WO2014049711A1 - Communications system, electronic component attachment device and error processing method for communications system - Google Patents

Abstract

Provided is a communications system capable of suitably processing errors in accordance with data type and regardless of the connection terminal to which an electrical device is connected, for a communications system in which a plurality of electrical devices are connected that input and output data having different suitable error processing. A transmission-side control unit (125) obtains information relating to the type of data output by a nozzle elevating device (43) from a memory housed in each connector (22A-22C) connected to connectors (93A-93C) in an optical wireless device (93), and connects code allocation circuits (123A-123C) corresponding to that type to a connector (93A-93C). On the reception side, error detection/correction is performed on received data, using correction circuits (133A-133C). In a similar manner to the transmission side, a control unit (135) on the reception side connects the correction circuits (133A-133C) to the connectors (91A-91C) on the basis of information obtained from a memory housed in the connectors (80A-80C) connected to a control device (80).

Description

Communication system, electronic component mounting apparatus, and error processing method of communication system

The present invention relates to a communication system that performs data communication with different types of error processing according to the type of data, an electronic component mounting apparatus that uses the communication system, and an error processing method of the communication system.

Conventionally, technologies related to communication systems have been disclosed. For example, a center device that provides a communication service automatically confirms the configuration of a plurality of user devices that use the service and changes settings for the user devices (for example, Patent Document 1).

In the technique exemplified in Patent Document 1, the user apparatus has a plurality of connectors to which interface cards (IF cards) are attached, and periodically checks the attachment status of the IF cards in the connectors to obtain detection results. Transmit to the center device. The center device determines a change in configuration in each user device based on the detection result transmitted from each user device, and changes the destination identifier set in the IF card according to the result.

In addition, in the optical fiber network used in the communication system of Patent Document 1, a time division multiplexing (TDM) method is used for downlink communication from the center apparatus to the user apparatus, and the transmission within the frame to be transmitted. Is set with an error correction code for detecting an error in the data.

JP-A-11-205311 (paragraphs 0008, 0087 to 0100, FIGS. 6 and 10)

Incidentally, in a configuration for performing data communication between a plurality of devices using the communication system as described above, a suitable error processing (correction rule or the like) may differ depending on the type of data to be transmitted. For example, in the communication system exemplified in Patent Document 1, the type of data input from each connector of the user device differs depending on the electrical device connected via the IF card, and is different for each electrical device (data type). There is a need to adapt error handling.

However, Patent Document 1 describes that the destination identifier is changed according to the installation status of the IF card on the user device side, but the error processing is changed according to the type of data input from each connector. There is no mention of what to do. Therefore, suitable error processing cannot be performed according to the data type of each electrical equipment connected to the communication system.
Furthermore, in order to maintain the versatility that various devices can be attached and detached using the above-described connector as a common interface to the communication system, input / output is performed to each device regardless of which connector the electrical device is connected to. It is desirable that suitable error processing is applied to the data.

The present invention has been made in view of the above-described problems, and relates to a connection terminal to which an electrical device is connected with respect to a communication system in which a plurality of electrical devices that input and output data having different preferred error processing are connected. It is an object of the present invention to provide a communication system capable of performing suitable error processing according to the type of data, an electronic component mounting apparatus using the communication system, and an error processing method of the communication system.

The communication system according to claim 1 of the present application, which has been made in view of the above problems, performs data communication with different types of error processing depending on the type of data. The electrical equipment includes an information storage unit that stores information related to the type of data to be communicated. The data communication unit includes a connection terminal to which the electrical device is connected. In addition, the data communication unit obtains information related to the type of data from the information storage unit provided in the electrical apparatus on the transmission side, and sets error information according to the data based on the information. A transmission-side control unit that assigns setting means to a connection terminal to which the electrical device is connected is provided. In addition, the data communication unit acquires information related to the type of data from the information storage unit provided in the electrical apparatus on the receiving side, and based on the information, error detection processing according to the data, or error detection / correction A receiving-side control unit that assigns error checking means for performing processing to a connection terminal to which the electrical device is connected is provided.

The communication system according to claim 2 is the communication system according to claim 1, wherein the transmission side control unit includes a plurality of error processing setting means for each type of data, and the transmission side electrical equipment is connected. Based on the information related to the type of data acquired from the information storage unit of the electrical equipment, the transmission side selection means for connecting to any of a plurality of error processing setting means, the reception side control unit, A plurality of error checking means are provided for each type of data, and a plurality of error checking is performed based on the information related to the type of data acquired from the information storage unit of the electrical equipment for the connection terminal to which the receiving side electrical equipment is connected Receiving-side selecting means connected to any of the means;

The communication system according to claim 3 is the communication system according to claim 1, wherein the transmission side control unit and the reception side control unit are based on configuration data according to information related to the type of acquired data. And a programmable logic device in which error processing setting means and error checking means are configured.

According to a fourth aspect of the present invention, in the communication system according to the third aspect, the data communication unit includes a storage unit in which configuration data is stored, and is acquired from an information storage unit provided in the electrical device. Corresponding configuration data is selected from the storage unit based on information relating to the type of data to be stored.

Further, the communication system according to claim 5 is the communication system according to claim 3, wherein the information relating to the type of data includes configuration data.

Further, the communication system according to claim 6 is the communication system according to claim 4, wherein at least one of the transmission side control unit and the reception side control unit corresponds to information related to the type of error processing of the acquired data. When configuration data is not stored in the storage unit, an error is output.

The communication system according to claim 7 is the communication system according to any one of claims 1 to 6, wherein a data transfer rate is determined for each type of data, and the transmission side control unit and the reception side control unit Performs error output when the sum of the data transfer rates corresponding to the information relating to the acquired data type exceeds the maximum communication rate.
Here, the data transfer rate is a data transfer rate defined by a communication protocol with which the communication system conforms. Amount of data transferred per unit time specified according to the communication protocol, such as the communication speed of the signal determined according to the communication bandwidth and communication method specified by the communication protocol, and the ratio of actual data to one unit of communication It is.

Further, the communication system according to claim 8 is the communication system according to any one of claims 1 to 7, wherein the information storage unit includes at least one of a memory, a dip switch, a rotary switch, and a jumper pin.

The communication system according to claim 9 is the communication system according to any one of claims 1 to 8, wherein the data communication unit includes an abnormality detection unit that detects an abnormality in data communication, and the transmission side control unit At least one of the reception-side control unit outputs a control signal to the electrical device based on the detection signal of the abnormality detection unit.

