WO1999024881A1 - Control system using sequence control apparatus, sequence control apparatus, and method of controlling transmission and reception of signals by control system using sequence control apparatus - Google Patents
Control system using sequence control apparatus, sequence control apparatus, and method of controlling transmission and reception of signals by control system using sequence control apparatus Download PDFInfo
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- WO1999024881A1 WO1999024881A1 PCT/JP1997/004071 JP9704071W WO9924881A1 WO 1999024881 A1 WO1999024881 A1 WO 1999024881A1 JP 9704071 W JP9704071 W JP 9704071W WO 9924881 A1 WO9924881 A1 WO 9924881A1
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- control device
- sequence control
- information
- sequence
- model
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 108
- 238000012423 maintenance Methods 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000015654 memory Effects 0.000 claims description 125
- 238000004891 communication Methods 0.000 description 23
- 230000008859 change Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 239000013256 coordination polymer Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011423 initialization method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
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- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- 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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0426—Programming the control sequence
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- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31087—Transmission device between workcell and central control
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32159—Each hardware unit together with its software forms one object
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/34—Director, elements to supervisory
- G05B2219/34418—Scheduler for sequential control, task planning, control sequence
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/36—Nc in input of data, input key till input tape
- G05B2219/36309—Program has different modules, each with own load program
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Definitions
- the present invention relates to a production system, a sequence control device for controlling the production device, and maintenance of the system.
- a control system using a sequence control device including a management program for monitoring, a sequence control device, and a control system using the sequence control device.
- FIG. 9 shows a conventional example in which a sequence controller (also referred to as a sequencer) is accessed via a network.
- a sequence controller also referred to as a sequencer
- the sequence controller access driver 903 provides an access interface function 902 depending on a specific programming language for mainly referring to the memory information of the sequence controller 905.
- FIG. 10 shows a conventional example described in Japanese Patent Application Laid-Open No. Hei 8-2-11191, which attempts to absorb differences between models.
- the production apparatus group 1007 arranged on the production line is controlled by sequence controllers 1006 of different types.
- the sequence controller 1006 communicates with the network 1005 via the 1/0 circuit 104, the input / output information of the sequence controller 1006, and the ON / OFF of the internal switch. It is connected to a contact information file 1003 that can store OFF state information.
- Instructions for reading or writing from the input / output device 1001, such as a keyboard and a display device, to the sequence controller 1006 are executed through a central processing computer (also referred to as CPU) 1002.
- a read command is issued from the input / output device 1001 in S111.
- the central processing unit 1002 determines the sequence control device 1006 to be read out in one day.
- the I / O circuit 1004 reads data from the sequence control device 106 by a reading method depending on the model of the sequence control device 106 to be read. Is read.
- the 1/0 circuit 1004 converts the data into a file format defined in common to the models, and stores the read data in the contact information file 1003.
- a write instruction is issued from the input / output device 1001 in S 1 201.
- the target sequence control device 106 is determined. Subsequently, in S123, the I / O circuit 104 reads the write data from the contact information file 1003. Further, the I / O circuit 1004 in S 1 204 uses the method dependent on the model of the sequence controller 1 0 6 determined in S 1 0 2, and the sequence controller 1 0 0 Write data to 6.
- the access program via the network 904 corresponds to the entire sequence of the production line.
- Knowledge of the control command pattern of the control device 905 and the initialization method up to the issuance of the command pattern is required, making the creation of an access program extremely complicated and causing a system failure.
- the conversion of the data structure depending on the type of the sequence control device 106 is performed by the input / output device 1001, the central processing console 1002, All the production management hosts that have the contact information file 1003 and the I / O circuit 1004 will recognize them.To create programs on the production management host, knowledge of the data structure of all models is required. Therefore, there was a problem that the development efficiency deteriorated. Also, the sequence controller 1 There was a problem that only contact information of 06 could be managed, for example, management information on hardware could not be collected. Disclosure of the invention
- the present invention has been made to solve such a problem, and it is intended to absorb a difference in a command pattern between models by an internal processing of an object and to perform an initialization processing by a communication mechanism between networks.
- the aim is to improve the development efficiency of management programs used for production line monitoring / maintenance systems, etc., and to optimize computing resources.
- the control system in a control system using a sequence control device, includes a plurality of instructions for detecting or changing information of the sequence control device and the production device in accordance with a management program, and related data.
- the control system uses a sequence controller with objects.
