EP0939922A1 - Dispositif et procede permettant de commander des machines, notamment des metiers a tisser - Google Patents

Dispositif et procede permettant de commander des machines, notamment des metiers a tisser

Info

Publication number
EP0939922A1
EP0939922A1 EP98952550A EP98952550A EP0939922A1 EP 0939922 A1 EP0939922 A1 EP 0939922A1 EP 98952550 A EP98952550 A EP 98952550A EP 98952550 A EP98952550 A EP 98952550A EP 0939922 A1 EP0939922 A1 EP 0939922A1
Authority
EP
European Patent Office
Prior art keywords
devices
itl
control
address
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98952550A
Other languages
German (de)
English (en)
Inventor
Herbert Müller
Arno Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0939922A1 publication Critical patent/EP0939922A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G05B2219/20—Pc systems
    • G05B2219/26—Pc applications
    • G05B2219/2634—Loom, weaving

Definitions

  • Weaving machines and other machines generally have a central control that communicates with assemblies and / or devices that are required to operate the weaving machine.
  • Bus systems can be provided for communication between internal and external devices of the weaving machine as well as components and assemblies of the same and the weaving machine control, as has become known, for example, from DE 4238600 C2 for knitting machines.
  • a central processing unit interacts with motor control units via a bus in order to control them.
  • the motor control units are connected to the bus in parallel and are addressed via addresses.
  • CAN buses For data communication between a central control device and several subordinate participants e.g. Weft insertion devices, weft brakes, sensors and actuators are known as so-called CAN buses, which manage with three lines, namely CANH, CANL and ground.
  • CAN buses CAN stands for Control Area Network
  • the participants can receive data from the central control device, namely the weaving machine control, and return data to it. You can also communicate with each other.
  • each subscriber In order to make this possible, each subscriber must be assigned a separate address, which he recognizes as an identifier when he is to be addressed, and which he sends in order to correctly identify the sender of the transmitted data packet.
  • Looms have a large number of devices, assemblies and other elements that are connected to a CAN bus as participants. Such devices are, as mentioned above, the weft feed devices, the weft brakes, sensors or actuators. If a weaving machine is set up, the individual addresses of each participant (device) must be carefully documented so that no address is assigned twice. If changes are made, this is only possible based on the existing documentation. With a flexible configuration and changeability of the weaving machine, this represents a considerable difficulty with regard to the equipment for carrying out additional functions.
  • the control system or control method creates a possibility of integrating additional devices into the existing system without having to manually check or set them for address compatibility.
  • the devices are to be connected to the existing data bus and are automatically arranged in the system during an initialization procedure. This is achieved by individually and sequentially addressing devices that can be configured by the weaving machine control, that is to say devices with an initialization trigger line, so-called ITL devices. If they are addressed, they are assigned an individual address that is saved both on the device and on the weaving machine control.
  • the weaving machine control organizes the assignment of the addresses so that each configurable device (ITL device) receives a single address that is only assigned once and therefore only serves to address this one device.
  • additional addresses can be assigned several times (group addresses) in order to be able to address several devices with one shipment.
  • the configurable ITL devices are still without an address. You will therefore be addressed individually and in terms of hardware.
  • an additional line is used for this. If a CAN bus with the lines CANH and CANL and ground is used as the bus, at least one further line must be provided, the ITL line. This goes from the weaving machine control to everyone Devices that are arranged one behind the other in the additional line. Each device preferably has an input and an output. A switch is preferably provided between the input and the output and is open during the initialization of this device. The first signal coming from the weaving machine control can therefore only reach the device that is directly connected to the weaving machine control. It is activated and switched to initialization mode.
  • the switch After initialization, the switch is closed so that the next device in the chain receives the initialization signal and can start exchanging data with the weaving machine control. In this way, theoretically, an unlimited number of individual devices can be addressed one after the other and initialized individually.
  • the system is also open to permanently configured devices, e.g. for a dobby. These do not take part in the initialization, and the weaving machine control does not assign their addresses again.
  • the machine can be expanded at any time with additional devices and individual devices / assemblies can also be expanded or reduced without further notice; e.g. the number of weft feeders can be changed.
