JP6343199B2 - COMMUNICATION SYSTEM, MOUNTING DEVICE, AND COMMUNICATION DATA PROCESSING METHOD - Google Patents

Description

  The present invention relates to a communication system for controlling the operation of a controlled device when a communication path connecting the control device and the controlled device controlled by the control device is disconnected, a mounting machine using the communication system, and The present invention relates to a communication data processing method.

  Conventionally, for example, in a communication system used in the field of factory automation, there is a communication system in which a control device and a movable part that performs an assembly operation of components are connected by a network via wired or wireless. In this communication system, for example, the control unit controls on / off of a sensor included in the movable unit and activation / deactivation of a drive source (servo motor or the like) via a network. In this type of communication system, various types of fail-safe network constructions have been proposed in order to cope with unforeseen circumstances such as when the network communication path is disconnected (for example, Patent Document 1). For example, in a communication system having a fail-safe function, the movable part is controlled to a preset safe state when it is detected that the network communication path is disconnected.

International Publication WO2003 / 001749

  However, in a communication system used in the field of factory automation, for example, a communication system applied to an electronic component mounting apparatus for mounting an electronic component on a circuit board, a plurality of movable members such as a mounting head, a circuit board transfer device, and a component supply device are used. Since the units are operated and controlled simultaneously, it is not easy to uniquely determine a safe state of each device in advance. For this reason, when a communication path of a network is disconnected, a communication system that can perform appropriate processing according to the situation at the time is desired.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a communication system, a mounting machine, and a communication data processing method capable of performing appropriate processing when a communication path is disconnected. To do.

  The communication system according to the technology disclosed in the present application includes a movable part that performs work on a workpiece, a control part that controls the operation of the movable part, and control information that is transmitted and received between the movable part and the control part through a transmission path. A communication unit that transmits, a detection unit that detects disconnection of the transmission path, and a monitoring unit that detects a working state of the movable unit, and the monitoring unit associates the working state with the processing content corresponding thereto. The conversion table is transmitted in advance from the control unit via the transmission path, and when the detection unit detects the disconnection of the transmission path, the processing content corresponding to the work state at the time of detection is determined from the conversion table and executed. It is characterized by doing.

  Further, a mounting machine according to a technique disclosed in the present application includes the communication system according to any one of claims 1 to 3, and a mounting operation for mounting an electronic component on a circuit board as a work by a movable part. And the control information related to the mounting work is transmitted by the communication system.

  The communication data processing method according to the technique disclosed in the present application includes a movable part that performs work on a workpiece, a control part that controls the operation of the movable part, and control information that is transmitted and received between the movable part and the control part. A communication data processing method for a communication system comprising a communication unit for transmitting a transmission line and a monitoring unit for monitoring the working state of the movable unit, wherein the working state is associated with the processing content corresponding thereto. Are transmitted in advance from the control unit to the monitoring unit via the transmission path, the step of detecting the disconnection of the transmission path, the step of detecting the work state by the monitoring unit, and the work when the disconnection of the transmission path is detected And a step of determining and executing processing contents corresponding to the state from the conversion table.

  According to the technology disclosed in the present application, it is possible to provide a communication system, a mounting machine, and a communication data processing method capable of performing appropriate processing when a communication path is disconnected.

The perspective view of the electronic component mounting apparatus with which the communication system of this embodiment is applied. The schematic plan view of the state which removed the upper cover of the electronic component mounting apparatus shown in FIG. The block diagram of an electronic component mounting apparatus. The flowchart which shows the processing content when a transmission line is cut | disconnected. The figure which shows the conversion table memorize | stored in the optical wireless apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. First, an electronic component mounting apparatus (hereinafter sometimes abbreviated as “mounting apparatus”) will be described as an example of an apparatus to which the communication system of the present application is applied. As shown in FIG. 1, the mounting device 10 includes a device main body 11, a pair of display devices 13 provided integrally with the device main body 11, and supply devices 15 and 16 provided detachably with respect to the device main body 11. Is provided. The mounting device 10 according to the present embodiment is an electronic component (not shown) with respect to the circuit board 100 transported by the transport device 21 housed in the device body 11 based on the control of the control device 80 shown in FIG. It is an apparatus which implements mounting work. In this embodiment, as shown in FIG. 1, the direction in which the circuit board 100 is transported by the transport device 21 (the left-right direction in FIG. 2) is the X-axis direction, and the horizontal direction in the transport direction of the circuit board 100 is the X-axis direction. A direction perpendicular to the direction is referred to as a Y-axis direction and will be described.

