WO2014184897A1

WO2014184897A1 - Programmable display unit

Info

Publication number: WO2014184897A1
Application number: PCT/JP2013/063550
Authority: WO
Inventors: 和裕林; 健吾小荒
Original assignee: 三菱電機株式会社
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2014-11-20
Also published as: CN105210141B; TW201443851A; TWI543136B; CN105210141A; JP5554458B1; JPWO2014184897A1

Abstract

Provided is a programmable display unit (100) having a display (105) for displaying a screen indicating the operating conditions of connected control devices (101₁-101_n), and a touch panel (106) for performing operations on the control devices (101₁-101_n), wherein the unit includes an operational state display part (102) serving as a display means different from the display (105), and capable of lighting up in any of a plurality of illumination patterns, regardless of whether the display (105) is in screensaver mode, and a controller (107) for prompting the operational state display part (102) to light up in an illumination pattern corresponding to the condition of the device itself and the conditions of the control devices (101₁-101_n).

Description

Programmable display

The present invention relates to a programmable display that is connected to a control device and has a function of displaying information on the control device and making settings for the control device.

The programmable display is connected to a control device such as PLC (Programmable Logic Controller), and has the function of displaying the operating status of the connected control device and giving a control instruction to the control device by operation input. It is used in various industrial fields such as FA (Factory Automation).

The screen display function of the programmable display and the function of controlling the control device can be freely designed by the screen designer using dedicated screen creation software. The programmable display is used as a monitoring / operation device for the control system, and is viewed or operated by the operator. That is, there are two users of the programmable display device, a screen designer and an operator.

In general, since a programmable display is used indoors and outdoors, it is required to ensure visibility according to the surrounding usage environment, and thus has a function of adjusting the luminance of the display unit. Further, an LED (Light Emitting Diode / Light Emitting Diode) lamp for notifying the operator of the operating state of the programmable display is provided on the front surface of the programmable display. For example, this LED is turned on while the programmable display is in operation, and is turned off when the programmable display is in a stopped state.

In a control system using a programmable display, it is connected to a single or a plurality of control devices by serial connection such as RS232 / RS422 / RS485 provided in the programmable display or Ethernet (registered trademark).

In the above control system, for example, when an abnormality occurs in the control device connected to the programmable display, an alarm object or lamp that displays an arbitrary alarm message created in advance by the screen designer on the screen of the programmable display An object can be notified of an abnormality.

Also, some programmable displays have a function to enter screen save state when there is no input operation for a certain time and to darken the screen display. When the screen is dark, it may be difficult to distinguish whether the screen is being saved or because the backlight has failed. For such problems, there is a function of notifying whether the reason for darkness is screen saving or backlight failure, depending on the lighting color and lighting cycle of the LED lamp.

On the other hand, Patent Document 1 proposes a method of notifying the state of the control system by switching the emission color of the backlight provided on the back of the panel with a programmable display that performs monochrome display.

In general, a programmable display has a mechanism for notifying the operator of the state of the control device by monitoring the device value of the control device and turning on the lamp or displaying a message (comment) according to the result. It is prepared.

JP 2007-199559 A

The main use of programmable displays is to grasp the operating status of control systems. As the operating state notification means, there are an alarm object and a lamp object as described above. At this time, since the operator makes a transition to a screen on which an alarm object or lamp object for confirming the state of the control system on the programmable display is confirmed, it may take time to confirm the state.

Since the technique disclosed in Patent Document 1 notifies the state of the control system by the emission color of the backlight, the state of the control system can be confirmed without depending on the screen displayed on the programmable display.

However, from the viewpoint of recent energy saving measures and the protection of the display unit, the screen may be in a screen save state when there is no input operation for a certain period of time on the programmable display. At this time, in the method of notifying the state of the control system by a lamp or a message or the method of Patent Document 1, the state of the control system cannot be confirmed unless the operator depresses the screen of the programmable display to cancel the screen save state. There was a problem.

The present invention has been made in view of the above, and an object thereof is to obtain a programmable display capable of notifying the operator of the state of the control system without depending on the screen save state or the state of the displayed screen. And

In order to solve the above-described problems and achieve the object, the present invention includes a display unit for displaying a screen indicating an operating state of a connected control device, and an operation unit for performing an operation on the control device. A programmable display device, which can be turned on in any of a plurality of lighting patterns regardless of whether the display unit is in a screen save state, and an operation state display unit which is a display means different from the display unit; The operation state display unit includes a control unit that turns on the lighting pattern corresponding to the state of the own device and the state of the control device.

The programmable display device according to the present invention has an effect that the state of the control system can be determined at a glance regardless of the screen being displayed and even when the screen is not being displayed.

