WO2022191218A1 - プログラム管理装置、ロボット制御システム、及びプログラム管理方法 - Google Patents
プログラム管理装置、ロボット制御システム、及びプログラム管理方法 Download PDFInfo
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- WO2022191218A1 WO2022191218A1 PCT/JP2022/010146 JP2022010146W WO2022191218A1 WO 2022191218 A1 WO2022191218 A1 WO 2022191218A1 JP 2022010146 W JP2022010146 W JP 2022010146W WO 2022191218 A1 WO2022191218 A1 WO 2022191218A1
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- robot
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1602—Programme controls characterised by the control system, structure, architecture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1656—Programme controls characterised by programming, planning systems for manipulators
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/056—Programming the PLC
Definitions
- the present disclosure relates to a program management device, a robot control system, and a program management method.
- Patent Literature 1 describes a robot control system in which a plurality of robots can be operated by an operation panel via switching means.
- Patent Literature 2 describes a configuration in which a sequencer controls a sequence to be executed by a robot.
- a program management device includes a communication unit, a storage unit, and a control unit.
- the communication unit is configured to communicate with at least one robot control unit.
- the storage section stores a plurality of first programs that are executed by the at least one robot control section and that control the operation of the robot.
- the control unit links at least one first program selected from the plurality of first programs based on a request from a link control unit capable of linking with the at least one robot control unit to the link control unit. Output to at least one specific robot controller scheduled for the system.
- a program management device includes an interface that receives user input, a communication unit, a storage unit, and a control unit.
- the communication unit is configured to communicate with at least one robot control unit capable of controlling at least one robot and at least one linkage control unit capable of linking with the at least one robot control unit.
- the storage unit stores at least one first program executable by the at least one robot control unit and at least one second program executable by the at least one linkage control unit.
- the control unit is connected to the interface, the communication unit and the storage unit.
- the controller controls a specific second program corresponding to at least one specific first program selected based on the input, and at least one specific robot scheduled to execute the at least one specific first program. Output to a specific link control unit scheduled to link with the control unit.
- a program management device includes an interface that receives user input, a communication unit, a storage unit, and a control unit.
- the communication unit is configured to communicate with at least one robot control unit capable of controlling at least one robot and at least one linkage control unit capable of linking with the at least one robot control unit.
- the storage unit stores at least one first program executable by the at least one robot control unit and at least one second program executable by the at least one linkage control unit.
- the control unit is connected to the interface, the communication unit and the storage unit.
- the control unit selects at least one specific first program corresponding to a specific second program based on the input and is scheduled to be linked with a specific linkage control unit scheduled to execute the specific second program. Output to at least one specific robot controller.
- a robot control system includes the program management device, the robot control section, and the linkage control section.
- a program management method includes storing a plurality of first programs to be executed by at least one robot controller that controls motion of a robot.
- at least one first program selected from the plurality of first programs is selected from the plurality of first programs by a linkage control section capable of linking with the at least one robot control section, and the at least one program is selected by the linkage control section. Outputting from a robot controller to the selected robot controller.
- FIG. 1 is a schematic diagram showing a configuration example of a robot control system according to an embodiment
- FIG. 1 is a block diagram showing a configuration example of a robot control system according to an embodiment
- FIG. It is a schematic diagram which shows the structural example in which a robot and an external device interlock.
- 10 is a flow chart showing an example of a pre-preparation procedure for a program
- 4 is a table showing setting examples of input ports and output ports
- FIG. 4 is a diagram showing an example of a user interface for setting relationships between input ports and output ports between a PLC and a robot controller or an external device;
- FIG. 4 is a diagram showing an example of a user interface for setting relationships between input ports and output ports between a robot control device and an external device; 4 is a flow chart showing an example of a procedure for selecting a program and causing a robot to perform work; 4 is a flow chart showing an operation example based on a selected program; It is a figure which shows an example of the ladder diagram corresponding to a ladder program.
- FIG. 4 is a diagram showing an example of data flow when a program is selected to cause a robot to perform a task;
- the robot controller controls the motion of the robot by executing a pre-written program.
- a robot controller needs to switch programs in order to cause the robot to perform multiple actions. There is a demand for improved convenience in managing programs corresponding to each action to be executed by a robot.
- a robot control system 1 includes a server 10, a terminal device 20, a robot 40, a robot control device 41, and a programmable logic controller (PLC) 60. Prepare.
- the robot controller 41 controls the robot 40 .
- the robot control system 1 further comprises an external device 50, although this is not essential.
- the robot control system 1 causes the PLC 60 to select the action to be executed by the robot 40 .
- the operator who is the user of the robot control system 1 can select the action to be executed by the robot 40 by operating the PLC 60 .
- the robot control system 1 stores in advance a program for causing the robot 40 to perform an action, and downloads the program to the robot control device 41 based on the action selected by the PLC 60 .
- the robot control system 1 generates a ladder program for interlocking the PLC 60 with the robot controller 41 based on the program downloaded to the robot controller 41 and downloads it to the PLC 60 .
- the PLC 60 instructs the external device 50 to operate.
- the robot control system 1 generates a ladder program so that the PLC 60 interlocks the external device 50 with the robot 40 . By doing so, the robot control system 1 interlocks the robot 40 and the external device 50 .
- a configuration in which an operator individually copies a program to a robot control device can be considered.
- the robot control system 1 according to this embodiment copying work can be omitted.
- the memory of the robot controller 41 can be saved by downloading the appropriate programs to the robot controller 41 .
- the operation of copying the program to the robot control device can be executed by the operator operating the terminal device.
- the program can be easily installed in the robot control device 41 by allowing the operator to select the program via the PLC 60, and the program for operating the robot 40 can be easily installed. management convenience can be improved.
- the robot control system 1 can generate a ladder program corresponding to the selected program and download it to the PLC 60 . Therefore, the operator can operate the robot 40 only by operating the PLC 60 .
- the robot 40 can be controlled by a simple operation via the PLC 60 different from the terminal device 20, so workability can be improved and the risk of unauthorized operation can be reduced. can be
- Each component of the robot control system 1 is communicably connected to each other via a network 80 .
- Each component of the robot control system 1 may be communicatively connected without going through the network 80 .
- Each component of the robot control system 1 may be communicatively connected by wire or wirelessly.
- Each component of the robot control system 1 may be communicably connected via a dedicated line.
- Each component of the robot control system 1 is not limited to these examples, and may be communicably connected to each other in various other forms.
- the server 10 and the robot controller 41 or PLC 60 are communicably connected via the access point 82 in FIG. They may be communicatively connected without going through a base station.
- the access point 82 refers to a wireless device for connecting terminals equipped with a wireless connection function to each other or to other networks. It is a device that operates on layer (physical layer) and layer 2 (data link layer) communication protocols.
- the robot control device 41, the PLC 60, and the external device 50 are communicably connected without the network 80 in FIG.
- the number of servers 10 and terminal devices 20 is not limited to three as illustrated, but may be two or less, or may be four or more.
- the number of combinations of the robot 40 and the robot control device 41 is not limited to two as illustrated, but may be one, three or more.
- One robot controller 41 may control one robot 40 as illustrated, or may control two or more robots 40 .
- the server 10 includes a server control section 11 , a storage section 12 and a server interface 13 .
- the server control unit 11 is also simply called a control unit.
- the server interface 13 is also called server I/F 13 .
- Server 10 is communicably connected to network 80 via server I/F 13 .
- the server 10 is also called a program management device.
- the server control unit 11 may include at least one processor in order to implement various functions of the server 10 .
- the processor may execute programs that implement various functions of the server 10 .
- a processor may be implemented as a single integrated circuit.
- An integrated circuit is also called an IC (Integrated Circuit).
- a processor may be implemented as a plurality of communicatively coupled integrated and discrete circuits.
- the processor may be configured including a CPU (Central Processing Unit).
- the processor may be configured including a DSP (Digital Signal Processor) or a GPU (Graphics Processing Unit). Processors may be implemented based on various other known technologies.
- the server 10 further comprises a storage unit 12.
- the storage unit 12 may be configured including an electromagnetic storage medium such as a magnetic disk, or may be configured including a memory such as a semiconductor memory or a magnetic memory.
- the storage unit 12 may be configured as an HDD (Hard Disk Drive) or an SSD (Solid State Drive).
- the storage unit 12 stores various information, programs executed by the server control unit 11, and the like.
- the storage unit 12 may function as a work memory for the server control unit 11 . At least part of the storage unit 12 may be included in the server control unit 11 .
- the server I/F 13 may be configured including a communication device that is configured to enable wired or wireless communication.
- the server I/F 13 is also called a communication unit.
- a communication device may be configured to be able to communicate with communication schemes based on various communication standards.
