Patent Publication Number: US-7593780-B2

Title: HMI reconfiguration method and system

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This application is a continuation-in-part of U.S. patent application Ser. No. 10/980,588, filed Nov. 3, 2004, entitled, “HMI RECONFIGURATION METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/050,923, filed Feb. 4, 2005, entitled, “CONFIGURABLE INTERFACE CONFIGURATION METHOD AND SYSTEM USING A REMOTE INTERFACE”, U.S. patent application Ser. No. 11/147,586, filed Jun. 7, 2005, entitled, “REAL TIME PARALLEL INTERFACE CONFIGURATION AND DEVICE REPRESENTATION METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,604, filed Jun. 7, 2005, entitled, “ABSTRACTED DISPLAY BUILDING METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,590, filed Jun. 7, 2005, entitled, “ENHANCED SPEED INTERFACE METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,603, filed Jun. 7, 2005, entitled, “DYNAMIC REPRESENTATION OF COMPONENT CONFIGURATION METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,582, filed Jun. 7, 2005, entitled, “UNIVERSAL WEB-BASED REPROGRAMMING METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,591, filed Jun. 7, 2005, entitled, “EVENT-DRIVEN COMPONENT MIRRORING METHOD AND SYSTEM”, U.S. patent application Ser. No. 11/147,607, filed Jun. 7, 2005, entitled, “METHOD AND SYSTEM FOR INTERFACE CONFIGURATION VIA DEVICE-SIDE SCRIPTING”, U.S. patent application Ser. No. 11/147,588, filed Jun. 7, 2005, entitled, “EMULATOR FOR GENERAL PURPOSE VIEWER CONFIGURABLE INTERFACE”, and U.S. patent application Ser. No. 11/147,589, filed Jun. 7, 2005, entitled, “RELEGENDABLE INTERFACE DEVICE DESIGN-TIME ENVIRONMENT SYSTEM AND METHOD”. The entireties of the aforementioned applications are incorporated herein by reference. 

   TECHNICAL FIELD 
   The subject invention relates generally to interface devices, and more particularly to the configuration of such interface devices to effectively manage industrial control systems. 
   BACKGROUND 
   Factories that utilize machines to produce products depend on reliable industrial control systems. Machines can be responsible for building, refining, and testing various objects. The machines themselves may also require regular or sporadic monitoring, maintenance, adjustment, management, testing, and repair. Skilled workers may be allowed to turn off a machine to complete a task or be required to work on the machine as it is running. However, such equipment can expose individuals to dangerous conditions. Those who work directly with machines usually have to wear protective clothing to minimize impact of potential injuries from accidents. In addition, workers need to adapt to the operating environment of the machines. For example, if specific products or machines operate in a low temperature environment, the workers on the production floor have no choice but to endure the cold. This can be uncomfortable or inconvenient for the workers. 
   Likewise, people working with such equipment can expose manufactured products to contamination. Hair, dirt, oil, and germs from humans may damage certain highly sensitive products. Protective clothing therefore must protect not only the person from injuries, but also the machine from contamination through human contact. Unfortunately, such precautions are not always sufficient to guard against these risks. For example, time and resources are often wasted to discard unrecoverable products in order to maintain quality control standards. 
   Interface devices provide a safe intermediate link between operators and machines. The employment of interface devices allows people to monitor and control equipment without working in immediate physical proximity of the machines. While interface devices are useful because operators can maintain a distance from the machines for safety and quality concerns, interface devices also enable operators to work on machines without being in their direct view (e.g., machines that are enclosed in a case or that reside in another room). Operators depend on the accuracy, convenience, and ease of use of interface devices. It is therefore beneficial that interface devices be as versatile, efficient, and reliable as possible. 
   SUMMARY 
   The following presents a simplified summary of the subject matter in order to provide a basic understanding of some aspects of subject matter embodiments. This summary is not an extensive overview of the subject matter. It is not intended to identify key/critical elements of the embodiments or to delineate the scope of the subject matter. Its sole purpose is to present some concepts of the subject matter in a simplified form as a prelude to the more detailed description that is presented later. 
   An industrial automation setting includes an operator that interacts with a machine via a customizable interface device and corresponding configuration station. The customizable interface device can be configured in a unique manner that is more efficient and personalized over conventional interface devices. Settings may be implemented that dictate when and how configuration takes place, supporting seamless operation during configuration. Within an interface device, device elements (also referred to as control objects) are software components that define features of the device, such as properties, methods, connections, and communications interfaces. Together, the device elements represent most if not all aspects of the interface device and can be configured or reconfigured through remote or direct access. 
   A configuration station is a tool used by an operator to access the interface device, as well as send commands to the machine it is linked to. A user can interact with the interface device via a configuration station by setting up queries for single or recurring processes. The device elements can be reconfigured in the configuration station (by first uploading the device elements from the interface device to the configuration station) or directly in the interface device (through local or remote access). When device elements are reconfigured without first being uploaded to the configuration station, the interface device can switch between a development environment (to support a configuration mode) and an operational environment (to support an execution mode). At times, it may be preferable for the interface device not to switch between environments, and in those situations the interface device may be configured to accommodate changes while remaining in an operational environment. 
