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EP2247987A1 - Procédé pour faire fonctionner un appareil de terrain - Google Patents

Procédé pour faire fonctionner un appareil de terrain

Info

Publication number
EP2247987A1
EP2247987A1 EP09715678A EP09715678A EP2247987A1 EP 2247987 A1 EP2247987 A1 EP 2247987A1 EP 09715678 A EP09715678 A EP 09715678A EP 09715678 A EP09715678 A EP 09715678A EP 2247987 A1 EP2247987 A1 EP 2247987A1
Authority
EP
European Patent Office
Prior art keywords
field device
access
operating
operating tool
access request
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.)
Ceased
Application number
EP09715678A
Other languages
German (de)
English (en)
Inventor
Vincent De Groot
Jörg HÄHNICHE
Matthias RÖMER
Raimund Sommer
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.)
Endress and Hauser Process Solutions AG
Original Assignee
Endress and Hauser Process Solutions AG
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 Endress and Hauser Process Solutions AG filed Critical Endress and Hauser Process Solutions AG
Publication of EP2247987A1 publication Critical patent/EP2247987A1/fr
Ceased 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
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • G05B19/0425—Safety, monitoring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
    • 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
    • G05B2219/25—Pc structure of the system
    • G05B2219/25428—Field device
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31104—Remote configuration of parameters of controlled devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2141—Access rights, e.g. capability lists, access control lists, access tables, access matrices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80—Management or planning

