WO2003027984A2 - Verfahren zum überwachen einer automatisierungsanlage - Google Patents
Verfahren zum überwachen einer automatisierungsanlage Download PDFInfo
- Publication number
- WO2003027984A2 WO2003027984A2 PCT/DE2002/003650 DE0203650W WO03027984A2 WO 2003027984 A2 WO2003027984 A2 WO 2003027984A2 DE 0203650 W DE0203650 W DE 0203650W WO 03027984 A2 WO03027984 A2 WO 03027984A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- state
- transition
- message
- message telegram
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
Definitions
- the invention relates to a method for monitoring an automation system with a control device and several terminals.
- the invention relates to the reliable detection of several signal changes in a message telegram between the terminal and the control device in an automation system according to the preamble of claim 1.
- Signal changes are recorded by the end devices and reported to one or more control devices by means of a message telegram, where the reported signal level is displayed and processed.
- a second message for example with the content that the signal has changed again in the meantime, can only be sent again when the control device has confirmed the receipt of the first message to the terminal. This confirmation is made with an acknowledgment message.
- a single signal is reported in a message telegram, the last two signal changes are recognized in the prior art.
- the general conditions for this are: a) Additional information "overflow" is provided in the message telegram, which indicates that one or more signal changes could not be reported; b) a message was received with the same signal state as the signal last reported and stored in the control unit.
- message telegrams are used that contain more than one signal, namely eight signals, for example.
- the additional information in the form of the "overflow flag" in the message telegram and the fact that a message telegram was received represents a one-to-many relationship for several signals.
- the object of the present invention is to provide a method by means of which at least some of the previous changes of state can also be subsequently reconstructed.
- the message telegram is expanded in order to inform the control unit, if necessary, that a further transition has taken place beyond the transitions readable from the message telegram. For this, one or two further binary information items are provided per signal. If the signaling telegram also transmits the current state of the terminal, it can be concluded from the comparison of the previous with the current state of the terminal that further transitions or a plausibility check of the information transmitted by the signaling telegram can be carried out.
- the method according to the invention for monitoring an automation system which comprises at least one terminal device that can assume at least two status values and that outputs a message telegram that depends on the at least two status values, and a control device that reads the message message from the at least one terminal device, wherein the at least one terminal only outputs a further message telegram after it has received an acknowledgment signal from the control device, is characterized in that the message telegram has at least one first transition component which indicates a transition from a first state value to a second state value of the at least two state values, and contains at least one second transition component, which indicates a transition from the second state value to the first state value of the at least two state values.
- the message telegram preferably has at least one status component that indicates a current one of the at least two status values of the terminal, the control device compares the current status value of the terminal with a previous status value of the same terminal and is dependent on the comparison result and the first and / or second transition component, state transitions of the respective terminal are determined before the current state value is reached.
- At least one associated value information component is provided for associated value information in the message telegram, which component creates an association of at least one of the transition components and the associated value information.
- All components of the at least one message telegram are preferably represented in binary form.
- control device can be used on the basis of the received signal state S1 and the event Information EOl and ElO can simulate the signal curve of the last two signal changes.
- FIG. 1 shows the sequence of changes in state and the associated representation during a state transition according to the prior art.
- FIG. 2 shows the sequence of state changes and the associated representation in the case of several state transitions according to the prior art.
- FIG. 3 shows the sequence of changes in state and the associated representation in the case of a plurality of message telegrams and a number of state transitions according to the prior art.
- FIG. 4 shows the sequence of changes in state and the associated representation in the case of a plurality of message telegrams and a plurality of state transitions in accordance with the invention.
- FIG 1 an automation system with two terminals 1 and 2 and a control device 3 is shown.
- the control unit comprises an input keyboard 4 and a screen for displaying signals and status information of the terminals 1, 2 connected to it and, depending on the scope of the automation system, further terminals, not shown.
- Each of the terminals 1 and 2 which generally perform special tasks in the automation system, can assume at least two different status values. These status values are communicated to control unit 3 as status information or as a notification of a transition between status values. divided, the communication between terminal 1 or 2 and control device 3 is indicated in the figures as a double arrow.
- the control unit 3 reads in the different, asynchronous messages from the individual terminals, so that the personnel for monitoring the system have an overview of the overall state of the system and can intervene in a regulating manner via the control unit 3, if necessary. (Here and in the following "reading” means the recognition, recording and processing of messages from the end devices in the control device, without these messages first having to be called up at the respective end device, which is also possible, however.)
