Industrial machinery control device, information display terminal, and device status information output system

Abstract

In the present invention, device state information including detailed alarm generation and an operation state is promptly displayed even when a device has only a display means of a 7-segment LED.　This industrial machine control device comprises: a 7-segment LED bright spot display encoding unit that converts device state information of the own device into record information of 7 bits, and generates a bright spot display pattern on the basis of the converted record information; and a 7-segment LED output unit that determines the lighting position of the 7-segment LED on the basis of the generated bright spot display pattern, and lights the 7-segment LED.

Description

Technical Field

[0001] The present invention relates to an industrial machine control device, an information display terminal, and a device state information output system that display device state information including alarm occurrence and operation state.

Background Art

[0002] Industrial machine control devices such as numerical control devices and robot controllers that control industrial machines such as machine tools and robots notify operators of alarm information when problems that make operation difficult occur. The operator can restore the industrial machine by identifying and dealing with the abnormal part from the alarm information. For the notification of alarm information, display devices such as HMIs (Human Machine Interfaces) or display devices of information processing terminals connected to a network are often used. In addition, there are cases where an information terminal such as a smartphone or a tablet is used to read the character string or QR code (registered trademark) of the alarm information on the industrial machine display device and display a detailed explanation of the alarm information. In addition, control devices that do not have a display device such as a power supply device or a motor amplifier may notify by simple status display using LEDs such as 7-segment displays. Also, even when there is a display device, LEDs may be used for notification in the event of a hardware failure or a serious software failure. For example, a technique of lighting, extinguishing, or blinking a light-emitting LED of a control device to notify an information terminal such as a smartphone is known. For example, see Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] LED and 7-segment LED displays have limitations in the amount of information they can display, making it time-consuming to identify the cause of a problem. In other words, the written explanations are difficult to understand, and the cause cannot be identified without reading the manual. This leads to an increase in MTTR (Mean Time To Repair) and a decrease in the productivity of industrial machinery. Furthermore, while it's possible to increase the amount of information displayed by increasing the number of LEDs and the number of digits in the 7-segment LED display, this also presents the problem of increased costs. Furthermore, the technology described in Patent Document 1 requires many pulses (flashing of light-emitting LEDs) for data notification, which presents the problem of taking a long time to read on information terminals such as smartphones.

[0005] Therefore, even when only a 7-segment LED display is available, there is a need to quickly display detailed alarm occurrences and device status information, including operating status. [Means for solving the problem]

[0006] (1) One embodiment of the industrial machine control device of the present disclosure comprises a 7-segment LED bright spot display encoding unit that converts device status information of the device into 7-bit record information and generates a bright spot display pattern based on the converted record information, and a 7-segment LED output unit that determines the lighting position of the 7-segment LEDs based on the generated bright spot display pattern and lights up the 7-segment LEDs.

[0007] (2) One embodiment of the information display terminal of the present disclosure comprises: a video acquisition unit that acquires a video of the bright dot display pattern of a 7-segment LED included in an industrial machine control device; a 7-segment LED detection unit that analyzes each frame of the acquired video and detects the bright dot display pattern of each frame; a 7-segment LED bright dot display decoding unit that identifies the lighting position of the bright dot display pattern of each frame of the detected video, generates 7-bit record information, and converts the generated record information into device status information of the industrial machine control device; and a display unit that displays the converted device status information.

[0008] (3) One aspect of the device status information output system of the present disclosure comprises (1) the industrial machine control device and (2) the information display terminal. [Brief explanation of the drawing]

[0009] [Figure 1] This is a diagram showing the functional block configuration of a device status information output system according to one embodiment. [Figure 2] This figure shows an example of a 7-segment LED. [Figure 3] This figure shows an example of device status information. [Figure 4A] This figure shows an example of a bright spot display pattern for each segment. [Figure 4B] This figure shows an example of a bright spot display pattern for each segment. [Figure 4C] This figure shows an example of a bright spot display pattern for each segment. [Figure 5] This figure shows an example of the output of a 7-segment LED display pattern. [Figure 6] This is a functional block diagram showing an example of the functional configuration of an information display terminal. [Figure 7] This is a flowchart explaining the output processing of industrial machinery control devices. [Figure 8] This is a flowchart explaining the display processing of an information display terminal. [Modes for carrying out the invention]

[0010] The following describes in detail, with reference to the drawings, a device status information output system according to one embodiment. Here, we illustrate a case where the industrial machine control device does not have a display device such as a power supply unit, motor amplifier, or I / O module. However, the present invention is also applicable to industrial machines such as machine tools and robots, and to devices that have display devices such as numerical control devices and robot control devices.