  The apparatus body 11 includes display devices 13 at both ends in the Y-axis direction on one end side in the X-axis direction. Each display device 13 is a touch panel display device, and displays information related to the mounting operation of the electronic component. Further, the apparatus main body 11 includes supply devices 15 and 16 that are mounted so as to be sandwiched from both sides in the Y-axis direction. The supply device 15 is a feeder-type supply device, and includes a plurality of tape feeders 15A that are housed in a state where various electronic components are taped and wound on a reel. The supply device 16 is a wafer-type supply device, and supplies dies from a die assembly formed by dicing a wafer in which a dicing sheet is attached.

  FIG. 2 is a schematic plan view showing the mounting device 10 from a viewpoint from above (upper side in FIG. 1) with the upper cover 11A (see FIG. 1) of the device body 11 removed. As shown in FIG. 2, the apparatus main body 11 includes the transport device 21, a mounting head 22 for mounting electronic components on the circuit board 100, and a moving device 23 for moving the mounting head 22. Prepare for the top.

  The wafer type supply device 16 is placed on a placement plate 24. The supply device 16 includes a die assembly holding device 17 that is disposed substantially at the center of the mounting plate 24 and holds the die assembly fixedly, and a die assembly from the die assembly held by the die assembly holding device 17. A pickup head 18 for picking up and a shuttle mechanism 19 for transporting a die picked up by the pickup head 18 to a supply position are provided.

  The pickup head 18 can be moved to an arbitrary position on the die assembly holding device 17. The shuttle mechanism 19 is fixed on the placement plate 24 on one side in the X-axis direction with respect to the die assembly holding device 17. The shuttle mechanism 19 includes a die transfer table 19A provided on the upper surface of the shuttle main body that is long in the Y-axis direction. The die transfer table 19A is slidable in the Y-axis direction. The die carrier 19A receives a die from the pickup head 18, conveys the received die to a supply position, and has a shuttle nozzle (not shown) for receiving the die. Depending on the type of die, there is a die (for example, a flip chip) that is attached to the dicing sheet upside down. For this reason, the shuttle mechanism 19 receives the die picked up by the pickup head 18 by the die carrier table 19A, conveys it to the supply position (the position indicated by the broken line in the figure), and reverses it up and down by the reversing unit. At this time, the shuttle mechanism 19 is in a working state in which the arm of the reversing unit rotates and projects the arm toward the mounting head 22 that has moved to receive the die (the direction toward the front in the direction perpendicular to the paper surface in FIG. 2). 5) (corresponding to “reverse unit rising position”).

  The transfer device 21 is provided in a substantially central portion of the base 20 in the Y-axis direction, and moves the pair of conveyor belts 31, the substrate holding device 32 held on the conveyor belt 31, and the substrate holding device 32. And an electromagnetic motor 33. The substrate holding device 32 holds the circuit board 100. The output shaft of the electromagnetic motor 33 is drivingly connected to the conveyor belt 31. The electromagnetic motor 33 is, for example, a servo motor that can accurately control the rotation angle. In the transport device 21, the circuit board 100 moves in the X-axis direction together with the substrate holding device 32 when the conveyor belt 31 rotates around based on the driving of the electromagnetic motor 33.

  The mounting head 22 has a suction nozzle 41 that sucks electronic components on the lower surface facing the circuit board 100. The suction nozzle 41 communicates with the negative pressure air and the positive pressure air passage via a positive / negative pressure supply device 42 (see FIG. 3), sucks and holds the electronic component with the negative pressure, and supplies a slight positive pressure. The held electronic component is removed. Moreover, the mounting head 22 has a nozzle lifting device 43 (see FIG. 3) that lifts and lowers the suction nozzle 41 and a nozzle rotation device 44 (see FIG. 3) that rotates the suction nozzle 41 about its axis. The vertical position of the electronic component to be held and the holding posture of the electronic component are changed. The nozzle lifting device 43 includes, for example, an electromagnetic motor 43A as a drive source. The mounting head 22 has a position detection sensor 45 (see FIG. 3) for detecting the position of the electronic component to be held in the vertical direction. Further, a mark camera 47 for photographing the circuit board 100 is fixed to the mounting head 22 in a state of facing downward. The suction nozzle 41 is detachable from the mounting head 22 and can be changed according to the size and shape of the electronic component.