- the server I/F 13 can be configured using known communication technology. A detailed description of the hardware of the server I/F 13 is omitted.
- the functions of the server I/F 13 may be realized by one interface, or may be realized by separate interfaces for each connection destination.
- the server 10 may be configured as a server device.
- the server device may be configured including at least one information processing device.
- the server device may be configured to cause a plurality of information processing devices to execute parallel processing.
- the server device does not need to be configured including a physical enclosure, and may be configured based on virtualization technology such as a virtual machine or container orchestration system.
- the server device may be configured using a cloud service.
- cloud services it can be configured by combining managed services. That is, the functions of the server 10 can be implemented as cloud services.
- the server device may comprise at least one server group and at least one database group.
- the server group functions as a server control unit 11 .
- the database group functions as the storage unit 12 .
- the number of server groups may be one or two or more. When the number of server groups is one, functions realized by one server group include functions realized by each server group.
- Each server group is communicably connected to each other by wire or wirelessly.
- the number of database groups may be one or two or more. The number of database groups may be increased or decreased as appropriate based on the capacity of data managed by the server device and availability requirements for the server device.
- the database group is communicably connected to each server group by wire or wirelessly.
- the server 10 is described as one configuration in FIGS. 1 and 2, multiple configurations can be regarded as one system and operated as necessary. That is, the server 10 is configured as a platform with variable capacity. By using a plurality of configurations as the server 10, even if one configuration becomes inoperable in the event of an unforeseen event such as a natural disaster, the operation of the system can be continued using the other configurations.
- each of the plurality of components is connected by a line, whether wired or wireless, and configured to be able to communicate with each other.
- These multiple configurations may be built across cloud services and on-premises environments.
- the server 10 is connected to each of the terminal device 20, the robot control device 41, and the PLC 60 via lines that may be wired or wireless.
- the server 10, the terminal device 20, the robot control device 41, and the PLC 60 are provided with interfaces using standard protocols, and are capable of two-way communication.
- the terminal device 20 includes a terminal control section 21 , a terminal interface 22 and an input/output section 23 .
- the terminal control unit 21 is also simply called a control unit.
- the terminal interface 22 is also called terminal I/F 22 .
- the terminal device 20 is communicably connected to the network 80 via the terminal I/F 22 .
- the terminal control unit 21 may be configured including at least one processor.
- the terminal control unit 21 may be configured identically or similarly to the server control unit 11 of the server 10 .
- the terminal control unit 21 may execute an application that causes the input/output unit 23 to provide a GUI (Graphical User Interface).
- the terminal control unit 21 may provide the GUI by executing a GUI program distributed from another device such as the server 10 on the web browser.
- the terminal control unit 21 receives a GUI program from another device such as the server 10 based on a request input to the web browser by the user, and renders it on the web browser.
- the terminal device 20 may further include a storage unit.
- the storage unit of the terminal device 20 may be configured the same as or similar to the storage unit 12 of the server 10 .
- the terminal I/F 22 may be configured identically or similarly to the server I/F 13 of the server 10 .
- the input/output unit 23 is configured to provide the user of the robot control system 1 with the GUI described above.
- the input/output unit 23 includes an output device that outputs information to the user and an input device that receives input from the user.
- the output device may be configured including a display device.
- the display device may include, for example, a liquid crystal display (LCD), an organic EL (Electro-Luminescence) display or an inorganic EL display, or a plasma display (PDP: Plasma Display Panel).
- the display device is not limited to these displays, and may be configured to include other various types of displays.
- the display device may include a light-emitting device such as an LED (Light Emitting Diode).
- the display device may be configured including other various devices.
- the output device may include an audio output device such as a speaker that outputs auditory information such as voice. Output devices are not limited to these examples, and may be configured to include other various devices.
- the input device may include, for example, a touch panel or touch sensor, or a pointing device such as a mouse.
- the input device may be configured including physical keys.
- the input device may include an audio input device such as a microphone. Input devices are not limited to these examples, and may be configured to include other various devices.
- the terminal device 20 may be configured including at least one information processing device.
- the number of terminal devices 20 included in the robot control system 1 is not limited to one, and may be two or more.
- each terminal device 20 may receive input from the user.
- the terminal device 20 may be configured as a tablet terminal.
- the terminal device 20 may be configured as a mobile phone terminal such as a feature phone or a smart phone.
- the terminal device 20 may be configured as a PC terminal such as a desktop PC (Personal Computer) or a notebook PC.
- the terminal device 20 is not limited to these examples, and may be configured as various devices capable of providing GUI and communication functions.
- the terminal device 20 can execute more or advanced operations or requests than those performed via the PLC 60 among the operations or requests related to the control of the robot 40 . Moreover, the terminal device 20 has specifications specialized for the robot 40 compared to the PLC 60 . For example, the terminal device 20 may be used by the user to store in the server 10 in advance a program that specifies actions to be performed by the robot 40 . Terminal device 20 may be used to monitor the status of robot 40 . The terminal device 20 is not limited to these examples and can provide various other functions.
- the robot controller 41 includes a robot controller 45 .
- the robot controller 45 may include at least one processor to implement various functions or controls of the robot controller 41 .
- the robot control unit 45 is configured to be able to control at least one robot 40 .
- the robot controller 45 may be configured identically or similarly to the server controller 11 of the server 10 .
- the robot control device 41 may further include a storage unit.
- the storage unit of the robot control device 41 may be configured the same as or similar to the storage unit 12 of the server 10 .
- the robot control device 41 downloads from the server 10 a program specifying the work to be executed by the robot 40 .
- the program specifying the work to be executed by the robot 40 is also called a first program.
- the robot control device 41 outputs information for controlling the operation of the robot 40 to the robot 40 based on the downloaded program, and causes the robot 40 to perform the work specified by the program.
- the work performed by the robot 40 may include, for example, moving a work object between two points.
- the robot control device 41 may have an interface for downloading programs from the server 10 .
- the interface of the robot control device 41 may be configured the same as or similar to the server I/F 13 of the server 10 .
- the robot control device 41 may include a processor that generates information for controlling the motion of the robot 40 based on a program.
- the processor of the robot control device 41 may be configured the same as or similar to the processor configuring the server control unit 11 of the server 10 .
- one robot controller 41 is connected to one robot 40.
- One robot controller 41 may be connected to two or more robots 40 .
- One robot controller 41 may control only one robot 40 or may control two or more robots 40 .
- the number of robot controllers 41 and robots 40 is not limited to two, and may be one or three or more.
- Robot 40 may be configured as a robotic arm comprising an arm.
- the arm may be configured as a 6-axis or 7-axis vertical articulated robot, for example.
- the arm may be configured as a 3-axis or 4-axis horizontal articulated robot or a SCARA robot.
- the arm may be configured as a 2-axis or 3-axis Cartesian robot.
- the arm may be configured as a parallel link robot or the like. The number of axes forming the arm is not limited to the illustrated one.
- the robot 40 may have an end effector attached to the arm.
- the end effector may include, for example, a gripping hand configured to grip a work object.
- the grasping hand may have multiple fingers. The number of fingers of the grasping hand may be two or more.
- the fingers of the grasping hand may have one or more joints.
- the end effector may include a suction hand configured to be able to suction the work target.
- the end effector may include a scooping hand configured to scoop the work object.
- the end effector includes a tool such as a drill, and may be configured to be able to perform various machining operations such as drilling a hole in a work object.
- the end effector is not limited to these examples, and may be configured to perform various other operations.
- the robot 40 can control the position of the end effector by operating the arm.
- the end effector may have an axis that serves as a reference for the direction in which it acts on the work object. If the end effector has an axis, the robot 40 can control the orientation of the end effector axis by moving the arm.
- the robot 40 controls the start and end of the motion of the end effector acting on the work piece.
- the robot 40 can move or process a work object by controlling the position of the end effector or the direction of the axis of the end effector and controlling the motion of the end effector.
- the robot 40 may be configured as an automated guided vehicle (AGV).
- AGV automated guided vehicle
- Robot 40 may be configured as a drone.
- the robot 40 is not limited to a robot arm or AGV, and may be configured in various other forms such as a vehicle, an electronic device, or a control machine.
- the robot 40 may further include sensors that detect the state of each component of the robot 40 .
- the sensors may detect information regarding the actual position or orientation of each component of the robot 40 or the velocity or acceleration of each component of the robot 40 .
- the sensors may detect forces acting on each component of the robot 40 .
- the sensors may detect the current flowing through the motors that drive each component of the robot 40 or the torque of the motors.
- the sensors can detect information resulting from the actual movement of robot 40 .
- the robot control device 41 can grasp the actual operation result of the robot 40 by acquiring the detection result of the sensor.
- the PLC 60 executes programs such as ladder programs.