[0011] <One Embodiment> FIG. 1 is a diagram of the functional block configuration of a device state information output system according to an embodiment. As shown in FIG. 1, the device state information output system 100 includes an industrial machine control device 1 and an information display terminal 2 such as a smartphone.

[0012] <Industrial machine control device 1> The industrial machine control device 1 is, for example, a power supply unit, a motor amplifier, an IO module, etc. without a display device such as a liquid crystal display. As shown in FIG. 1, the industrial machine control device 1 includes a control unit 10, a 7-segment LED 11, and a storage unit 12. The control unit 10 further includes a 7-segment LED dot display encoding unit 101 and a 7-segment LED output unit 102.

[0013] The 7-segment LED 11 is a 7-segment LED as shown in FIG. 2. As shown in FIG. 2, each of the seven LEDs of the 7-segment LED 11 is assigned a bit from "0" to "6".

[0014] The storage unit 12 is, for example, an SSD (Solid State Drive) or an HDD (Hard Disk Drive), etc., and may store an application program or the like for lighting the 7-segment LED 11 with a dot display pattern according to the device state information of the industrial machine control device 1. The storage unit 12 further includes a device state storage unit 121. The device state storage unit 121 stores device state information indicating the occurrence of an alarm or the operating state of the industrial machine control device 1.

[0015] The control unit 10 includes a CPU, a ROM, a RAM, a CMOS memory, etc., which are configured to be communicable with each other via a bus, and are well-known to those skilled in the art. The CPU is a processor that controls the entire industrial machine control device 1. The CPU reads the system program and application program stored in the ROM via the bus and controls the entire industrial machine control device 1 according to the system program and application program. As a result, as shown in FIG. 1, the control unit 10 is configured to realize the functions of the 7-segment LED dot display encoding unit 101 and the 7-segment LED output unit 102. Various data such as temporary calculation data and display data are stored in the RAM. The CMOS memory is backed up by a battery not shown and is configured as a non-volatile memory that retains the storage state even when the power of the industrial machine control device 1 is turned off.

[0016] The 7-segment LED dot display encoding unit 101, for example, converts the device state information stored in the device state storage unit 121 into 7-bit record information and generates a dot display pattern based on the converted record information. Specifically, when an abnormality occurs in the industrial machine control device 1, for example, the 7-segment LED dot display encoding unit 101 reads the device state information (alarm information) stored in the device state storage unit 121. FIG. 3 is a diagram showing an example of device state information. In FIG. 3, the device state information shows JSON format data, but it may also be a simple character string in ASCII code or may include binary data such as a hash value. The 7-segment LED dot display encoding unit 101 encodes the read device state information into 7 bits one character at a time and converts it into 7-bit record information. When the device state information includes binary data such as a hash value, the 7-segment LED dot display encoding unit 101 may be encoded into 7 bits by a known method such as MIME (Multipurpose Internet Mail Extensions).

[0017] The 7-segment LED dot display encoding unit 101 generates a dot display pattern by assigning 7 bits of data per record to each segment (1 character) in the 7-segment LED 11, which is assigned bits from "0" to "6" based on the converted record information. Figures 4A to 4C show examples of the bright spot display pattern for each segment. For example, if one segment is the character "3", the character code (binary code) is "0x33", and the highlighting pattern will be the pattern shown by the black rectangle in Figure 4A. Also, if one segment is the character "_" (underscore), the character code (binary code) is "0x5F", and the highlighting pattern will be the pattern shown by the black rectangle in Figure 4B. Also, if one segment is the character "," (comma), the character code (binary code) is "0x2C", and the highlighting pattern will be the pattern shown by the black rectangle in Figure 4C. In other words, the bright dot display pattern is not limited to the form of visible numbers or characters.

