JPH01295309A - Switching method for screen of control panel of controller - Google Patents

Abstract

PURPOSE:To enable an operator to surely know the working state of a machine device by giving the priority to the screen switching actions according to the screen codes received from an external controller. CONSTITUTION:A sequencer 11 provided with a function to issue a command including a screen code FC to a microcomputer system 1 and to designate the selection of the screen data stored in a screen memory 3 and a function which reads the operating result of an operation switch 6a via a key encoder 7 and the system 1 to send the operation output to a machine device connected to the sequencer 11 based on said operation result or to transmit a command to the system 1 for switching the display screen of a display panel 6. Then a switching action is carried out between the message display and the alarm display according to the code FC received from the sequencer 11. In such a case, the preference is particularly given to the alarm display. In such a way, the display is carried out in accordance with each degree of emergency.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an operation panel that is combined with a control device such as a sequencer that controls a mechanical device, and which is miniaturized by integrating a display panel and operation switches. The present invention relates to a screen switching method for quickly displaying images accurately. Note that in the following figures, the same reference numerals indicate the same or corresponding parts.

[Conventional technology]

FIG. 4 shows an example of the configuration of a system including the present invention and a conventional operation panel of this type. In the figure, 03 is the operation panel, 11
is an external control device. Note that the term "external" means an external device for the operation panel 03. External control device 11 is a programmable controller (sequencer)
Although this device 11 is most often referred to as a sequencer below, it may also be an electronic device such as a microcomputer. Such a sequencer 11 is a mechanical device 0
1. The sequencer 11 is connected to the mechanical device 01 to be controlled via a control cable 02 to control elements such as motors, solenoids, and electromagnetic valves, and sensors that constitute the mechanical device 01 . The mechanical device 01 may be various types such as a machine tool, a constant temperature oven, an office machine, a printing machine, etc. The operation panel 03 and the sequencer 11 are coupled via an interface bus 9 such as a serial interface bus or an 8-bit input/output bus. The operation panel 03 is equipped with a display panel having a plurality of transparent touch keys on the display surface, and displays an image of each operation switch on the transparent touch key portion of the display surface. It is known that by performing a selection operation, an operation switch displayed on a part of the touch key is equivalently operated, and the sequencer 11 is caused to perform control corresponding to the operation of the operation switch. ing.

[Problem to be solved by the invention]

However, this type of operation panel 03 has the following problems in common. (1) The display contents are changed according to instructions from the sequencer II, but since the display was always switched according to the received screen code, even if a highly important display was being displayed, the display could be changed by receiving the next screen code. It will be erased. (2) When controlling the mechanical device 01, there are two ways to display the operating status during normal operation, and to display the details of the abnormality when an abnormality occurs. On the board, it is not possible to distinguish between these displays. (3) This type of operation panel 03 generally stores the screen code received from the sequencer 11, but since it also stores the screen code of the content that is normally displayed, such as a message, the memory It quickly becomes full, and even if it receives data that seems important, such as abnormal data, it cannot be stored. Therefore, the problem of this invention is to provide a miniaturized operation panel by integrating operation switches and a display panel as a small graphic display, and each time a new image code is received from a sequencer, it is associated with the screen code. When an alarm occurs on a control panel that displays displayed data (screen data) on the display panel, it immediately generates an alarm, displays the alarm name and how to deal with it, and notifies the operator. record data,
In addition, by providing a screen switching method that maintains the screen display until the alarm clear switch is operated, the above-mentioned problem can be solved and the cause of alarm generation can be easily clarified.

[Means and operations for solving the problems] In order to solve the above problems, the method of the present invention provides an operation panel (such as 03) combined with an r control device (sequencer 11, etc.), which comprises: comprises an operation switch (such as 6a) and a display panel (such as 6) for transmitting an operation signal to the controller, and each time a new screen code (such as FC) is received from the control device, screen data corresponding to the screen code is displayed. on the control panel that switches and displays the screen code on the display panel, determines whether the newly received screen code corresponds to an alarm display (via an alarm identification code, etc.), and displays the alarm. If it corresponds to the display (buzzer 14)
It outputs an alarm signal (to RAM 4, etc.), stores the fact that the relevant screen code has been received, and also sends a command to clear the display of the relevant screen data (via alarm clear switch 88, etc.). (1) At least until manual intervention is performed, the switching to the screen data corresponding to the screen code that does not correspond to the alarm display received thereafter shall be stopped.