The electronic component mounting apparatus according to claim 10 of the present application is an electronic component mounting that transmits various types of data with different types of error processing by communication according to the type of data related to the mounting operation of the electronic component on the substrate. The apparatus includes an electrical device including an information storage unit that stores information on a type of data to be communicated, and a data communication unit including a connection terminal to which the electrical device is connected. An error processing setting means for acquiring information relating to the type of data from an information storage unit provided in the electrical equipment on the side, and setting additional information relating to error processing according to the data based on the information, the electrical equipment Information related to the type of data is acquired from the transmission side control unit assigned to the connection terminal to be connected and the information storage unit provided in the electrical apparatus on the reception side, and an error is detected based on the data based on the information Error checking means for performing detection and correction processing of physical or error, and a reception-side control unit that assigns to the connection terminal electrical instrumentation device is connected.

An error processing method for a communication system according to claim 11 of the present application is an error processing method for a communication system that performs communication of data having different types of error processing according to the type of data. Accordingly, in the step of monitoring the connection of the electrical device to the connection terminal of the data communication unit that performs data transmission and reception, and in the step of monitoring, when the connection of a new electrical device is detected, the data communication unit transmits and receives data A step of stopping, a step of acquiring information relating to a type of data input / output by the electrical device from a newly connected electrical device, and a type of data input / output by the electrical device based on the acquired information Assigning the processing means for performing the error handling to the connection terminal to which the electrical equipment is connected.

In the communication system according to claim 1, on the transmission side, the transmission side control unit of the data communication unit acquires information on the type of data from the information storage unit provided in the electrical device on the transmission side, and based on the information Then, error processing setting means for setting additional information related to error processing according to data is assigned to a connection terminal to which the electrical equipment is connected. On the other hand, on the receiving side, the receiving side control unit of the data communication unit acquires information related to the type of data from the information storage unit provided in the receiving side electrical equipment, and detects an error according to the data based on the information Error checking means for performing processing or error detection / correction processing is assigned to a connection terminal to which the electrical equipment is connected.

In such a configuration, error processing setting means and error checking means for performing error processing suitable for data input / output to / from the connection terminals connected to the electrical equipment by the control units on the transmission side and the reception side Can be assigned. Therefore, it is possible to configure a communication system to which suitable error processing according to the type of data is applied regardless of the connection terminal to be connected when the electrical device is connected to the data communication unit.

In the communication system according to claim 2, the transmission-side control unit determines the plurality of error processing setting means provided for each data type based on the information related to the data type acquired from the information storage unit of the electrical device. And a transmission-side selection means for selectively connecting to a connection terminal to which the transmission-side electrical device is connected. The receiving-side control unit has a plurality of error checking means provided for each data type, based on information relating to the type of data acquired from the information storage unit of the electrical device, a connection terminal to which the receiving-side electrical device is connected Receiving-side selecting means for selectively connecting to the receiver. Thereby, each control unit controls the transmission side selection unit and the reception side selection unit based on the information acquired from the information storage unit, thereby making it easy to perform error processing setting unit and error confirmation unit suitable for the electrical equipment. A communication system that can be connected to can be configured.

In the communication system according to claim 3, the error processing setting unit and the error confirmation unit are configured based on configuration data corresponding to information related to the type of data acquired using the programmable logic device. Thereby, the configuration of the error processing setting means and the error checking means can be changed according to the type of data input / output from the connection terminal, and a communication system capable of flexibly changing the type of error processing in the data communication unit can be configured.

In the communication system according to claim 4, the data communication unit selects configuration data corresponding to the type of data from the storage unit. Thus, even if each information storage unit of the electrical equipment is not provided with configuration data corresponding to the type of data, an error processing setting unit and an error confirmation unit corresponding to the type of data can be configured on the data communication unit side, and the information storage unit In other words, the configuration of the electrical equipment can be simplified.

In the communication system according to claim 5, the configuration data is included in the information related to the type of data acquired from the information storage unit, and the configuration data according to the type of data input / output by each electrical device Is provided. As a result, it is possible to prevent a situation in which, for example, the configuration data corresponding to the type of data does not exist in the data communication unit due to a configuration change, and the error processing setting unit and the error checking unit cannot be configured appropriately.

Further, in the communication system according to the sixth aspect, when necessary configuration data is not stored in the storage unit, an error can be output to notify the user and prompt the user to take action.

In addition, in the communication system according to claim 7, when each control unit sums up the data transfer rates determined for each data type exceeds the maximum communication rate, an error is output to indicate that. The user can be alerted to take action.

In the communication system according to claim 8, the information storage unit can be easily configured using at least one of a memory, a dip switch, a rotary switch, and a jumper pin.

In the communication system according to claim 9, at least one of the transmission side control unit and the reception side control unit controls the electrical device based on the detection signal of the abnormality detection unit that detects a communication abnormality. Thereby, for example, the transmission-side control unit can prompt the user to perform a response by executing control for notifying the transmission-side electrical device of the communication abnormality based on the detection signal of the abnormality detection unit. Become. In addition, for example, the reception-side control unit can execute a process such as fail-safe for safely stopping the electrical device on the reception side.

Further, in the electronic component mounting apparatus according to claim 10, for each electronic component mounting apparatus that requires particularly suitable error processing according to the type of data to be communicated between the respective electrical component apparatuses, An electronic component mounting apparatus to which suitable error processing according to the type of data is applied can be configured regardless of the connection terminal to be connected when connecting to the data communication unit.

In the communication system error processing method according to claim 11, when the communication system is operated, the connection of the electrical equipment to the connection terminal of the data communication unit is monitored, and a connection of a new electrical equipment is detected. Stop transmission / reception of the data communication unit. Then, the electrical equipment is connected to processing means for acquiring information related to the type of data input / output by the electrical equipment from the information storage unit of the electrical equipment and performing error processing according to the data type based on the acquired information. Assign to the connection terminal. As a result, when an electrical device is connected to the data communication unit during operation of the communication system, processing means for stopping transmission / reception of the data communication unit and performing suitable error processing on the newly connected electrical device is automatically performed. Connected to. Therefore, for example, when a failure occurs in any electrical device during system operation, it is possible to restore the system by replacing the failed electrical device without stopping the entire communication system.