   The device elements can reside in their respective interface devices. In another configuration, some device elements can be located in the interface device and other device elements located at a remote location. Different interface devices can efficiently share device elements that are housed in a central remote location. One feature of interface devices is the ability to alter their appearances to suit a user&#39;s preferences. Not only can visual templates be customizable, they can be saved and sent to other interface devices. Furthermore, a single interface device can switch among various visual templates to easily serve the specific needs of multiple users. 
   Additional aspects of interface devices provide for conserving memory and optimizing overall efficiency. One approach supports temporarily unloading unused features from active memory until they are needed again. Another approach targets device element mirroring for property changes. Rather than waste network resources to transmit redundant information, an identical or related device element can mirror a change of another device element. To further conserve resources, users can enlist the help of an emulator to mimic the configuration of an interface device without a dependence on such additional hardware means of an extra interface device. Any development or customization can occur on the emulator as a convenient testing base to view and implement new functions through the customization of a user application file. The user application file can be perfected before it is downloaded to hardware (e.g., an interface device). 
   To the accomplishment of the foregoing and related ends, certain illustrative aspects of embodiments are described herein in connection with the following description and the annexed drawings. These aspects are indicative, however, of but a few of the various ways in which the principles of the subject matter may be employed, and the subject matter is intended to include all such aspects and their equivalents. Other advantages and novel features of the subject matter may become apparent from the following detailed description when considered in conjunction with the drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a block diagram of an industrial control system. 
       FIG. 2  is a block diagram of a configuration station. 
       FIG. 3  is a block diagram of an interface device unloading system. 
       FIG. 4  is a block diagram of a device element mirroring system. 
       FIG. 5  is a block diagram of an emulation system. 
       FIG. 6  is a flow diagram of a method of facilitating industrial control. 
       FIG. 7  is another flow diagram of a method of facilitating industrial control. 
       FIG. 8  is a flow diagram of a method of facilitating an unloading module. 
       FIG. 9  is a flow diagram of a method of facilitating device element mirroring. 
       FIG. 10  is another flow diagram of a method of facilitating device element mirroring. 
       FIG. 11  is a flow diagram of a method of facilitating emulation. 
       FIG. 12  is a schematic block diagram illustrating a suitable operating environment. 
       FIG. 13  is a schematic block diagram of a sample-computing environment. 
   

   DETAILED DESCRIPTION 
   The subject matter is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the subject matter. It may be evident, however, that subject matter embodiments may be practiced without these specific details. In other instances, well-known structures and devices are illustrated in block diagram form in order to facilitate describing the embodiments. 
   As used in this application, the terms “component” and “system” are intended to refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a server and the server can be a computer component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. 
   In  FIG. 1 , a block diagram of an industrial control system  100  that facilitates indirect control of a machine is depicted. The industrial control system  100  comprises an interface device  120  and configuration station  140  that together provide a working link between an operator  150  and a machine  110 . The interface device  120  is fully configurable in terms of visual and operational functionalities, providing for a flexible, efficient, and user-friendly tool. In addition, the manner in which configuration proceeds is also flexible, such as through real time configuration in a plurality of operating states. Examples of such an interface device include a human-machine interface (HMI), man-machine interface (MMI), graphical user interface (GUI), user interface (UI), and an operator interface (OI). The interface device  120  (along with the operator  150 ) can be located in a close physical proximity to the machine or can be located at a considerable distance from the machine, allowing the operator to completely and effectively interact with the machine as if he was working directly on the equipment. The interface device  120  houses at least one device element  130  that defines features relating to the interface device  120  or the machine  110 . For example, device elements can define properties (e.g., adjustable attributes, such as the image representation of an element on a screen), methods (e.g., executable functions that define the operation performed by the element), connections (e.g., links that enable data to be exchanged among separated elements), and communications interfaces (e.g., the setup that enables communications to occur) of an interface device and can include software pushbuttons, timers, gauges, PLC communication servers, screens, and applications for their corresponding machines. A particular example of a device element  130  is a temperature gauge that records temperature of the machine  110 . 
   The operator  150  can be a person, group of individuals, entity, program, or artificial intelligence unit that is mainly responsible for at least initial setup and direction of the machine  110 , along with regularly monitoring the machine  110 . The operator  150  employs the configuration station  140  as a tool to access device elements  130  in the interface device  120 . When the operator  150  desires to measure, observe, test, extract, or alter something on the machine  110  or interface device  120 , the operator  150  can generate a query by way of the configuration station  140 . The configuration station  140  can proceed in various ways. 
   A configuration station may control one or more interface devices at once. The configuration station  140  can be integrated with the interface device or it can function as stand-alone tool. In one example, an operator can use a configuration station to develop appearance and organization of the interface device. In another example, the operator can use a configuration station to set up a continuous monitoring tool to detect high levels of contamination exposed to the machine in a cleansing phase of the production process. With respect to reconfiguration procedure, the configuration station  140  can upload the necessary device element(s)  130  from the interface device  120  to the configuration station  140 , reconfigure the device element  130  in the configuration station  140 , and download the reconfigured device element  130  back to the interface device  120 . As an alternative, the configuration station  140  may reconfigure the device element  130  directly in the interface device  120  (where uploading the device element  130  to the configuration station  140  is unnecessary). This technique eliminates the need for a special program to retrieve and store the code, since the changes are made directly in the environment of the interface device. Furthermore, additional external code is not required to accomplish the necessary editing operations. 