FIG. 1 is a diagram showing a configuration of a control system to which a programmable display according to an embodiment of the present invention is applied. FIG. 2 is a functional block diagram of the programmable display according to the embodiment. FIG. 3 is a diagram illustrating an example of lighting pattern control device information. FIG. 4 is a diagram illustrating an example of lighting pattern control conditions. FIG. 5 is a diagram illustrating an example of lighting pattern information. FIG. 6 is a diagram illustrating an example of setting items set in the lighting pattern information as the lighting pattern of the operation state display unit. FIG. 7 is a flowchart of lighting control of the programmable display according to the embodiment.

Hereinafter, embodiments of a programmable display according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is a diagram showing a configuration of a control system to which a programmable display according to an embodiment of the present invention is applied. The control system 103 includes a programmable display 100, a plurality of control devices 101 ₁ to 101 _n, and a network 104 that connects the programmable display 100 and the control devices 101 ₁ to 101 _n . The programmable display device 100 communicates with one or more of the control devices 101 ₁ to 101 _n and takes a 1-to-N (N is an integer of 1 or more) communication form. The programmable display device 100 includes an operation state display unit 102. The programmable display device 100 notifies the operator of the state of the programmable display device 100 itself and the control system 103 by the operation state display unit 102.

Here, the operation state display unit 102 includes a green LED 102a whose emission color is green and a red LED 102b whose emission color is red, and the display color of the operation state display unit 102 is a green display by light emission of only the green LED 102a. Further, red display by light emission of only the red LED 102b and orange display by simultaneous light emission of the green LED 102a and the red LED 102b are possible. The lighting cycle of the operation state display unit 102 is set to two patterns of lighting and blinking. Further, the lighting luminance is set in two stages of high luminance and low luminance.

The control devices 101 ₁ to 101 _n include devices 108 ₁ to 108 _m . 1 and 2, the devices 108 ₁ to 108 _m are incorporated in the control devices 101 ₁ to 101 _n , but they may be externally attached.

FIG. 2 is a functional block diagram of the programmable display according to the embodiment. The programmable display 100 includes a peripheral device communication I / F (Interface) 202 for communicating with the screen data creation device 200, a control device communication I / F 201 for communicating with the control devices 101 ₁ to 101 _n , a non-volatile memory 207, and a volatile memory. Control memory 208, a control register 208 for controlling the operation state display unit 102, and a control circuit 209.

The programmable display 100 includes a display 105, a touch panel 106, and a control unit 107.

The nonvolatile memory 207 is a storage unit that stores setting information 300 set by the screen creation software included in the screen data creation device 200. The setting information 300 includes lighting pattern control device information 203 indicating lighting pattern control settings (lighting pattern control device) among the devices 108 ₁ to 108 _m , and the lighting pattern control device values. The lighting pattern control condition 204 which shows the conditions which switch a lighting state, The lighting pattern information 205 which identifies the lighting pattern when the lighting pattern control condition 204 is satisfied is included. The nonvolatile memory 207 stores a lighting control program 206.

The display 105 is a display device for displaying information of the control devices 101 ₁ to 101 _n . The touch panel 106 is an input device for performing operations on the control devices 101 ₁ to 101 _n . The control unit 107 controls each unit in the programmable display 100 to control the operation of acquiring the device values of the devices 108 ₁ to 108 _m from the control devices 101 ₁ to 101 _n and the lighting pattern of the operation state display unit 102. Perform operations. Further, the control unit 107 reads out and executes the lighting control program 206 stored in the nonvolatile memory 207 to determine whether or not the lighting pattern control condition 204 is satisfied (the devices 108 ₁ to 108 _m are in a specific state). Monitor). Furthermore, the control unit 107 monitors the state of the display 105 and detects a failure when a backlight failure occurs. Further, the control unit 107 performs a process of darkening the display 105 and setting the screen save state when the touch panel 106 is not operated for a certain period of time.

FIG. 3 is a diagram illustrating an example of lighting pattern control device information. In the example of FIG. 3, among the devices 108 ₁ to 108 _m , three devices A, B, and E are designated as lighting pattern control devices.

FIG. 4 is a diagram showing an example of lighting pattern control conditions. In the example of FIG. 4, the condition that the sum of the device value of device A and the device value of device B is equal to or greater than a predetermined threshold C (condition 1), and the device value of device B and the device value of device E are both threshold values. A condition of D or more (condition 2) is set.

FIG. 5 is a diagram showing an example of lighting pattern information. In the example of FIG. 5, a lighting pattern of lighting in red and with high luminance is set as a lighting pattern in a backlight failure state. In addition, as a lighting pattern in the screen save state, a lighting pattern of lighting in orange and with low luminance is set. In addition, as a lighting pattern during normal operation, a lighting pattern of lighting in green and with low luminance is set. Further, as a lighting pattern when Condition 1 is satisfied, a lighting pattern of lighting in green and with high luminance is set. In addition, as a lighting pattern when the condition 2 is satisfied, a lighting pattern of blinking in red and low luminance is set.