It is a perspective view of the electronic component mounting apparatus with which the communication system of this embodiment is applied. It is a schematic plan view of the state which removed the upper cover of the electronic component mounting apparatus shown in FIG. It is a block diagram of an electronic component mounting apparatus. It is a figure which shows the breakdown for every data kind by which multiplex communication is carried out. It is a schematic block diagram of a multiplexing communication system. It is a schematic block diagram of the optical wireless apparatus 93 by the side of transmission. It is a figure for demonstrating the information preserve | saved at the memory with which a connector is provided. It is a flowchart for demonstrating the process of the control part when a new connector connection arises during system operation. It is a figure which shows an error display when the sum total of a data transfer rate exceeds the maximum communication rate. 2 is a schematic configuration diagram of another optical wireless device 300. FIG.

Hereinafter, embodiments of the present invention will be described 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.

(Configuration of mounting device 10)
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 of the circuit board 100 is X-axis direction. A direction perpendicular to the direction is referred to as a Y-axis direction and will be described.

The device 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 tray-type supply device, and has a plurality of component trays 16A (see FIG. 2) on which a plurality of electronic components are placed.

FIG. 2 is a schematic plan view showing the mounting apparatus 10 from the upper (upper side in FIG. 1) viewpoint with the upper cover 11A (see FIG. 1) of the apparatus main 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 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. The mounting head 22 includes a nozzle lifting device (see FIG. 3) 43 that lifts and lowers the suction nozzle 41 and a nozzle rotation device (see FIG. 3) 44 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.

Further, 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.

Further, 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.

(Communication system applied to mounting device 10 (multiplexed communication system))
Here, as shown in FIG. 3, the mounting apparatus 10 according to the present embodiment uses optical wireless multiplexed communication for data communication between the control apparatus 80 of the mounting apparatus 10 and parts (various apparatuses) 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. 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 various devices (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. As a result, various types of information communication can be performed between the light emitting / receiving units 92A and 92B (optical wireless devices 91 and 93).

The 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. . Note that only part of the communication between the control device 80 and another device may be performed by optical wireless communication.

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 and rotates the suction nozzle 41 based on the holding position error between the circuit board and the electronic component, and then mounts the electronic component on the circuit board 100. .

In the following description, a communication system (multiplexed communication system) suitable for application to the mounting apparatus 10 that mounts electronic components using the above-described multiplexed communication will be described.
(Data types and error correction rules)
First, in the multiplexed communication between the control device 80 and each device other than the control device 80, different types of data are transmitted. In such multiplexed communication, it is necessary to adapt error correction rules for each data type. Specifically, FIG. 4 illustrates an example of each data type in the mounting apparatus 10 described above and an error correction rule applied to the data type. The data type (A) shown in FIG. 4 is data classified as a high-speed signal, and is image data transmitted and received by the image board 84. The data type (B) is data classified as a medium speed signal, and is an operation command or servo control information transmitted / received by the drive control board 85. The data type (C) is data classified as a low-speed signal, and is an I / O signal transmitted / received by the I / O board 86.

The image data classified as (A) has a relatively large amount of data constituting one frame. Since the amount of data per frame is large, it is not realistic to retransmit data for bit errors. For this reason, it is common to perform error correction at the reception destination instead of retransmission. The error processing of the data type classified as (A) is performed, for example, by adding a forward error correction code (FEC) of a Hamming code to image data. In this type of data transmission, for example, a data transfer rate of 1 Gbps or more is required as a field network standard in the FA field. In addition, since there is some time until the display of one frame is updated, about 1 ms is secured as the data processing time including error correction processing.

In the operation command and servo control information classified as (B), the motor drive control needs to be performed with respect to the electromagnetic motor 33 in accordance with the feedback of the servo control information from the electromagnetic motor 33, for example. Response may be required. On the other hand, the amount of data required for the operation command and servo control information is smaller than that of the image data (A) described above. For this reason, the error processing of the data type classified as (B) may require control certainty, and for example, processing based on majority logic is performed. In the process based on majority logic, for example, the same operation command with a parity code added is transmitted three times. Match / mismatch is detected by parity check among the three commands, and if they match, a heavy coefficient is added and the score for each data value is totaled. As a result, the data value that obtains the highest score is set as the final value. Thus, the data value can be transmitted while ensuring certainty by a plurality of times of data transmission and majority logic. Further, error processing is simple and high-speed processing can be performed. For example, a data transfer rate of 125 Mbps is generally used as a field network standard in the FA field. In addition, the data processing time per command is required to be high speed of about 1 μs, for example, due to restrictions such as communication protocol specifications.

The I / O signals classified as (C) are classified into, for example, input signals of various switches of the mounting apparatus 10 and control signals for turning on the display lamps in addition to the detection signals of the position detection sensor 45 described above. These signals are not required to have high speed. For example, a data transfer rate of several Kbps and a data processing time of about 1 ms are sufficient. The processing of the error of the data type classified as (C) is performed by a plurality of transmissions, for example, with a parity code added. In the continuous transmission, the transmitted data is acquired by confirming that all the data has the same data value. If there is a case where the data value is different even once in continuous transmission, the data transmission is cancelled. The present invention is applied to a signal that can maintain the original state even when the signal transmission is a low-speed signal transmission and the data transmission is canceled. Note that the above-described classification of data types and the error detection method corresponding thereto are merely examples, and it is preferable to appropriately change according to the contents of data.

(Common interface)
As described above, in the multiplex communication applied to the mounting apparatus 10, it is necessary to adapt the error detection method according to the characteristics of the data type. On the other hand, the mounting device 10 is configured as a module in which each device is replaceable with respect to the mounting device 10 (device main body 11). For example, the mounting head 22 is changed to a different type of work head (dispenser head or the like). Alternatively, in the configuration in which the mounting device 10 includes a plurality of moving devices 23 and conveying devices 21, the number of moving devices 23 and conveying devices 21 is changed according to the manufacturing efficiency required in the production line. That is, in addition to the above-described configuration change, in a device having a replaceable module such as the mounting device 10, the user may change each module so that a desired device configuration is obtained. In order to allow the user to freely change the module, ideally, it is desirable that all the modules or each input / output terminal of the module be configured with a common interface. However, as described above, in the multiplexed communication applied to the mounting apparatus 10, it is required to adapt the error detection method according to the data type. Therefore, such a mounting apparatus 10 is desired to have a configuration in which appropriate error correction is performed on data transmitted by multiplexed communication regardless of the connector to which each module is connected.

Therefore, the present inventors have repeatedly studied to achieve both the above-described “error processing according to data type” and “general versatility having a common interface” in a communication system applicable to the mounting apparatus 10. As a result, the present invention has been made. An embodiment of a communication system applied to the mounting apparatus 10 will be described below.

