time. If the blank line is larger (branch Y), step
Proceed to S13 to add the current display data to the display so far. If the blank line is smaller in step S6 (branch N), it is checked in step S11 if there is a blank line above the title. If there is a blank line (branch Y), the blank is filled in step S12, Return to S6. If there is no blank line in step S11 (branch N), it is checked in step S14 whether there is a blank line between the title and the explanation of the display data so far. If there is a blank line (branch Y), step S14, The blank lines are filled in S15, and the process returns to step S6. By doing so, it becomes possible to display new screen data without changing the display type of the display data so far. In step S17, the processed display is displayed and output.

【The invention's effect】

According to the present invention, when a plurality of screen codes are transmitted from the external control device to the display device in a short time and all the screen data cannot be displayed on the screen of the display device, the screen data of each screen code is changed. Among them, we decided to use the screen display method that prioritizes the display of important data, so that it is possible to accurately and overall grasp the process of occurrence of the operating status and abnormal status of the external control device. Therefore, there is an effect that the user of the display device can accurately drive the controlled device.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of various display screens according to the present invention, FIG. 2 is a flowchart showing a procedure of screen display control as an embodiment of the present invention, and FIG. 3 is a system configuration of the display device. 4 and 5 are block diagrams showing the basic configuration of the entire system. 1: Controlled device, 2: External control device, 3: Display device, 4: Control cable, 5: Signal line, 11: Microcomputer, 12: Character generator, 13: ROM, 14: RAM, 16: Display panel, 17 :loader,
23: Key matrix, PC: Screen code, D1: Title, D2 (D2
1, D22): Description, T1: Received time, CN: Received screen code number.

Claims (2)

(57) [Claims] 1. A screen display of a display device for a control device, which is combined with a control device for controlling a controlled device such as a mechanical device and displays screen data indicating a state of the controlled device on a screen having a predetermined display capacity. In the method, the display device stores screen data including a predetermined title and description for each screen code for specifying screen data and the amount of the data, and each time the screen code is received from the control device. , A period for which the display of the screen data is valid for the screen code, and a predetermined period (hereinafter referred to as a display valid period) starting from the reception time is set, and the screen data for each screen code is set. In addition to prioritizing the constituent titles and explanations, when the new screen code is received, when the display effective period corresponding to each of the screen codes already received disappears,
Or, at the time of inputting the predetermined signal from the operation signal input means for operating and inputting a predetermined signal, when the total amount of screen data corresponding to the screen code currently in the display valid period exceeds the display capacity, It is characterized in that only the screen data prioritized from the title and the explanatory text constituting the screen data according to the priority order of the screen data corresponding to the screen code within the display valid period is displayed on the screen. Screen display method for display device for control device. 2. The method according to claim 1, wherein the operation signal input means includes the screen code for the screen data which does not need to be displayed thereafter among the screen data displayed on the screen. Display confirmation signal input means for specifying, or when the total amount of screen data corresponding to the screen code currently within the display valid period exceeds the display capacity, the screen data displayed on the screen is designated. Content display signal input means for instructing to display all screen data related to the screen code on the screen, or a screen corresponding to the screen code currently within the display valid period when the display capacity is exceeded. Of the data, scroll signal input means for scrolling the display of the title on the screen for at least each screen code arranged in a predetermined order. Screen display method of the control apparatus for a display device, characterized in that.