- the model of the cans controller was provided with instructions for starting / stopping the sequence controller.
- the object of the control system using the sequence controller is a model having information common to a plurality of units constituting the sequence controller.
- the object of the control system using the sequence controller is a model of the memory connected to the I / O unit of the sequence controller to which the production device is connected.
- the memory connected to the I / O unit of the sequence controller is monitored. It was decided to have a table of objects consisting of the model of the production equipment connected to the I / O unit in the object that was de-delified.
- the object of the control system using the sequence control device is a model having information common to a plurality of memories of the sequence control device.
- the object of the control system using the sequence control device is used as a model of the production device, and the model has the status information of the production device and the information of the memory connected to the I / O unit.
- an object consisting of a model of a sequence control device having an instruction regarding the start / stop of the sequence control device in a control system using the sequence control device an object consisting of a model of a unit of the sequence control device, and a production device.
- An object consisting of a model of a production device having state information and information of a memory connected to an I / O unit is given an identifier that is unique within the network.
- control system using the sequence controller has a means for transmitting and receiving commands and information between the management program and the object.
- an object comprising a plurality of instructions for detecting or changing information of the sequence control device and the production device and related data is provided.
- the object is a model of the sequence control device, and has an instruction related to start / stop of the sequence control device.
- the object is a model of a unit constituting the sequence control device, and the object is connected to the production device.
- the object used was a sequence controller that had an object consisting of a model of the production equipment. Control system.
- a sequence control device for controlling a production device is provided with an object composed of a plurality of instructions for accepting a maintenance / management instruction to detect or change information and related data.
- the object of the sequence control device is a model of the sequence control device, which has an instruction regarding start / stop of the sequence control device, and is composed of a model of a unit constituting the sequence control device, and is connected to the production device. It consisted of a model of the memory connected to the unit, and a model of the production equipment.
- an instruction message is created by converting an instruction issued from the management program, an instruction is transmitted to an object by the instruction message, and a result processed by the object is converted to create an information message. Then, a transmission / reception control method for a control system using a sequence control device that transmits information to a management program by using this information message was adopted.
- the above transmission / reception control method is a method in which an identifier that is unique in the network is set, and the command / information is transmitted / received between the management program and the object using the identifier.
- FIG. 1 is a configuration diagram of a basic object of a sequence control device according to an embodiment of the present invention.
- Fig. 2 the upper figure shows the specific hardware configuration, and the lower figure shows a specific generated object diagram in that case.
- FIG. 3 is a detailed view of the input memory object and the production equipment object of FIG.
- FIG. 4 is a diagram showing an operation sequence of an input memory object and a production device object according to an embodiment of the present invention.
- FIG. 5 is a diagram of an embodiment of an object configuration diagram when accessing a sequence control device via a network.
- Fig. 6 is a conceptual diagram of the control system when the objects are concentrated in one place (centralized system environment).
- FIG. 5 is a conceptual diagram of a control system in a case where an object group is distributed for each sequence control device (distributed system environment).
- FIG. 8 is a flow diagram of the process of transmitting a command from a management program to an object.
- FIG. 9 is a diagram showing a conventional example.
- FIG. 10 is a view showing the concept of a conventional example: Japanese Patent Application Laid-Open No. Hei 8-2-11191.
- FIG. 11 is a diagram showing a flow of a reading process from an input / output device in a conventional example: Japanese Patent Laid-Open No. Hei 8-2-1911.
- FIG. 12 is a flowchart of a conventional example: a writing process from an input / output device in Japanese Patent Application Laid-Open No. Hei 8-2-1911. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a basic class configuration of an object of a sequence control device according to an embodiment of the present invention.
- the horizontal solid line between classes indicates that objects derived from the left class manage objects derived from the right class.
- a vertical solid line between classes indicates that classes below the solid line inherit classes above the solid line.
- the dotted lines between the classes mean that the object references (reference buttons) are held as internal information.
- sequence controllers are sequence controller class 101, hardware air class 102, CPU unit class 103, power supply unit class 104, communication unit class 105, I / O unit class 100 6, Special unit class 107, memory class 108, input memory class 109, output memory class 110, temporary storage memory class 111, evening image memory class 112, counting memory It consists of 16 classes, class 1 13, data memory class 1 14, shared memory class 1 15, and production equipment class 1 16.
- the sequence controller class 101 represents the entire sequence controller.