【Example】

Next, the present invention will be explained in detail based on FIGS. 1 to 3. FIG. 1 shows a system configuration diagram of an operation panel 03 as an embodiment of the present invention. In the drawing, 1 is a microcomputer system as a CPU (Central Processing Unit), 2 is a character generator (CG) that generates display characters, and 3 is a screen memory (for storing graphic data making up the screen and the functions of operation switches). EEPROM), 4 is a data memory (RAM) for holding data received from the sequencer 11, 5 is an internal bus, and 6 is a display panel integrally equipped with an operation switch 6a. However, 6a is not shown alone in FIG. The operation switch 6a may be a transparent touch key arranged on the display surface of the display panel 6, or a switch arranged at a different position from the display panel 6. Note that the transparent touch key is configured such that when a switch item displayed on the display surface of the display panel 6 is touched through a transparent body constituting the transparent touch key, a corresponding switch output is generated from the transparent touch key. The display panel 6 itself is conventionally well known. In addition, 7 is a key encoder (inputs the operation output of the operation switch 6a, encodes this and outputs it to the microcomputer system l).
8 is a display control switch serving as a fixed operation switch. The display control switch 8 includes an alarm clear switch 8a and a buzzer OFF switch, which will be described later. Next, 9 is an interface bus, 10 is a loader for creating a screen to be displayed on the display panel 6, setting the role of the operation switch 6a, etc., and 11 is a sequencer as the aforementioned external control device. The above-mentioned mechanical device 01 (not shown) is connected to the end of this sequencer 11, and this mechanical device O1
The operation procedure (program) is controlled by the sequencer 11. The sequencer 11 has the function of issuing a command including the screen code FC to the microcomputer system 1 to select and specify screen data stored in the screen memory 3, and transmits the operation result of the operation switch 6a to the key encoder 7 and the microcomputer system 1. It has the function of outputting an operation output to the above-mentioned mechanical device connected to the sequencer 11 and issuing a command to the microcomputer system 1 to change the display screen on the display panel 6 based on the result. Further, 14 is a buzzer for notifying the operator of an alarm. Next, FIG. 2 shows an external view of the operation panel 03 as an embodiment of the present invention. In this example, the display panel 6 is integrally equipped with an operation switch 6a consisting of transparent touch keys on the front side of its display surface, and a flat display such as liquid crystal or plasma on the back side. Various programmed images can then be displayed. When the operation switch 6a is pressed, the key encoder 7 transmits the operation to the microcomputer system 1, and the microcomputer system 1 sends an operation signal indicating the operation to the sequencer 1 through the interface bus 9.
1. 8a and 8b represent the display control switches 8 shown in FIG. 1, 8a is an alarm clear switch, and 8b is a buzzer OFF switch. Here, the alarm clear switch 8a is a switch used to clear the alarm display. The alarm/message display function section in the operation panel shown in FIG. 1 cyclically executes the flowchart shown in FIG. 3, and this flowchart will be explained below. In this case, as an initial condition, screen data to be displayed is created in advance using the loader 10, and the data is stored in the screen memory 3 via the interface bus 9. Each screen data has a screen data number. It consists of the title of one screen data, the contents of the screen data, an alarm identification code indicating whether this screen data is alarm data or message data, etc. First, it is determined whether a new screen code FC has been received from the sequencer 11 (step S1), and if it has been received (branch Y), the screen data corresponding to the received screen code FC is read out (step S2). , the alarm identification code in the screen data is checked to determine whether this screen data is alarm data or message data (step 33). If the result of this determination is message data (branch; message), the screen code FC corresponds to alarm data that has already been received, but the screen display has not yet been cleared by the alarm clear switch 8a. It is checked whether there is any (step S4). When such a screen code FC is received, the received screen code is stored in the data memory 4, so the determination is made based on whether or not the received screen code is stored. (This will be explained in detail when alarm data is received.) In this way, if a screen code corresponding to alarm data has already been received (branch Y), alarm data display will be given priority over message data display. Therefore, reception of a new screen code FC associated with the message data is ignored, and one processing is completed. On the other hand, if the screen code FC corresponding to the alarm data has not yet been received (branch N), the title and content of the message screen data associated with the received screen code are displayed on the display panel 6 (step 35). Finish one process. However, if message data has already been displayed, that display is erased and message data corresponding to the newly received screen code FC is displayed. This allows you to monitor the operating status. Now, as a result of the determination in step S3, if the screen data corresponding to the received screen code FC is alarm data (branch; alarm), first output is performed to the buzzer 14 (step S6). The buzzer 14 can be turned off at any time by pressing the buzzer OFF switch 8b.
F can be done. Next, in step S7, the received screen code FC is recorded in the data memory 4. At step 310, alarm screen data corresponding to the received screen code FC is displayed on the display panel 6, and one process is completed. The screen code FC received from the external control device (sequencer) 11 in this way
You can switch between message display and alarm display according to the settings, and give priority to alarm display.
Displays can be made according to the level of urgency.

【Effect of the invention】

According to this invention, priority is given to screen switching based on the screen code received from the external control device, so that the operator can accurately know the operating status of the mechanical device, and when an alarm occurs, The alarm can be immediately recognized by the screen display and buzzer output, and the display has the effect of allowing immediate action to be taken to eliminate the alarm. Furthermore, since only meaningful screen codes such as screen codes that notify alarms among the screen codes received from the external control device 11 are stored, the memory can be used efficiently.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an operation panel as an embodiment of the present invention, FIG. 2 is a front external view of the operation panel, FIG. 3 is a flowchart showing the operation of the main parts of the operation panel, and FIG. 1 is a schematic configuration diagram of an entire system of the present invention and a conventional system. 01: Mechanical device, 11: External control device (sequencer),
03: Operation panel, 4: RAM, 6: Display panel, 6a: Operation switch, 8: Display control switch, 8a: Alarm clear switch, 8b = Buzzer OFF switch, 9:
Interface bus, 14: Buzzer, S ≦ Scarcity: O 1 Figure O 3 Figure 4 Section

Claims (1)

[Claims] 1) An operation panel combined with a control device, comprising an operation switch and a display panel for transmitting operation signals to the control device, and receiving a new screen code from the control device. Each time, on an operation panel that switches and displays screen data corresponding to the screen code on the display panel, it is determined whether or not the newly received screen code corresponds to an alarm display. , If it corresponds to an alarm display, it outputs an alarm signal and memorizes that the relevant screen code has been received, until a command to clear the display of the relevant screen data is input. A screen switching method for a control device operation panel, characterized in that: at least the above switching to screen data corresponding to a screen code that does not correspond to any alarm display received thereafter is stopped.