Definitions

  • the present invention relates to a method for operating a field device of the process automation technology according to the preamble of claim 1 and to a feeder of the process automation technology according to the preamble of claim 12.
  • feeder devices are often used to detect and / or influence process variables.
  • Sensors such as liquid level gauges, flowmeters, pressure and temperature measuring devices, pH redox potential measuring devices, conductivity measuring devices, etc., which record the respective process variables such as level, flow, pressure, temperature, pH or conductivity, are used to record process variables.
  • Actuators such as valves or pumps, via which the passage of a liquid in a pipe section or the level in a container can be changed, serve to influence process variables.
  • field devices are all devices which are used close to the process and which process or process-relevant information.
  • field devices are generally also those units which are connected directly to the field bus and serve for communication with a higher-level unit (for example remote I / Os, gateways, linking devices, etc.). A lot of! Such field devices are manufactured and sold by Endress + Hauser.
  • the higher-level units are control systems or control units, such as PLC (programmable logic controller) or DCS Distributed Contra! System).
  • the higher-level units serve, among other things, for process control, process visualization, process monitoring and commissioning of the feeder units.
  • One or more such higher-level units can be connected directly to the fieldbus to which field devices are connected, and / or to a higher-level communication network.
  • a field device a plurality of parameters is provided. Parameters of a field device are, for example, a measuring range, limit values, units, etc.
  • the functionality of the field device can be adapted according to the respective intended application .
  • the configuration of a field device is usually carried out during commissioning of the field device. If changes are to be made during operation, some configuration can also take place during operation. Changing, activating and / or deactivating parameters of a field device is done by a write access to the parameters. By a read access parameters of the field device can be read, a change of the parameters does not take place.
  • operating programs For accessing parameters of field devices, in particular for reading and writing parameters from fidatories, operating programs, which are also referred to as operating tools (or operating tools), are provided.
  • Such operating tools can be used on the field device itself, on a higher-level unit and / or on an operating device, such as a portable personal computer (laptop), a portable handheld device (Handheld), a PDA (English: Personal Digital Assistant; Personal Digital Assistant), etc., to be implemented.
  • An access to parameters of a field device via the operating tool can be automated or personally by a user in the context of an application.
  • Operating tools typically provide a user interface for a user who wants to access parameters from a tester.
  • a communication connection between an operating device (eg personal computer, portable handheld terminal or PDA) and the field device is established either via the fieldbus to which the relevant field device is connected, or directly via a corresponding service interface of the field device.
  • An operating tool implemented on the field device itself enables a user on site to access the field device.
  • Operating tools can also have other functions in addition to the explained access to field devices. So far, access rights are statically defined in a field device, which means in particular that once defined or defined access rights to parameters of the field device remain unchanged in time (provided they are not changed again). During the commissioning of a field device, a parameter change is relatively uncritical because it does not directly affect the process of a plant.
  • a field device In a plant of process automation technology, a field device is usually not in communication with one but with several operating tools. Coordination of the accesses from the various operating tools often does not take place. This can lead to two operating tools accessing parameters of a field device at the same time or in such short intervals of time that unpredictable behavior and / or an error occur in the current application. For example, the case may occur that a first operating tool accesses the field device and loads all or part of the parameters of the field device to the associated processor unit on which the operating tool is implemented. This data is then available as offline data, which means that a change of the same (in the processor unit) does not directly affect the associated parameters in the field device. The parameters are then changed offline, for example, by the operating tool and then loaded back into the field device.
  • the changed parameters are then available as online data in the field device.
  • a parameter change in made the field device it may be the case that the parameter change of the first or the second operating tool is inadvertently overwritten or that the parameter change of the first operating tool is not compatible with the parameter change of the second operating tool. This can lead to unpredictable behavior of the process or to the occurrence of errors.
  • the object of the present invention is to provide a method and a field device by which errors which may occur when accessing the field device can be prevented more effectively.
  • the object is achieved by a method according to claim 1 and by a field device according to claim 12.
  • Advantageous developments of the invention are specified in the subclaims.
  • a method for operating, in particular for configuring, a field device of the process automation technology that is in communication with at least one operating tool is provided.
  • the access granted by the field device depends on the particular operating tool that makes the access request and on the operating state in which the field device is located.
  • the accesses or access rights to be granted: the functions that the respective operating tool has in relation to access to the field device (in particular with respect to a Providing access to parameters of the field device); the control functions or control tasks that the operating tool takes on within the system; the hardware on which the operating tool is implemented; as well as the communication connection via which the operating tool communicates with the field device.
  • the access rights for various operating tools can different from each other.
  • the present invention can further prevent a parallel, that is to say a time-overlapping or temporally overlapping, access of a plurality of operating tools to the field device.
  • a parallel that is to say a time-overlapping or temporally overlapping
  • the feid device is in communication communication with a plurality of operating tools, wherein the access granted by the field device differs in at least two of the operating tools.
  • operating tool generally refers to a program or tool by means of which access to field devices, in particular access to parameters of field devices, can be carried out In the present context, it is irrelevant on which type of hardware As explained above, the operating tool may be mounted, for example, on the field device itself, on a higher-level unit, and / or on an operating device such as a portable personal computer (laptop), portable handheld device, PDA, etc In this case, a plurality of operating tools can be implemented on different or else also on the same hardware, such as a personal computer or a computer unit ) of parameters of the field device dur be led. In addition, an operating tool can also have other functions. In particular, the individual operating tools that are in communication with the fiddle device may differ in the functions provided by them.