- a program such as a ladder program executed by the PLC 60 is also referred to as a second program.
- the PLC 60 operates sequentially by downloading a ladder program from the server 10 and executing the downloaded ladder program.
- the PLC 60 operates in conjunction with the operation of the robot 40 .
- the PLC 60 is configured to be able to link with the robot 40 by being communicably connected to each robot control device 41, and is also called a linked control device.
- PLC 60 may control the input of information at input ports and the output of information at output ports.
- the PLC 60 may be communicably connected to the server 10 via a gateway device.
- the PLC 60 can execute less or simpler operations or requests than those performed via the terminal device 20 among the operations or requests related to the control of the robot 40 .
- the PLC 60 can perform simplified or generalized operations of facilities in the robot control system 1 including each robot 40 and/or the external device 50 compared to the terminal device 20 .
- the PLC 60 can execute an operation, a request, an instruction, etc., such as starting or stopping equipment including the robot 40 and the external device 50 .
- the PLC 60 includes a PLC control section 61.
- the PLC control unit 61 may be configured including at least one processor to implement various functions or controls of the PLC 60 .
- the PLC controller 61 may be configured identically or similarly to the server controller 11 of the server 10 .
- the PLC 60 also includes an input device that receives input from the user and an output device that displays information to be notified to the user.
- the input device and output device of the PLC 60 may be configured identically or similarly to the input device and output device of the input/output unit 23 of the terminal device 20 .
- the PLC 60 may further include a storage unit.
- the storage unit of the PLC 60 may be configured identically or similarly to the storage unit 12 of the server 10 .
- the external device 50 is a device different from the robot 40 .
- the external device 50 may be equipment installed on a production line for manufacturing products, for example.
- the external device 50 processes a part received from the robot 40 and delivers it to the robot 40 .
- the external device 50 includes at least one of a device and a jig that work together with the robot 40 .
- the robot 40 takes parts in and out of the external device 50 .
- the external device 50 is communicably connected to the PLC 60 and operates based on control information from the PLC 60 .
- the external device 50 may include, for example, a device for processing parts, or may include a jig for aligning or shaping parts.
- the external device 50 is not limited to these examples, and may be configured including various devices or jigs.
- the external device 50 may be configured to perform various types of work such as assembly work, painting work, or screw tightening work, without being limited to processing work of parts.
- the robot control system 1 causes the robot 40 to perform work on the work target component 30 by interlocking the robot 40 and the external device 50 in the configuration shown in FIG. 3 .
- the robot 40 includes a robot arm 42 , a camera 43 and a robot hand 44 .
- the camera 43 and the robot hand 44 are installed at or near the tip of the robot arm 42 .
- the robot 40 moves the camera 43 and the robot hand 44 by moving the robot arm 42 .
- the robot 40 detects the work target component 30 accommodated in the first tray 31 with the camera 43 , grips the work target component 30 with the robot hand 44 , and puts it into the external device 50 .
- the external device 50 executes predetermined work on the work target component 30 .
- the external device 50 executes machining work on the work target component 30 .
- the robot 40 grips the work target component 30 that has been worked by the external device 50 with the robot hand 44 , takes it out of the external device 50 , and stores it in the second tray 32 .
- the robot control device 41 causes the robot 40 to perform the above-described actions by downloading from the server 10 and executing a program that specifies the above-described actions.
- the PLC 60 downloads from the server 10 and executes a ladder program generated based on the program specifying the above-described motion, thereby controlling the external device 50 or controlling the external device 50 based on the state of the robot 40 .
- the robot controller 41 is caused to control the robot 40 based on the state of 50 . In other words, the PLC 60 interlocks the external device 50 with the operation of the robot 40 .
- a program specifying the above-described motion is created in advance by, for example, a worker who is a user of the robot control system 1 .
- the user uses the terminal device 20 to teach the robot 40 about the work he wants the robot 40 to perform, and creates a program that specifies the work he wants the robot 40 to perform.
- the user wants a plurality of robots 40 to perform the same work, the user only has to perform teaching with one robot 40 .
- a program created by executing teaching in one robot 40 can also be applied to other robots 40 .
- a program including control for the external device 50 is created. For example, if the task to be performed by the robot 40 is loading and unloading of parts to and from the external device 50, it is necessary to perform teaching including the operation of the external device 50 and include the operation of the external device 50 in the program.
- External device 50 is configured to start and stop based on control information from PLC 60 .
- PLC60 transmits the signal of a start with respect to the external device 50, when a signal is received. At the same time, the robot controller 41 stops the robot 40 .
- the external device 50 performs work such as processing on the work target component 30 that has been put in by the robot 40 .
- the PLC 60 transmits a stop signal to the external device 50 when the external device 50 completes the execution of the predetermined work or when the predetermined work time has elapsed.
- the external device 50 stops based on the stop signal.
- the PLC 60 transmits to the robot control device 41 a signal indicating that the work in the external device 50 has ended.
- the robot controller 41 causes the robot 40 to resume its operation.
- the robot 40 takes out the work target component 30 from the external device 50 and places the component on the second tray 32 .
- the robot control system 1 may perform teaching according to the procedure of the flowchart illustrated in FIG.
- the terminal device 20 sets the input port and output port of each device (step S1). Specifically, the terminal device 20 sets the correspondence between the input ports and the output ports used for communication between the robot control device 41 , the PLC 60 and the external device 50 .
- the terminal device 20 sets which input port or output port the PLC 60 communicates with the robot controller 41 and the external device 50, as shown in the table in FIG. 5, for example. According to the configuration illustrated in FIG. 5, the PLC 60 communicates with the robot controller 41's 1st and 2nd input ports on the 1st and 2nd output ports, and communicates with the robot controller 41 on the 3rd and 4th input ports.
- the terminal device 20 receives an input regarding the setting of the input port and output port of each device from the user, and sets the input port and output port based on the user input.
- the terminal device 20 may accept user input through the user interface illustrated in FIG.
- the description "PLC.1" in the column corresponding to the PLC 60 indicates that the input port and output port of the first PLC 60 are set when the robot control system 1 has a plurality of PLCs 60.
- FIG. The first PLC 60 is hereinafter simply referred to as the PLC 60 .
- the description "Rob.1" in the column corresponding to the robot control device 41 indicates that the input port and output port of the first robot control device 41 are set when the robot control system 1 includes a plurality of robot control devices 41. represents.
- the first robot controller 41 is hereinafter simply referred to as the robot controller 41 .
- the description "Jig.1" in the column corresponding to the external device 50 indicates that the input port of the first external device 50 is set when the robot control system 1 has a plurality of external devices 50 .
- the first external device 50 is hereinafter simply referred to as the external device 50 .
- the terminal device 20 can set the input ports and output ports of a plurality of PLCs 60, robot control devices 41, or external devices 50.
- the terminal device 20 allows the user to select the number of the PLC 60 and the number of its input port or output port from a pulldown.
- the terminal device 20 allows the number of the robot control device 41 and the number of its input port or output port to be selected by pull-down.
- the input or output port numbers of the number of devices selected in the same row are associated with each other.
- the first output port (“Out.1”) of the PLC 60 and the first input port (“In.1”) of the robot controller 41 are associated with each other.
- the signal output from the No. 1 output port of the PLC 60 is input to the No. 1 input port of the robot controller 41 .
- the second output port (“Out.2”) of the PLC 60 and the second input port (“In.2”) of the robot controller 41 are associated with each other.
- the signal output from the No. 2 output port of the PLC 60 is input to the No. 2 input port of the robot controller 41 .
- the 3rd input port (“In.3”) of the PLC 60 and the 3rd output port (“Out.3”) of the robot controller 41 are associated with each other. That is, the signal output from the No. 3 output port of the robot controller 41 is input to the No. 3 input port of the PLC 60 .
- the 4th input port (“In.4”) of the PLC 60 and the 4th output port (“Out.4”) of the robot controller 41 are associated with each other.
- the signal output from the No. 4 output port of the robot controller 41 is input to the No. 4 input port of the PLC 60 .
- the fifth output port (“Out.5”) of the PLC 60 and the first input port (“In.1”) of the external device 50 are associated with each other. That is, the signal output from the No. 5 output port of the PLC 60 is input to the No. 1 input port of the external device 50 .
- the terminal device 20 allows the user to select a blank instead of a number.
- the No. 1 output port of the PLC 60 is associated with the No. 1 input port of the robot controller 41, but is not associated with the input and output ports of the external device 50.
- the example of FIG. 6 the No. 1 output port of the PLC 60 is associated with the No. 1 input port of the robot controller 41, but is not associated with the input and output ports of the external device 50.