- the sequence controller can be functionally divided into two components: hardware and memory. Therefore, the sequence control device class 101 manages the object group generated from the hardware class 102 and the object group generated from the memory class 108, and starts operation of the entire device. Time, installation date, etc. are stored as information.
- the sequence control device class 101 manages, for example, the following information. (Hereinafter, the outline shows the specific contents of the management information.) Management information: Installation date ⁇ ⁇ ⁇ ⁇ Overview: Date and time when the sequence controller was installed. Management information: Operation start date ⁇ ⁇ ⁇ Overview: Date and time when the sequence controller started operation.
- Management information Operation status ⁇ ⁇ ⁇ Overview: Operation status of the sequence controller.
- Memory object management table ' ⁇ ⁇ Overview An object group generated from a class that models the memory used when the sequence controller executes sequence control. Further, the sequence control device class 101 provides, for example, the following instructions (methods).
- the hardware class 102 is a common class of hardware components of the sequence control device.
- the CPU unit class 103, the power supply unit class 104, the communication unit class 105, the I / O unit class 106, and the special unit class 107 are all hardware classes. Is inherited.
- the hardware class 102 manages information such as identifiers (names), manufacturer names, and model codes.
- the hardware class 102 manages the following information, for example. Management information: Identification name ⁇ -Outline: ⁇ book name attached to the due date object.
- Installation date ⁇ ⁇ Overview Date and time when the hardware was installed.
- Management information Operation start date • Overview: Date and time when the hardware started operation.
- Management information Manufacturer name ⁇ ⁇ ⁇ ⁇ 'Overview: Hardware manufacturer name.
- Management information Contact information at the time of failure ⁇
- Outline Contact information at the time of failure (telephone number, etc.)
- Management information Version number ⁇
- Outline Version number within the hardware manufacturer.
- Serial number ⁇ ⁇ ⁇ ⁇ 'Summary Hardware manufacturer's manufacturing identification number.
- Last failed unit name Overview Last failed hardware unit name.
- Management information Date and time of last failure ⁇ ⁇ ⁇ ⁇ Overview: Date and time of last failure.
- Management information Total operating time ⁇ ⁇ ⁇ ⁇ Overview: Total operating time of hardware.
- the hardware class 102 provides, for example, the following instructions (methods).
- Command Inquiry of maintenance information ⁇ ⁇ ⁇ Operation: Return information required for maintenance.
- Command Product information inquiry (common to hardware)
- ⁇ ⁇ ⁇ Operation Returns the name of the manufacturer and general information at the product catalog entry level.
- Command Change identifier ⁇ ⁇ ⁇ Action: Executes the change of the logical name given to the object.
- Command Operation start date inquiry ⁇ ⁇ ⁇ Operation: Return the operation start date and time.
- Command Operation status inquiry ⁇ ⁇ ⁇ Operation: Returns the current operation status.
- the CPU unit class 103 models a control execution hard-drive component that executes sequence control.
- the CPU unit class 103 manages the following information, for example.
- Management information System ROM version ⁇ ⁇ ⁇ ⁇ Overview: The version number of the system ROM for actually performing sequence control in the CPU unit.
- Management information Number of input points used ⁇ ⁇ ⁇ ⁇ Overview: Number of input points currently used (input memory used number).
- Management information Number of output points used ⁇ ⁇ ⁇ ⁇ Overview: Number of output points currently used (number of output memories used).
- Management information Whether output status values can be set ⁇ ⁇ ⁇ ⁇ Overview: Indicates whether the status of the device connected to the output unit is normally reflected in the output memory of the CPU.
- Management information Availability of input status value setting ⁇ ⁇ ⁇ ⁇ Overview: Connected to input unit Indicates whether the status of the specified device is normally reflected in the input memory of CPu.
- CPU unit class 103 provides, for example, the following instructions (methods).
- the power supply unit class 104 models the power supply hardware unit of the sequence control device.
- the power supply unit class 104 manages the following information, for example. Management information: Power supply used ⁇ ⁇ ⁇ Overview: Used power capacity.
- the power supply unit class 104 provides, for example, the following instructions (methods).
- the communication unit class 105 models a communication unit for the sequence control device to communicate with the outside. For example, the following information is managed.
- Communication type ' ⁇ ' Overview Communication protocol of the data link layer used.
- Connection cable type ' ⁇ ' Overview The type of cable (optical, coaxial, etc.) used in the network.
- Management information Maximum number of nodes ' ⁇ ' Overview: Maximum number of nodes that can be connected to the network.