- the control unit should always display the current state of the terminal - with a time delay - and also at least the last transition cycle of the terminal ("0" -> "1”; "1" -> “0” or "1” -> "0”; "0” -> “1”).
- the second aspect is of particular importance.
- status messages so-called "events”
- FIG. 1 shows the sequence of several changes in the state of the terminal 1, the content of messages exchanged between the terminal 1 and the control unit 3 and the associated representation in the control unit 3 according to the prior art.
- This status value can, for example, when the
- Automation system is present or it may have been reached at a later time.
- the status value of the terminal 1 is not immediately known, and the original status value is only recognized by notifying the control device 3 of a change in the status of the terminal 1.
- the terminal 1 changes from a logic status value "0" to a logic status value "1". This transition triggers the output of a message telegram by the terminal 1.
- the message telegram u contains a state component S1, which is an identical image of the state value of the terminal 1. (For the sake of simplicity, a system is assumed here in which a signal can only assume two state values, but the invention is not restricted to this and the state component S1 can generally assume several state values.)
- the message telegram is read in by the control unit 3. The reading takes place over a certain period of time; it is indicated by an oblique arrow from a lower to an upper level in FIG. 1.
- the content of the message telegram is specified, which in this case only consists of the state component S1, the content of which is "1", ie. H. is the new status value that the terminal 3 has now assumed. Reading is ended at a time after tl.
- a signal D1 in the control device 3 which corresponds to a representation of the status value S1 of the terminal 1, is set from a logic status value "0" to a logic status value "1".
- a state value transition of the terminal in one direction corresponds to a transition of the signal Dl in the same direction.
- this is not a prerequisite for the implementation of the invention and it is clear to the person skilled in the art that the relationship between state S1 and representation - Dl signal can also be selected complementary.
- the duration of the processing steps is indicated by the horizontal arrow at the upper level. Only after completion of the processing steps does the control unit 3 send an acknowledgment signal to the sender terminal 1, with which it notifies the terminal 1 that the message telegram from the terminal 1 has been successfully read in by the control unit 3.
- the transmission of the acknowledgment signal also has a certain period of time, which is shown by an oblique arrow Q from the upper level to the lower level.
- the subsequent idle state of communication between terminal 1 and control unit 3 is indicated by a horizontal arrow at the lower level. During this time, the terminal 1 processes the
- FIG. 2 shows an expanded message telegram which enables communication between the terminal 1 and the control unit 3 at a higher rate of changes in the state value of the terminal 1.
- QTM acknowledgeledgment-triggered reporting
- a further component is included in the message telegram, which is designated by OV ("overflow").
- OV overflow
- Terminal 1 thus corresponds to the last reported one, and control unit 3 would not recognize a - already completed - state value transition of terminal 1.
- the component OV is set to "1" in the next message telegram, which indicates to the control unit 3 that, in addition to the notified transitions, a "hidden” transition has also taken place.
- the display signal is therefore set from “1” to "0".
- the display signal D1 is immediately turned on again Set “1” to account for the "hidden” transition.
- the resulting display signal D1 is shown in FIG. 2 at the top right.
- FIG. 3 shows an example with a state component S1 and a state component S2 of the message telegram.
- the second message telegram which is sent from the terminal 1 to the control unit 3 after t4, contains "1" and "1” as values for the components S1 and S2, since at this point in time both S1 and S2 have the value "1" to have.
- the "hidden” transition from S1 at t2 and t4 is thus lost to the system. This would not change even with an additional component OV of the message telegram, since the system could no longer clearly assign this component OV to one of the status values S1 and S2.
- FIG. 4 shows an embodiment for the reliable detection of state value transitions in the case of several possible states of the terminal in QTM processes by expanding the message telegram.
- further binary information is in principle necessary for each signal signaled.
- loading is the control unit not in the signaling state or is this information difficult to determine, e.g. B. in the start-up situation of the control unit, in addition to the respective status component, at least two further binary information items are required for each status component.
- the message telegram contains at least a first transition component EOl, which indicates a transition from a first state value to a second state value, and a second transition component ElO, which indicates a transition from the second state value to the first state value.
- Event bit EOl or ElO recorded. (The components Sl, EOl, ElO, S2, ... are listed at the bottom right of the figure.) After sending the message after the time tl, this event information is deleted. The subsequent events at t2 and thereafter are collected and reported to the control unit when the acknowledgment signal Q arrives. The control unit can emulate the signal curve of the last two signal changes on the basis of the received signal state S1 and the event information EOL and ElO.
- the components S1, EOL and ElO of the first state are therefore all at "0" at the time t0, as are the components S2, EOL and ElO of the second state of the terminal 1.