   For this type of reconfiguration, the interface device  120  can switch between a development environment (to support a configuration mode) and an operational environment (to support an execution mode). While the interface device  120  is operating in a development environment, a parallel visual representation (e.g., in the form of a JPEG file, or any suitable static or sub-static representation) of the device elements can remain on the interface device (and refreshed when appropriate) as viewed by a user to minimize impact of obvious interruptions in operation. To accomplish this view, relevant elements are queried to extract respective image(s) or equivalent visual representation(s) and stored in a virtual frame buffer or memory display context. This content can be displayed on a general purpose viewer or browser while the interface device  120  is being configured in a development environment. 
   However, the configuration station  140  may reconfigure the device element  130  in the interface device  120  while the interface device  120  remains in execution mode so as to not interrupt operation of the machine  110 . As certain device elements are actively running a process, other device elements may be edited. When configuration of those device elements is complete, they may be activated as soon as they become available or upon predetermined times (e.g., according to a refresh rate)-effectively achieving seamless operation of a continuous process. In an example, during a semiconductor heating process, an engineer may decide to increase the frequency in which the temperature reading is transmitted. Since it is inefficient to stop production of the batch in order to change that setting, the interface device supports reconfiguration during execution. As a result, the temperature is read more often, starting at the next wafer, once the setting is finalized, thus avoiding interruption of the process. Regardless of which environment is used for reconfiguration, such reconfiguration of device elements is not dependent on their prior configuration. The configuration station  140  does not utilize or require any prior knowledge of the nature, function, and properties of the device elements. Thus, specialized customization of the reconfiguration tool is not necessary. 
   Depending on the ability and resources of the interface device  120 , the particular situation, and the needs of the operator  150 , the configuration station  140  may select the most appropriate approach for a particular query. For instance, where a complete and thorough reconfiguration of multiple device elements is required, it may be more effective for the interface device  120  to switch to a development environment while the configuration station  140  is implementing the reconfiguration process. In another situation, where a simple reconfiguration that only affects one device element is required, if may be more efficient for the configuration station  140  to directly access that device element while the rest of the interface device  120  continues uninterrupted execution of its regular procedure. 
   In appropriate situations, the configuration station  140  may not be required. The operator  150  can create a query that self-generates reoccurring processes. In that case, the interface device  120  essentially creates its own commands, tests, and adjustments without need for constant monitoring or individualized queries. 
   In addition, the interface device  120  can access an external device element store  160  for device elements with additional features not found on the interface device  120 . The device element store  160  can be available to a select group of interface devices or it can have open availability. The device element store  160  enables different machines to efficiently have access to a wide range of device elements. If necessary, the interface device  120  can optionally reach more than one device element store. 
   The interface device  120  relays and implements the corresponding controls, as specified by the operator  150 , to the machine  110 . The information communicated between the interface device  120  and machine  110  may be related to functions that monitor (e.g., a command to record the temperature of a particular chamber of the machine  110  at a certain time) or alter (e.g., a command to rotate a robotic arm of the machine  110  to a different chamber) the machine  110 . The setup can be a single or repetitive function, dependent on various constraints. One example of a single function is a process for the purpose of testing or troubleshooting an aspect of the machine  110 . An example of a repetitive function is a process that measures temperature of a chamber of the machine  110  at one-hour intervals (e.g., a time-based constraint), or turns off the heating mechanism once the temperature reaches a predetermined point (e.g., an event-based constraint). 
   It is to be appreciated that embodiments described herein can employ various artificial intelligence-based schemes for carrying out various aspects thereof. For example, control of a configuration station can involve using an automatic classifier system and process. The classifiers can be employed to determine and/or infer a need for changing settings of the interface device, as well as assisting with when and how to implement those changes. The classifiers can also apply a utility-based analysis that considers the cost associated with implementing the wrong setting against the cost of time and resources for manual operation. Moreover, current user state (e.g., amount of free time, urgency, need for accuracy, user frustration, display device capabilities . . . ) can be considered in connection with recognition in accordance with the embodiments described herein. 
   A classifier is a function that maps an input attribute vector, X=(x1, x2, x3, x4, . . . xn), to a confidence that the input belongs to a class, that is, ƒ(X)=confidence(class). Such classification can employ a probabilistic and/or statistical-based analysis (for example, factoring into the analysis utilities and costs) to prognose or infer an action that a user desires to be automatically performed (e.g., implement a change to the interface device through the configuration station). 
   A support vector machine (SVM) is an example of a classifier that can be employed. The SVM operates by finding a hypersurface in the space of possible inputs, which hypersurface attempts to split the triggering criteria from the non-triggering events. Intuitively, this makes the classification correct for testing data that is near, but not identical to, training data. Other directed and undirected model classification approaches include, e.g., naïve Bayes, Bayesian networks, decision trees, and probabilistic classification models providing different patterns of independence can be employed. Classification as used herein also is inclusive of statistical regression that is utilized to develop models of priority. 
   As will be readily appreciated from the subject specification, the subject invention can employ classifiers that are explicitly trained (such as by generic training data) as well as implicitly trained (such as by observing user behavior and/or receiving extrinsic information). For example, SVM&#39;s are configured by a learning or training phase within a classifier constructor and feature selection module. Thus, the classifier(s) can be used to automatically perform a number of functions as described herein. Accordingly, the operator  150  can optionally employ classifiers in connection with effecting the functionalities associated therewith. 