  • the communication connection between the operating tool and the feeder can be realized in different ways. For example, it can be wired or wireless over a fieldbus. This is the case, for example, when the operating tool is implemented on a portable personal computer or a PDA which is connected via a corresponding interface to the field bus of the field device. Alternatively, the communication connection be formed via a service interface of the field device to which a corresponding operating device, such as a portable handheld device, is connected. If the operating tool is implemented on a computer unit, it can also be connected to a higher-level network and communicate with the feeder via this network (and the fieldbus). Furthermore, the communication connection can run within the field device itself.
  • an operating tool implemented on the field device, a person can access the field device by operating a display and operating unit of the field device, in particular display, change, activate and / or deactivate parameters thereof.
  • an operating tool is used on the field device Field device itself implemented, fewer functions than for example by an operating tool, which is implemented on a computer unit or a personal computer provided.
  • An “access” comprises at least one access to parameters of the field device, which in particular comprises the writing (activating, deactivating and / or changing) and / or reading parameters of the field device
  • parameters of the field device may in particular be 'Audit Trair' data (German: trace back data), which documents the time sequence of parameter changes that affect the area of "engineering" and / or process data.
  • the field of "engineering” comprises, in particular, a field device configuration, a fieldbus configuration and / or a configuration of an application Parameters relating to the process data may in particular be units of the output measured values, status and diagnostic information, alarm and error messages, etc . be.
  • the access granted by the Fefdrift can be configured differently depending on the operating tool that makes the access request, and depending on the operating state of the field device. For example, in some situations (respective operating tool, respective operating state of the field device), any access to the field device may be blocked, while in other situations limited access is granted.
  • the granted access can also be dependent on other conditions. According to an advantageous development, it is provided that the access granted by the field device, depending on the operating tool that makes the access request, and / or depending on the operating state of the field device, includes only part of the parameters of the field device. As a result, differences between the individual parameters can also be taken into account.
  • critical parameters can be, for example, parameters of a function block (for example “Scaling Parameter”, “Channel Parameter”, etc.) implemented in the field device and incorporated into the process. Further, they may be parameters related to units or limits of output measurements, and / or, if the field device communicates over a fieldbus, parameters related to the bus configuration.
  • Access to critical parameters may, for example, be completely disabled in the "on control" mode or may only be authorized for qualified personnel, while access is granted to other parameters of the field device whose change does not affect the process Be parameters of the field device, which refer to a not integrated in the process function block of the field device, unless they affect the activation or integration of the same.
  • access to some parameters of the field device is only granted if the relevant operating tool fulfills one or more of the criteria specified above with respect to claim 1 with respect to operating tools, while accessing other parameters irrespective of the fulfillment of such criteria. In some situations (respective operating tool, respective operating state of the field device), access to all parameters of the field device can also be blocked.
  • the access granted by the field device depending on the operating tool that makes the access request, and / or depending on the operating state of the field device, only certain types of access includes.
  • Train accesses are understood to mean, in particular, read access and write access to parameters of the field device.
  • a write access comprises, in particular, the activation, deactivation and / or modification of one or more parameters. ter (s).
  • a write access may still be completely blocked while a read access is still granted
  • write access to parameters of the field device is only granted by an operating tool, if the respective operating tool meets one or more of the criteria set forth above with respect to claim 1 with respect to operating tools, while granting read access to parameters of the field device independently of the fulfillment of such criteria.
  • train raff types provided according to this development is combined with the further development explained above, which relates to granting access only for part of the parameters of the field device. For example, only one read access can be granted in the "on control" operating state to critical parameters, while other (uncritical) parameters are also granted write access.
  • the at least one operating tool transmits an identification of the operating tool to the field device when an access request is made.
  • the field device can recognize which operating tool, in particular which type of operating tool, makes the access request.
  • the field device then grants access in response to this identification and depending on the operating state in which the fiddle device is located.
  • the identification of the sender that is to say of the operating tool, is generally transmitted in the case of fieldbus systems (generally referred to as the identification procedure), thereby enabling a simple realization of the method according to the invention.
  • the associated accesses to be granted are defined in the field device for each identification for the different operating states of the field device (and, if appropriate, for other criteria to be considered). Such an assignment can be done in tabular form, for example. Alternatively, this assignment can also be based on predetermined algo- rithme ⁇ implemented in the feeder.
  • profile information is stored in the field device for the at least one operating tool, the profile information having information relating to the functions of the relevant operating tool with respect to accessing the apparatus, and the field device receiving an access request from a user Operating tool accesses the Prof decisivin- formationen this operating tool and granted in dependence on this profiling information access.
  • This development has the advantage that such profile information can be provided by a manufacturer of the operating tool. The user of the operating tool then only has to load the profile information into the field device. In the field device, if an access request is made by an operating tool, depending on the associated profile information based on predetermined criteria, it can then be determined which accesses are granted in which operating states of the field device.
  • This determination can be made in the field device by a tabular assignment of the accesses to be granted to the respective profile information zones and operating states or by means of predetermined algorithms which are implemented in the field device and which are to be applied to the respective profile information and operating states.
  • This development accordingly makes it possible to define generic tabular allocations or even algorithms in the field device, by means of which it is possible to determine for different operating tools which accesses are to be granted in each case. If a uniform form for the presentation of the profile information is selected across manufacturers, the integration of operating tools from different manufacturers into the method according to the invention is made possible in a simple manner.