  The mounting head 22 is moved to an arbitrary position on the base 20 by the moving device 23. More specifically, the moving device 23 includes an X-axis direction slide mechanism 50 for moving the mounting head 22 in the X-axis direction, and a Y-axis direction slide mechanism 52 for moving the mounting head 22 in the Y-axis direction. . The X-axis direction slide mechanism 50 has an X-axis slider 54 provided on the base 20 so as to be movable in the X-axis direction, and an electromagnetic motor 56 as a drive source. The X-axis slider 54 moves to an arbitrary position in the X-axis direction based on driving of the electromagnetic motor 56.

  The Y-axis direction slide mechanism 52 has a Y-axis slider 58 provided on the side surface of the X-axis slider 54 so as to be movable in the Y-axis direction, and an electromagnetic motor 60 as a drive source. The Y-axis slider 58 moves to an arbitrary position in the Y-axis direction based on driving of the electromagnetic motor 60. The mounting head 22 is attached to the Y-axis slider 58 and moves to an arbitrary position on the base 20 as the moving device 23 is driven. Thereby, the mark camera 47 can image the surface of an arbitrary position of the circuit board 100 by moving the mounting head 22. Image data photographed by the mark camera 47 is processed by the image processing device 71 (see FIG. 3) and output to the control device 80. The mounting head 22 is attached to the Y-axis slider 58 via the connector 48 and can be attached and detached with a single touch, and can be changed to a different type of work head, for example, a dispenser head.

  In addition, the base 20 has supply devices 15 and 16 connected to each side surface in the Y-axis direction. Each of the supply devices 15 and 16 can be attached to and detached from the base 20 in order to cope with a shortage of electronic components to be supplied, changes in the types of electronic components, and the like. Further, the base 20 is provided with a parts camera 73 at a substantially central portion in the X-axis direction at a portion to which the supply devices 15 and 16 are connected. Each part camera 73 is provided in a state of facing upward, and images the electronic components sucked and held by the suction nozzle 41 of the mounting head 22 from each of the supply devices 15 and 16. The parts camera 73 outputs the captured image data to the image processing device 71 (see FIG. 3). The image processing device 71 outputs the processed data to the control device 80.

  Here, as shown in FIG. 3, the mounting apparatus 10 of the present embodiment uses optical wireless multiplexed communication for data communication between the control apparatus 80 of the mounting apparatus 10 and a portion (each apparatus) other than the control apparatus 80. Is used. Note that the configuration of the mounting apparatus 10 illustrated in FIG. 3 is an example in the case of applying a communication system, and is appropriately changed according to the type and number of apparatuses provided in the mounting apparatus 10. In addition, data communication between the control device 80 and a portion (each device) other than the control device 80 may use multiplexed communication via a wire (for example, an optical fiber). The communication system of the present application is a system that can be applied to an automatic machine operating in various production lines in addition to the electronic component mounting apparatus exemplified by the mounting apparatus 10.

  As shown in FIG. 3, the control device 80 includes a controller 82 mainly composed of a computer having a CPU, ROM, RAM, and the like, an image board 84, a drive control board 85, and an I / O board 86. The controller 82 communicates with each device via each board 84, 85, 86. Each board 84, 85, 86 is connected to one end of a transmission path 95 via an optical wireless device 91, and optical wireless communication is performed on the transmission path 95. The other end of the transmission path 95 is connected to each device (camera, motor, sensor, etc.) via the optical wireless device 93. For example, as shown in FIG. 2, the moving device 23 is provided with a light emitting / receiving unit 92 </ b> B of the optical wireless device 93 facing the light emitting / receiving unit 92 </ b> A of the optical wireless device 91 connected to the control device 80. . The light emitting / receiving unit 92B is fixed to the X-axis slider 54 of the moving device 23 so that the optical axis coincides with the light emitting / receiving unit 92A on the optical wireless device 91 side. Thereby, various types of information communication can be performed between the light emitting / receiving units 92A and 92B (optical wireless devices 91 and 93).