- the state value of S1 changes from “0” to "1”, so that Sl and EOl each take the value "1", all other variables keep the value "0” at.
- the value of EOl is reset to "0” because the transition has already been reported with the last message telegram, so that components S1, EOl and ElO have the value "1", "0” and "0” accept.
- the values in the message telegram at t5 indicate to the control unit 3 that the current status value Sl is "1" and that two transitions have taken place since the last message telegram.
- the display signal D1 for the first state of the terminal 1, as shown in FIG. 4 at the top right, can (qualitatively) reconstruct the course of the transitions, namely through the transitions "0" to “1", “1” to “0 "and” 0 "to” 1 ". This corresponds to the transitions from S1.
- the transition components EOl and ElO to Sl are reset to "0".
- FIG. 4 shows the values from Sl, S2, EOl to Sl, ElO to Sl, EOl to S2 and E10 to S2 together with the respective values of the other components.
- the system according to the invention can be expanded if the status component S1 or S2 of the message telegram indicates a current status value of the terminal 1 and the control unit 3 compares the current status value of the terminal 1 with a previous status value of the same terminal 1.
- state value transitions of the respective terminal 1 or 2 can be determined before the current state value is reached.
- accompanying information is provided which communicates further information to the control device.
- the accompanying information can contain a time that tells the control unit when the state change occurs at one
- At least one associated value information component is provided in the message telegram for such associated value information, which ensures the assignment of the corresponding transition components and the associated associated value information.
- the associated value information component for Sn is set to "1" if the time specification in the associated value information relates to a state transition of Sn. If other state transitions are also recognized in the terminal at the same time, further associated value information components are correspondingly set to "1". If the transition from Sn is the only state transition that was recognized at the time and only time information is output from the terminal to the control unit, only one associated value information component is set to "1", all others remain at “0". Modifications to the expansion of the message telegram by means of associated value information components are obvious to the person skilled in the art and will not be explained further.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02774423A EP1430458B1 (de) | 2001-09-26 | 2002-09-26 | Verfahren zum überwachen einer automatisierungsanlage |
DE50203983T DE50203983D1 (de) | 2001-09-26 | 2002-09-26 | Verfahren zum überwachen einer automatisierungsanlage |
DE10294374T DE10294374D2 (de) | 2001-09-26 | 2002-09-26 | Verfahren zum Überwachen einer Automatisierungsanlage |
AT02774423T ATE302452T1 (de) | 2001-09-26 | 2002-09-26 | Verfahren zum überwachen einer automatisierungsanlage |
US10/809,678 US6895369B2 (en) | 2001-09-26 | 2004-03-26 | Method for monitoring an automation unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10147490A DE10147490A1 (de) | 2001-09-26 | 2001-09-26 | Verfahren zum Überwachen einer Automatisierungsanlage |
DE10147490.3 | 2001-09-26 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/809,678 Continuation US6895369B2 (en) | 2001-09-26 | 2004-03-26 | Method for monitoring an automation unit |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003027984A2 true WO2003027984A2 (de) | 2003-04-03 |
WO2003027984A3 WO2003027984A3 (de) | 2003-08-14 |
Family
ID=7700371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003650 WO2003027984A2 (de) | 2001-09-26 | 2002-09-26 | Verfahren zum überwachen einer automatisierungsanlage |
Country Status (7)
Country | Link |
---|---|
US (1) | US6895369B2 (de) |
EP (1) | EP1430458B1 (de) |
CN (1) | CN100407240C (de) |
AT (1) | ATE302452T1 (de) |
DE (3) | DE10147490A1 (de) |
ES (1) | ES2248612T3 (de) |