- Management information Maximum network length ⁇ ⁇ ⁇ Overview: Total extension distance.
- Station distinction ⁇ ⁇ ⁇ Overview Role in the network (Depending on the type of network, there is a distinction between a local station and a local station).
- Shared memory information ⁇ ⁇ ⁇ Overview: Information such as the total number of points to support shared memory in the network and points that can be assigned to each station.
- the communication unit class 105 provides, for example, the following instructions (methods).
- the I / O unit class 106 is a hardware unit required to connect the production equipment to the sequence controller. Unit and output unit).
- the I / O unit class 106 manages the following information, for example. Management information: Input / output format ⁇ ⁇ ⁇ Overview: Input format (AC / DC, etc.) and output format (contact, transistor, etc.).
- Management information Maximum number of I / O points' ⁇ ⁇ Overview: Maximum number of I / O points that can be connected to the I / O unit.
- Management information Number of input / output points currently used ⁇ ⁇ ⁇ Overview: Current number of used points.
- Input current ⁇ ⁇ ⁇ Overview Input current value specified by the product.
- Management information Maximum load current (output) ⁇ ⁇ ⁇ Overview: Maximum load current value of the product standard.
- Input response time ⁇ ⁇ ⁇ ⁇ Overview Input response time (ON to 0FF,
- Output response time ⁇ ⁇ ⁇ ⁇ Overview Output response time (from ON to OFF,
- I / O unit class 106 provides, for example, the following instructions (methods).
- the special unit class 107 is a class corresponding to all hardware units other than the CPU unit, the power unit, the communication unit, and the I / unit. Special units differ in the functions employed by the system to which sequence control is applied. Since they are diversified, general-purpose classes are not used here. Information and instructions (methods) to be managed are classified according to the functions. Definition is required.
- the memory class 108 is a common class of computational resources used when the sequence controller executes sequence control. In other words, input memory class 109, output memory class 110, temporary storage memory class 111, evening memory class 112, countdown memory class 113, data memory class 114, shared All memory classes 115 inherit the memory class 108.
- the memory class 108 manages the following information, for example.
- Management information Memory type ' ⁇ ⁇ ⁇ Overview: The type of memory information held by the object.
- Data type ⁇ ⁇ 'Overview Data type of memory information such as bit information and byte information.
- Management information Maximum points ⁇ ⁇ ⁇ ⁇ Overview: Maximum allowable points for each memory.
- Management information Number of points used ⁇ ⁇ ⁇ Overview: Number of memory points currently used.
- memory class 108 provides, for example, the following instructions (methods).
- the input memory class 109 manages an input value or a state of a production device connected to the input unit.
- the input memory class 109 manages the following information, for example.
- Management information Memory number ⁇ ⁇ ⁇ ⁇ Overview: Address number that holds the input value or status of the production equipment connected to the input unit.
- Management information Value ⁇ ⁇ , Overview: Input value or status value.
- Production equipment object management table ' ⁇ ' Outline A table that manages reference information of objects corresponding to the production equipment connected to each memory address. Objects are created from production equipment class 1 16.
- the input memory class 109 provides, for example, the following instructions (methods).
- the output memory class 110 manages the output value or state of the production equipment connected to the output unit.
- the output memory class 110 manages the following information, for example.
- Management information Memory number ' ⁇ ' Overview: Address number that holds the input value or status of the production equipment connected to the output unit.
- Management information Value ⁇ ⁇ ⁇ Overview: Output value or status value.
- Production equipment object management table '*' Outline A table that manages reference information of objects corresponding to the production equipment connected to each memory address. Objects are produced Generated from device class 1 16
- output memory class 110 provides, for example, the following instructions (methods).
- Temporary storage memory class 1 1 1, evening memory class 1 1 2, county memory class 1 1 3, data memory class 1 1 4, and shared memory class 1 1 5 retain their values according to their intended use The value is used by the sequence controller to perform the sequence control.
- Management information Value ⁇ ⁇ ⁇ Overview: Value to be retained.
- Logical name ' ⁇ ' Overview Name used when recognizing with a logical name, not an address number.
- temporary memory class 1 1 1, timer 1 memory class 1 1 2, counter memory class 1 1 3, data memory class 1 1 4, and shared memory class 1 1 5 (Method).
- the production device class 116 models the production device connected to the I / O unit of the sequence control device.