   Referring to  FIG. 2 , a block diagram of a configuration station  140  that facilitates flexible interaction between an operator and an interface device is illustrated. Not only can the configuration station  140  respond to direct instructions from an operator, the configuration station  140  may dynamically alter settings based on preferences, past behavior, and capabilities of the device and surrounding environment. For example, the configuration station may automatically optimize brightness and contrast of a screen view based on the current level of light. In another example, the configuration station may alter the amount of information displayed on a screen view based on the limitations of the displaying device (e.g., by reducing the amount of information displayed for a small screen or limited memory device). The configuration station  140  comprises a connection component  220  that establishes a working connection between the configuration station and the interface device, a configuration component  230  that facilitates the configuration of the interface device, and an operation component  240  that implements such configuration on the interface device. The configuration station  140  may supply direct access between an operator and an interface device through a cable or other physical connection. In addition, the configuration station  140  may also be housed in a browser  210  to provide remote access to one or more operators and one or more interface devices through an Internet or intranet connection. 
   The operator initiates configuration by sending a query to the configuration station  140 . This signals the connection component  220  to establish a connection between the configuration station  140  and the interface device (as well as corresponding device elements residing on the interface device and device elements linked to the interface device). Upon verification that such connection has been established, the configuration component  230  selects the appropriate device elements to develop an interface screen for the interface device. The configuration component  230  may need to modify some device elements for them to be properly implemented. A resulting user-friendly interface screen accommodates the operator. The operation component  240  implements the interface screen onto the interface device. The interface screen may be displayed on the interface device itself, or on an application linked to the interface device. The interface screen displays functions and options that are altered by the operator via the device elements. 
   In addition, the interface screen can be customized as a template structure. Such template can be saved and sent to other interface devices, as well as automatically generated according to specific roles, profiles, and historical data. In one instance, a set of identical machines may operate on a production floor. Each machine may have its own interface screen that could be individually customized. However, having identical or consistent interface screens for all the machines greatly enhances the comfort of the operator because the operator would not need to readjust his thought process each time he works on a particular machine to familiarize himself with a different screen. When the operator determines one interface screen template, that template can be saved and implemented onto other interface devices without repeating the customization process. An interface device can switch among multiple saved interface screens, and thus is adaptable for a variety of users. Furthermore, generation of templates can occur with explicit or implicit training, using various classifiers. Through explicit training, a user sets forth the particular configuration scheme with detailed commands. Through implicit training, the system monitors and evaluates behavior of the operator, interface device, and machine, and intelligently implements changes for more convenient and efficient operation. 
   It is to be appreciated that various aspects described herein can be automated (e.g., through employment of artificial intelligence). Accordingly, automated action can be performed in connection with implementing one or more functionalities. The action can be triggered for example based on user and/or computing state, environment, preferences, tasks at hand, goals, historical information, and other extrinsic information. Moreover, a utility-based analysis can be employed in connection with such automated action where for example the cost of taking an incorrect or undesired automated action is factored against the benefit of taking a correct or desired automated action. In connection with the discussion supra related to training classifiers, such classifiers can be implicitly and/or explicitly trained in connection with taking automated action. 
   The configuration station  140  can be housed within a browser  210 . Through a browser  210 , the configuration station  140  can be functionally connected to, but physically apart from, the interface device. For instance, when a technician has an urgent problem, he may contact an engineer. Instead of troubleshooting the problem on the production floor, the engineer may access the configuration station  140  through an intranet connection from his cubicle office. Moreover, the engineer can also access the configuration station  140  from his home computer, using the Internet. 
   In view of  FIG. 3 , a block diagram of an interface device unloading system  300  that conserves memory and optimizes overall efficiency is depicted. As indicated in this example, the main interface screen  310  incorporates device element X  320  and device element Y  330  (e.g., all device elements that support the interface device), while the unloaded interface screen  340  incorporates just device element X  350  (e.g., eliminating device element Y  330  that was not required for continuous operation of the interface device). 
   The main interface screen  310  maintains a global container of all initial device elements, while the unloaded interface screen maintains only the aspects necessary for the present view. Display properties (e.g., color, location, size, and text) can represent one aspect of a visual representation. Functional properties (e.g., count, interval, time, and reset) can represent another aspect of a visual representation. For example, this situation applies when a graphical view of a clock remains at 1:00 PM for 59 seconds until it turns into 1:01 PM. Although the functional features of the clock must be retained in order to keep track of the time, the visual features of the clock are constant for these 59 seconds. Therefore, the visual features of the clock do not need to be implemented again during the time period and can be temporarily unloaded from memory. 
   In one example, the main interface screen  310  comprises all device elements, which in this case are device element X  320  and device element Y  330 . The main interface screen  310  is a display of a graphical clock that represents the current time, e.g., 1:00 PM. Device element X  320  incorporates the functional aspect of keeping track of the time, while device element Y  330  incorporates the visual aspect of graphically presenting the time. The unloaded interface screen  340  represents a subsequent view of the interface device, e.g., a few seconds after 1:00 PM. Since the visual aspect that displays 1:00 PM remains the same until 1:01 PM, device element Y  330  is unloaded from memory, but device element X  350  must be maintained to keep track of the progressing time. While an unloaded device element is temporarily removed from memory, that device element still remains instantiated and active. 
   In another example, device element Y  330  is not fully unloaded from memory, but partially suppressed. In this situation, device element Y  330  is only partially maintained as necessary in the unloaded interface screen  340 . 
