Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Reexamination Certificate
2000-05-18
2003-06-03
Nerbun, Peter (Department: 3741)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
Reexamination Certificate
active
06574526
ABSTRACT:
BACKGROUND
The present invention concerns a procedure for the control of a component of a textile machine having a multiplicity of adjacent work-stations and concerns also an apparatus for the carrying out of this procedure.
In the field of modern textile machines, for the control of the complex operations, it is customary to provide components at each work-station, which are controlled with the aid of individual control devices, which maintain communication with a central control apparatus through a bus system (EP 0 385 530 A1). When such a system is put to use, the problem arises of creating a secure and trouble free communication between the central control apparatus and the individual control devices. This is necessary, in order that each individual control device is specifically regulated, and by means of each individual station, independent of the others, complex procedures can be carried out in coaction with the central control apparatus.
In the thought of the present invention, under the concept of “Component” is to be understood that apparatus, which is controllable and thereby can influence the final state of a product in a varying manner. It is self explanatory, that in accord with the kind of a textile machine, these components can be of different kinds. However, even in textile machines of similar types, the components can be designed in different ways, which is dependent on the special construction of the machine and the differing degree of automization.
SUMMARY OF THE INVENTION
Thus, a purpose of the present invention is to create a simple procedure and an apparatus, with which the components at individual work-stations can be controlled in a straightforward and precise manner. Additional objects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.
This purpose will be achieved, in accord with the invention, by the features of the invention wherein each component at the work-stations having an individual control device is marked by a default address and is connected to a bus-system which is connected to a central control apparatus, and for this component a recognition phase, in an optional sequence is initialized, in the course of which, the said default address is converted to a component-specific address. By means of this procedure, each individual control device, in a simple and secure manner will be assigned an individual, component-specific address.
The term “component-specific” is to be understood, in the concept of the present invention, as the special assignment of a certain component to a specific work-station. If this work-station possesses several components, then, each component will receive its own individual component-specific address.
During the installation and the connecting of a component, under certain circumstances, other data must be exchanged than is the case during the normal course of operation. On this account, for such an installation, in the central control apparatus, a special program, that is, a specific programming mode, i.e. exchange mode, is activated.
If, at any point in time, several components are exchanged, then this can be carried out with no effect on the addressing which is to take place later wherein an initialization phase is initialized, in the course of which the component-specific addresses, in combination with the individual control devices connected to the central control apparatus, then revert to the given default address, before the recognition phase in the optional sequence, is initialized for the components which are in communication with the central control apparatus. After the assignment of a default address, all of the components assigned to the central control apparatus are controllingly isolated from the central control apparatus, so that the components can again be connected with the central control apparatus in the specified sequence and the recognition phase initialized, in the course of which the default address of the newly entered components are converted into corresponding component-specific addresses, and simultaneously, in each case, the next sequential component is controllingly in communication with the central control apparatus for the carrying out of its recognition phase. Since the recognition phase is made with the issuance of component-specific addresses, only in connection with the work associated with the exchange, the addressing can be carried in a simple manner and without interruption which normally occurs during installation work.
By the use of a development wherein following the exchange of an individual component, the component-specific address of that removed component is assigned to a replacing component, it is not necessary, upon the exchange of only a single component, to carry out the assignment of component-specific addresses to all the components communicating with the central control apparatus.
Advantageously, the component-specific addresses have been determined in such a manner, i.e., by relative location of the component, that they enable a saving in time in both assembly and initialization.
So that the central control apparatus equipment can be checked, even before the start of the inclusion of a component, as to whether or not, besides the component which is to be installed, other components await installation, it is of advantage to initiate the recognition phase even before the first of the components assigned to a central control apparatus is connected to a bus system.
In order to exclude an erroneous connection of components, an embodiment of the invention provides information as to in what sequence the individual components should be connected with the bus-system. For example, the central control apparatus, by means of signal-output, may designate each work-station, at which the next component is to be connected to the bus system.
So that, for instance, a component can be tested after its connection to determine if the connection of the component has been executed without fault, it is of advantage, if the recognition phase for a further component is delayed in its initiation.
The recognition phase can be accomplished and carried out in different ways, for instance in accord with an improvement of the invented procedure by the conversion of the default address into an initializing address, which, in turn, is to be converted to the final component-specific address.
In a more practical manner, the recognition phase may be released by the connection of a component onto the bus-system, or by the activation of an element or circuit included for this purpose, the corresponding component is provided with the control voltage or a release signal is given for this purpose.
If it has been determined by a read-release of the central control apparatus, that a component-specific address, or a default address is lacking, then, in an advantageous embodiment of the invented procedure, the corresponding component is registered as being absent.
So that the person, who has instigated the recognition phase, is made aware as to whether an effective execution of the conversion of the initialization address into a component-specific address has been carried out or not, in a further development of the invented procedure, a display of the successful completion of this conversion is provided.
In order that disturbances, which can occur for many reasons, are set aside at an early point, that is, avoiding ahead of time the damages caused by such disturbances, another advantageous development of the invention provides that upon lack of an answer to a transmitted read-request from the central control apparatus, after a specified time:
a sending of the read-request to the corresponding individual control apparatus is carried out, and/or
the individual control device stops the component assigned to it, and/or
the component-specific address of the corresponding individual control device is retrograded to a default address, and/or
a fault alarm will be released.
Such a procedu
Gaukler Jürgen
Maleck Mario
Dority & Manning
Nerbun Peter
Rieter Ingolstadt Spinnereimaschinenbau AG
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