At the start of operation of the programmable display device 100, the control unit 107 expands the setting information 300 stored in the nonvolatile memory 207 to the volatile memory 210. Furthermore, the control unit 107 communicates with the control devices 101 ₁ to 101 _n through the control device communication I / F 201 during the operation of the programmable display device 100 and is indicated by the lighting pattern control device information 203 among the devices 108 ₁ to 108 _m. Get device values for The control unit 107 executes the lighting control program 206 to monitor the device value of the device indicated by the lighting pattern control device information 203 and the state of the own device, and sets the conditions set in the lighting pattern control condition 204. When satisfied or when a backlight failure is detected, the lighting state of the operation state display unit 102 is controlled by updating the value of the control register 208 statically or periodically based on the lighting pattern information 205. . That is, the control unit 107 lights up the operation state display unit 102 with a lighting pattern associated with the states of the devices 108 ₁ to 108 _m .

The case where the lighting pattern control device information 203, the lighting pattern control condition 204, and the lighting pattern information 205 are set as shown in FIGS. 3 to 5 will be described as an example. The control unit 107 sets the control device communication I / F 201 as follows. The device values of device A and device B are acquired from the control devices 101 ₁ to 101 _n, and the acquired device values are stored in the volatile memory 210. Then, the control unit 107 updates the value of the control register 208 based on the lighting pattern information 205 when the sum of the device values of the device A and the device B stored in the volatile memory 210 is equal to or greater than the threshold value C. To do. Based on the value of the control register 208, the control circuit 209 turns on the operation state display unit 102 in green and with high brightness, so that the condition set in the lighting pattern control condition 204 is satisfied. The operator is notified by the lighting pattern. Further, when detecting a backlight failure, the control unit 107 updates the value of the control register 208 based on the lighting pattern information 205. Based on the value of the control register 208, the control circuit 209 turns on the driving state display unit 102 in red and with high brightness, so that the operator is notified by the lighting pattern of the driving state display unit 102 that a backlight failure has occurred. Is done.

Here, the setting items set in the lighting pattern information will be described. FIG. 6 is a diagram illustrating an example of setting items set in the lighting pattern information as the lighting pattern of the operation state display unit. In this example, twelve display states can be set in the lighting pattern information 205 by a combination of three setting items of the lighting color 51, the lighting cycle 52, and the lighting luminance 53. Therefore, in addition to the backlight failure state, the screen save state, and the normal operation state, conditions corresponding to nine states are set in the lighting pattern control condition 204 to switch the LED display corresponding to an arbitrary state. It can be carried out.

For example, the lighting pattern control condition 204 is set so that the abnormality detection signal on the control system 103 side specified by the screen designer is triggered, and the lighting color of the operation state display unit 102 is changed based on the lighting pattern information 205 Then, the operator can grasp the state of the control system 103 regardless of the screen displayed on the display 105 by checking the driving state display unit 102. Time to judge abnormality is shortened.

Note that the operating state display unit 102 can increase the lighting color as a configuration having light emitting diodes of three colors of red, blue, and green. Further, the lighting brightness of the operation state display unit 102 can be controlled in multiple stages, or the lighting pattern can be controlled by specifying the lighting cycle in multiple stages. The multi-level control of the lighting luminance can be performed by the control circuit 209 adjusting the duty ratio of the lighting time length of the green LED 102a and the red LED 102b by pulse width modulation (pulse PWM) control. Further, the lighting color can be changed by the control circuit 209 adjusting the lighting brightness of the green LED 102a and the red LED 102b. Also, the lighting cycle can be controlled by changing the cycle in which the control circuit 209 repeats turning on / off the green LED 102a and the red LED 102b.

Here, the function of the programmable display device 100 notifying the operator of the operation state display unit 102 when the backlight is broken or the screen is being saved will be described. FIG. 7 is a flowchart of lighting control of the programmable display according to the embodiment. When the control unit 107 detects a backlight failure of the display 105 (step S10 / Yes), the control unit 107 performs a control process for displaying a backlight failure state (step S11). In the backlight failure state display control process, the control unit 107 updates the value of the control register 208 based on the lighting pattern associated with the backlight failure state in the lighting pattern information 205. The control circuit 209 controls the lighting state of the driving state display unit 102 based on the value of the control register 208, so that the operator is notified by the lighting pattern of the driving state display unit 102 that a backlight failure has occurred. .