   By fully or partially unloading unessential device elements from active memory, overall system performance improves. Memory conservation allows use of available memory space to be efficient, which in turn reduces processing time. Remaining memory can be allocated towards other tasks that may all run concurrently. In addition to memory conservation, transmission of redundant data wastes network resources and may impede network traffic flow. Such benefits with respect to memory and network traffic conservation apply to device element mirroring as well. 
     FIG. 4  illustrates a block diagram of a device element mirroring system  400 , another approach to memory conservation and optimization. As an example, the device element mirroring system  400  comprises a representative device element X  410  with properties (X 1 -X 4 ) that are mirrored by device element Y  420  (Y 1 -Y 4 ). The properties of device element X  410  correspond with the properties of device element Y  420  (e.g., X 1  and Y 1  represent a color attribute, X 2  and Y 2  represent a location attribute, X 3  and Y 3  represent a size attribute, and X 4  and Y 4  represent a text attribute). 
   Device element X  410  and device element Y  420  may each act individually upon shared data. If device element X  410  and device element Y  420  have identical or related attributes, device element mirroring may be used to conserve memory and improve performance without sharing properties. Device element mirroring enables more flexible operation than property sharing. While property sharing requires multiple device elements to point to a single shared attribute, device element mirroring efficiently and selectively transmits necessary data from one device element to one or more other device elements. The transfer of signals between device elements can be based on events that are manual or automatic in nature. A manual event is one that is directed by forced input from a user (e.g., a command entered by the click of a mouse). An automatic event is one that is based on circumstances unique to a situation (e.g., a detection of a dangerous condition that automatically triggers a warning message). 
   For example, device element X  410  comprises four properties, X 1 , X 2 , X 3 , and X 4 , which represent the color, location, size, and text, respectively. Device element Y  420  comprises its own four properties, Y 1 , Y 2 , Y 3 , and Y 4 , which correspond to the same category types as those found in device element X  410 . Device element X  410  receives data from a source. This data communicates a warning message, which triggers a change in X 1 , the color property, of device element X  410  from green to red. The property change of X 1  in device element X  410  triggers device element mirroring in device element Y  420  to change its color property, Y 1 , from green to red as well. 
   Device element mirroring of device element Y  420  from device element X  410  does not necessarily require that device element Y  420  mirror an identical or analogous property of device element X  410 . For instance, color property X 1 &#39;s change from green to red can trigger text property Y 4 &#39;s change from “GO” to “STOP”—in addition to (or instead of) the Y 1  color property change described above. 
   In another example, the data communicated from the source to device element X  410  can trigger device element mirroring. Rather than wait for a property change in device element X  410 , device element Y  420  may initiate the mirroring function upon indication that device element X  410  has received the appropriate data from the source. For example, color property Y 1  can be set to always match color property X 1 , regardless of what color it is or what type of data was triggered at the source. 
   As depicted in  FIG. 5 , a block diagram of an emulation system  500  for software mimicking of a hardware implementation is represented. The emulation system  500  comprises a hardware interface device  510 , containing full-scale applications  520 , device elements  530 , and screen views  540 , and a software emulator  550 , containing the corresponding software instances of the applications  560 , device elements  570 , and screen views  580 . Multiple emulators can be created for a single hardware device, and a single emulator can contain elements extracted from more than one hardware device. 
   The interface device  510  is a hardware representation of the tool used by an operator to interact with a machine. The interface device  510  is configured with applications  520 , device elements  530 , and screen views  540  for a user-friendly presentation to the operator. The emulator  550  is a software implementation of the interface device  510 . The emulator  550  provides a simple and inexpensive platform to develop, test, and finalize the configuration of an interface device  510  before such implementation occurs on an actual piece of hardware. 
   The emulator  550  is created by extracting copies of the applications  520 , device elements  530 , and screen views  540  of the interface device  510 . The resulting product is a software version of the hardware device, with fully functional and configurable features. The applications  560 , device elements  570 , and screen views  580  on the emulator  550  will behave identically to the applications  520 , device elements  530 , and screen views  540  on the actual interface device  510 . For instance, a developer may want to test a heating function that heats a chamber of the machine after an item counter reaches a certain count. The developer may want to reconfigure this feature by adding supplementary functions, such as a rotation task at certain intervals of time. While test procedures in hardware can be expensive and dangerous, troubleshooting problems in the software can be debugged simply by altering the code. The process can be continuously adjusted on the emulator  550  until the full reconfiguration is finalized. 
   Upon satisfactory completion of the reconfiguration process of the emulator  550 , the newly developed features are ready to be transferred to the hardware interface device  510 . The applications  560 , device elements  570 , and screen views  580  on the emulator  550 , as modified, are loaded onto the interface device  510  to replace the originally configured applications  520 , device elements  530 , and screen views  540 . The behavior of the interface device  510  has already been mimicked and predicted by the emulator  550 , therefore minimizing the more time-consuming hardware implementation and adjustment by a developer. 
   In view of the exemplary systems illustrated and described above, methodologies that may be implemented in accordance with the embodiments will be better appreciated with reference to the flow charts of  FIGS. 6-11 . While, for purposes of simplicity of explanation, the methodologies are depicted and described as a series of blocks, it is to be understood and appreciated that the embodiments are not limited by the order of the blocks, as some blocks may, in accordance with an embodiment, occur in different orders and/or concurrently with other blocks from that shown and described herein. Moreover, not all illustrated blocks may be required to implement the methodologies in accordance with the embodiments. 