WO (1) | WO2003027984A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003079120A3 (de) * | 2002-03-19 | 2003-12-04 | Siemens Ag | Verfahren zum überwachen einer automatisierungsanlage |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016101767A1 (de) | 2016-02-02 | 2017-08-03 | Phoenix Contact Gmbh & Co. Kg | Automatisierungsgerät |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3240046A1 (de) * | 1981-10-28 | 1983-05-05 | Schrack Elektronik-AG, 1121 Wien | Informationsuebertragungsanordnung |
US5469150A (en) * | 1992-12-18 | 1995-11-21 | Honeywell Inc. | Sensor actuator bus system |
US5691714A (en) * | 1994-12-09 | 1997-11-25 | Mehnert; Walter | Process for the serial transmission of digital measurement values |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3215081A1 (de) * | 1982-04-22 | 1983-11-03 | Siemens AG, 1000 Berlin und 8000 München | System zur uebertragung von informationstelegrammen |
DE58907152D1 (de) * | 1988-06-08 | 1994-04-14 | Landis & Gyr Business Support | Anordnung zur Überwachung, Steuerung und Regelung einer betriebstechnischen Anlage eines Gebäudeautomationssystems. |
JP2874032B2 (ja) * | 1990-11-27 | 1999-03-24 | 富士通株式会社 | ソフトウェア作業ツール |
CH685897A5 (de) * | 1993-01-26 | 1995-10-31 | Royale Consultants Ltd | Verfahren und Einrichtung zur bidirektionalen Informationsuebertragung (Protokoll) |
JP3191275B2 (ja) * | 1993-02-22 | 2001-07-23 | 横河電機株式会社 | スイッチング電源装置 |
ES2122057T3 (es) * | 1993-03-15 | 1998-12-16 | Telefunken Microelectron | Sistema para la recepcion de informacion de control hvac. |
US5765000A (en) * | 1994-12-29 | 1998-06-09 | Siemens Energy & Automation, Inc. | Dynamic user interrupt scheme in a programmable logic controller |
DE19801137A1 (de) * | 1998-01-14 | 1999-07-22 | Siemens Ag | Fehlersichere Prozesseingabe und Prozessausgabe |
KR100414932B1 (ko) * | 1998-01-24 | 2004-04-03 | 삼성전자주식회사 | 이동통신시스템의데이타통신방법 |
US6016523A (en) * | 1998-03-09 | 2000-01-18 | Schneider Automation, Inc. | I/O modular terminal having a plurality of data registers and an identification register and providing for interfacing between field devices and a field master |
-
2001
- 2001-09-26 DE DE10147490A patent/DE10147490A1/de not_active Withdrawn
-
2002
- 2002-09-26 DE DE50203983T patent/DE50203983D1/de not_active Expired - Lifetime
- 2002-09-26 DE DE10294374T patent/DE10294374D2/de not_active Expired - Fee Related
- 2002-09-26 AT AT02774423T patent/ATE302452T1/de not_active IP Right Cessation
- 2002-09-26 WO PCT/DE2002/003650 patent/WO2003027984A2/de not_active Application Discontinuation
- 2002-09-26 ES ES02774423T patent/ES2248612T3/es not_active Expired - Lifetime
- 2002-09-26 CN CN028190394A patent/CN100407240C/zh not_active Expired - Fee Related
- 2002-09-26 EP EP02774423A patent/EP1430458B1/de not_active Expired - Lifetime
-
2004
- 2004-03-26 US US10/809,678 patent/US6895369B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3240046A1 (de) * | 1981-10-28 | 1983-05-05 | Schrack Elektronik-AG, 1121 Wien | Informationsuebertragungsanordnung |
US5469150A (en) * | 1992-12-18 | 1995-11-21 | Honeywell Inc. | Sensor actuator bus system |
US5691714A (en) * | 1994-12-09 | 1997-11-25 | Mehnert; Walter | Process for the serial transmission of digital measurement values |
Non-Patent Citations (1)
Title |
---|
DEPPE M: "SIMATIC AND PROFIBUS-DP - THE IDEAL COMBINATION FOR DISTRIBUTED CONTROL" ENGINEERING AND AUTOMATION, SIEMENS AKTIENGESELLSCHAFT, BERLIN, DE, Bd. 18, Nr. 2, 1. M{rz 1996 (1996-03-01), Seiten 15-17, XP000587885 ISSN: 0939-2068 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003079120A3 (de) * | 2002-03-19 | 2003-12-04 | Siemens Ag | Verfahren zum überwachen einer automatisierungsanlage |
US7302301B2 (en) | 2002-03-19 | 2007-11-27 | Siemens Aktiengesellschaft | Method for monitoring an automation system |
Also Published As
Publication number | Publication date |
---|---|
ES2248612T3 (es) | 2006-03-16 |
EP1430458B1 (de) | 2005-08-17 |
CN100407240C (zh) | 2008-07-30 |
US6895369B2 (en) | 2005-05-17 |
CN1561510A (zh) | 2005-01-05 |
ATE302452T1 (de) | 2005-09-15 |
EP1430458A2 (de) | 2004-06-23 |
US20050027372A1 (en) | 2005-02-03 |
DE50203983D1 (de) | 2005-09-22 |
DE10294374D2 (de) | 2004-08-05 |
WO2003027984A3 (de) | 2003-08-14 |
DE10147490A1 (de) | 2003-04-17 |
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