The multiplex communication system 110 shown in FIG. 5 is a communication system that connects the mounting head 22 and the control device 80. In order to make the description easy to understand, the mounting head 22 is described as a transmission side and the control device 80 is described as a reception side. To do. In the mounting head 22, a connector 22 </ b> A that is electrically connected to the electromagnetic motor 43 </ b> A of the nozzle lifting / lowering device 43 is connected to a connector 93 </ b> A of the optical wireless device 93. In the mounting head 22, the connector 22 </ b> B connected to the position detection sensor 45 is connected to the connector 93 </ b> B of the optical wireless device 93. In the mounting head 22, the connector 22 </ b> C connected to the mark camera 47 is connected to the connector 93 </ b> C of the optical wireless device 93. On the other hand, in the control device 80 on the receiving side, the connector 80A electrically connected to the image board 84 is the connector 91A of the optical wireless device 91, and the connector 80B connected to the drive control board 85 is the connector 91B of the optical wireless device 91. The connectors 80C connected to the I / O board 86 are connected to the connectors 91C of the optical wireless device 91, respectively. The connection between the mounting head 22 and each of the connectors 22A to 22C and the connection between the control device 80 and each of the connectors 80A to 80C may be connected via cables.

The optical wireless device 93 on the transmission side includes the connectors 93A to 93C, the selector 121, the code assigning circuits 123A to 123C, the control unit 125, and the multiplexing device 127. The selector 121 is connected between the connectors 93A to 93C and the sign assignment circuits 123A to 123C. The code assigning circuits 123A to 123C perform a setting process for adding error correction information corresponding to each data type described above. The control unit 125 controls the selector 121 to switch the connection between the connectors 93A to 93C and the code providing circuits 123A to 123C. The multiplexing device 127 multiplexes the output signals of the code assigning circuits 123 A to 123 C and transmits the multiplexed signals to the multiplexing device 137 of the receiving optical wireless device 91 via the transmission path 95.

The optical wireless device 91 on the receiving side includes a multiplexing device 137, connectors 91A to 91C, a selector 131, correction circuits 133A to 133C, and a control unit 135. The multiplexing device 137 demultiplexes the signal transmitted from the multiplexing device 127, separates it into individual data, and outputs the data to the correction circuits 133A to 133C. The selector 131 is connected between the correction circuits 133A to 133C and the connectors 91A to 91C. The control unit 135 controls the selector 131 to control the connection between the correction circuits 133A to 133C and the connectors 91A to 91C.

The code assigning circuits 123A to 123C correspond to the correction circuits 133A to 133C in this order. For example, the code addition circuit 123A and the correction circuit 133A are circuits that perform error correction / detection processing on image data. The code adding circuit 123A performs a process of adding an error correction code (a Hamming code corresponding to the data type (A) in FIG. 4) to input data. The correction circuit 133A executes processing for detecting and correcting whether there is an error in the image data based on the code data provided by the code addition circuit 123A for the input data.

In the above description, the optical wireless device 93 is described as the transmitting side, but the same control as described above is performed for data transmission using the optical wireless device 93 as the receiving side. More specifically, the optical wireless device 91 includes code adding circuits 134A to 134C connected to the selector 131 and the multiplexing device 137, similarly to the optical wireless device 93. The optical wireless device 93 includes correction circuits 124A to 124C connected to the selector 121 and the multiplexer 127 corresponding to the code adding circuits 134A to 134C of the optical wireless device 91. Then, in the optical wireless device 91 on the transmission side, the code adding circuits 134A to 134C execute setting processing for adding error correction information corresponding to each data type, and the correction circuits 124A to 124C of the optical wireless device 93 on the reception side. Error correction / detection processing is executed in step. In this way, data transmission is performed with the optical wireless device 91 as the transmission side and the optical wireless device 93 as the reception side.

Next, a control method in which the control unit 125 performs switching control of each selector 121 will be described. In the following description, the connector 22A of the mounting head 22 (the connector 93A of the optical wireless device 93) will be mainly described as the transmission side. First, as shown in FIG. 6, the optical wireless device 93 includes a logic device that can be programmed by the selector 121, the code assigning circuits 123 </ b> A to 123 </ b> C, and the multiplexing device 127, for example, an FPGA (Field Programmable Gate Array) 140. . The control unit 125 of the optical wireless device 93 includes a ROM 141, a CPLD (Complex Programmable Logic Device) 143, a CPU 144, and a DRAM 146. The ROM 141 is a rewritable non-volatile memory such as a flash memory, for example, and stores programs for the FPGA 140 to configure the selector 121, the code assignment circuits 123A to 123C, and the multiplexing device 127. The DRAM 146 is a volatile memory, and an area corresponding to each of the connectors 93A to 93C is secured. The optical wireless device 93 includes an external terminal 129 as shown in FIG. 5, and a program stored in the ROM 141 based on data input from the external terminal 129, for example, circuit information of the code providing circuits 123A to 123C. Is updated. The external terminal 129 is, for example, a USB (Universal Serial Bus) type terminal.

As shown in FIG. 6, the connector 22A includes a memory 151A and a physical layer (PHY) chip 153A. In the memory 151A, information (data type (B) in FIG. 4) regarding the data type of the device to which the connector 22A is connected (in this case, the electromagnetic motor 43A) is stored. The PHY chip 153A performs digitization processing of an analog voltage input from the electromagnetic motor 43A to the connector 22A. Since the other connectors 22B and 22C of the mounting head 22 have the same configuration as the connector 22A, the description thereof is omitted. Further, the connectors 22A to 22C may be configured such that the PHY chips 153A to 153C are omitted.

FIG. 7 shows an example of data (setting information) stored in the memory 151A. In the memory 151A, for example, data type, error correction type, information on a sign assignment circuit, required communication speed (data communication rate) information, connector module name, serial number, and the like are stored. In the example shown in FIG. 7, data input from the connector 22A is classified into servo control (feedback) information, a parity check process is performed as an error correction method, and a data transfer rate of 125 Mbps is required. "Connector for use" is set, and the production number at the time of production is "012345..."

Next, the control operation of the control unit 125 will be described. The optical wireless device 93 illustrated in FIG. 6 is activated when the mounting device 10 is powered on, and each circuit of the control unit 125 is activated. Further, the control unit 125 executes a process for supplying power to the connectors 22A to 22C (memory 151A to 151C, etc.) connected to the connectors 93A to 93C when the CPU 144 is activated. The CPU 144 determines the connector to which the device is connected from the connectors 93A to 93C and other connectors (not shown) based on this power supply process.