   The embodiments may be described in the general context of computer-executable instructions, such as program modules, executed by one or more components. Generally, program modules include routines, programs, objects, data structures, etc., that perform particular tasks or implement particular abstract data types. Typically, the functionality of the program modules may be combined or distributed as desired in various instances of the embodiments. 
     FIG. 6  illustrates a flow diagram of a method  600  of facilitating industrial control, e.g., configuration or reconfiguration of an interface device. In particular, the method  600  outlines a general process for interface device configuration through instructions from an operator. The method  600  starts by verifying the connection between the configuration station and the interface at  610 . Such connection can be a direct connection, an intranet connection, or an Internet connection and can be indicated on the configuration station. Without initial verification of a connection, efforts to transmit and receive data are futile. 
   Once the connection has been established, at  620 , the operator configures the interface device using the configuration station. Configuration of the interface device through its device elements can be performed in a development environment or an operational environment. To support configuration within a development environment, the interface device temporarily pauses the execution of all running processes and allows an operator to freely modify, delete, or add device elements. To support configuration within an operational environment, the interface device&#39;s execution process is not interrupted while the operator configures device elements that are not active at the moment. In either environment, configuration is accomplished without using a special program to retrieve and harbor the code using external resources. 
   If configuration of the interface device is desired in a development environment, display views can be maintained to provide a continuous visual representation of the interface device. In preparation for this view, each device element is first queried to extract its image or equivalent visual representation. Then, these images are collected and stored in a virtual frame buffer or memory display context. Therefore, this content is displayed on a general purpose viewer or browser while the interface device switches from an operational environment to a development environment for device element configuration. 
   After the interface device is fully configured, operation of the newly configured interface device resumes at  630 . If the interface device switched to a configuration mode at  620 , the interface device would then switch back to the execution mode after the reconfiguration was complete. If the interface device did not switch to a configuration mode and instead remained in execution mode at  620 , transition from configuration to operation of the interface device appears to occur almost uninterrupted. 
     FIG. 7  is another flow diagram of a method  700  of facilitating industrial control, affording various options in which device elements of an interface device are managed and configured. The method  700  begins by detecting an interface device through a configuration station at  705 . The detection can be triggered upon an event or regular or sporadic occurrences. At  710 , if the device is recognized as valid and configurable, the method  700  proceeds to determine at  715  whether a password is required for access to the interface device. If a password is required, at  720  the password entered in response to a prompt is verified for accuracy. At  725 , if the password is correct, the method  700  continues to  735 , where the interface device receives and processes configuration information from the configuration station. If a password is not required at  715 , the method  700  immediately proceeds to  735  to receive and process configuration information. In a circumstance where the interface device is not valid and configurable at  710 , or where the submitted password is incorrect at  725 , the configuration process does not occur. 
   The configuration of the device elements can occur in the interface device or in the configuration station. At  740 , the operator determines whether he would like to download the device elements to the configuration station. If so, the device elements are downloaded from the interface device at  745 , configured in the configuration station at  750 , and uploaded back to the interface device at  755 . At  740 , if the operator determines he would not like to download the device elements to the configuration station, at  760 , configuration of the device elements occur directly in the interface device. 
   Regardless of where the configuration occurs (in the interface device or in the configuration station), the connection can be supported by numerous ways. One option is to have a direct link between the configuration station and the interface device. In particular, the configuration station may be housed in the interface device or connected through a direct line. In the alternative, the configuration station may access the interface device remotely with a browser, enabling one or more operators to view the configuration station from any computer connected to the intranet or Internet. 
     FIG. 8  illustrates a flow diagram of a method  800  of facilitating an unloading module that supports memory conservation and efficiency by temporarily removing unessential device elements from active memory. The method  800  starts at  810 , in view of an initial interface screen that retains all aspects (visual and operational) of the necessary device elements in a global memory container. For example, the first screen may present a digital temperature display such as 50° F. If the numeric view is set to display only integers, it is irrelevant from the perspective of the display whether the actual temperature is 49.6° F. or 50.2° F. because in either situation (rounded to the nearest one), the appearance remains at 50° F. Before proceeding to the next screen, the method  800  checks for such idle elements at  820 . Status checking can occur at regular or random time intervals or can be triggered based on certain events or changes to the interface device. 
   If there are idle elements, at  830 , the interface device temporarily unloads those unnecessary device elements from the global memory container. In the above example, the device elements representing display property features (e.g., font, color, position, and text) is unloaded from memory. The remaining device elements (e.g., features relating to monitoring and measurement of temperature) are retained in memory for the next screen view at  840 . In the example discussed above, if the temperature were to rise to 50.2° F., the device elements supporting the screen view would be unloaded, but the device elements supporting the internal monitoring, measuring, and recording of the temperature would be retained so that the interface device contains a current and accurate determination of the actual temperature. Returning to  820 , if all device elements are active and required for the subsequent screen, then all device elements are retained in memory at  840 . 
     FIG. 9  refers to a flow diagram of a method  900  of facilitating device element mirroring, another option for conserving memory by directly communicating a change between two device elements with an identical or similar property. One device element processes received information relating to a property change and at least one other device element mirrors this change by performing the same or a related change without processing the information again. 