- the terminal device 20 can increase the robot control device 41, the PLC 60, or the external device 50 to two or more units as necessary in the user interface illustrated in FIG. Also, the terminal device 20 can increase the number of input ports and output ports of each device. By doing so, the terminal device 20 can provide a user interface that can define all input ports and output ports of all devices included in the robot control system 1 .
- the terminal device 20 associates an input port and an output port so as to realize communication between the robot control device 41 and the external device 50 via the PLC 60 .
- the terminal device 20 may accept user input through the user interface illustrated in FIG. In the example of FIG. 7, the number 4 output port (“Out.4”) of the robot control device 41 and the number 1 input port (“In.1”) of the external device 50 are associated.
- a Hi signal (“H”) is output from the No. 4 output port (“Out. 1”) is input with a Hi signal (“H”).
- the terminal device 20 outputs the setting of the input port and the output port to the server 10.
- the server 10 stores the setting of the input port and output port in the storage unit 12 .
- the terminal device 20 executes the logic of the operation (step S2). Specifically, the terminal device 20 defines the operation of each device when the signal communicated at each input port or each output port is Hi, and the operation of each device when the signal is Lo. That is, the terminal device 20 associates the logic (Hi or Lo) of signals communicated at each input port or each output port with the operation of each device.
- the terminal device 20 receives an input from the user regarding the action to be executed by the robot 40 when the robot control device 41 receives a Hi signal at a specific input port.
- the terminal device 20 defines the operation of each device when a Hi or Lo signal is received at each input port based on user input.
- the terminal device 20 outputs the action definition to the server 10 .
- the server 10 stores the action definition in the storage unit 12 .
- the terminal device 20 executes teaching of the robot 40 (step S3). Specifically, the terminal device 20 can allow the user to teach the robot 40 by operating as follows. It should be noted that the following operation example is simply described. In the operation examples below, processing when an error occurs is omitted.
- the user operates the terminal device 20 to perform teaching.
- the user instructs to start the robot 40 when the robot controller 41 receives a Lo signal at the input port No. 2.
- the robot controller 41 outputs a Hi signal from the output port No. 3 to notify the PLC 60 that the robot 40 is ready for operation. to direct.
- the user instructs to operate the robot 40 when the robot controller 41 receives a Hi signal at the first input port.
- the terminal device 20 actually causes the robot controller 41 to operate the robot 40 by accepting an input designating the motion of the robot 40 from the user.
- the user designates the motion of the robot 40 with the terminal device 20 while confirming the actual motion of the robot 40 .
- the user operates the robot arm 42 of the robot 40 to move the robot arm 42 above the first tray 31 set at the determined coordinates.
- the user allows the robot 40 to recognize the existence of the first tray 31 with the camera 43 installed on the robot arm 42 .
- the user causes the camera 43 to recognize whether the work target component 30 exists in the first tray 31 .
- the user causes the robot hand 44 set on the robot arm 42 to grip the work target component 30 . After that, the user moves the robot arm 42 and stops it in front of the external device 50 at the determined coordinates.
- the user confirms whether the robot controller 41 has received a Lo signal at the second input port.
- Receiving a Lo signal at the No. 2 input port means that the external device 50 is in a stopped state.
- the user instructs the robot controller 41 to operate the robot 40 again when the robot controller 41 receives a Lo signal at the second input port.
- the user causes the robot control device 41 to move the work target part 30 to the determined coordinates in the external device 50, release the robot hand 44, place the work target part 30 at the coordinates, and move the robot arm. 42 instructs to return to the front of the external device 50 .
- the user instructs the robot controller 41 to output a Hi signal to the No. 4 output port.
- the PLC 60 outputs a Hi signal to the No. 1 input port of the external device 50 .
- the external device 50 starts work on the work target component 30 by receiving a Hi signal at the first input port.
- the user confirms whether the robot control device 41 has received a Hi signal at the second input port.
- Receiving a Hi signal at the No. 2 input port means that the external device 50 has finished its operation and entered a stopped state.
- the user causes the robot control device 41 to operate the robot 40 after the robot control device 41 receives a signal of Hi at the input port No. 2 .
- the robot control device 41 moves the robot arm 42 to the machined work target component 30 in the external device 50 , grips it with the robot hand 44 , moves it to the second tray 32 , and moves the robot arm 42 to the second tray 32 . By opening the hand 44 , the part to be worked 30 is placed in the second tray 32 .
- the terminal device 20 can create a teaching program that causes the robot 40 to perform the series of operations described above based on user input.
- the terminal device 20 outputs a program specifying the motion of the robot 40 to the server 10 (step S4).
- Programs include teaching programs.
- the server 10 stores the acquired program in the storage unit 12 and generates a ladder program for the PLC 60 based on the acquired program (step S5).
- the server 10 generates a ladder program based on the content of the acquired teaching program.
- the server 10 generates a ladder program based on the acquired teaching program, input port and output port setting data, and operation definition data.
- the server 10 creates a ladder program in a format installable in the PLC 60 . By generating the ladder program by the server 10, the user does not have to input information to create the ladder program.
- the PLC 60 can install the ladder program by downloading it from the server 10 or by importing the ladder program using a portable memory or the like in the terminal device 20 .
- the server 10 may use ladder program generation tool software prepared in advance to generate the ladder program from the teaching program.
- a ladder program is defined in the international standard IEC61131-3.
- a ladder program written according to international standards can be executed in any PLC 60 in principle. In this embodiment, it is assumed that the ladder program is described in the IEC61131-3 standard format.
- the server 10 activates the ladder program generation tool software on the terminal device 20, allows the user to select a teaching program as a basis for generating the ladder program from a list of stored teaching programs, and generates the ladder program.
- the server 10 describes the operation when the PLC 60 is activated in the ladder program as the first command based on the definitions of the input port and output port numbers of each device. Next, the server 10 describes a command for initializing the external device 50 in the ladder program.
- the server 10 extracts commands for controlling input ports and output ports included in the teaching program.
- the server 10 writes in the ladder program commands in which the relationship between signal transmission and reception at each input port or each output port is reversed.
- the teaching program includes a command "activate the robot 40 when the robot controller 41 receives a Lo signal at the input port No. 2".
- the server 10 describes a command "output a Lo signal from the second output port of the PLC 60" as a ladder program.
- the server 10 writes a command for the PLC 60 to control the operation of the external device 50 in the ladder program based on the definition that associates the signal output by the robot control device 41 to the input port and the output port with the operation of the external device 50.
- the server 10 may describe in the ladder program a command for maintaining the state of the signal for a predetermined period of time using a timer of the PLC 60 .
- a ladder program can also be generated by compiling a ladder diagram. A ladder diagram that compiles into a ladder program is described below.
- the server 10 stores the ladder program in the storage section 12 .
- Server 10 exports the ladder program and imports it into PLC 60 .
- the server 10 may export the ladder program to the terminal device 20 and have the terminal device 20 import it to the PLC 60 .
- the robot control system 1 After completing the procedure of step S5 of FIG. 4, the robot control system 1 ends the execution of the procedure of the flowchart of FIG. As described above, the robot control system 1 can generate in advance a teaching program specifying the motion of the robot 40 and a ladder program corresponding to the teaching program by executing the procedure of the flowchart illustrated in FIG. .
- the terminal device 20 created a program for specifying the motion of the robot 40, but it may be created by other configurations such as the server 10, for example. Also, in the above description, an example in which the ladder program is created by the server 10 has been described, but it may be created by another configuration such as the terminal device 20, for example.
- the robot control system 1 stores programs in the server 10 in advance. As a normal operation, the robot control system 1 allows the user to select a program and causes the robot 40 to perform the work specified by the selected program. The data flow in normal operation is described below.
- the user turns on the power of the robot 40 main body.
- the task of turning on the power may be performed for each of the plurality of robots 40 .
- the work of turning on the power of the plurality of robots 40 may be performed collectively.
- the robot 40 By energizing the robot 40, it enters a standby state waiting for the download of the teaching program. In the standby state, the robot controller 41 that controls the robot 40 does not have a teaching program. Therefore, even if some kind of trouble occurs in the robot 40, the teaching program will not be unexpectedly executed. In other words, the robot 40 does not move unexpectedly. Note that the robot control device 41 may delete the once-downloaded program after the robot 40 completes the scheduled operation.
- the PLC 60 accepts input from the user to select the robot 40 to perform the work.
- the PLC 60 also receives an input from the user for selecting the work to be executed by the robot 40 .
- PLC 60 provides a user interface to allow the user to enter selections. The user inputs selections from the operation panel of PLC 60 .
- the PLC 60 may display the robot number as information specifying the robot 40 on the operation panel, and may display a nickname such as "Robot #1" or “Taro” as the robot name.
- the PLC 60 may display a work number or a work name such as "work" on the operation panel as information specifying the work content of the robot 40 .