Next, the CPLD 143 reads out the program stored in the ROM 141 and outputs it to the FPGA 140. The FPGA 140 configures a selector 121, code assigning circuits 123A to 123C, and a multiplexing device 127 based on the input program. Further, in accordance with the circuit configuration of the FPGA 140, the control unit 125 reads various information stored in the memory 151 </ b> A of the connector 22 </ b> A and stores it in a corresponding area of the DRAM 146. At this time, the CPU 144 performs the same processing for the other connectors 22B and 22C, reads various information from the memories 151B and 151C included in the connectors 22B and 22C, and stores them in a corresponding area of the DRAM 146. Note that the CPU 144 is set not to execute the above-described reading process for connectors (including connectors 93A to 93C) to which no device is connected.

Next, the CPU 144 determines the type of error correction based on the information read from the memories 151A to 151C of the connectors 22A to 22C. For example, when the type of error correction of the connector 22A is not the type of error correction stored in advance in the ROM 141, the CPU 144 reconfigures the code assignment circuits 123A to 123C based on the circuit information stored in the memory 151A. To do. The memory 151A stores the circuit information of the code providing circuit corresponding to the data type (see FIG. 7), and the CPU 144 outputs the circuit information read to the DRAM 146 to the FPGA 140, thereby configuring the corresponding code adding circuit. The

In this case, the selector 121 is not always necessary. In the case where the sign assignment circuit to be configured is determined based on the input program, the sign assignment circuit (any one of 123A to 123C) can be directly connected to the corresponding connector (any one of 93A to 93C). .

Further, the CPU 144 outputs the data stored in the DRAM 146 to the FPGA 140. The FPGA 140 reconfigures (reconfigures) the circuit (input / output destination) of the selector 121 based on the input data. As a result, the code providing circuits 123A to 123C capable of executing appropriate error correction / detection processing are connected to the connectors 22A to 22C. Similarly, the connectors 22B and 22C are connected to code providing circuits 123A to 123C corresponding to the data type. Note that the control unit 135 of the optical wireless device 91 on the reception side is similar to the control unit 125 on the transmission side, based on data stored in memories (not shown) of the connectors 80A to 80C, and the selector 131 and the correction circuits 133A to 133A. By reconfiguring 133C, control is performed so that correction circuits 133A to 133C corresponding to the data types to be output to connectors 80A to 80C (connectors 91A to 91C) are connected.

In the multiplexed communication system 110 configured in this way, for example, image data acquired by the mark camera 47 on the transmission side shown in FIG. 5 is input to the optical wireless device 93 via the connector 93C and is input by the selector 121. The data is output to the code assigning circuit 123A corresponding to the image data. Further, the output of the code adding circuit 123A is input to the optical wireless device 91 via the transmission path 95 and subjected to data error detection / correction processing in the correction circuit 133A corresponding to the image data. The output of the correction circuit 133A is output from the connector 91A by the selector 131 and input to the image board 84. Therefore, in the optical wireless devices 91 and 93 according to the present embodiment, the control units 125 and 135 read the data stored in the memories (including the memories 151A to 151C) of the connectors 22A to 22C and 80A to 80C, and the read data Based on the above, the input / output destinations of the selectors 121 and 131 are switched, or each connector is connected to the corresponding code assigning circuit and correction circuit. As a result, the code assigning circuits 123A to 123C and the correction circuits 133A to 133C corresponding to the types are applied to the data inputted to and outputted from the connectors 22A to 22C and 80A to 80C. Therefore, when the user connects each device (such as the mounting head 22) to the mounting device 10, there is no need to be aware of which connector corresponds to which data type. That is, in the mounting device 10 to which various devices can be attached and detached, the mounting device 10 to which the device can be easily connected can be configured.

Note that the code adding circuits 134A to 134C and the correction circuits 124A to 124C shown in FIG. 5 are configured by programmable logic devices and configured based on circuit information, like the correction circuits 133A to 133C and the code adding circuits 123A to 123C. Configured.

As shown in FIG. 5, the optical wireless device 91 includes an external terminal 139 similar to the optical wireless device 93, and a ROM (not shown) included in the control unit 135 based on data input from the external terminal 139. The circuit information of the program (correction circuits 133A to 133C) stored in () is updated. The communication between the multiplexers 127 and 137 is performed by transmitting, for example, data corresponding to each error correction process (combination of the code adding circuits 123A to 123C and the correction circuits 133A to 133C) in the TDM frame data. For example, information (header or the like) indicating the data length of the frame and the data delimiter of each data type is added and transmitted.

Next, in the multiplexing communication system 110 described above, an operation when a new connection occurs in each of the connectors 91A to 91C and 93A to 93C of the optical wireless devices 91 and 93 during system operation will be described. In the following description, the operation of the control unit 125 when the connector 22A is connected to the connector 93A after the system is operated will be described with reference to the flowchart of FIG.
First, the control unit 125 performs processing for monitoring connections to the connectors 93A to 93C as the multiplexed communication system 110 operates (step S10 in FIG. 8). For example, the control unit 125 periodically detects input / output of the control signal terminals of the connectors 93A to 93C, and checks whether there is an interrupt process (power supply start, etc.) caused by a new connection to the connectors 93A to 93C. A determination process is performed (step S11). A case where a connector is connected in step S11 will be described. As an example, it is assumed that the connector 22A is connected to the connector 93A. When the interrupt signal of the connector 22A is input from the control signal terminal of the connector 93A along with the connection, the control unit 125 controls the communication of the multiplexed communication system 110 in cooperation with the control unit 135 on the receiving side. Is performed (step S13). In step S <b> 13, the control unit 125 performs a process of reading information on the data type from the memory 151 </ b> A of the connector 22 </ b> A and storing it in the DRAM 146. The control unit 125 performs the same processing for each of the connectors 93A to 93C when connection to the plurality of connectors 93A to 93C occurs.

Next, the control unit 125 determines whether the total value of the data transfer rates required for data communication in each of the connectors 22A to 22C exceeds the maximum communication rate in the transmission path 95 from the information stored in the DRAM 146 (see FIG. 7). Is determined (step S15). When the total data transfer rate exceeds the maximum communication rate, the control unit 125 performs a process of displaying the display 210 indicating the system error shown in FIG. 9 on, for example, the display device 13 (see FIG. 1) (Step 1). S17). In the example shown in FIG. 9, for the setting where the maximum communication speed of the transmission path 95 is 10,000 Mbps, the data transfer rate of the connector 22A is 125 Mbps, the data transfer rate of the connector 22B is 6000 Mbps, and the data transfer rate of the connector 22C is 6000 Mbps. In this example, the data transfer rate is 12125 Mbps. Thus, the user can confirm that the total data transfer rate has exceeded the set capacity of the system due to the connection change.