  An image board 84 shown in FIG. 3 is a board that controls input / output of image data. For example, the controller 82 uses the image board 84 to hold information (type, shape, etc.) on the circuit board 100 detected by the image processing apparatus 71 from processing of the image data of the mark camera 47 and hold the circuit board 100 by the board holding device 32. Receive information such as position error. The drive control board 85 is a board that controls input / output of operation commands for the electromagnetic motor and information fed back from the electromagnetic motor in real time. For example, the controller 82 receives servo control information such as torque information and position information (vertical position of the electronic component held by the suction nozzle 41) acquired by the electromagnetic motor 43A via the drive control board 85. The I / O board 86 is a board that controls input / output of an output signal of the position detection sensor 45, for example. Data input from these devices to the control device 80 is multiplexed by the optical wireless device 93 and then transmitted through the transmission path 95 as an optical wireless signal. The optical wireless device 91 performs a process of demultiplexing the transmitted multiplexed signal and separating it into individual data. Of the separated data, the optical wireless device 91 transfers image data to the image board 84, servo control information to the drive control board 85, and I / O signals to the I / O board 86.

  On the other hand, the controller 82 processes each data received by the optical wireless device 91. For example, the controller 82 outputs a control signal for the electromagnetic motor 43 </ b> A based on the processing result to the optical wireless device 91 via the drive control board 85. The optical wireless device 93 transfers the control signal transmitted from the optical wireless device 91 to the nozzle lifting / lowering device 43. Thus, the electromagnetic motor 43A operates based on the control signal. For example, the controller 82 outputs a control signal for changing the display of the display device 13 to the display device 13 via the I / O board 86 and the optical wireless devices 91 and 93. As described above, various types of information transmitted and received between the control device 80 and each device other than the control device 80 are transmitted and received as data multiplexed on the transmission path 95, for example, time division multiplexing (TDM) frame data. .

  In the mounting device 10 described above, an electronic component is mounted on the circuit board 100 held by the substrate holding device 32 by the mounting head 22. Specifically, the controller 82 drives the transport device 21 to transport the circuit board 100 to the working position, stops the electromagnetic motor 33, and holds the circuit board 100 in a fixed manner. Next, the controller 82 drives the moving device 23 to move the mounting head 22 onto the circuit board 100 and images the circuit board 100 with the mark camera 47. At this time, the controller 82 determines the type of the circuit board received from the image processing apparatus 71 and the error in the holding position of the circuit board 100. Next, the controller 82 drives the supply devices 15 and 16 having electronic components according to the determination result for the type of board, and performs control to send the corresponding electronic components to the supply position to the mounting head 22. Next, the controller 82 drives the moving device 23 to suck and hold the electronic component conveyed at the supply position by the suction nozzle 41 of the mounting head 22.

  Next, the controller 82 moves the mounting head 22 holding the electronic component onto the parts camera 73 to image the state of the electronic component. At this time, the controller 82 acquires an error in the holding position of the electronic component based on the imaging result. Next, the controller 82 moves the mounting head 22 to the mounting position on the circuit board 100, rotates the suction nozzle 41 based on the holding position error of the circuit board and the electronic component, and then mounts the electronic component on the circuit board 100. . In multiplexed communication between the control device 80 and each device other than the control device 80, since different types of data are transmitted, different error correction processing or the like may be performed for each data type.

  Here, as described above, the controller 82 controls the electromagnetic motor 43A through the transmission path 95. For example, when a part of a human body enters the transmission path 95 by optical radio. A momentary interruption occurs in the transmission path 95. In this case, the mounting device 10 needs to put each of a plurality of movable parts (such as the mounting head 22 and the transport device 21), which can no longer be controlled, into a safe working state. It is not easy to determine a safe working state uniquely in advance. Therefore, in the mounting device 10 of the present embodiment, when the transmission path 95 is disconnected, an appropriate process is performed after determining the situation at that time.

  Specifically, as illustrated in FIG. 3, the optical wireless device 93 includes a detection unit 110, a monitoring unit 111, a RAM 113, and a ROM 115. In addition, the optical wireless device 91 includes a detection unit 120. The detection units 110 and 120 monitor whether or not the transmission path 95 is disconnected. The detection of the disconnection of the transmission path 95 is performed, for example, by periodically transmitting / receiving data for confirming communication between the detection unit 120 of the optical wireless device 91 and the detection unit 110 of the optical wireless device 93, and the data cannot be received. Detection can be performed based on conditions such as the state elapses for a predetermined time or the amount of received light of the optical wireless is equal to or less than a threshold value.