   To begin, at  910  the source sends data to a first device element. The data indicates an instruction with respect to a setting or changing one or more properties. The first device element receives and processes the data at  920 , and adjusts one or more properties according to the processed data at  930 . At  940 , if the property change triggers device element mirroring, then the first device element sends data indicating the property change to the second device element at  950 . The second device element receives and processes this information at  960  and automatically adjusts an identical or related property at  970 . The adjustment can occur immediately or after a random or predetermined period of time. Returning to  940 , if the first device element&#39;s property change does not trigger device element mirroring, then the second device element does not receive further information regarding the present situation. 
   In addition, device element mirroring may work as a chain, a group, or a combination of the two. As a chain, the second device element may trigger mirroring of another device element, which may trigger mirroring of yet another device element, and so on. As a group, a property change in one device element can trigger the function of multiple device elements that concurrently mirror that device element. In a combination of chain and group process, many device elements can be variously mirrored in a web of interconnections. 
   Turning to  FIG. 10 , another flow diagram of a method  1000  of facilitating device element mirroring based on source-triggering events is presented. In this situation, at  1010 , the source sends data to the first device element. The data can originate from an event based on manual or automatic sources. For example, a user can manually submit a command to force device element mirroring. In addition, a detected emergency occurrence can trigger a warning message that necessitates device element mirroring. This data transmission leads to the prompt at  1020  to determine whether device element mirroring is triggered. If so, at  1030 , the first device element receives and processes the data from the source. At  1040 , the first device element sends data to the second device element and at  1050 , the second device element receives and processes the data from the first device element. Finally, at  1060 , the first device element and the second device element adjust their respective properties at the same time. In the alternative, the first device element could have adjusted its property at  1050 , while the second device element was receiving and processing its data. Yet another option is to hold the adjustment of the first device element&#39;s property until after the second device element has completed its adjustment. 
   Going back to  1020 , if the data transmission from the source does not trigger device element mirroring, then at  1070 , only the first device element receives and processes the data from the source and at  1080 , adjusts its property accordingly. Since device element mirroring is not triggered, the second device element is left alone. 
   As illustrated,  FIG. 11  is a flow diagram of a method  1100  of creating an emulator in order to execute the same firmware on a personal computer as is executed by an interface device. Emulation enables versatile software development of an interface device without committing the configuration to hardware, conserving time and resources. Starting with  1110 , an emulator is created by extracting a software copy of the interface device. This copy is a full duplication of the interface device with fully functioning features. At  1120 , a user connects to the emulator and creates a user application file on the emulator, which behaves exactly as it would on the actual interface device. The user application file is a template with user-customizable properties. For example, properties can be configured for functionality, accuracy, and user-friendliness. If those properties are not satisfactory, they can be adjusted as necessary. At  1130 , if a developer feels that the user application file requires further customization, he may return to  1120  and run test programs and change the code as many times as he wishes. When the user application file is configured to the developer&#39;s satisfaction, he may download the user application file to the interface device hardware at  1140 . 
   In order to provide a context for the various aspects of the disclosed subject matter,  FIGS. 12 and 13  as well as the following discussion are intended to provide a brief, general description of a suitable environment in which the various aspects of the disclosed subject matter may be implemented. While the subject matter has been described above in the general context of computer-executable instructions of a computer program that runs on a computer and/or computers, those skilled in the art will recognize that the invention also may be implemented in combination with other program modules. Generally, program modules include routines, programs, components, data structures, etc. that perform particular tasks and/or implement particular abstract data types. Moreover, those skilled in the art will appreciate that the inventive methods may be practiced with other computer system configurations, including single-processor or multiprocessor computer systems, mini-computing devices, mainframe computers, as well as personal computers, hand-held computing devices (e.g., personal digital assistant (PDA), phone, watch . . . ), microprocessor-based or programmable consumer or industrial electronics, and the like. The illustrated aspects may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. However, some, if not all aspects of the invention can be practiced on stand-alone computers. In a distributed computing environment, program modules may be located in both local and remote memory storage devices. 
   With reference to  FIG. 12 , an exemplary environment  1210  for implementing various aspects disclosed herein includes a computer  1212  (e.g., desktop, laptop, server, hand held, programmable consumer or industrial electronics . . . ). The computer  1212  includes a processing unit  1214 , a system memory  1216 , and a system bus  1218 . The system bus  1218  couples system components including, but not limited to, the system memory  1216  to the processing unit  1214 . The processing unit  1214  can be any of various available microprocessors. Dual microprocessors and other multiprocessor architectures also can be employed as the processing unit  1214 . 
   The system bus  1218  can be any of several types of bus structure(s) including the memory bus or memory controller, a peripheral bus or external bus, and/or a local bus using any variety of available bus architectures including, but not limited to, 11-bit bus, Industrial Standard Architecture (ISA), Micro-Channel Architecture (MSA), Extended ISA (EISA), Intelligent Drive Electronics (IDE), VESA Local Bus (VLB), Peripheral Component Interconnect (PCI), Universal Serial Bus (USB), Advanced Graphics Port (AGP), Personal Computer Memory Card International Association bus (PCMCIA), and Small Computer Systems Interface (SCSI). 
   The system memory  1216  includes volatile memory  1220  and nonvolatile memory  1222 . The basic input/output system (BIOS), containing the basic routines to transfer information between elements within the computer  1212 , such as during start-up, is stored in nonvolatile memory  1222 . By way of illustration, and not limitation, nonvolatile memory  1222  can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM), or flash memory. Volatile memory  1220  includes random access memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in many forms such as synchronous RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM). 