The display 210 displays a selection unit 211 that prompts the user to perform an operation, and the control unit 125 stops the processing until the selection unit 211 of the touch panel display device 13 is selected by the user, for example. Perform the process. For example, when the control unit 125 detects that the selection unit 211 has been selected, the control unit 125 restarts the process from step S10. The display 210 displays the data transfer rate of each of the connectors 22A to 22C. The user can confirm the connection error on the display 210 and can change the connection of the connectors 22A to 22C again according to the display. it can. Thereby, it is possible to configure the multiplexed communication system 110 that can more quickly cope with a system error due to the limitation of the maximum communication rate. The data transfer rate and display 210 shown in FIG. 9 are examples. The set value of the maximum communication rate is set in advance in, for example, the ROM 141 (see FIG. 6). The control unit 125 may output an error to another display device (for example, the display unit of the control device 80), a display lamp, or the like.

Next, when the total data transfer rate in step S15 is equal to or less than the maximum communication speed, the control unit 125 includes the circuit information (error correction type) of the code adding circuit stored in the ROM 141. Then, it is determined whether there is one corresponding to the type of error correction of the newly connected connector 22A (step S19). When there is corresponding circuit information in step S19, the control unit 125 (CPU 144) reads out data including the corresponding circuit information from the ROM 141 (step S21), and outputs the read circuit information to the FPGA 140 to give a code. Reconfiguration is performed in which the circuits 123A to 123C are changed to code adding circuits corresponding to the circuit information (step S22). If there is no corresponding circuit information in step S19, the control unit 125 executes a process of reading the circuit information of the sign assignment circuit from the memory 151A of the newly connected connector 22A to the DRAM 146 (step S24). . Then, the control unit 125 outputs the circuit information stored in the DRAM 146 to the FPGA 140 and executes reconfiguration (step S25).

Next, in step S27, the control unit 125 repeatedly executes reconfiguration until it can be confirmed whether the rewriting of the circuit for the FPGA 140 has been normally completed. For example, the control unit 125 inputs and outputs a test signal to the FPGA 140 to check whether the circuit is normally reconfigured. In step S27, when the control unit 125 determines that the circuit rewriting has been normally completed, the control unit 125 performs control to resume communication of the multiplexed communication system 110 in cooperation with the control unit 135 on the reception side (step S29). Then, the same process is executed again from the monitoring process in step S10. In the above description, the case where there is a new connection to one connector has been described. However, the same processing is sequentially performed when there is a new connection to a plurality of connectors. Further, the operation of the control unit 135 (reception side) (at the time of new connection to the connectors 80A to 80C) is the same as that of the control unit 125, and thus description thereof is omitted.

(Operation when communication is abnormal)
Next, an operation when communication abnormality occurs in the above-described multiplexed communication system 110 will be described.
As illustrated in FIG. 5, the multiplexing device 127 of the optical wireless device 93 includes a detection unit 128 that detects a communication abnormality in the transmission path 95. For example, when the transmission path 95 is disconnected, the detection unit 128 outputs the detection signal SI1 to the control unit 125. The control unit 125 controls each device (nozzle lifting device 43 and the like) included in the mounting head 22 based on the detection signal SI1 from the detection unit 128. The detection of the communication abnormality in the detection unit 128 is performed, for example, by periodically transmitting and receiving data for confirming communication between the multiplexers 127 and 137, and a state in which the data cannot be received passes for a predetermined time, or reception of optical wireless signals. Detection is possible based on conditions such as the amount being equal to or less than the threshold.

Here, the devices connected to the optical wireless devices 91 and 93 need to be appropriately processed according to the functions and features of each device when a communication abnormality occurs. For example, the nozzle lifting and lowering device 43 connected to the optical wireless device 93 needs to execute a process such as fail-safe to safely stop when communication with the control device 80 is cut off, that is, when control from the control device 80 becomes impossible. There is. Therefore, the control unit 125 performs control to stop the nozzle lifting / lowering device 43 (electromagnetic motor 43A) based on the detection signal SI1 from the detection unit 128. The control unit 125 performs control to output the control signal S1 to the electromagnetic motor 43A via the connectors 93A and 22A in accordance with the input of the detection signal SI1 to stop it safely.

Also, the multiplexing device 137 of the optical wireless device 91 includes a detection unit 138 that detects a communication abnormality in the transmission path 95. The detection unit 138 outputs the detection signal SI <b> 2 to the control unit 135 when detecting the disconnection of the transmission path 95. The control unit 135 controls the control device 80 based on the detection signal SI2 from the detection unit 138. For example, the control unit 135 controls a notification buzzer and a lamp (both not shown) connected to the control device 80 via the connectors 91A and 80A in response to the input of the detection signal SI2, and a communication abnormality has occurred to the user. Inform you. Thereby, a user can respond quickly to communication abnormality.

Note that the above control at the time of communication abnormality is an example, and the control content is appropriately changed according to the functions and features of the devices connected to the optical wireless devices 91 and 93. For example, when the detection signal SI1 is input, the control unit 125 does not stop the electromagnetic motor 43A and drives the mounting head 22 to the retracted position, or sets the fixing (locked) state so as not to change the state. Good. For example, the control unit 125 may perform control to stop the supply of power to the position detection sensor 45. Further, for example, the control unit 125 may perform control for setting the mark camera 47 to the initial state / position. In addition, for example, when communication disconnection occurs, invalid data may be input to each control board 84, 85, 86. Therefore, the control unit 135 may execute control for causing the control boards 84, 85, 86 to discard the input data when the detection signal SI2 is input. Moreover, you may change the control content according to the aspect of communication abnormality. For example, the control unit 125 may execute control to delay the rotation speed of the motor without stopping the electromagnetic motor 43A when reception data such as a momentary interruption cannot be temporarily received.