  The monitoring unit 111 is a circuit that detects a working state of each device (such as the mounting head 22) connected to the optical wireless device 93. For example, the monitoring unit 111 monitors the start or stop state of the electromagnetic motor 43 </ b> A by detecting the signal level (positive or negative voltage) of the control line connecting the optical wireless device 93 and the nozzle lifting / lowering device 43. The monitoring unit 111 temporarily stores the detection result in the RAM 113. Further, the RAM 113 stores a conversion table TB (see FIG. 5) for the monitoring unit 111 to determine the processing contents from the detection result when the transmission path 95 is disconnected. This conversion table TB is stored in, for example, the ROM of the control device 80, and is transmitted to the optical wireless device 93 by the controller 82 when the mounting device 10 (optical wireless devices 91 and 93) is activated. The ROM 115 stores a control program for controlling processing operations of the optical wireless device 93 and the monitoring unit 111.

  Next, the operation of the mounting apparatus 10 when the transmission path 95 is disconnected will be described with reference to FIG. First, in step (hereinafter, simply referred to as “S”) 10 in FIG. 4, the controller 82 transmits the conversion table TB to the optical wireless device 93 when the mounting device 10 is activated. The optical wireless device 93 temporarily stores the received conversion table TB in the RAM 113.

  Next, the detectors 110 and 120 of the optical wireless devices 91 and 93 monitor whether or not the transmission path 95 is disconnected during the mounting operation of the electronic component on the circuit board 100 (S11). The detection units 110 and 120 continue to monitor the transmission path 95 while detecting no disconnection (S11: NO). When detecting the disconnection of the transmission path 95 (S11: YES), the detection unit 120 of the optical wireless device 91 notifies the controller 82 that the disconnection has been detected. When the controller 82 receives the notification from the detection unit 120, the controller 82 performs a process of saving the currently processed state (S13). For example, the controller 82 stores the state of setting data (recipe) used for control. Here, the recipe is control data for instructing work contents such as “to which mounting component of the circuit board 100 to be transported is to be mounted with an electronic component supplied from which supply device”. Thereby, the controller 82 can be restarted based on the recipe information in which the processing state is stored after the transmission path 95 is restored.

  On the other hand, when detecting the disconnection of the transmission path 95, the detection unit 110 of the optical wireless device 93 notifies the monitoring unit 111 that the disconnection has been detected. Upon receiving the notification from the detection unit 110, the monitoring unit 111 detects the working state of each device (such as the electromagnetic motor 43A of the mounting head 22) connected to the optical wireless device 93, and temporarily stores the detection result in the RAM 113. (S15). Next, the monitoring unit 111 determines how to control each device based on the conversion table TB stored in the RAM 113 (S17).

  FIG. 5 shows an example of the conversion table TB. The display indicated by “◯” in the conversion table TB indicates whether or not the operation in the leftmost column is detected. “Process 1” of the conversion table TB is a process when it is detected that the position detection sensor 45 is ON when the transmission path 95 is disconnected. For example, a process of continuing the ON operation of the position detection sensor 45 Become. Further, “Process 2” of the conversion table TB is a process in the case where it is detected that the electromagnetic motor 43A of the nozzle lifting device 43 is driven and the nozzle is descending when the transmission path 95 is cut. This is a process of stopping the operation of the electromagnetic motor 43A.