[0018] The 7-segment LED output unit 102 determines the illumination position of the 7-segment LED 11 based on the illumination pattern for each segment generated by the 7-segment LED illumination display encoding unit 101, and illuminates the 7-segment LED 11. At that time, the 7-segment LED output unit 102 switches to a bright dot display pattern at the frame rate of the video so that a bright dot display pattern of one segment per frame is captured in the video captured by the camera 21 of the information display terminal 2, which will be described later, and lights up the 7-segment LED 11. Figure 5 shows an example of the output of the bright spot display pattern of the 7-segment LED 11. As shown in Figure 5, the 7-segment LED output unit 102 lights up the 7-segment LED 11 with a bright dot display pattern for each segment based on the frame rate of the video captured by the camera 21 of the information display terminal 2. By doing so, for example, if the frame rate of the video from the camera 21 of the information display terminal 2 is 30fps, the 7-segment LED output unit 102 can output 30 characters of data per second via the 7-segment LED 11. Furthermore, the 7-segment LED output unit 102 may, for example, illuminate a predetermined bright dot pattern (leader frame), such as the character "E," on the 7-segment LED 11 before and after illuminating the 7-segment LED 11 with the bright dot display pattern for each segment of the device status information of the industrial machine control device 1, as shown in Figure 5. By doing so, the operator of the information display terminal 2, described later, can determine the start and end of the output of device status information from the 7-segment LED 11 based on the illumination of a predetermined bright dot display pattern (leader frame).

[0019] The 7-segment LED output unit 102 may also be initiated by operator actions, such as repeating a bright dot display pattern or by the operator pressing a push switch (not shown) on the industrial machine control device 1 to start the bright dot display pattern. Furthermore, the display speed (frame rate) of the 7-segment LED 11 may be switchable using a DIP switch, rotary switch, or the like (not shown) on the industrial machine control device 1. Furthermore, the 7-segment LED output unit 102 may be provided with a bright dot display pattern for error detection on the information display terminal 2 side, which will be described later. Specifically, the 7-segment LED output unit 102 may insert a bit-inverted frame one frame at a time, or provide a bright dot display pattern of a fixed length or for each record of error detection codes (CRC).

[0020] <Information display terminal 2> Information display terminal 2 is a smartphone or tablet device equipped with a camera. Figure 6 is a functional block diagram showing an example of the functional configuration of the information display terminal 2. As shown in Figure 6, the information display terminal 2 includes a control unit 20, a camera 21, a display unit 22, and a storage unit 23. The control unit 20 also includes a video acquisition unit 200, a 7-segment LED detection unit 201, and a 7-segment LED bright spot display decoding unit 202.

[0021] Camera 21 is a digital camera or the like, and based on the operator's operation, it captures a video of the bright dot display pattern for each segment of the industrial machine control device 1's 7-segment LED 11, which displays the device status information of the industrial machine control device 1. As described above, since the bright dot display pattern for each segment is displayed on the 7-segment LED 11 in accordance with the frame rate of the video captured by camera 21, camera 21 can capture the bright dot display pattern of each segment in each frame of the video. Camera 21 outputs the captured video to the control unit 20. The video data captured by camera 21 may also be a visible light image such as an RGB color image or a grayscale image.

[0022] The display unit 22 is, for example, a liquid crystal display. As will be described later, the display unit 22 displays device status information detected from the video of the bright dot display pattern of the 7-segment LED 11 of the industrial machine control device 1, and device status explanation information (for example, the cause of the abnormality and how to recover from it) corresponding to the device status information from the device status explanation information 231 stored in the storage unit 23, which will be described later. This allows the operator to recover from an abnormality that has occurred in the industrial machine control device 1 by looking at the device status explanation information displayed on the display unit 22.

[0023] The storage unit 23 is a ROM or the like, and may store an application program that acquires and displays device status information of the industrial machine control device 1 from a video of the bright dot display pattern of the 7-segment LED 11 of the industrial machine control device 1 captured by the camera 21. In addition, device status explanation information 231 may be stored in the storage unit 23. The device status explanation information 231 is information that explains the device status information of the industrial machine control device 1 acquired by the information display terminal 2. For example, if the device status information of the industrial machine control device 1 includes alarm information, the information stored therein explains the cause of the abnormality and recovery method associated with that alarm information.

[0024] The control unit 20 includes a CPU, ROM, RAM, CMOS memory, etc., which are configured to communicate with each other via a bus, and are known to those skilled in the art. The CPU is the processor that controls the information display terminal 2 as a whole. The CPU reads the system program and application program stored in ROM via the bus and controls the entire information display terminal 2 according to the system program and application program. As a result, as shown in Figure 2, the control unit 20 is configured to realize the functions of the video acquisition unit 200, the 7-segment LED detection unit 201, and the 7-segment LED bright spot display decoding unit 202. Various data such as temporary calculation data and display data are stored in the RAM. The CMOS memory is backed up by a battery (not shown) and is configured as a non-volatile memory that retains its memory state even when the power to the information display terminal 2 is turned off.