As mentioned above, according to this embodiment described in detail, there exist the following effects. The transmission-side control unit 125 reads information (data type shown in FIG. 7) related to the data type stored in the memories 151A to 151C of the connectors 22A to 22C, and controls the selector 121 based on the read data. As a result, the connectors 22A to 22C are connected to the code providing circuits 123A to 123C for performing the error correction setting process according to the input / output data type. The data set by the code adding circuits 123A to 123C is multiplexed by the multiplexer 127 and transmitted.
On the other hand, on the receiving side, the multiplexing device 137 demultiplexes the signal transferred from the transmitting side, separates it into individual data, and outputs the data to the correction circuits 133A to 133C. Similarly to the control unit 125 on the transmission side, the control unit 135 reads data stored in the memories (not shown) of the connectors 80A to 80C and controls the selector 131, and controls the connectors 80A to 80C according to the data type. The correction circuits 133A to 133C are connected.

As a result, the sign assigning circuits 123A to 123C and the correction circuits 133A to 133C corresponding to the types are applied to the data inputted to and outputted from the connectors 22A to 22C and 80A to 80C. As a result, the user does not need to be aware of which connector corresponds to which data type when connecting each device (such as the mounting head 22) to the mounting device 10. That is, in the mounting device 10 to which various devices can be attached and detached, the mounting device 10 to which the device can be easily connected can be configured.

Incidentally, the multiplexing communication system 110 is an example of a communication system, the mounting head 22 is an example of an electrical equipment, the optical wireless devices 91 and 93 are examples of a data communication unit, and the memories 151A to 151C are information storage units. As an example, connectors 91A to 91C and 93A to 93C are examples of connection terminals, sign assignment circuits 123A to 123C are examples of error processing setting means, and detection units 128 and 138 are examples of abnormality detection units. The correction circuits 133A to 133C are examples of error checking means, the selector 121 is an example of a transmission side selection means, the selector 131 is an example of a reception side selection means, the control unit 125, and the selector 121 is a transmission side control part. As an example, the control unit 135 and the selector 131 are an example of the receiving side control unit. One example of a Guramaburu logical device.

In addition, this invention is not limited to said embodiment, It cannot be overemphasized that various improvement and change are possible within the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, communication by optical wireless has been described as an example. However, the present application is not limited to this, and can be applied to wireless communication using various electromagnetic waves in addition to infrared rays and visible light. Further, the present invention can be similarly applied to wired communication, and can be similarly applied to telecommunication instead of wireless communication.
Moreover, although the said embodiment demonstrated the communication which multiplexed as an example, this application is not limited to this.

The above-described multiplexed communication system 110 is not limited to communication between devices (the control device 80 and other devices) built in the mounting device 10, and is similarly applied to communication between a plurality of mounting devices 10. Can do. In short, the present invention can be applied to multiplexed communication that requires an error correction rule to be adapted according to the type of data to be transmitted.

In the above embodiment, the data type is handled as a different data type for each data type shown in FIG. 4, but the present application is not limited to this. For example, in the above embodiment, servo control information is handled as one data type, and one type of error correction processing (for example, majority logic) is performed. However, the present invention is not limited to this. For example, even if the servo control information is the same data type, the servo control information is different for each servo control information for controlling the electromagnetic motor 33 corresponding to the X-axis direction and the electromagnetic motor 60 corresponding to the Y-axis direction in FIG. Each type of error handling may be implemented. That is, the type of data in the present application includes a case where data is handled as a different type according to a control target, other data handling mode, and the like.

In addition, data transmitted in the multiplexed communication system 110 of the above embodiment may include data that is not subjected to error processing. Further, error processing may be performed a plurality of times for one type of data.

In the above embodiment, the connectors 93A to 93C output different data types, but a plurality of connectors may output or input the same data type. For example, in the optical wireless device 300 illustrated in FIG. 10, data classified into the same data type is input from the connectors 303 and 304 connected to the transmission-side selector 301. Note that FIG. 10 shows a state of two switching operations in the selectors 301 and 308 in FIG.

Based on the control from the control unit 312, the selector 301 switches the connection of the connectors 303 and 304 to one code adding circuit 306 corresponding to the data type. Also, the output side of the code assigning circuit 306 is connected to the multiplexing device 310 via the selector 308. That is, in the configuration shown in FIG. 10, the selector 308 controlled by the control unit 312 is also provided on the output side of the code providing circuit 306.
Here, for example, a case where 10 Mbps is set as the data transfer rate in the memories 303A and 304A of the connectors 303 and 304 will be described. The control unit 312 controls the selector 301 to maintain the data transfer rate required for the data output of the connectors 303 and 304 based on the information read from the memories 303A and 304A. For example, the control unit 312 causes the selectors 301 and 308 and the sign assigning circuit 306 to be calculated by multiplying the number of connectors (two in this case) that output the same data type as the data transfer rate, that is, 20 Mbps. The operation frequency is maintained to maintain the data transfer rate. As a result, it is possible to perform an appropriate error correction process while maintaining the required data transfer rate. In the configuration shown in FIG. 10, it is preferable that the selectors 301 and 308 are provided with buffers 313 and 314 corresponding to the outputs of the connectors 303 and 304, respectively. For example, a buffer that stores data in a FIFO (First In First Out) format is conceivable.

In addition, the configuration of the connectors (connectors 22A to 22C, etc.) as connection portions in the above embodiment is an example, and may be changed as appropriate. For example, the optical wireless device 93 is configured such that the connectors 93A to 93C are connected to the connectors 22A to 22C on a one-to-one basis, but the present invention is not limited to this, and a plurality of inputs / outputs corresponding to the connectors 93A to 93C are used. It is good also as a structure which provides a terminal etc. in one (1 set) connector, ie, the structure which connects the mounting head 22 and the optical radio | wireless apparatus 93 by 1 set of connectors. In such a configuration in which a connector having a plurality of terminals and the like is used as a connection portion, by applying the present invention, for example, the arrangement of the input / output terminals of the connector included in the mounting head 22 according to the type and function of the mounting head 22 If the terminal arrangement is such that it is electrically connected to the terminal on the optical wireless device 93 side even when the signal is changed, a suitable error correction process is applied to the data input to and output from each terminal. Is possible.

In the above-described embodiment, the ROM 141 storing the circuit information (the code addition circuits 123A to 123C and the correction circuits 133A to 133C) may be omitted. For example, the code adding circuits 123A to 123C and the correction circuits 133A to 133C are configured based on circuit information (see FIG. 7) stored in the memories (including the memories 151A to 151C) included in the connectors 22A to 22C and 80A to 80C. May be. Thereby, by reading out necessary circuit information from the connected connector as needed and configuring the system, the optical wireless devices 91 and 93 do not need to be provided with circuit information (libraries) in advance, and the system configuration is more versatile. can do.
Contrary to the above configuration, the circuit information may not be stored in the memories 151A to 151C, that is, the circuit information of the code adding circuits 123A to 123C and the correction circuits 133A to 133C may be stored only in the ROM 141. In this case, the necessary combinations of circuit information are assumed to be combinations of numbers obtained by multiplying the number of connectors and the number of types of error correction. Therefore, it is preferable to store all of them in the ROM 141 in advance.