  Further, “Process 3” of the conversion table TB indicates that the position detection sensor 45 is turned ON when the transmission path 95 is cut and the nozzle is moving downward, and the reversing unit of the supply device 16 (see FIG. 2) This is processing when it is detected that the vehicle is in the raised position. The shuttle mechanism 19 of the supply device 16 receives the die picked up by the pickup head 18 at the die transfer table 19A, conveys it to the supply position, and reverses it upside down by the reversing unit. At this time, the shuttle mechanism 19 is in a working state in which the arm of the reversing unit protrudes toward the mounting head 22. In this case, the processing at the time of cutting the transmission path 95 is uniquely set as processing contents such as stopping the nozzle of the nozzle lifting device 43 at the lowered position and moving the arm of the reversing unit to the lowered position. If this is done, the suction nozzle and the arm may collide. For this reason, the monitoring unit 111 determines, as “Process 3”, for example, when the suction nozzle of the nozzle lifting device 43 interferes with the arm of the reversing unit from the detection position of the position detection sensor 45. Is moved, and the arm of the reversing unit is moved to the lowered position. As described above, the monitoring unit 111 can determine appropriate processing contents from the conversion table TB based on the working state of each device detected when the transmission path 95 is disconnected. In addition, the monitoring unit 111 performs processing for saving the working state of each device after execution of the determined processing (processing 1 to 3 or the like) in the RAM 113 or the like.

  During the execution of the above-described processing, the detection units 110 and 120 of the optical wireless devices 91 and 93 monitor whether or not the transmission path 95 is restored. The detection units 110 and 120 continue to monitor the transmission path 95 while detecting no recovery (S19: NO). When detecting the recovery of the transmission path 95 (S19: YES), the detection unit 120 of the optical wireless apparatus 91 notifies the controller 82 that the recovery has been detected.

  When the controller 82 receives the notification from the detection unit 120, the controller 82 performs a process of acquiring the working state of each device from the monitoring unit 111 through the transmission path 95 (S21). The monitoring unit 111 transmits to the controller 82 the current working state of each device after the processing (such as processing 1 to 3) executed in S17 and the detection result stored in the RAM 113 in S15. Then, the controller 82 determines which work is to be resumed based on the information acquired from the monitoring unit 111 and the recipe information stored in S13 (S23). For example, the controller 82 performs processing of discarding electronic components held by the suction nozzle of the nozzle lifting device 43 and restarting from the beginning of a series of mounting operations performed when the transmission path 95 is cut.

As mentioned above, according to this embodiment mentioned above, there exist the following effects.
<Effect 1> The mounting device 10 uses multiplexed communication by the optical wireless devices 91 and 93 for data communication between the control device 80 and each device other than the control device 80 (such as the mounting head 22). The detection units 110 and 120 of the optical wireless devices 91 and 93 monitor whether or not the transmission path 95 is disconnected during the mounting operation of the electronic component on the circuit board 100 (S11 in FIG. 4). When detecting the disconnection of the transmission path 95, the detection unit 110 of the optical wireless device 93 notifies the monitoring unit 111 that the disconnection has been detected. Upon receiving the notification from the detection unit 110, the monitoring unit 111 detects the working state of each device (such as the mounting head 22) connected to the optical wireless device 93, and temporarily stores the detection result in the RAM 113 (S15). . In the RAM 113 provided in the optical wireless device 93, a conversion table TB (see FIG. 5) for determining the processing contents from the detection result of the monitoring unit 111 is stored in advance (S10). Then, the monitoring unit 111 determines how to control each device based on the conversion table TB (S17). In such a configuration, when the transmission path 95 is cut, an appropriate process is performed after determining the situation of a plurality of movable parts (such as the mounting head 22 and the supply device 16) operating simultaneously. Is possible.

  <Effect 2> Upon detecting the disconnection of the transmission path 95, the detection unit 120 of the optical wireless apparatus 91 notifies the controller 82 that the disconnection has been detected. When the controller 82 receives the notification from the detection unit 120, the controller 82 performs a process of saving the currently processed state (such as a recipe) (S13). Thereby, the controller 82 can be restarted based on the recipe information in which the processing state is stored after the transmission path 95 is restored.

  <Effect 3> When detecting the recovery of the transmission path 95, the detection unit 120 of the optical wireless apparatus 91 notifies the controller 82 that the recovery has been detected. When the controller 82 receives the notification from the detection unit 120, the controller 82 performs a process of acquiring the working state of each device from the monitoring unit 111 through the transmission path 95 (S21). The monitoring unit 111 transmits the detection result stored in the RAM 113 in S15 to the controller 82. Then, the controller 82 determines which work is to be resumed based on the information acquired from the monitoring unit 111 and the recipe information stored in S13 (S23). As a result, the controller 82 can restart the process at an appropriate timing, and the time during which the mounting operation is interrupted can be shortened.