- Information specifying the robot 40 and work content displayed on the operation panel is stored inside the PLC 60 as a robot number and a program number, respectively, by internal processing of the PLC 60 .
- the PLC 60 may display an execution switch on the operation panel.
- PLC 60 may have a run button implemented as hardware. The user causes the selected robot 40 to execute the selected work by pressing an execution switch displayed on the operation panel or an execution button implemented as hardware.
- the PLC 60 transmits to the server 10 information about the robot 40 and work content specified by the user's selection, and information for the user to instruct the robot 40 to perform the work. Specifically, the PLC 60 transmits to the server 10 data including a work execution instruction for the robot 40 and the robot number and program number as arguments of the execution instruction.
- the PLC 60 may transmit information to the server 10 via the gateway device, or may transmit information via the network 80 without the gateway device. Also, the robot control device 41 may be used as a gateway device.
- the server 10 When the server 10 receives data from the PLC 60, it calls the teaching program corresponding to the received program number from among the teaching programs stored in the server 10. The server 10 downloads the called teaching program to the robot controller 41 of the robot 40 corresponding to the received robot number. The robot control device 41 generates control information for controlling the operation of the robot 40 based on the downloaded teaching program, and causes the robot 40 to perform work.
- the robot control system 1 After creating a teaching program and a ladder program in advance, the robot control system 1 allows the user to select a program and operate the robot 40 as a normal operation.
- the robot control system 1 may perform normal operations according to the procedure of the flowchart illustrated in FIG.
- the PLC 60 selects the robot 40 and the work to be executed by the robot 40 (step S11). Specifically, the PLC 60 accepts user input specifying which robot 40 is to perform a task and which task the robot 40 is to perform. In other words, the user operates the PLC 60 to select the robot 40 that he wants to execute and the work that he wants the robot 40 to execute.
- the PLC 60 receives an input from the user instructing activation (step S12). Specifically, the PLC 60 outputs information instructing the operation of the robot 40 to the server 10 when the user presses the activation switch.
- the server 10 downloads the program to the robot controller 41 and PLC 60 (step S13). Specifically, the server 10 downloads to the robot controller 41 a teaching program that specifies the work selected by the user on the PLC 60 .
- the downloaded teaching program is written in JSON format. The data size of the teaching program is several kilobytes. Therefore, the time spent downloading is short.
- the server 10 also downloads to the PLC 60 a ladder program corresponding to the teaching program downloaded to the robot controller 41 .
- the robot control device 41 starts the operation of the robot 40 based on the downloaded teaching program (step S14). Also, the PLC 60 operates based on the downloaded ladder program. PLC60 may control the external device 50 based on a ladder program.
- the robot control system 1 After completing the procedure of step S14, the robot control system 1 ends the execution of the procedure of the flowchart of FIG. As described above, the robot control system 1 can cause the user to select a program and operate the robot 40 as a normal operation by executing the procedure of the flowchart illustrated in FIG.
- the robot control system 1 When the robot control system 1 causes the robot 40 to perform a task based on the user's selection, it may specifically execute the procedure of the flowchart illustrated in FIG.
- the robot controller 41 when a Hi signal is sent from the first output port of the PLC 60 to the first input port of the robot controller 41, the robot controller 41 causes the robot 40 to start operating. That is, the robot control device 41 makes the robot 40 work. Conversely, when a Lo signal is sent from the first output port of the PLC 60 to the first input port of the robot controller 41, the robot controller 41 stops the robot 40 from operating.
- the robot control device 41 recognizes that the external device 50 is in operation. Conversely, when a Lo signal is transmitted from the No. 2 output port of the PLC 60 to the No. 2 input port of the robot controller 41, the robot controller 41 recognizes that the external device 50 is stopped.
- the PLC 60 indicates that the robot controller 41 has completed preparation (preparation OK). recognize. Conversely, when a Lo signal is transmitted from the No. 3 output port of the robot controller 41 to the No. 3 input port of the PLC 60, the PLC 60 indicates that the robot controller 41 has not completed preparation (Preparation NG ).
- the pre-preparation includes, for example, preparatory work for activating the robot 40 and putting it in a state ready for operation.
- Post-preparation OK When a Hi signal is transmitted from the 4th output port of the robot controller 41 to the 4th input port of the PLC 60, the PLC 60 indicates that the robot controller 41 has completed post-preparation (post-preparation OK). recognize. Conversely, when a Lo signal is transmitted from the 4th output port of the robot controller 41 to the 4th input port of the PLC 60, the PLC 60 indicates that the robot controller 41 has not completed post-preparation (post-preparation NG). ). Post-preparation includes, for example, the work of moving the work target component 30 to the external device 50 by the robot 40 .
- the external device 50 when a Hi signal is transmitted from the 5th output port of the PLC 60 to the 1st input port of the external device 50, the external device 50 starts operating. That is, the external device 50 works. Conversely, when a Lo signal is transmitted from the 5th output port of the PLC 60 to the 1st input port of the external device 50, the external device 50 stops operating.
- the PLC 60 is activated based on the pressing of the activation switch by the user (step S31).
- the PLC 60 outputs a Lo signal to the second output port (I/O#2) and the fifth output port (I/O#5) (step S32).
- the external device 50 receives a Lo signal from the 5th output port of the PLC 60 to the 1st input port of the external device 50, the external device 50 itself stops operating (step S41).
- the external device 50 prepares so that the robot 40 can put the workpiece 30 inside the external device 50 .
- the external device 50 stops until it receives the next Hi signal.
- the robot control device 41 When the robot control device 41 receives a Lo signal at the input port No. 2 (I/O#2), it activates the robot 40 (step S21). The robot control device 41 outputs a Hi signal to the third output port (I/O#3) (step S22). When the PLC 60 receives a Hi signal at the 3rd input port (I/O#3), it outputs a HI signal to the 1st output port (I/O#1) (step S33). When the robot controller 41 receives a Hi signal at the first input port (I/O#1), the robot controller 41 operates the robot 40 (step S23). The robot 40 moves the work target component 30 from the first tray 31 to the external device 50 (step S24).
- the robot control device 41 After the robot 40 moves the work target component 30 to the external device 50, the robot control device 41 outputs a Hi signal to the output port No. 4 (I/O#4) (step S25). The robot control device 41 temporarily stops the robot 40 (step S26). When the PLC 60 receives a Hi signal at the input port No. 4 (I/O#4), the output port No. 2 (I/O#2) and the output port No. 5 (I/O#5) A Hi signal is output (step S34). When the external device 50 receives a Hi signal from the 5th output port of the PLC 60 to the 1st input port of the external device 50, it operates (step S42). The external device 50 specifically executes processing work and the like on the work target component 30 put in by the robot 40 .
- the PLC 60 counts time with a timer, and outputs a Lo signal to the second output port (I/O#2) and the fifth output port (I/O#5) after a predetermined time has elapsed (step S35). . It is assumed that the predetermined time is enough time for the external device 50 to complete the work on the work target component 30 . After executing the procedure of step S35, the PLC 60 ends the execution of the procedure of the flowchart of FIG.
- the external device 50 When the external device 50 receives a Lo signal from the 5th output port of the PLC 60 to the 1st input port of the external device 50, it stops the operation of the external device 50 itself (step S43). The external device 50 prepares so that the robot 40 can pick up the workpiece 30 from the external device 50 . After executing the procedure of step S43, the external device 50 ends the execution of the procedure of the flowchart of FIG.
- the robot control device 41 When the robot control device 41 receives a Lo signal at the second input port (I/O#2), it restarts the operation of the robot 40 (step S27). Specifically, the robot control device 41 controls the robot 40 so that the robot 40 picks up the work target component 30 from the external device 50 and places it on the second tray 32 . After executing the procedure of step S27, the robot control device 41 ends the execution of the procedure of the flowchart of FIG.
- the PLC 60 receives work instructions from the user, downloads a program specifying the selected work to the controller, and causes the robot 40 to execute the work.
- the convenience of program management can be improved.
- the risk of the robot 40 operating at unintended timing can be reduced.
- FIG. 10 shows an example of a ladder program expressed as a ladder diagram.
- the first to third lines of the ladder diagram illustrated in FIG. 10 are turned ON by pressing the switch X0.
- the PLC 60 outputs a Lo signal to Y1 when X0 is turned ON.
- the output of the signal to Y1 corresponds to the PLC 60 outputting a Lo signal to the external device 50 from the 5th output port. In other words, outputting a signal to Y1 corresponds to an instruction to stop the external device 50 .
- the PLC 60 outputs a Lo signal to Y2 when X0 is turned ON. Outputting the signal to Y2 corresponds to outputting a Lo signal from the second output port of the PLC 60 to the second input port of the robot controller 41 . In other words, outputting a signal to Y2 corresponds to informing the robot control device 41 that the external device is in a stopped state.