If the display 105 is not in the backlight failure state (step S10 / No) and the condition set in the lighting pattern control condition 204 is satisfied (step S12 / Yes), the control unit 107 performs control processing for operating state display. Is performed (step S13). In the operation state display control process, the control unit 107 updates the value of the control register 208 based on the lighting pattern associated with the condition established in the lighting pattern information 205. The control circuit 209 controls the lighting state of the driving state display unit 102 based on the value of the control register 208, so that the lighting pattern of the driving state display unit 102 is met when the condition set in the lighting pattern control condition 204 is satisfied. To notify the operator.

If the condition set in the lighting pattern control condition 204 is not satisfied (step S12 / No) and the screen is in the screen save state (step S14 / Yes), the control unit 107 performs control processing for screen save state display. (Step S15). In the screen save state display control process, the control unit 107 updates the value of the control register 208 based on the lighting pattern associated with the screen save state in the lighting pattern information 205. The control circuit 209 controls the lighting state of the driving state display unit 102 based on the value of the control register 208, so that the operator is notified of the screen saving state by the lighting pattern of the driving state display unit 102.

If it is not in the screen save state (step S14 / No), the control unit 107 performs the normal operation display control process (step S16). In the normal operation display control process, the control unit 107 updates the value of the control register 208 based on the lighting pattern associated with the normal operation in the lighting pattern information 205. Based on the value of the control register 208, the control circuit 209 controls the lighting state of the operation state display unit 102, so that the operator is notified of the normal operation state by the lighting pattern of the operation state display unit 102.

Since the operator may misoperate the programmable display device 100 in the backlight failure state, it is preferable to give the highest priority to the backlight failure state display control process as in the above example. Further, as described above, it is preferable to prioritize the operation state display control process over the screen save state display process so that the state of the control system 103 can be confirmed even in the screen save state.

The above example is a case where there is only one operation state display unit 102 mounted on the programmable display 100, but when a plurality of operation state display units 102 are mounted on the programmable display 100, the present invention is limited to this example. There is no. That is, two or more states may be displayed simultaneously. For example, it is possible to display that the condition set in the lighting pattern control condition 204 is satisfied and the screen is in a save state by using two operation state display units 102.

The type of LED, the hardware configuration for controlling the LED, the behavior during operation of the programmable display and the method for storing the setting information are not limited to the above-described embodiment.

As described above, the programmable display according to the present invention can determine the state of the control system at a glance, regardless of the screen being displayed, and even when the screen is not being displayed. This is useful in that it can be grasped early.

51 lighting color, 52 lighting cycle, 53 lighting brightness, 100 programmable display, 101 ₁ to 101 _n control device, 102 operation status display unit, 102a green LED, 102b red LED, 103 control system, 104 network, 105 display, 106 Touch panel, 107 control unit, 108 ₁ to 108 _m device, 200 screen data creation device (screen creation software), 201 control device communication I / F, 202 peripheral device communication I / F, 203 lighting pattern control device information, 204 lighting Pattern control condition, 205 lighting pattern information, 206 lighting control program, 207 nonvolatile memory, 208 control register, 209 control circuit, 210 volatile memory.

Claims

A programmable display having a display unit for displaying a screen showing an operating state of a connected control device, and an operation unit for performing an operation on the control device,
Regardless of whether or not the display unit is in a screen save state, it can be lit in any of a plurality of lighting patterns, and an operation state display unit that is a display means different from the display unit,
A programmable display comprising: a control unit that lights the operation state display unit with a lighting pattern corresponding to the state of the device itself and the state of the control device.
When the control unit is in a state where the backlight of the display unit has failed, the control unit controls the lighting of the operation state display unit with a lighting pattern corresponding to the state in which the backlight has failed. The programmable display according to claim 1, wherein the programmable display is performed with priority over lighting of the operation state display unit in a lighting pattern corresponding to the state of the apparatus.
The control unit turns on the operation state display unit with a lighting pattern corresponding to the state of the control device, and turns on the light corresponding to the screen save state, even when the own device is in the screen save state. The programmable display according to claim 1, wherein the programmable display is performed with priority over lighting of the operation state display unit in a pattern.
The said control part makes the said driving | running state display part light by the lighting pattern matched with the state of the device which the said control apparatus has, The programmable display of any one of Claim 1 to 3 characterized by the above-mentioned. .
A lighting pattern control condition in which a condition for controlling the lighting pattern of the operation state display unit is defined by a device value of the device, and lighting pattern information indicating an association between the condition and the lighting pattern of the operation state display unit are stored. A storage unit,
The said control part makes the said driving | running state display part light by the lighting pattern linked | related with the conditions established by the said lighting pattern information, when satisfy | filling the conditions defined by the said lighting pattern control condition. Item 5. The programmable display according to item 4.