Patent Grant
9342296
This application claims priority of European application No. 06012060.7 EP filed Jun. 12, 2006, which is incorporated by reference herein in its entirety.
The invention relates to a method and a system allowing the use of at least one resource of a first automation system in at least one second automation system, whereby the resource is made available by the first automation system and an identification characteristic is used for the unique identification of the resource in the at least second automation system.
A method or system of such a type is employed in the field of plant automation, in which a plurality of automation systems is generally employed for controlling or updating a plant. In this situation, an important partial aspect is the use of variables from one automation system in a different automation system. The program elements that make mutual use of common resources, such as variables for example, have a logical relationship through this shared usage. For this reason, changes in one location frequently also necessitate changes in other locations, for example if the meaning of a variable or the data type of a variable changes. In many cases the user must be able to modify the program locations of the originator and the user of a resource. To this end, he must be able to easily select these program locations, starting from one side, for example in order to be able to find, open, display and change the program locations in question. Since a resource can be used by a plurality of users, it is also necessary to exercise control over a plurality of users. This required functionality corresponds to a type of “cross-reference list” for the global use of resources across the automation system, allowing the relevant program elements to be called and/or displayed. In this situation, the resources are generally displayed, and any changes needed made, in an engineering system linked communicatively with the automation systems.
According to the prior art, the instances of use of variables can only be displayed in the context of a program of an automation system by way of the reference list and navigation is effected by way of the latter to the corresponding definition location and all application locations. There are no corresponding solutions relating to the use of a resource in a plurality of automation systems.
When using unilateral programmed function block communication, for example with PUT/GET or READ/WRITE in accordance with IEC 61131-5, the user must ascertain the communication partner from the properties of the connection for example. Here he must use the address or name to identify the local variable in the program here and can use the local reference list here to find the application locations. When using bilateral programmed function block communication, for example with USEND/URCV, the user must similarly first ascertain the communication partner from the properties of the connection for example. Here he must use the connection identifier here belonging to the connection and the parameter R_ID to find the corresponding instance. The local variable used is here, and he can use the local reference list here to find the application locations.
An object of the invention is to enable simple navigation between the application locations of a resource in different automation systems.
This object is achieved with regard to a method and a system of the type mentioned in the introduction by the fact that the use of the resource of the first automation system in the at least second automation system is mapped as a bilateral reference in each case between the automation systems, whereby the bilateral reference also contains application locations of the resource in the respective automation system.
The mapping of the use of a resource in an object of a different communication partner, in other words a different automation system, as a bilateral reference between these objects is effected with system support and therefore always finds all application locations. A major source of error is thereby avoided.
In an advantageous embodiment, the identification characteristic is constructed hierarchically and has a system-specific path and a local identification of the resource. In this situation, the system-specific path is for example a path name, and the local identification is for example a name of the resource.
In a further advantageous embodiment, the bilateral reference in each case is stored in the at least two automation systems in a storage area in each case and is thus available locally in the systems.
In a further advantageous embodiment, the bilateral reference in each case is stored on an engineering system in a storage area. The bilateral reference is thus available directly in the engineering system, by way of which generally the display is effected and any changes relating to the resources are made, and which is linked communicatively with the automation systems.
In a further advantageous form of the embodiment, the application locations of the at least one resource of the first automation system can be displayed both in the first and also in the at least second automation system by way of the bilateral reference in each case by means of a first tool. The overview of the effect of the individual interacting program elements is facilitated and enhanced by this method since the originator/user relationship is represented and origination and use can be simply displayed in their respective context.
In a further advantageous form of the embodiment, the application locations of the at least one resource can be opened by means of the first tool in a second tool. This method is particularly suitable for navigation between a variable made available by one automation system and the variable's application locations and the corresponding instances in other automation systems in the case of bilateral programmed function block communication. With regard to unilateral programmed function block communication, it is possible to navigate between the variable reference specified at the block and the actual variable.
In a further advantageous form of the embodiment, the type of the second tool is determined by the application location. This serves to ensure that the object in question is opened with the tool appropriate to this object, for example the appropriate programming language editor.
In a further advantageous form of the embodiment, the second tool is integrated into the first tool. From these properties and the aforementioned advantages there results a considerable reduction in complexity for the user, as well as major assistance during program testing and commissioning, which results in clear time and cost savings.
In a further advantageous form of the embodiment, the first and the second tool are supported by means of an engineering system which is linked communicatively with the automation systems. In this situation, if the second tool is integrated into the first tool, this can for example be implemented by means of a further window in the engineering system.
The invention will be described and explained in detail in the following with reference to the embodiment illustrated in FIGURE. In the drawing:
The FIGURE shows a first automation system 1 in which a variable 3 is defined. This variable 3 is used in a second automation system 2, for which a proxy variable 4 is set up in order to avoid the need for the second automation system 2 to access the remote, first automation system 1 for each occasion the variable 3 is used. The use of the variable 3 in the second automation system 2 is mapped with its precise application location as a bilateral reference. This bilateral reference is stored in a storage area 5, 6 both in the first and also in the second automation system 1, 2. The application locations both of the variable 3 and also of its counterpart, the proxy variable 4, in the second automation system 2 can thus be displayed in both automation systems 1, 2. In this situation, the variables 3, 4 can also be displayed, and any changes needed made, in an engineering system linked communicatively with both automation systems 1, 2, in which the storage of the bilateral reference can additionally (or also exclusively in an embodiment not corresponding to the FIGURE) take place.
To summarize: The invention relates to a method and a system allowing the use of at least one resource of a first automation system in at least one second automation system, whereby the resource is made available by the first automation system and an identification characteristic is used for the unique identification of the resource in the at least second automation system.
The object of the invention is to enable a user to navigate in a simple manner between the application locations of originator and user of a resource. This object is essentially achieved by the fact that the use of the resource of the first automation system in the at least second automation system is mapped as a bilateral reference in each case between the automation systems and is stored in each case in a storage area in the automation systems, whereby the bilateral reference also contains application locations of the resource in the respective automation system. By using this method or system, a rapid identification of the communication partners involved with a resource can be displayed and the declaration location or the application location of this resource can be displayed there. This method is particularly suitable for supporting the navigation between a variable made available and its application locations and the corresponding instances in the case of bilateral programmed function block communication. With regard to unilateral programmed function block communication, it is possible to navigate between the variable reference specified at the block and the actual variable. This navigation is effected with system support and always finds all the application locations. A major source of error is thereby avoided.
| Number | Date | Country | Kind |
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| 06012060 | Jun 2006 | EP | regional |
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