- X1 turns ON when a Hi signal is received from the 3rd output port of the robot controller 41 to the 3rd input port of the PLC 60 .
- the PLC 60 outputs a Hi signal to Y3 when X1 is turned ON.
- the signal output to Y3 corresponds to outputting a Hi signal from the first output port of the PLC 60 to the first input port of the robot controller 41 . In other words, outputting a signal to Y3 corresponds to activating the robot 40 .
- X2 turns ON when a Hi signal is received from the 4th output port of the robot controller 41 to the 4th input port of the PLC 60 .
- the PLC 60 starts counting by the timer T0 when X2 is turned ON. T0 is turned ON for a predetermined period of time as counted by a timer.
- PLC 60 outputs a signal to Y1 while T0 is ON.
- the output of the signal to Y1 corresponds to the PLC 60 outputting a Hi signal to the external device 50 from the 5th output port. In other words, outputting a signal to Y1 corresponds to an instruction to operate the external device 50 .
- the PLC 60 operates the external device 50 for a predetermined period of time based on the signal from the robot control device 41 based on the sixth to eighth lines of the ladder diagram.
- the PLC 60 accepts input from the user to select the robot 40 to perform the work.
- the PLC 60 also receives an input from the user for selecting the work to be executed by the robot 40 .
- the data flow when the user selects the robot 40 on the PLC 60 is indicated by an arrow labeled "robot name selection”.
- the data flow when the user selects the work content on the PLC 60 is represented by an arrow labeled "select work number”.
- the PLC 60 accepts an input of an instruction to cause the robot 40 to execute the work by having the user press the execution switch or execution button.
- the flow of data when the user presses the execution switch or execution button on the PLC 60 is indicated by the arrow labeled "execution button pressed" in FIG.
- the PLC 60 transmits to the server 10 information about the robot 40 and work content specified by the user's selection, and information for the user to instruct the robot 40 to perform the work.
- the data flow from the PLC 60 to the server 10 is represented by arrows labeled "robot number transmission”, “program number transmission”, and "execution instruction signal transmission” in FIG.
- the server 10 downloads the teaching program to the robot controller 41 based on the information received from the PLC 60.
- the flow of data from the server 10 to the robot 40 is represented by the arrow labeled "Program Download" in FIG.
- the robot control system 1 includes a PLC 60 as a linkage control device that operates in linkage with the robot 40 .
- the robot control system 1 is not limited to the PLC 60 as a linkage control device, and may include other various controllers such as a relay device or a production equipment control computer.
- the linkage control device includes a linkage control section.
- the link control unit may include at least one processor to implement various functions or controls of the link control device.
- the linkage controller may be configured identically or similarly to the server controller 11 of the server 10 .
- the robot control system 1 may have a configuration such as a facility management control system that operates on the cloud as a link control device. Even if the linkage control device operates on the cloud, at least the user interface may be configured to operate in an on-premises environment.
- the robot control system 1 creates a first program that specifies the work to be executed by the robot 40 by teaching.
- the first program is not limited to the teaching program, and may include other various programs.
- the robot control system 1 generates a ladder program as a second program to be executed by the linkage control device.
- the second program is not limited to the ladder program, and may include other various programs.
- the server control unit 11 may install the first program in the robot control device 41 at a predetermined timing.
- the server control unit 11 may install the second program in the link control device at a predetermined timing so that the robot control device 41 in which the first program is installed and the link control device are linked.
- the predetermined timing may be, for example, before the robot 40 performs normal movement for the first time.
- the predetermined timing may be set based on the operation plan of the robot 40 . By installing at a predetermined timing, operation of the robot 40 can be started efficiently, simply and in a short time. Further, the server control unit 11, the robot control device 41, or the link control device may delete the first program or the second program that has been installed once, after the scheduled operation of the robot 40 or the external operation is completed.
- the storage unit 12 stores at least one first program executable by at least one robot control unit 45 and at least one second program executable by at least one linkage control unit.
- the server control unit 11 extracts from the storage unit 12 specific second programs corresponding to at least one specific first program, and specifies that at least one specific first program is scheduled to be executed.
- a specific second program is output to at least one robot control unit 45 and a specific linkage control unit scheduled to be linked.
- the user may select an external device 50 communicatively connected to a specific linkage control device. That is, the linkage control device may receive an input from the user to select the external device 50 to execute the work, and download the teaching program according to the user's selection result.
- the storage unit 12 stores at least one first program executable by at least one robot control unit 45 and at least one second program executable by at least one linkage control unit.
- the server control unit 11 selects a specific second program including control of the external device 50 selected by the user and at least one specific first program corresponding to the specific second program.
- At least one specific first program is output to the specific link control unit scheduled to be executed and at least one specific robot control unit 45 scheduled to be linked.
- at least one specific first program may be extracted based on user input.
- the linkage control device, the robot control device 41, and the external device 50 are each provided with an input port for inputting signals and an output port for outputting signals.
- Each device may have input/output ports that can function as both input and output ports.
- each device may perform serial communication through an input/output port based on a communication standard such as LAN (Local Area Network) or RS-232C or RS485.
- the terminal device 20 determines whether each input/output port is to function as an input port or an output port in the procedure of setting the input ports and output ports in step S1 of FIG. set further. Specifically, when each device communicates via a LAN, the terminal device 20 may specify an input/output port number as an input/output port setting using an address. In addition, the terminal device 20 may specify whether the input/output port with the specified number is to function as an input port or an output port by a bit represented by Hi or Lo data.
- the server 10 may function as part or all of the terminal device 20 . That is, for example, the server 10 may have part or all of the terminal control section 21 , and the server control section 11 may function as part or all of the terminal control section 21 . In this case, some or all of terminal 20 may be integrated into server 10, and server 10 may perform the various functions and controls of terminal 20 described above.
- the terminal device 20 in the above description can be read as the server 10, and the server control unit 11 or the terminal control unit 21 of the server 10 executes various functions and controls of the terminal device 20 described above.
- various configurations of the server 10 may function as various configurations of the terminal device 20
- the server 10 may have various configurations of the terminal device 20 .
- the server 10 may function as part or all of the robot control device 41 . That is, for example, the server 10 may have part or all of the robot control section 45 that controls the robot 40, or the server control section 11 may function as part or all of the robot control section 45. .
- the robot controller 41 may be integrated into the server 10, and the server 10 may perform the various functions and controls of the robot controller 41 described above.
- the robot control device 41 in the above description can be read as the server 10, and the server control unit 11 or the robot control unit 45 of the server 10 performs various functions and controls of the robot control device 41 described above.
- various configurations of the server 10 may also function as various configurations of the robot control device 41 , and the server 10 may have various configurations of the robot control device 41 . In this case, it may be integrated with part or all of the terminal device 20 .
- the server 10 may function as part or all of the PLC 60 . That is, for example, the server 10 may have part or all of the PLC controller 61 , and the server controller 11 may function as part or all of the PLC controller 61 .
- PLC 60 may be integrated into server 10, and server 10 may perform the various functions and controls of PLC 60 described above.
- the PLC 60 in the above description may be read as the server 10, and the server control unit 11 or the PLC control unit 61 of the server 10 may execute various functions and controls of the PLC 60 described above.
- various configurations of the server 10 may function as various configurations of the PLC 60 , and the server 10 may have various configurations of the PLC 60 . In this case, it may be integrated with either or both of the terminal device 20 and the robot control device 41 .
- each component of the robot control system 1 may be integrated as described above.
- a storage medium on which the program is recorded for example, an optical disc, Magneto-optical disk, CD-ROM, CD-R, CD-RW, magnetic tape, hard disk, memory card, etc.
- the program may be stored on a non-transitory computer-readable medium.
- the implementation form of the program is not limited to an application program such as an object code compiled by a compiler or a program code executed by an interpreter. good.
- the program may or may not be configured so that all processing is performed only in the CPU on the control board.
- the program may be configured to be partially or wholly executed by another processing unit mounted on an expansion board or expansion unit added to the board as required.
- Embodiments according to the present disclosure are not limited to any specific configuration of the embodiments described above. Embodiments of the present disclosure extend to any novel feature or combination thereof described in the present disclosure or any novel method or process step or combination thereof described. be able to.
- Descriptions such as “first” and “second” in this disclosure are identifiers for distinguishing the configurations. Configurations that are differentiated in descriptions such as “first” and “second” in this disclosure may interchange the numbers in that configuration. For example, a first program can exchange identifiers “first” and “second” with a second program. The exchange of identifiers is done simultaneously. The configurations are still distinct after the exchange of identifiers. Identifiers may be deleted. Configurations from which identifiers have been deleted are distinguished by codes. The description of identifiers such as “first” and “second” in this disclosure should not be used as a basis for interpreting the order of the configuration or the existence of lower numbered identifiers.