  • the profile information in addition to the information regarding the functions of the respective operating tool with respect to access to field devices also have more information.
  • identifications of the associated assessment tools are assigned to the profile information.
  • the field device can, upon receipt of an access request (with the identification of the relevant operating tool), use the identification to assign the associated profile information.
  • profile information for operating tools can be found in the document "Foundation® Fieldbus Host Interoperability Support Test Profile and Procedures; Document FF-569; May 16, 2007; Revision: FS 2.0 "(hereafter: FF document) or according to subsequent revisions of this FF document
  • the FF document defines, among other things, properties that can be implemented in an operating tool (also called a host)
  • a test tool may be specified to have one of the properties defined in the FF document if it has passed the associated tests, and in particular to be validated by each test Whether the respective operating tool satisfies interoperability requirements in interaction with other operating tools and field devices.
  • various profiles (“host profile classes") are provided, into which operating tools are classified according to their properties , The manufacturers of operating tools usually provide profile information according to this FF document, so they do not have to be created separately.
  • profile information can be used across manufacturers and has been verified by tests according to the FF document. If corresponding profile information is or will be defined in other bus systems, such as Profibus®, HART®, etc., these can be used in a corresponding manner.
  • this development is realized in such a way that a further operating state is provided in the field device, in which access for other operating tools is blocked or made possible only to a limited extent. Upon receipt of an access request from an operating tool, the field device is switched to this further operating state.
  • the blocking or restriction of the access to the field device can only be canceled by the operating tool which has set the access request, on the basis of which the access was blocked or restricted. This ensures that the access of individual operating tools can be completed in each case without this process being disturbed by other operating tools. Furthermore, it can be prevented that overlap temporally two or more accesses that are in danger of mutually influencing or disturbing each other.
  • the operator tool, along with the message that the blockage or restriction is to be lifted also transmits its identification.
  • the "session" with the field device is terminated by the operating tool after the access procedure has been processed, whereby it can be provided that the blocking or restriction of the access is canceled at the same time when the session is terminated by the operating tool in the field device.
  • the field device upon receipt of an access request from a predetermined operating tool, grants access (by means of this predetermined operating tool) independently of whether an access request has been made in parallel by another operating tool.
  • certain parameter settings that are important for the ongoing process can be performed by a predetermined operating tool without or with only a slight time delay.
  • Such important parameter settings may relate, for example, to appiication-related parameters, such as units of measured values, limit values of measured values and / or link information (association information), etc.
  • association information association information
  • an access request is received from the predetermined operating tool, an optionally just processed access request of another operating tool is terminated prematurely.
  • provision may be made for a currently processed access request from another operating tool to be terminated prematurely only if the predetermined operating tool, together with the access request, sends a message to the effect that it is a hasty or important access request.
  • Such a premature termination may be realized, for example, such that the original parameter settings are maintained and the other operator tool must retry the access request at a later time.
  • the field device if an access is blocked or only made possible to a limited extent, indicates a corresponding message about the blocking or restriction.
  • an identification of the operating tool is provided in the message, which has made the access request, on the basis of which the access was blocked or restricted.
  • the indication of the message can be made, for example, on a display of the field device.
  • the field device sends a message with the message regarding the blocking or restriction to this other operating tool (for example via a fieldbus or a service interface).
  • the presence of such a message has the advantage that a user or an application is immediately informed that access at the respective time is not or only to a limited extent possible.
  • further information such as the estimated time period of access, can be specified.
  • operating states of the field device have at least one of the following operating states: an operating state "offline” in which the field device is not connected in a plant of process automation technology. is closing; an operating state “online” in which the feeder is connected in a plant of the process automation technology; a “commission” operating state in which parameters of the field device are set before the field device is integrated in a process; "Non-commission” operating condition (German designation: pre-commissioning operating state) in which there is a field device that has never been put into service before; an "off-contro! operating state, in which the field device is "online", but it is not yet integrated into a process; an "on-control” operating state, in which the field device is “online” and integrated in a process; and a disabled or restricted access mode in which the field device is operated when an access request is made to the FeS device by an operator tool.
  • an operating state "offline” in which the field device is not connected in a plant of process automation technology. is closing
  • an operating state “online” in which
  • Connected in a plant of process automation technology means that the field device in the system is connected with respect to its hardware. For a wired connection of the feeder, this means, for example, that the field device is wired.
  • the field device can be "online” or “offline” during the "commissaire” operating state.
  • Integrated in a process in this context means that the field device actually interacts with the process (a plant of the process automation technology), that is to say In the case of a sensor as a field device, this may include, for example, acquiring measured values and transmitting them to other devices of the installation in which the measured values are utilized of an actuator as a field device, the interaction with the process may include affecting the process, such as changing a flow rate in a pipeline section in response to control signals received, as will be understood, a field device may also be in parallel in a plurality of the above-indicated operating conditions operate. According to an advantageous embodiment, it is provided that in the case of an access request initiated by a person, that person must identify himself and the access granted by the field device depends on the identity of this person.
  • predetermined access rights can be defined for different people or groups of people.
  • the access granted by the field device then takes place only within the framework of these predetermined access rights.
  • the present invention further relates to a feeder of process automation technology, which has a processor unit.