  • the weaving machine control checks its environment, i.e. it checks what devices are connected to the bus and assigns them to its address space.
  • the type and number of devices on the bus enable the weaving machine control system to automatically identify which functions are in operation or are operating less, which means that they can work properly after initialization. With this measure, the weaving machine control recognizes the number and functionality of existing system components, ie Actuators, sensors, devices etc. themselves. Accordingly, it also assigns addresses itself using this method.
  • Fig. 1 shows the system architecture of the control system of a weaving machine, in an extremely schematic block diagram
  • Fig. 2 is a device belonging to the system of Figure 1, in a schematic representation as a block diagram.
  • the control system 1 includes a control device 2, in the present case the weaving machine control, which is used to control several connected devices 3, 4, 5, 6.
  • the control device 2 is, for example, a computer control which has a computer module and one or more storage devices. With devices 3,
  • the control device 2 communicates via a data bus 7, which is designed as a CAN bus.
  • the CAN bus has two lines CANH, CANL.
  • two lines 24V, not shown, are provided for the operating voltage supply and the GND as ground connection.
  • the devices 3, 4, 5, 6 are components or attachments of the weaving machine to be controlled by the control device 2.
  • the devices can be sensor assemblies, actuator assemblies, adjusting devices and devices such as weft feed devices, weft brakes or the like or additional devices.
  • Some of the devices, devices 3, 4 and 5 in FIG. 1, can be configured remotely since they are connected to the ITL system.
  • the Configuration of the individual devices 3, 4 and 5 includes the assignment of a device address in order to be able to address the devices individually after initialization and to be able to identify sent data packets as being sent by the relevant devices.
  • the configurable devices 3, 4, 5 each have an initialization input 8 and an initialization output 9.
  • the initialization input 8 and the initialization output 9 comprise further connections, not shown. They are used for the serial connection of devices 3, 4, 5 with each other.
  • Devices 3, 4, 5 are connected via initialization lines ITL-Hin and ITL-Rück. The two lines ITL
  • the back and ITL back thus add two lines to the CAN bus.
  • the devices 3, 4, 5 are constructed identically to one another. Devices of the same type, e.g. Weft feed devices or different devices, i.e. Devices that perform different functions.
  • Each device contains a central processing unit CPU connected to the CAN bus 7, the CPUs of all devices 3, 4, 5, 6 being connected in parallel to the CAN bus 7.
  • the central processing unit CPU controls the operation of the respective device 3, 4, 5, 6 on the basis of the information and commands received via the CAN bus 7. If necessary, the CPU reports states, information and data back to the control device 2 via the CAN bus 7. To initialize the CPU, this is connected to the line ITL.HIN.IN according to FIG. 2, the connection going to the input connection 8a, i.e.
  • the switch 10 is located in the signal flow direction in front of a switch 10, which is arranged between the input connection 8a and the output connection, not defined in more detail.
  • the switch 10 is controlled by the CPU.
  • the switch 10 is open before the device 3 is initialized. This applies accordingly to the other devices 4, 5.
  • a resistor 11 connecting the CANH and the CANL after the device 6 ensures, in a manner known per se, that interference does not negatively influence the data transmission to the individual devices (3, 4, 5, 6).
  • the line loop (daisy chain) consisting of the ITL-HIN and ITL-RÜCK lines in addition to the CAN bus 7 supplements the CAN bus and makes it possible to use the devices 3, 4, 5 in a configuration mode of the higher-level control device 2 if required to address in sequence, to identify and to assign an address or to determine a predetermined address, the
  • the daisy chain (ITL-HIN and ITL-RÜCK) can be used as a trigger line.
  • bus As it is connected to the device according to FIG. 2, has the following lines:
  • the CAN bus and the voltage supply are routed serially over each device 3, 4, 5, 6.
  • the higher-level control device 2 recognizes the number of connected devices in turn, as will be explained in more detail later.
  • the control device 2 switches the ITL-HIN line to a high level, which reaches the CPU of the first device 3 in the chain and informs it that an initialization is now to take place.
  • the control device 2 sends a message on the CAN lines, for example the telegram 0, 128, 1, in order to announce that an initialization is taking place and that a message is now required which device has been addressed via the ITL-HIN line.
  • the ITL device 3 which has been activated by the ITL-HIN line, now responds with a device identifier, i.e. a bit string, the information about the type of
  • control device 2 If the control device 2 has received this message, it assigns a suitable address that will apply to the ITL device 3 in the future and sends it out on the CAN lines.
  • the ITL device 3 stores this address as its own