- the server 10 executes a program management method including the procedures shown in FIGS.
- the program management method may be implemented as a program management program that is executed by a processor included in server 10 .
- the program management program may be stored on a non-transitory computer readable medium.
- robot control system 10 server (11: server control unit, 12: storage unit, 13: server I/F) 20 terminal device (21: terminal control unit, 22: terminal I/F, 23: input/output unit) 30 Parts to be Worked 31, 32 First Tray, Second Tray 40 Robot (42: Robot Arm, 43: Camera, 44: Robot Hand) 41 robot controller (45: robot controller) 50 external device 60 PLC (61: PLC control unit) 80 network (82: access point)
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Abstract
Description
図1及び図2に示されるように、一実施形態に係るロボット制御システム1は、サーバ10と、端末装置20と、ロボット40と、ロボット制御装置41と、プログラマブルロジックコントローラ(PLC)60とを備える。ロボット制御装置41は、ロボット40を制御する。ロボット制御システム1は、必須ではないが外部装置50を更に備える。
また、比較例に係るシステムにおいて、ロボット制御装置にプログラムをコピーする作業は、作業者による端末装置の操作によって実行され得る。一方で、本実施形態に係るロボット制御システム1では、PLC60を介して、作業者にプログラムを選択させることによって、簡易にロボット制御装置41にプログラムをインストールすることができ、ロボット40を動作させるプログラムの管理の利便性が向上され得る。
ロボット制御システム1の各構成部は、ネットワーク80を介して互いに通信可能に接続される。ロボット制御システム1の各構成部は、ネットワーク80を介さずに通信可能に接続されてもよい。ロボット制御システム1の各構成部は、有線又は無線で通信可能に接続されてもよい。ロボット制御システム1の各構成部は、専用回線を介して通信可能に接続されてもよい。ロボット制御システム1の各構成部は、これらの例に限られず他の種々の形態で互いに通信可能に接続されてもよい。
サーバ10は、サーバ制御部11と、記憶部12と、サーバインタフェース13とを備える。サーバ制御部11は、単に制御部とも称される。サーバインタフェース13は、サーバI/F13とも称される。サーバ10は、サーバI/F13を介してネットワーク80に通信可能に接続される。サーバ10は、プログラム管理装置とも称される。
端末装置20は、端末制御部21と、端末インタフェース22と、入出力部23とを備える。端末制御部21は、単に制御部とも称される。端末インタフェース22は、端末I/F22とも称される。端末装置20は、端末I/F22を介してネットワーク80に通信可能に接続される。
ロボット制御装置41は、ロボット制御部45を備える。ロボット制御部45は、ロボット制御装置41の種々の機能又は制御を実現するために、少なくとも1つのプロセッサを含んで構成されてよい。ロボット制御部45は、少なくとも1つのロボット40を制御可能に構成される。ロボット制御部45は、サーバ10のサーバ制御部11と同一又は類似に構成されてよい。ロボット制御装置41は、記憶部を更に含んで構成されてもよい。ロボット制御装置41の記憶部は、サーバ10の記憶部12と同一又は類似に構成されてよい。
ロボット40は、アームを備えるロボットアームとして構成されてよい。アームは、例えば、6軸又は7軸の垂直多関節ロボットとして構成されてよい。アームは、3軸又は4軸の水平多関節ロボット又はスカラロボットとして構成されてもよい。アームは、2軸又は3軸の直交ロボットとして構成されてもよい。アームは、パラレルリンクロボット等として構成されてもよい。アームを構成する軸の数は、例示したものに限られない。
PLC60は、ラダープログラム等のプログラムを実行する。PLC60が実行するラダープログラム等のプログラムは、第2プログラムとも称される。本実施形態において、PLC60は、サーバ10からラダープログラムをダウンロードし、ダウンロードしたラダープログラムを実行することによってシーケンシャルに動作する。また、PLC60は、ロボット40の動作と連係して動作する。つまり、PLC60は、各ロボット制御装置41と通信可能に接続されることによってロボット40と連係可能に構成され、連係制御装置とも称される。PLC60は、入力ポートにおける情報の入力、及び、出力ポートにおける情報の出力を制御してよい。PLC60は、ゲートウェイ装置を介してサーバ10と通信可能に接続されてもよい。
外部装置50とは、ロボット40とは異なる装置である。外部装置50は、例えば、製品を製造するための生産ライン上に設置された設備であってもよい。外部装置50は、例えば、ロボット40から入れられた部品を加工して、ロボット40に払い出す。外部装置50は、ロボット40と連動する装置及び治具の少なくとも一方を含んで構成される。ロボット40は、外部装置50に部品を出し入れする。外部装置50は、PLC60に通信可能に接続され、PLC60からの制御情報に基づいて動作する。外部装置50は、例えば部品を加工する装置を含んで構成されてよいし、部品を整列させたり整形したりする治具を含んで構成されてよい。外部装置50は、これらの例に限られず、種々の装置又は治具を含んで構成されてよい。外部装置50は、部品の加工作業に限られず、組み立て作業、塗装作業又はネジ締め作業等の種々の作業を実行するように構成されてよい。
本実施形態に係るロボット制御システム1は、図3に示される構成においてロボット40と外部装置50とを連動させることによって、作業対象部品30に対する作業をロボット40に実行させるとする。具体的に、ロボット40は、ロボットアーム42と、カメラ43と、ロボットハンド44とを備える。カメラ43及びロボットハンド44は、ロボットアーム42の先端又は先端付近に設置されている。ロボット40は、ロボットアーム42を動かすことによって、カメラ43及びロボットハンド44を移動させる。ロボット40は、第1トレイ31に収容されている作業対象部品30をカメラ43で検出し、作業対象部品30をロボットハンド44で把持して外部装置50に入れる。外部装置50は、作業対象部品30に対してあらかじめ定められた作業を実行する。本実施形態では、外部装置50は、作業対象部品30に対して加工作業を実行する。ロボット40は、外部装置50で作業後の作業対象部品30をロボットハンド44で把持して外部装置50から取り出し、第2トレイ32に収容する。
上述の動作を特定するプログラムは、例えば、ロボット制御システム1のユーザである作業者によってあらかじめ作成される。具体的に、ユーザは、端末装置20を用いて、ロボット40に実行させたい作業についてティーチングを実行し、ロボット40に実行させたい作業を特定するプログラムを作成する。ユーザは、複数台のロボット40に同じ作業を実行させる場合、1台のロボット40でティーチングを実行すればよい。1台のロボット40でティーチングを実行することによって作成したプログラムは、他のロボット40にも適用できる。
上述してきたように、ロボット制御システム1は、サーバ10にプログラムをあらかじめ格納する。ロボット制御システム1は、通常の動作として、ユーザにプログラムを選択させて、選択されたプログラムで特定される作業をロボット40に実行させる。以下、通常の動作におけるデータの流れが説明される。
以上説明してきたように、本実施形態に係るロボット制御システム1は、PLC60でユーザからの作業指示を受け付け、選択された作業を特定するプログラムをコントローラにダウンロードして作業をロボット40に実行させる。このようにすることで、プログラムの管理の利便性が向上され得る。また、ロボット40が意図しないタイミングで動作するリスクが低減され得る。また、ユーザに端末装置20を操作させずPLC60だけを操作させることによって、作業性の向上又は不正操作のリスクの低減が実現され得る。
以下、他の具体例が説明される。
図10に、ラダー図として表したラダープログラムの一例が示される。図10に例示されるラダー図の1行目から3行目までにおいて、スイッチX0が押されることによってONになる。PLC60は、X0がONになった場合、Y1にLo信号を出力する。Y1への信号の出力は、PLC60が5番の出力ポートから外部装置50にLoの信号を出力することに対応する。つまり、Y1への信号の出力は、外部装置50を停止させる指示に対応する。
以下、図11を参照して、通常の動作におけるデータの流れの具体例が説明される。