   Computer  1212  also includes removable/non-removable, volatile/non-volatile computer storage media.  FIG. 12  illustrates, for example, disk storage  1224 . Disk storage  1224  includes, but is not limited to, devices like a magnetic disk drive, floppy disk drive, tape drive, Jaz drive, Zip drive, LS-100 drive, flash memory card, or memory stick. In addition, disk storage  1224  can include storage media separately or in combination with other storage media including, but not limited to, an optical disk drive such as a compact disk ROM device (CD-ROM), CD recordable drive (CD-R Drive), CD rewritable drive (CD-RW Drive) or a digital versatile disk ROM drive (DVD-ROM). To facilitate connection of the disk storage devices  1224  to the system bus  1218 , a removable or non-removable interface is typically used such as interface  1226 . 
   It is to be appreciated that  FIG. 12  describes software that acts as an intermediary between users and the basic computer resources described in suitable operating environment  1210 . Such software includes an operating system  1228 . Operating system  1228 , which can be stored on disk storage  1224 , acts to control and allocate resources of the computer system  1212 . System applications  1230  take advantage of the management of resources by operating system  1228  through program modules  1232  and program data  1234  stored either in system memory  1216  or on disk storage  1224 . It is to be appreciated that the present invention can be implemented with various operating systems or combinations of operating systems. 
   A user enters commands or information into the computer  1212  through input device(s)  1236 . Input devices  1236  include, but are not limited to, a pointing device such as a mouse, trackball, stylus, touch pad, keyboard, microphone, joystick, game pad, satellite dish, scanner, TV tuner card, digital camera, digital video camera, web camera, and the like. These and other input devices connect to the processing unit  1214  through the system bus  1218  via interface port(s)  1238 . Interface port(s)  1238  include, for example, a serial port, a parallel port, a game port, and a universal serial bus (USB). Output device(s)  1240  use some of the same type of ports as input device(s)  1236 . Thus, for example, a USB port may be used to provide input to computer  1212  and to output information from computer  1212  to an output device  1240 . Output adapter  1242  is provided to illustrate that there are some output devices  1240  like displays (e.g., flat panel and CRT), speakers, and printers, among other output devices  1240  that require special adapters. The output adapters  1242  include, by way of illustration and not limitation, video and sound cards that provide a means of connection between the output device  1240  and the system bus  1218 . It should be noted that other devices and/or systems of devices provide both input and output capabilities such as remote computer(s)  1244 . 
   Computer  1212  can operate in a networked environment using logical connections to one or more remote computers, such as remote computer(s)  1244 . The remote computer(s)  1244  can be a personal computer, a server, a router, a network PC, a workstation, a microprocessor based appliance, a peer device or other common network node and the like, and typically includes many or all of the elements described relative to computer  1212 . For purposes of brevity, only a memory storage device  1246  is illustrated with remote computer(s)  1244 . Remote computer(s)  1244  is logically connected to computer  1212  through a network interface  1248  and then physically connected via communication connection(s)  1250 . Network interface  1248  encompasses communication networks such as local-area networks (LAN) and wide-area networks (WAN). LAN technologies include Fiber Distributed Data Interface (FDDI), Copper Distributed Data Interface (CDDI), Ethernet/IEEE 802.3, Token Ring/IEEE 802.5 and the like. WAN technologies include, but are not limited to, point-to-point links, circuit-switching networks like Integrated Services Digital Networks (ISDN) and variations thereon, packet switching networks, and Digital Subscriber Lines (DSL). 
   Communication connection(s)  1250  refers to the hardware/software employed to connect the network interface  1248  to the bus  1218 . While communication connection  1250  is shown for illustrative clarity inside computer  1212 , it can also be external to computer  1212 . The hardware/software necessary for connection to the network interface  1248  includes, for exemplary purposes only, internal and external technologies such as, modems including regular telephone grade modems, cable modems, power modems and DSL modems, ISDN adapters, and Ethernet cards or components. 
     FIG. 13  is a schematic block diagram of a sample-computing environment  1300  with which the present invention can interact. The system  1300  includes one or more client(s)  1310 . The client(s)  1310  can be hardware and/or software (e.g., threads, processes, computing devices). The system  1300  also includes one or more server(s)  1330 . Thus, system  1300  can correspond to a two-tier client server model or a multi-tier model (e.g., client, middle tier server, data server), amongst other models. The server(s)  1330  can also be hardware and/or software (e.g., threads, processes, computing devices). The servers  1330  can house threads to perform transformations by employing the present invention, for example. One possible communication between a client  1310  and a server  1330  may be in the form of a data packet adapted to be transmitted between two or more computer processes. The system  1300  includes a communication framework  1350  that can be employed to facilitate communications between the client(s)  1310  and the server(s)  1330 . The client(s)  1310  are operatively connected to one or more client data store(s)  1360  that can be employed to store information local to the client(s)  1310 . Similarly, the server(s)  1330  are operatively connected to one or more server data store(s)  1340  that can be employed to store information local to the servers  1330 . 
   It is to be appreciated that the systems and/or methods of the embodiments can be facilitated with computer components and non-computer related components alike. Further, those skilled in the art will recognize that the systems and/or methods of the embodiments are employable in a vast array of electronic related technologies, including, but not limited to, computers, servers, and/or handheld electronic devices, and the like. 
   What has been described above includes examples of the embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of the embodiments are possible. Accordingly, the subject matter is intended to embrace all such alterations, modifications, and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.