- the production equipment class 1 16 manages the following information, for example. Management information: Value ⁇ ⁇ ⁇ Overview: State value or value of production equipment.
- Logical name ⁇ ⁇ ⁇ Overview Logical name that identifies the production equipment.
- Management information Device distinction ⁇ ⁇ ⁇ Overview: Input / output or other device distinction.
- Management information Address number ⁇ ⁇ ⁇ ⁇ Overview: The address number of the I / O memory to which the production equipment is connected and the I / O value ⁇ or status is reflected.
- production equipment class 1 16 provides, for example, the following instructions:
- Fig. 2 shows an application of the basic class of the object shown in Fig. 1 to a specific sequence controller, showing the image of the applied sequence controller and the objects generated in that case. I have.
- the upper part of Fig. 2 is an image diagram of the sequence controller.
- the sequence controller consists of a power supply unit 201, a CPU unit 202, a communication unit 203, and an output unit 204.
- the lamp unit 206 and the switch unit 207 which are composed of the hardware units of the input unit 205 and which are subject to sequence control, are connected to the output unit 204 or the input unit. Connected to 205.
- FIG. 2 shows the object configuration generated in the specific example system shown in the upper part of FIG.
- sequence control object 208 (generating source class is sequence controller class 101) corresponding to the entire sequence controller is sequenced. —Manage all objects related to the can controller.
- the CPU unit object 209 corresponding to the CPU unit 202 (the source class is CPU unit class 103) and the power unit object 221 corresponding to the power unit 201 0 (source class is power unit class 104), communication unit object 203 corresponding to communication unit 203 (source class is communication unit class 105), input unit I / O unit object 2 1 2 corresponding to 205 (source class is I / O unit class 106), I / O unit object 2 13 corresponding to output unit 204 (source class) Generates five objects of the I / O unit class 106).
- the objects 209 to 21 corresponding to the hardware unit are managed by a hard object management table 225 in the sequence control device object.
- the input memory object 2 14 corresponding to the input memory (input memory class is 109) and the output memory object 2 15 corresponding to the output memory (output class is Memory class 110), temporary storage memory object 2116 corresponding to temporary storage memory (generation class is temporary storage memory class 1 1 1), evening memory object corresponding to evening memory 2 1 7 (Generation source class is memory class 1 1 2), counter memory object 2 1 8 corresponding to counting memory 2 (generation class is counting memory class 1 1 3), data memory
- the memory object 2 19 (generation class is data memory class 114) and the shared memory object 2 20 corresponding to shared memory (generation class is Seven objects of the shared memory class 1 15) are created.
- Objects 2 14 to 220 corresponding to the memory are stored in the sequence controller object. It is managed in the object management table 222.
- an object corresponding to the production device is generated.
- the production equipment object 221 corresponding to the switch 207 (logical name: switch 1) (the production source class is the production equipment class 1 16), and the switch 207 Production equipment object 2 2 2 (Logical name: Switch 2) (Generation source class is Production equipment class 1 16), Production equipment object 2 2 3 (Logical name: Lamp) corresponding to lamp 206 1) (Generation source class is production equipment class 1 16) and production equipment object 2 2 4 corresponding to lamp 206 (logical name: lamp 2) (Generation source class is production equipment class 1 1 6).
- the production equipment objects 221 to 224 are managed by the production equipment object management table 227 in the input memory object 214 or the output memory object 215.
- FIG. 3 describes in detail the input memory object 214 and the production equipment objects 221, 22 of FIG. The outline of the operation will be described with reference to this figure.
- the input memory object 214, the production equipment object 221 and the production equipment object 222 have management information 301, management information 302, and management information 303, respectively.
- switch 1 is connected to the input unit, and the input memory class 1 09 is provided by specifying the address number 0 of the input memory that reflects the status.
- This is a method for issuing a reference information inquiry command for the production equipment object.
- Another method is to issue a status inquiry command provided by the production equipment class 1 16 to the production equipment object 2 21.
- an instruction provided by each class it is possible to detect or change information of the sequence control device and the production device, and to make a difference between the sequence control devices in a hardware manner and an access driver between the devices. Management program developers do not need to be aware of differences in faces.
- Figure 4 shows the procedure in that case.
- the address number of the held information 303 of the production equipment object 222 is changed from 1 to 2.
- the link information of the production equipment object corresponding to the address number 1 stored in the production equipment object management table 227 of the input memory object 211 is deleted.