本実施形態に係るロボット制御システム1は、ロボット40に連係して動作する連係制御装置として、PLC60を備える。ロボット制御システム1は、連係制御装置として、PLC60に限られず、例えばリレー装置又は生産設備制御コンピュータ等の他の種々のコントローラを備えてよい。なお、連係制御装置は、連係制御部を備える。連係制御部は、連係制御装置の種々の機能又は制御を実現するために、少なくとも1つのプロセッサを含んで構成されてよい。連係制御部は、サーバ10のサーバ制御部11と同一又は類似に構成されてよい。また、ロボット制御システム1は、連係制御装置として、クラウド上で動作する設備管理制御システム等の構成を備えてもよい。連係制御装置がクラウド上で動作する場合であっても、少なくともユーザインタフェースは、オンプレミス環境で動作するように構成されてよい。
上記で説明した実施形態では、サーバ10の他に端末装置20を有する例を説明したが、サーバ10は、端末装置20の一部又は全部として機能してもよい。すなわち、例えば、サーバ10は、端末制御部21の一部又は全部を有していてもよいし、サーバ制御部11が端末制御部21の一部又は全部として機能してもよい。この場合、端末装置20の一部又は全部はサーバ10へ統合され、サーバ10が、上記で説明した端末装置20の種々の機能及び制御を実行してもよい。具体的には、上記の説明における端末装置20はサーバ10と読み替えられ、サーバ10のサーバ制御部11又は端末制御部21にて、上記で説明した端末装置20の種々の機能及び制御を実行してもよい。また、この場合、サーバ10の種々の構成が端末装置20の種々の構成としても機能してよいし、サーバ10が、端末装置20の種々の構成を有していてもよい。
上記で説明した実施形態では、サーバ10の他にロボット制御装置41を有する例を説明したが、サーバ10は、ロボット制御装置41の一部又は全部として機能してもよい。すなわち、例えば、サーバ10はロボット40を制御するロボット制御部45の一部又は全部を有していてもよいし、サーバ制御部11がロボット制御部45の一部又は全部として機能してもよい。この場合、ロボット制御装置41はサーバ10へ統合され、サーバ10が、上記で説明したロボット制御装置41の種々の機能及び制御を実行してもよい。具体的には、上記の説明におけるロボット制御装置41はサーバ10と読み替えられ、サーバ10のサーバ制御部11又はロボット制御部45にて、上記で説明したロボット制御装置41の種々の機能及び制御を実行してもよい。また、この場合、サーバ10の種々の構成がロボット制御装置41の種々の構成としても機能してよいし、サーバ10が、ロボット制御装置41の種々の構成を有していてもよい。なお、この場合、端末装置20の一部又は全部と併せて一体化されてもよい。
上記で説明した実施形態では、サーバ10の他にPLC60を有する例を説明したが、サーバ10は、PLC60の一部又は全部として機能してもよい。すなわち、例えば、サーバ10はPLC制御部61の一部又は全部を有していてもよいし、サーバ制御部11がPLC制御部61の一部又は全部として機能してもよい。この場合、PLC60はサーバ10へ統合され、サーバ10が、上記で説明したPLC60の種々の機能及び制御を実行してもよい。具体的には、上記の説明におけるPLC60はサーバ10と読み替えられ、サーバ10のサーバ制御部11又はPLC制御部61にて、上記で説明したPLC60の種々の機能及び制御を実行してもよい。また、この場合、サーバ10の種々の構成がPLC60の種々の構成としても機能してよいし、サーバ10が、PLC60の種々の構成を有していてもよい。なお、この場合、端末装置20又はロボット制御装置41のいずれかあるいは双方と併せて一体化されてもよい。
10 サーバ(11:サーバ制御部、12:記憶部、13:サーバI/F)
20 端末装置(21:端末制御部、22:端末I/F、23:入出力部)
30 作業対象部品
31、32 第1トレイ、第2トレイ
40 ロボット(42:ロボットアーム、43:カメラ、44:ロボットハンド)
41 ロボット制御装置(45:ロボット制御部)
50 外部装置
60 PLC(61:PLC制御部)
80 ネットワーク(82:アクセスポイント)
Claims (13)
- 少なくとも1つのロボット制御部と通信可能に構成される通信部と、
前記少なくとも1つのロボット制御部によって実行され、ロボットの動作を制御する複数の第1プログラムを格納する記憶部と、
前記少なくとも1つのロボット制御部と連係可能な連係制御部の要求に基づいて前記複数の第1プログラムの中から選択された少なくとも1つの第1プログラムを、前記連係制御部と連係予定の特定の少なくとも1つのロボット制御部に出力する制御部と
を備える、プログラム管理装置。 - 前記制御部は、前記連係制御部が前記特定の少なくとも1つのロボット制御部と連係するように前記連係制御部に実行させる第2プログラムを、前記第1プログラムに基づいて生成する、請求項1に記載のプログラム管理装置。
- 前記制御部は、前記第2プログラムが前記ロボットと連動する装置及び治具の少なくとも一方を制御するコマンドを含むように、前記第2プログラムを生成する、請求項2に記載のプログラム管理装置。
- 前記制御部は、前記特定の連係制御部の入出力ポートと前記特定の少なくとも1つのロボット制御部の入出力ポートとの間の対応関係を端末装置から取得し、前記対応関係に基づいて前記第2プログラムを生成する、請求項2又は3に記載のプログラム管理装置。
- 前記制御部は、前記第1プログラムがインストールされた前記特定の少なくとも1つのロボット制御部と前記連係制御部とが連係するように、前記第2プログラムを所定のタイミングで前記連係制御部にインストールする、請求項2から4までのいずれか一項に記載のプログラム管理装置。
- ユーザの入力を受け付けるインタフェースと、
少なくとも1つのロボットを制御可能な少なくとも1つのロボット制御部及び前記少なくとも1つのロボット制御部と連係可能な少なくとも1つの連係制御部と通信可能に構成される通信部と、
前記少なくとも1つのロボット制御部が実行可能な少なくとも1つの第1プログラム及び前記少なくとも1つの連係制御部が実行可能な少なくとも1つの第2プログラムを格納する記憶部と、
前記インタフェース、前記通信部及び前記記憶部に接続された制御部と
を備え、
前記制御部は、前記入力に基づき選択された、特定の少なくとも1つの第1プログラムに対応した特定の第2プログラムを、前記特定の少なくとも1つの第1プログラムを実行予定の特定の少なくとも1つのロボット制御部と連係予定の特定の連係制御部に対して出力する、
プログラム管理装置。 - ユーザの入力を受け付けるインタフェースと、
少なくとも1つのロボットを制御可能な少なくとも1つのロボット制御部及び前記少なくとも1つのロボット制御部と連係可能な少なくとも1つの連係制御部と通信可能に構成される通信部と、
前記少なくとも1つのロボット制御部が実行可能な少なくとも1つの第1プログラム及び前記少なくとも1つの連係制御部が実行可能な少なくとも1つの第2プログラムを格納する記憶部と、
前記インタフェース、前記通信部及び前記記憶部に接続された制御部と
を備え、
前記制御部は、前記入力に基づき選択された、特定の第2プログラムに対応した特定の少なくとも1つの第1プログラムを、前記特定の第2プログラムを実行予定の特定の連係制御部と連係予定の特定の少なくとも1つのロボット制御部に対して出力する、
プログラム管理装置。 - 前記制御部は、前記特定の連係制御部が前記特定の少なくとも1つのロボット制御部と連係するように前記特定の連係制御部に実行させる第2プログラムを、前記第1プログラムに基づいて生成する、請求項6又は7に記載のプログラム管理装置。
- 前記制御部は、前記第2プログラムが前記ロボットと連動する装置及び治具の少なくとも一方を制御するコマンドを含むように、前記第2プログラムを生成する、請求項8に記載のプログラム管理装置。
- 前記制御部は、前記特定の連係制御部の入出力ポートと前記特定の少なくとも1つのロボット制御部の入出力ポートとの間の対応関係を端末装置から取得し、前記対応関係に基づいて前記第2プログラムを生成する、請求項8又は9に記載のプログラム管理装置。
- 前記制御部は、前記第1プログラムがインストールされた前記特定の少なくとも1つのロボット制御部と前記特定の連係制御部とが連係するように、前記第2プログラムを所定のタイミングで前記特定の連係制御部にインストールする、請求項8から10までのいずれか一項に記載のプログラム管理装置。
- 請求項1から11までのいずれか一項に記載のプログラム管理装置と、前記ロボット制御部と、前記連係制御部とを備えるロボット制御システム。
- ロボットの動作を制御する少なくとも1つのロボット制御部によって実行される複数の第1プログラムを格納することと、
前記少なくとも1つのロボット制御部と連係可能な連係制御部によって前記複数の第1プログラムの中から選択された少なくとも1つの第1プログラムを、前記連係制御部によって前記少なくとも1つのロボット制御部から選択された前記ロボット制御部に出力することと
を含むプログラム管理方法。
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- 2022-03-08 CN CN202280019612.8A patent/CN116940448A/zh active Pending
- 2022-03-08 JP JP2023505592A patent/JPWO2022191218A1/ja active Pending
- 2022-03-08 EP EP22767172.4A patent/EP4306270A1/en active Pending
- 2022-03-08 WO PCT/JP2022/010146 patent/WO2022191218A1/ja active Application Filing
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CN116940448A (zh) | 2023-10-24 |
EP4306270A1 (en) | 2024-01-17 |
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