[0025] The video acquisition unit 200 acquires, for example, a video of the bright dot display pattern of the 7-segment LED 11 of the industrial machine control device 1, which is captured by the camera 21. The video acquisition unit 200 may also acquire the video from a data server (not shown) or the like if the video of the bright dot display pattern of the 7-segment LED 11 of the industrial machine control device 1 is stored in such a server.

[0026] The 7-segment LED detection unit 201 analyzes each frame of the acquired video and detects the bright spot display pattern of each frame. Specifically, the 7-segment LED detection unit uses known image analysis techniques (e.g., edge detection) to acquire the positions of the lit LEDs of the 7-segment LED 11 in each frame of the video, thereby detecting the bright spot display pattern for each frame.

[0027] The 7-segment LED dot display decoding unit 202 identifies the illumination position of the dot display pattern in each frame of the detected video and generates 7-bit record information, and converts the generated record information into device status information of the industrial machine control device 1. If the dot display pattern includes a hash value, the information display terminal 2 stores a table (dictionary) for reverse hash conversion in the storage unit 23, and the 7-segment LED dot display decoding unit 202 can use this table to convert the record information into device status information of the industrial machine control device 1. The 7-segment LED dot display decoding unit 202 reads out the device status explanation information corresponding to the converted device status information of the industrial machine control device 1 from the device status explanation information 231. The 7-segment LED dot display decoding unit 202 displays the converted device status information of the industrial machine control device 1 and the read-out device status explanation information on the display unit 22. By doing so, the operator can restore the industrial machine control device 1 while viewing the device status explanation information displayed on the display unit 22. Alternatively, the operator can contact the support center for the industrial machine control device 1 while viewing the device status explanation information displayed on the display unit 22, allowing the support center to accurately obtain the status of the industrial machine control device 1 and provide appropriate advice to the operator.

[0028] <Output processing of the device status information output system 100> Next, the output processing flow of the device status information output system 100 will be explained with reference to Figures 7 and 8. Figure 7 is a flowchart illustrating the output processing of the industrial machine control device 1. Figure 8 is a flowchart illustrating the display processing of the information display terminal 2. These flows are executed, for example, when the industrial machine control device 1 detects an abnormality or when an operator requests the industrial machine control device 1 to acquire the operating status.

[0029] In step S11 of Figure 7, the 7-segment LED bright dot display encoding unit 101 acquires the device status information of the industrial machine control device 1 stored in the device status storage unit 121.

[0030] In step S12, the 7-segment LED bright dot display encoding unit 101 converts the device status information of the industrial machine control device 1 acquired in step S11 into 7-bit record information, and generates a bright dot display pattern for each segment based on the converted record information.

[0031] In step S13, the 7-segment LED output unit 102 lights up the 7-segment LED 11 in a predetermined bright dot display pattern that indicates the start of outputting device status information of the industrial machine control device 1.

[0032] In step S14, the 7-segment LED output unit 102 lights up the 7-segment LED 11 with the single-segment bright dot display pattern generated in step S12.

[0033] In step S15, the 7-segment LED output unit 102 determines whether or not there is a bright spot display pattern for the next segment. If there is a bright spot display pattern for the next segment, the process returns to step S14. On the other hand, if there is no bright spot display pattern for the next segment, the process proceeds to step S16.

[0034] In step S16, the 7-segment LED output unit 102 lights up the 7-segment LED 11 to display a bright dot pattern for error correction in order to detect errors on the information display terminal 2 side.

[0035] In step S17, the 7-segment LED output unit 102 lights up the 7-segment LED 11 in a predetermined bright dot display pattern that indicates the end of outputting the device status information of the industrial machine control device 1.