  • the subsequent device 4 receives the request signal on the ITL outward line for the initialization. This is now carried out as described above (points 1 to 4), but an address is assigned which is different from the address of the device 3.
  • control device recognizes the end of the initialization by the closed ITL line and ends the initialization. This is done by
  • ITL configurable devices all have the address 0 and can therefore be operated multiple times (including the same devices) on the bus. An individual address component is added to address 0 so that these devices can be addressed individually. Devices that cannot be configured for ITL have an address different from 0, whereby only one device can be operated with the same address.
  • the device address is only used to identify an external device during system setup. It is to be agreed and has e.g. the values 0 to 15.
  • the number in the group is used to select a group participant. It is part of the telegram data and not of the identifier (address).
  • the machine controller initializes all devices on the bus, e.g.
  • Each telegram consists of several, e.g. 8 data bytes.
  • the individual bytes have different meanings. These arise depending on the situation.
  • the request for the device type which is carried out, for example, by the control device 2 during the initialization, takes place in the direction from the machine (control device 2) to the individual device 3, 4, 5 with an identifier 0 and the data bytes 0, 128, 2 .
  • LEX devices are devices with ITL cables set up for external data communication via CAN bus; Third-party devices are other devices without an ITL line.
  • the telegram may not be earlier than a certain time after the power is on
  • the addressed device After the request for the device type has been sent, the addressed device responds by reporting its device ID. This takes place in the direction from the device to the machine, i.e. its control device 2. 400h + device address is sent as identifier. From this data, the control device 2 recognizes the device identifier, which is thus reported.
  • Device identifier defines which device it is (e.g. weft feed device, weft brake ).
  • Device uses the following telegram to inform the device of the parameters valid for further operation (group address and CAN send ID).
  • the identifier 0 from the machine i.e. to the control device 2 for the device with the telegram listed in the table below that the system construction phase has ended and that the addresses communicated in the telegram explained above are valid.
  • Devices 3, 4, 5 and 6 now set their CAN input filters (mask register) and at the latest now go into the operating state for normal operation:
  • ITL-HIN is provided, which connects all software-configurable devices 3, 4, 5 with one another.
  • the ITL-HIN line is looped through all devices 3, 4, 5, and is guided in each device 3, 4, 5 via a switch 10. This is open before initialization. By successively closing the switches, the devices 3, 4, 5 are connected in succession to the ITL signal and thereby individually activated one after the other in order to receive their individual address from the control device 2, which applies to the subsequent operation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Looms (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un système de commande (1) permettant de commander des accessoires, des actionneurs, des capteurs et autres équipements d'une machine, notamment d'un métier à tisser. Les accessoires (3, 4, 5, 6) de ce système de commande (1) sont reliés à un dispositif de commande (2) par un bus CAN (7). En plus du bus CAN (7), au moins une autre ligne ITL-HIN permet de relier entre eux tous les accessoires (3, 4, 5) configurables par logiciel. La ligne ITL-HIN traverse tous les accessoires (3, 4, 5) en passant, dans chaque accessoire (3, 4, 5), par un commutateur (10) qui est ouvert avant l'initialisation. Par une fermeture successive des commutateurs, les accessoires (3, 4, 5) sont reliés les uns après les autres au signal ITL et ainsi activés les uns après les autres afin de se voir attribuer par le dispositif de commande (2) leur adresse individuelle qui leur sera utile lors du fonctionnement ultérieur.
EP98952550A 1997-09-13 1998-09-08 Dispositif et procede permettant de commander des machines, notamment des metiers a tisser Withdrawn EP0939922A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19740306 1997-09-13
DE1997140306 DE19740306A1 (de) 1997-09-13 1997-09-13 Erweiterter CAN-Bus zur Steuerung einer Webmaschine
PCT/DE1998/002653 WO1999014643A1 (fr) 1997-09-13 1998-09-08 Dispositif et procede permettant de commander des machines, notamment des metiers a tisser

Publications (1)

Publication Number Publication Date
EP0939922A1 true EP0939922A1 (fr) 1999-09-08

Family

ID=7842249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98952550A Withdrawn EP0939922A1 (fr) 1997-09-13 1998-09-08 Dispositif et procede permettant de commander des machines, notamment des metiers a tisser

Country Status (4)

Country Link
EP (1) EP0939922A1 (fr)
JP (1) JP2000506660A (fr)
DE (1) DE19740306A1 (fr)
WO (1) WO1999014643A1 (fr)

Cited By (1)

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GB2473916A (en) * 2009-09-23 2011-03-30 Ebm Papst Uk Ltd Method of Operating a Control System preferably for a Fan System

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Also Published As

Publication number Publication date
JP2000506660A (ja) 2000-05-30
DE19740306A1 (de) 1999-03-18
WO1999014643A1 (fr) 1999-03-25

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