Also, the control unit 125 may output an error when the circuit information of the code assigning circuits 123A to 123C corresponding to the data types of the connectors 22A to 22C is not stored in the memories 151A to 151C and the ROM 141.

Further, a part of the circuits of the selector 121, the code assigning circuits 123A to 123C, and the multiplexing device 127 of the optical wireless device 93 may be configured by FPGA. Further, the selector 121 and the multiplexer 127 and the code assigning circuits 123A to 123C may be configured by separate FPGAs. Needless to say, the optical wireless device 93 can be configured with a configuration that does not use a programmable logic device such as an FPGA, that is, a built-in circuit that cannot be changed on the user side (field).

Moreover, in the operation | movement at the time of communication abnormality in the multiplex communication system 110 of the said embodiment, although the control parts 125 and 135 controlled each apparatus based on detection signal SI1 and SI2 of the detection parts 128 and 138, it is limited to this. Not. For example, the detection units 128 and 138 may directly control the electromagnetic motor 43A when communication is abnormal.

Moreover, the structure of the mounting apparatus 10 of the said embodiment is an example, and changes suitably. For example, it is good also as a structure provided with two or more moving apparatuses 23 which can be attached or detached with respect to the apparatus main body 11. FIG. For example, it is good also as a structure provided with multiple conveyor belts 31 (plural lanes). Further, for example, a configuration in which a plurality of mounting devices 10 are drivingly connected in the transport direction may be employed.
The memories 151A to 151C as information storage units may be changed to other devices / devices (for example, dip switches, rotary switches, jumper pins, etc.) that can set information related to data types. Further, the information storage unit may be configured using a plurality of types of these devices.

110 multiplexing communication system, 22 mounting head, 91, 93 optical wireless device, 151A to 151C memory, 22A to 22C, 80A to 80C connector, 123A to 123C code assigning circuit, 128 and 138 detection unit, 133A to 133C correction circuit, 121, 131 selector, 125, 135 control unit, 127, 137 multiplexer, 140 FPGA, 129, 139 external terminal

Claims (11)

1. A communication system for performing communication of the data with different types of error processing depending on the type of data,
   An electrical device comprising an information storage unit in which information relating to the type of data to be communicated is stored;
   A data communication unit including a connection terminal to which the electrical device is connected;
   The data communication unit is
   Error processing setting means for acquiring information related to the type of data from the information storage unit provided in the electrical device on the transmission side, and setting additional information related to error processing according to the data based on the information, A transmission side control unit assigned to the connection terminal to which the electrical equipment is connected;
   An error check that acquires information related to the type of data from the information storage unit provided in the electrical device on the receiving side, and performs error detection processing or error detection / correction processing according to the data based on the information And a receiving-side control unit that assigns means to the connection terminal to which the electrical device is connected.
2. The transmission side control unit
   A plurality of the error processing setting means are provided for each type of data,
   The connection terminal to which the electrical device on the transmission side is connected is connected to one of the plurality of error processing setting means based on the information relating to the type of data acquired from the information storage unit of the electrical device. A transmission side selection means,
   The receiving side control unit
   A plurality of the error checking means are provided for each type of the data,
   Reception for connecting the connection terminal to which the electrical device on the receiving side is connected to any one of the plurality of error checking means based on the information relating to the type of data acquired from the information storage unit of the electrical device The communication system according to claim 1, further comprising side selection means.
3. The transmission side control unit and the reception side control unit are:
   The communication according to claim 1, further comprising: a programmable logic device in which the error processing setting unit and the error checking unit are configured based on configuration data corresponding to the acquired information regarding the type of the data. system.
4. The data communication unit is
   A storage unit for storing the configuration data;
   The communication system according to claim 3, wherein corresponding configuration data is selected from the storage unit based on information relating to the type of data acquired from the information storage unit provided in the electrical device.
5. 4. The communication system according to claim 3, wherein the information related to the type of data includes the configuration data.
6. At least one of the transmission side control unit or the reception side control unit performs error output when the configuration data corresponding to the acquired information on the type of data is not stored in the storage unit. The communication system according to claim 4, characterized in that:
7. A data transfer rate is determined for each type of data,
   The transmission-side control unit and the reception-side control unit perform error output when a value obtained by summing the data transfer rates according to information on the acquired data type exceeds a maximum communication rate. A communication system according to any one of claims 1 to 6.
8. The communication system according to any one of claims 1 to 7, wherein the information storage unit includes at least one of a memory, a dip switch, a rotary switch, and a jumper pin.
9. The data communication unit includes an abnormality detection unit that detects an abnormality in communication of the data,
   The at least one of the transmission side control unit and the reception side control unit outputs a control signal to the electrical device based on a detection signal of the abnormality detection unit. Communications system.
10. An electronic component mounting apparatus that transmits various types of data with different types of error processing according to the type of data related to the mounting operation of the electronic component on the board, by communication,
    An electrical device comprising an information storage unit in which information relating to the type of data to be communicated is stored;
    A data communication unit including a connection terminal to which the electrical device is connected;
    The data communication unit is
    Error processing setting means for acquiring information related to the type of data from the information storage unit provided in the electrical device on the transmission side, and setting additional information related to error processing according to the data based on the information, A transmission side control unit assigned to the connection terminal to which the electrical equipment is connected;
    An error check that acquires information related to the type of data from the information storage unit provided in the electrical device on the receiving side, and performs error detection processing or error detection / correction processing according to the data based on the information An electronic component mounting apparatus comprising: a receiving side control unit that assigns means to the connection terminal to which the electrical device is connected.
11. An error processing method of a communication system for performing communication of the data in which the type of error processing differs according to the type of data,
    With the operation of the communication system, monitoring the connection of the electrical equipment to the connection terminal of the data communication unit that transmits and receives the data;
    In the monitoring step, when a new connection of the electrical equipment is detected, stopping the transmission / reception of the data of the data communication unit;
    Obtaining from the newly connected electrical device information relating to the type of data that the electrical device inputs and outputs;
    Allocating processing means for performing error processing according to the type of data input / output to / from the electrical equipment based on the acquired information to the connection terminal to which the electrical equipment is connected. An error processing method for a communication system.

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