  • the processor unit is adapted in such a way that, in the case of an access request from an operating tool to the feeder, the access to the field device granted by the processor unit depends on the respective operating tool which makes the access request and on the operating state in which the feeder is located.
  • the term "processor unit” generally denotes a data-processing unit, such as a CPU, a plasma processor, etc.
  • the functionality implemented in the field device and the corresponding interaction between operating tool and field device, which are provided according to the present invention and / or according to one of the developments, can be described, for example, in a device description (DD)
  • the device description is usually created in text-based form (eg in ASCII text format) using various device description languages, such as the HART® Device Description Language, Foundation Fieldbus Device Description Language, depending on the used FeIdbus system , Electronic Device Description Language (EDDL), Fieid Device Configuration Markup Language and GSD / Profibus (GSD: General Station Description).
  • EDDL Electronic Device Description Language
  • GSD General Station Description
  • an interpreter is provided by which the information provided in the device description is interpreted or translated and provided to the operating tool.
  • a device driver in particular a "Device Type Manager”
  • DTM Device Driver of the feeder
  • a device driver in particular a "Device Type Manager”
  • a device driver is a device-specific software that encapsulates data and functions of the field device and provides graphic operating elements.
  • An operating tool must in this case be designed such that it forms a suitable frame application for the device driver.
  • a "Device Type Manager” requires an FDT Frame Application Tool (FDT: Field Device Tool). "An operator tool that makes up such an FDT Frame Application is, for example,” FieldCare® “from Endress + Hauser.
  • Fig. 1 shows a schematic representation of a fieldbus network for explaining an embodiment of the present invention.
  • Fieldbus F operates according to the Profibus® standard.
  • the control unit PLC is a master, while the field devices F1, F2 and F3 are slaves.
  • the communication between the control unit PLC and the field devices F1, F2 and F3 takes place according to the Profibus® standard.
  • the fieldbus F is connected via a gateway G to a higher-level network N.
  • further fieldbuses may also be connected to the higher-level network N.
  • a first personal computer 2 is connected, on which a first operating tool is implemented.
  • At the parent network N is further connected to a second personal computer 4, on which a second operating tool is implemented.
  • the field device F3 is visited by a service person 6 who carries a handheld terminal 8 with him.
  • a third operating tool is implemented by which the reading and writing of parameters of the feeder F3 is enabled.
  • the handheld terminal 8 as shown in Fig. 1, connected to a service interface 10 of the field device F3.
  • the first operating tool predominantly assumes tasks of process control and regulation.
  • the first estimation tool monitors measured values as well as status and diagnostic information in the system.
  • the first operating tool has visualization and monitoring systems.
  • Such an operating tool is provided by the company Endress + Hauser, for example, by the operating tool "FietdControl®.”
  • the first operating tool takes on the configuration of an application (English: "application configuration"), which in particular means the interconnection of individual function blocks Field devices includes such that thereby a desired application is realized.
  • a software, via which such an configuration of an application is feasible, is provided by the company Endress + Hauser, for example, by the operating tool "Application Designer®".
  • the second operating tool mainly takes over asset asset management tasks.
  • Such an operating tool is provided by the company Endress + Hauser, for example, by means of the operating tool "FieldCare®.”
  • parameters of the individual feeder units can also be read and written using the second operating tool.
  • access to the field devices of the system and in particular to the field devices F1, F2 and F3 can take place both from the first and from the second operating tool.
  • An access includes in particular the writing and reading of parameters of the relevant field devices.
  • the field device F3 can be accessed.
  • a fourth operating tool the is implemented on the feeder F3 itself, the field device F3 be accessed, for which purpose a person must operate a (not shown) display and control unit of the field device F3.
  • the first operating tool sets a write request for a parameter of the field device F3 to the field device F3. Together with the write request it transmits its identification. On receipt of the write request, any write access for other operating tools is blocked in the field device F3.
  • the field device F3 has stored in a memory profile information about the various operating tools in the system. The profile information is in each case assigned an identification of the associated operating tool. The identifications of the various operating tools are assigned only once within the system. The field device F3 can therefore access the associated professional information via the identification obtained. Depending on the profile information and depending on the operating state in which the feeder F3 is located, access rights are defined in the field device F3.
  • the field device in question is currently in an "on-control" mode of operation
  • the relevant parameter of the field device to be changed by the received write request is not critical to the current application, that is, a change thereof does not directly affect the
  • the write access by the first operator tool is covered by the access rights predefined in the fiddle device and can therefore be executed without restriction.
  • a read request of a parameter is made to the field device F3 by the second operating tool.
  • the field device F3 checks whether the read request is encompassed by the predefined access rights, depending on the operating state in which the field device F3 is located and depending on the profile information of the second operating tool. Reading parameters here is not critical for the process. Read access is included in the predefined access rights and can be performed without restriction.
  • the service person 6 also wishes to carry out a change of a parameter of the feeder F3 via the handheld terminal 8 and thus via the third operating tool.
  • the field device F3 After placing a write request from the third Constechnik- tool to the Fetd réelle F3, the field device F3 checks depending on the operating state in which the field device F3 and depending on the profile information of the third operating tool, whether the write request of the predefined access rights becomes. As explained above, the field device F3 is in an operation state with write access disabled. The field device F3 is therefore blocked for another write. The service person 6 is informed both via an indication of the field device F3 and via a display of the handheld terminal 8 that the feeder F3 is currently locked by the first operating tool and a write access is not possible. As soon as the session with the first operating tool has ended, the blocking in the field device F3 is released. A corresponding message is displayed both on the display of the Feiduzes F3 and on the display of the manual control unit 8.
  • the present invention is not limited to the embodiment explained with reference to FIG.
  • the present invention is applicable not only to sensors and actuators as field devices. Rather, the advantages mentioned above also result when using remote I / Os, gateways and linking devices.
  • a remote I / O which is connected to a field bus and is connected via analog lines to one or more simple field devices, be operated according to the inventive method.
  • another bus system such as a HART® bus system, a Foundation® Fieldbus bus system, etc., can also be used.