[0036] In step S21 of Figure 8, the camera 21 executes an application program in which the operator acquires and displays device status information of the industrial machine control device 1. Upon receiving an instruction from the operator to start imaging based on a predetermined bright dot display pattern of the 7-segment LED 11, which was lit in step S13 to indicate the start of output of the device status information of the industrial machine control device 1, the camera 21 starts capturing a video of the bright dot display pattern of the 7-segment LED 11. Then, upon receiving an instruction from the operator to end imaging based on a predetermined bright dot display pattern of the 7-segment LED 11, which was lit in step S16 to indicate the end of output of the device status information of the industrial machine control device 1, the camera 21 ends capturing the video. The camera 21 stores the captured video in the storage unit 23.

[0037] In step S22, the video acquisition unit 200 reads and acquires the video of the bright dot display pattern of the 7-segment LED 11 of the industrial machine control device 1, which was captured in step S21, from the storage unit 23.

[0038] In step S23, the 7-segment LED detection unit 201 analyzes one frame of the video acquired in step S22 and detects the bright spot display pattern of that frame (one segment).

[0039] In step S24, the 7-segment LED detection unit 201 determines whether or not there is a next frame (segment). If there is a next frame (segment), the process returns to step S23. On the other hand, if there is no next frame (1 segment), the process proceeds to step S25.

[0040] In step S25, the 7-segment LED bright spot display decoding unit 202 identifies the illumination position of the bright spot display pattern for each frame of the video detected in step S23 and generates 7-bit record information.

[0041] In step S26, the 7-segment LED bright dot display decoding unit 202 converts the record information generated in step S25 into device status information for the industrial machine control device 1.

[0042] In step S27, the 7-segment LED bright dot display decoding unit 202 reads out the device status explanation information corresponding to the device status information of the industrial machine control device 1 converted in step S26 from the device status explanation information 231.

[0043] In step S28, the 7-segment LED bright dot display decoding unit 202 displays the device status information of the industrial machine control device 1 converted in step S26 and the device status explanation information read in step S27 on the display unit 22.

[0044] As described above, the industrial machine control device 1 according to one embodiment converts the device status information of its own device into 7-bit record information and generates a bright dot display pattern for each segment based on the converted record information. The industrial machine control device 1 determines the lighting position of the 7-segment LED 11 based on the generated bright dot display pattern for each segment and lights up the bright dot display pattern of each segment on the 7-segment LED 11 according to the frame rate of the video from the camera 21 of the information display terminal 2. As a result, even if the industrial machine control device 1 only has a means of displaying the 7-segment LED 11, it can quickly display device status information including detailed alarm occurrences and operating status, shorten recovery time, and improve operating rate and productivity. Furthermore, since the display of the industrial machine control device 1 uses the user's smartphone or similar device, a device equipped with a multi-digit 7-segment LED for displaying device status information such as alarm information can be used to reduce the number of parts and cut costs. Furthermore, the information display terminal 2 can read 7 bits of data from one frame by identifying the position of the illuminated 7-segment LED 11 from one frame, and the industrial machine control device 1 can shorten the information transmission time for device status information compared to a single light source or a small number of light sources.

[0045] <Example 1> In one embodiment, the information display terminal 2 is a smartphone or tablet, but is not limited to these. For example, the information display terminal 2 may be AR (Augmented Reality) glasses. If the device status explanation information contains a position (for example, the location of an alarm or the location of the port where the alarm occurred), the information display terminal 2 of the AR glasses may overlay the fault location on the industrial machine control device 1 captured by the camera 21.

[0046] <Modification 2> Furthermore, in one embodiment, for example, the information display terminal 2 uses a camera 21 to capture a video of the bright spot display pattern of each segment of the 7-segment LED 11 of the industrial machine control device 1, but it is not limited to this. For example, a video of the bright spot display pattern of each segment of the 7-segment LED 11 of the industrial machine control device 1 captured by another imaging device may be stored in a data server or the like, and the information display terminal 2 may acquire the video from the data server or the like.

[0047] In one embodiment, each function included in the industrial machine control device 1 and the information display terminal 2 can be implemented by hardware, software, or a combination thereof. Here, implementation by software means that it is implemented by a computer reading and executing a program.

[0048] Programs can be stored and supplied to a computer using various types of non-transitory computer-readable medium. Non-transitory computer-readable mediums include various types of tangible storage mediums. Examples of non-transitory computer-readable mediums include magnetic storage media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical storage media (e.g., magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, and semiconductor memory (e.g., mask ROMs, PROMs (Programmable ROMs), EPROMs (Erasable PROMs), flash ROMs, RAMs). Programs may also be supplied to a computer using various types of transient computer-readable mediums. Examples of transient computer-readable mediums include electrical signals, optical signals, and electromagnetic waves. Transitory computer-readable mediums can be supplied to a computer via wired communication channels such as electric wires and optical fibers, or via wireless communication channels.