In addition, this invention is not limited to the said embodiment, It is possible to implement in the various aspect which gave various change and improvement based on the knowledge of those skilled in the art.
For example, in the present embodiment, the multiplex communication using optical wireless has been described as an example. However, the present application is not limited to this, and the same applies to communication via a wire (for example, an optical fiber or a LAN cable). Applicable.

The optical wireless device 91 may store the processing state of the controller 82 when the transmission path 95 is disconnected.
In addition, the detection unit 110, the monitoring unit 111, the RAM 113, the ROM 115, and the like may be provided as devices different from the optical wireless device 93.
In the above embodiment, the conversion table TB is stored in advance in the ROM or the like of the control device 80 and transmitted to the optical wireless device 93 via the transmission path 95. However, the present invention is not limited to this. The configuration may be such that the data is stored in advance in the ROM 115 of the wireless device 93. Thereby, the transmission process of the conversion table TB at the time of starting becomes unnecessary.

Further, the mounting device 10 may be configured to display the content of the abnormality on the display device 13 or the like when the detection units 110 and 120 of the optical wireless devices 91 and 93 detect the abnormality such as the disconnection of the transmission path 95.
Further, the optical wireless devices 91 and 93 may be three or more.
Moreover, although the electronic component mounting apparatus 10 which mounts an electronic component on a circuit board was demonstrated in the said embodiment, this application is not limited to this, It applies to the mounting machine etc. which operate | move in other various manufacturing lines. be able to. For example, you may apply to the mounting machine which implements assembly operations, such as a secondary battery (a solar cell, a fuel cell, etc.). The mounting machine includes a screen printing apparatus that moves the squeegee along the mask and prints the printing material on the printing target member. Further, the mounting machine is not limited to mounting or assembling, but includes, for example, a machine tool that performs cutting or the like.

The correspondence with the terms in the claims is as follows.
The electronic component mounting apparatus 10 is an example of a mounting machine. The supply device 15, the supply device 16, the transport device 21, the moving device 23, the mounting head 22, etc. are examples of movable parts. The controller 82 is an example of a control unit. The optical wireless devices 91 and 93 are an example of a communication unit. The circuit board 100 is an example of a workpiece. The detection unit 110 is an example of a detection unit. The monitoring unit 111 is an example of a monitoring unit.

  DESCRIPTION OF SYMBOLS 10 Electronic component mounting apparatus, 22 mounting head, 82 controller, 91,93 Optical wireless apparatus, 110,120 detection part, 111 monitoring part.

Claims (5)

A movable part that performs work on the workpiece;
A control unit for controlling the operation of the movable unit;
A communication unit that transmits control information transmitted and received between the movable unit and the control unit through a transmission path;
A detector for detecting disconnection of the transmission path;
A monitoring unit for detecting a working state of the movable unit;
With
The monitoring unit transmits in advance a conversion table in which the work state and processing content corresponding to the work state are associated from the control unit via the transmission line, and the detection unit detects disconnection of the transmission line. In accordance with the above, the processing content corresponding to the work state at the time of detection is determined from the conversion table and executed.   2. The communication system according to claim 1, wherein the control unit stores a processing state executed for the movable unit in response to the detection unit detecting the disconnection of the transmission path. 3. . The detection unit is configured to detect recovery of disconnection of the transmission path,
The control unit acquires the current working state of the movable unit from the monitoring unit in response to the detection unit detecting restoration of the disconnection of the transmission path, and the acquired working state and the cutting time The communication system according to claim 2, wherein the control content for the movable part is determined in accordance with the processing state stored in the control unit, and the operation is resumed. A communication system according to any one of claims 1 to 3,
A mounting machine that performs mounting work for mounting electronic components on the circuit board as the work by the movable portion, and transmits the control information related to the mounting work by the communication system. A movable part that performs work on the workpiece, a control part that controls the operation of the movable part, a communication part that transmits control information transmitted and received between the movable part and the control part via a transmission path, and the movable part A communication data processing method for a communication system comprising a monitoring unit for monitoring the work state of
A step of transmitting in advance a conversion table in which the work state and processing content corresponding to the work state are associated from the control unit to the monitoring unit via the transmission path;
Detecting disconnection of the transmission path;
The monitoring unit detecting a working state;
A communication data processing method comprising: determining from the conversion table and executing the processing content corresponding to the work state when the disconnection of the transmission path is detected.

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