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Abstract

La présente invention concerne un procédé pour faire fonctionner un appareil de terrain (F1 ; F2 ; F3) de la technique d'automatisation des processus, qui est en liaison de communication avec au moins un outil de manipulation. Dans le cas d'une demande d'accès d'un outil de manipulation sur l'appareil de terrain (F1 ; F2 ; F3), l'accès accordé par l'appareil de terrain (F1 ; F2 ; F3) dépend alors de l'outil de manipulation particulier qui pose la demande d'accès et de l'état de fonctionnement dans lequel se trouve l'appareil de terrain (F1 ; F2 ; F3).
EP09715678A 2008-02-25 2009-02-05 Procédé pour faire fonctionner un appareil de terrain Ceased EP2247987A1 (fr)

Applications Claiming Priority (2)

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DE200810010864 DE102008010864A1 (de) 2008-02-25 2008-02-25 Verfahren zum Betreiben eines Feldgerätes
PCT/EP2009/051335 WO2009106414A1 (fr) 2008-02-25 2009-02-05 Procédé pour faire fonctionner un appareil de terrain

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EP2247987A1 true EP2247987A1 (fr) 2010-11-10

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US (1) US9141106B2 (fr)
EP (1) EP2247987A1 (fr)
DE (1) DE102008010864A1 (fr)
WO (1) WO2009106414A1 (fr)

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US9141106B2 (en) 2015-09-22
US20110004685A1 (en) 2011-01-06
DE102008010864A1 (de) 2009-08-27
WO2009106414A1 (fr) 2009-09-03

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