- all the information corresponding to the address number 1 of the input memory object 2 14 held information 301 is deleted, and new information corresponding to the address number 2 is added in S404.
- the link information corresponding to the address number 2 of the production apparatus object management table 227 is newly set.
- Embodiment 1 described above is in an environment closed to the sequence control device.
- each object when a plurality of sequence controllers are connected on a network, each object has a unique identifier in the network and a command is issued from the management program to the object. It is possible to issue
- the method of arranging the object groups corresponding to each sequence controller includes a method of concentrating in one place (centralized system environment) and one or more devices. There is a method (distributed system environment) of distributing each sequence control device.
- Fig. 5 shows the object configuration when multiple sequence controllers are connected to the network in the hardware configuration shown in Fig. 2.
- the sequence controller is a sequence controller object 501, a CPU unit object 502, a power supply unit object 503, and a communication unit object 5 that have a unique identifier in the network.
- FIG. 6 shows an embodiment of a centralized system environment, in which all objects are arranged on a device on which a management program operates.
- reference numeral 600 denotes a management program.
- An object group 602 corresponding to the sequence control device 604 and an object group 603 corresponding to the sequence control device 605 exist on a device such as a personal computer where the management program 601 exists. .
- the sequence controllers 604 and 605 are different models.
- the CPU unit class in the object group 602 is specified by specifying the identifier of the CPU unit object. It issues a use status inquiry command to be provided, identifies the target CPU unit object in the 602 by this identifier, and performs sequence control using a macro according to the model in the object according to this instruction.
- the CPU unit of the device 604 is accessed, the input / output point information is detected, and the information is transmitted to the management program 601.
- an instruction for use status is issued by specifying the identifier of the sequence controller object without directly specifying the identifier of the CPU unit object, the CPU unit object can be created inside the sequence controller object. It can also be acquired and executed.
- a format message (network) corresponding to each sequence control device remains on the network as before.
- a message corresponding to 604 flows to 604, and a message corresponding to 605 flows to the sequence control device 605.
- FIG. 7 shows an embodiment of a distributed system environment.
- reference numeral 701 denotes a management program, which exists on a device 703 such as a personal computer.
- a distributed system management program 702 exists on the device 703.
- Reference numeral 709 denotes a sequence controller, and an object group 706 and a distributed system management program 704 corresponding to the sequence controller 709 are arranged.
- the sequence controller 709 is connected via a network to the device 703 in which the management program 701 is present.
- Reference numeral 7110 denotes a sequence control device from which a group of objects cannot be arranged, for example, another manufacturer.
- Reference numeral 707 denotes an object group corresponding to the sequence controller 710
- reference numeral 705 denotes a distributed system management program, both of which are provided on a device 708 such as a personal computer connected to the sequence controller 710. Are located.
- the device 708 is connected via a network to the device 703 where the management program 701 exists.
- step S801 an instruction is issued from the management program 701, specifying the identifier of the CPU unit object.
- step S 802 the distributed system management program 702 receives this command and creates a command message (data in which the command is converted into a format that can flow on a network) by converting the command into a communication format. At 0 3 A command message is transmitted.
- the conversion to the communication format is to convert the instructions and information into a format that can flow on the network.
- the management system-side distributed system management program 702 responds to the network identifier of the device (sequence control device 709 or device 708) where the object identifier and the object exist. It has a table, and its address is added to the instruction, the address of the device 703 on the network is added to the instruction, and an error detection code is added.
- the system management programs 704 and 705 detect the address on the network of the device 703 where the management program exists from the instruction message, add it to the information, and add an error detection code. And so on.
- the instruction message is received by the distributed system management program 704 using the address of the sequence control device 709 as a mark in step S804, and is returned to the instruction to the object in step S805. Thereafter, in step S806, the CPU unit object having the same identifier in the object group 706 executes the instruction, and detects the input / output point information.
- This input / output point information is created in step S807 by the distributed system management program 704, which converts the information into a communication format into an information message (a format in which the information can be transmitted over a network).
- the information message is transmitted, in step S809, the information message is received by the distributed system management program 702, and in step S810, the information message is returned to the information.
- step S811 the information is passed to the management program 701.
- the management program 701. similarly to the case of the centralized system environment, it is also possible to issue the usage status inquiry command by specifying the sequence controller object in the distributed system environment and process it.
- an identifier is sent. It is also possible to use a method in which only the corresponding object is operated by, or a method in which the identifier is transmitted to all objects first, the relevant object is determined, and then the command message is transmitted.