[0049] Furthermore, the step of writing the program to be recorded on the recording medium includes not only processes that are performed chronologically in that order, but also processes that are not necessarily performed chronologically, but are executed in parallel or individually.

[0050] While this disclosure has been described in detail, it is not limited to the individual embodiments described above. These embodiments can be added, replaced, modified, partially deleted, etc., in any way that does not depart from the gist of this disclosure or from the spirit of this disclosure derived from the claims and their equivalents. Furthermore, these embodiments can be implemented in combination. For example, the order of operations and processes in the embodiments described above are given as examples only and are not limited thereto. The same applies when numerical values ​​or mathematical formulas are used in the description of the embodiments described above.

[0051] The following additional information is disclosed regarding the above embodiments and modifications. (Note 1) The industrial machine control device (1) includes a 7-segment LED bright spot display encoding unit (101) that converts the device status information of the device into 7-bit record information and generates a bright spot display pattern based on the converted record information, and a 7-segment LED output unit (102) that determines the lighting position of the 7-segment LED (11) based on the generated bright spot display pattern and lights up the 7-segment LED (11). (Note 2) The 7-segment LED output unit (102) determines the illumination position of the 7-segment LED (11) by assigning 7 bits of data per record of the bright spot display pattern to each segment. (Note 3) The information display terminal (2) includes a video acquisition unit (21) that acquires a video of the bright spot display pattern of the 7-segment LED (11) included in the industrial machine control device (1), a 7-segment LED detection unit (201) that analyzes each frame of the acquired video and detects the bright spot display pattern of each frame, a 7-segment LED bright spot display decoding unit (202) that identifies the lighting position of the bright spot display pattern of each frame of the detected video, generates 7-bit record information, and converts the generated record information into device status information of the industrial machine control device (1), and a display unit (22) that displays the converted device status information. (Note 4) The device status information output system (100) comprises the industrial machine control device (1) specified in Appendix 1 and the information display terminal (2) specified in Appendix 3. (Note 5) The 7-segment output unit (102) lights up the 7-segment LED (11) by adding a predetermined bright spot display pattern before and / or after the bright spot display pattern, and the 7-segment LED detection unit (101) determines the start and / or end of the device status information from the predetermined bright spot display pattern in the video. [Explanation of Symbols]

[0052] 1. Industrial Machinery Control Device 10 Control Unit 101 7-segment LED bright dot display encoding unit 102 7-segment LED output section 11 7-segment LED 12 Storage section 121 Device Status Information 2. Information display terminal 20 Control Unit 200 Video Acquisition Unit 201 7-segment LED detection unit 202 7-segment LED bright dot display decoding unit 21 Cameras 22 Display section 23 Memory section 231 Device Status Explanation Information

Claims

1. A 7-segment LED bright spot display encoding unit converts the device status information of the device itself into 7-bit record information for each segment, and generates a bright spot display pattern assigned to each segment based on the converted record information. A 7-segment LED output unit determines the illumination position of the 7-segment LED based on the generated bright spot display pattern, and illuminates the 7-segment LED by switching to the bright spot display pattern for each of the segments for each frame of the video captured by the information display terminal. Industrial machine control device equipped with the following features.

2. A video acquisition unit that acquires a video of the bright dot display pattern of a 7-segment LED included in the industrial machine control device described in Claim 1, A 7-segment LED detection unit analyzes each frame of the acquired video and detects the bright spot display pattern of each frame, A 7-segment LED bright dot display decoding unit identifies the illumination position of the bright dot display pattern in each frame of the detected video, generates 7-bit record information, and converts the generated record information into device status information of the industrial machine control device. A display unit that displays the converted device status information, An information display terminal equipped with the following features.

3. The industrial machine control device according to claim 1, The information display terminal described in claim 2, A device status information output system equipped with the following features.

4. The 7-segment LED output unit lights up the 7-segment LED by applying a predetermined bright spot display pattern before and / or after the bright spot display pattern. The device status information output system according to claim 3, wherein the 7-segment LED detection unit determines the start and / or end of the device status information from the predetermined bright spot display pattern in the video.

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