- the distributed system By operating the management program 705 and the CPU unit object, it is possible to transmit the input / output point information to the detection management program in the same manner as when obtaining the CPU input / output information of the sequence control device 709. Note that each object in the object group 707 needs to incorporate an access library for accessing the sequence controller.
- the management program creator need only be aware of object identifiers, whether in a centralized system environment or a distributed system environment, and does not care about the type of sequence control device or the connection form of the model on the network. You do not need to know.
- the unique identifier in the network for each object is, for example, a combination of the serial number of the sequence controller and an identifier for identifying each object in the group of objects corresponding to the sequence controller. Can be realized. Industrial applicability
- the production system and the sequence control device are monitored by the control system and the sequence control device using the sequence control device according to the present invention, and the transmission / reception control method of the control system using the sequence control device. It is easy to maintain, and is particularly suitable for use in managing control of product assembly lines ⁇ product processing lines using a sequence controller.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9915816A GB2335771A (en) | 1997-11-10 | 1997-11-10 | Control system using sequence control apparatus,sequence control apparatus,and method of controlling transmission and reception of signals by control system |
DE19782231T DE19782231T1 (en) | 1997-11-10 | 1997-11-10 | Control system using a programmable logic controller, programmable logic controller, and transmit / receive control methods of the control system using a programmable logic controller |
PCT/JP1997/004071 WO1999024881A1 (en) | 1997-11-10 | 1997-11-10 | Control system using sequence control apparatus, sequence control apparatus, and method of controlling transmission and reception of signals by control system using sequence control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1997/004071 WO1999024881A1 (en) | 1997-11-10 | 1997-11-10 | Control system using sequence control apparatus, sequence control apparatus, and method of controlling transmission and reception of signals by control system using sequence control apparatus |
Publications (1)
Publication Number | Publication Date |
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WO1999024881A1 true WO1999024881A1 (en) | 1999-05-20 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1997/004071 WO1999024881A1 (en) | 1997-11-10 | 1997-11-10 | Control system using sequence control apparatus, sequence control apparatus, and method of controlling transmission and reception of signals by control system using sequence control apparatus |
Country Status (3)
Country | Link |
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DE (1) | DE19782231T1 (en) |
GB (1) | GB2335771A (en) |
WO (1) | WO1999024881A1 (en) |
Families Citing this family (1)
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DE10052177A1 (en) * | 2000-10-20 | 2002-08-29 | Siemens Production & Logistics | Method for determining technical data of a plurality of function modules of the same type in a device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6236938A (en) * | 1985-08-09 | 1987-02-17 | Kao Corp | Communication control equipment for local area network |
JPS62154102A (en) * | 1985-12-27 | 1987-07-09 | Fuji Electric Co Ltd | Program writer |
JPH03204006A (en) * | 1989-12-29 | 1991-09-05 | Matsushita Electric Works Ltd | Communication system for programmable controller |
JPH03217905A (en) * | 1990-01-24 | 1991-09-25 | Fuji Electric Co Ltd | Data transfer method between programmable controllers |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS623693A (en) * | 1985-06-28 | 1987-01-09 | 株式会社東芝 | Shielding plug device for fast breeder reactor |
JPH07101176B2 (en) * | 1985-07-12 | 1995-11-01 | 日本電装株式会社 | Vibration type angular velocity detector |
-
1997
- 1997-11-10 DE DE19782231T patent/DE19782231T1/en not_active Withdrawn
- 1997-11-10 WO PCT/JP1997/004071 patent/WO1999024881A1/en active Application Filing
- 1997-11-10 GB GB9915816A patent/GB2335771A/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6236938A (en) * | 1985-08-09 | 1987-02-17 | Kao Corp | Communication control equipment for local area network |
JPS62154102A (en) * | 1985-12-27 | 1987-07-09 | Fuji Electric Co Ltd | Program writer |
JPH03204006A (en) * | 1989-12-29 | 1991-09-05 | Matsushita Electric Works Ltd | Communication system for programmable controller |
JPH03217905A (en) * | 1990-01-24 | 1991-09-25 | Fuji Electric Co Ltd | Data transfer method between programmable controllers |
Also Published As
Publication number | Publication date |
---|---|
DE19782231T1 (en) | 1999-11-25 |
GB9915816D0 (en) | 1999-09-08 |
GB2335771A (en) | 1999-09-29 |
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