摘要:
The invention relates to method for transmitting data in a redundant automation system (2), comprising a plurality of data transmission units (6) and a plurality of data processing units (4). The aim of the invention is to improve said method in such a way that data can be transmitted in an especially efficient manner with the hardware resources available. To this end, a data flow characteristic of the data transmission is continuously monitored on the respective data transmission units (6) and, depending on the data flow, is switched between the various operating modes in such a manner that an operating mode is adjusted when a synchronized data flow is detected on at least two data transmission units (6), said operating mode having a higher availability vis-à-vis the operating mode with a defective or one-way data flow on one of the data transmission units (6).
摘要:
The invention relates to a method for preventing malfunctions in a signal processing system according to which a sequence of initial values (w) are read-in by an arithmetic unit (P1; P2; P3). An additional separate trend value logic unit (4) determines a trend value (T) from the initial values (w). An output value (y) and a trend value (T) are formed by the arithmetic unit (P1; P2; P3). If the trend values (T) determined by the arithmetic unit (P1; P2; P3) and by the trend value logic unit (4) coincide, the output value (y) is output. The invention also relates to a processor system which is used for carrying out such a method and which comprises at least one arithmetic unit (P1; P2; P3), one comparison device (3; 5) and one trend value logic unit (4).
摘要:
A regulating system (100) can include a first controller configured to receive analog input (105, 106) and discrete input (110, 11), a second controller communicatively coupled to the first controller, and configured to receive analog input (105, 106) and discrete input (110, 111), a selector (150) communicatively coupled to the first controller and second controller and configured to select either one of the first controller and the second controller as a master for the regulating system (100) and state logic residing on each of the first controller and second controller to determine which of the first and second controller is the master.
摘要:
There is provided a system for transmitting signals between modules. The system includes: a sending module (A) configured to send a pulse signal having a certain period that represents certain information; and a receiving module (B) configured to receive the pulse signal from the sending module to detect the certain information. The sending module includes: a plurality of signal generators (1a,1b) provided in parallel so as to generate pulse signals in a time-division manner; a pulse signal converter (2a,2b,3) configured to convert the pulse signals generated by the signal generators into a single time series pulse signal; a relay (4) including: a common terminal (C), wherein the single time series pulse signal is inputted to the common terminal; a normally-closed terminal (NC) electrically connected to the common terminal in a non-driven state of the relay; and a normally-open terminal (NO) electrically connected to the common terminal in a driven state of the relay, wherein the single time series pulse signal is outputted from the normally-open terminal to the receiving module, a relay driving unit (6,7) configured to drive the relay only when all of the signal generators are operating to generate the pulse signals. The signal generators are configured to detect whether the single time series pulse signal is present in the normally-open terminal side and whether the single time series pulse signal is present in the normally-closed terminal side, so as to determine a failure in the single time series pulse signal that is outputted to the receiving module, and the signal generators stop generation of the pulse signals in determining that there is a failure in the single time series pulse signal.
摘要:
The invention relates to an input/output module (3) communicating with an automatism apparatus, said module comprising: two data input channels, each input channel including a volatile memory (31a, 31b) capable of storing data and a microcontroller (30a, 30b) for reading from/writing to said volatile memory (31a, 31b) data representative of the module inputs/outputs; a data output channel in which a logic function (32) of the AND or OR type is implemented for combining the data stored in parallel in the two volatile memories (31a, 31b) in order to send the same to the automatism apparatus.
摘要:
Das Safetymodul (MSM) weist ein Eingabeelement (MST) zur Auslösung einer sicherheitsrelevanten Eingabe (ML1) auf. Zwei Verarbeitungseinheiten leiten (MSM1;MSM2) aus der Eingabe jeweils ein Safety-Datenpaket (DSP1;DSP1a) ab und vergleichen diese miteinander. Über eine Datenschnittstelle (MSD) wird im Falle einer Übereinstimmung eines der Safety-Datenpakete (DSP1) zur Einspeisung in einen Kommunikationskanal (MK) für Datenpakete (DSP1...; DPH1...) bereitgestellt. Dies hat den Vorteil, dass erst bei Identität der Konvertierungsergebnisse der unabhängigen Verarbeitungseinheiten ein Safety-Datenpaket zur Einspeisung in einen Kommunikationskanal freigegeben wird. Vorteilhaft ist das Eingabeelement zur Auslösung einer sicherheitsrelevanten Eingabe (ML1) auf dem Safetymodul (MSM) ein Stop-Taster (MST), insbesondere ein Not-Aus-Taster. Bei einem mobilen Bedien- und Beobachtungsgerät (M) kann ein Safetymodul der obigen Art vorteilhaft direkt an einen internen Kommunikationskanal (MK) für Datenpakete angekoppelt werden. Dabei wird vorteilhaft über einen zusätzlichen Datenpaketselektor (DPS) die Reihenfolge einer Weiterleitung von Safety-Datenpaketen (DSP1) und HMI-Datenpaketen (DPH1) bis zur externen Datenschnittstelle (MD) anwendungsabhängig gesteuert.
摘要:
While a microcomputer 100A is executing a self-diagnosis (A), second diagnosis pulse output means 110B of a B-system microcomputer 100B is not used utterly. Further, during this time, the B-system microcomputer 100B does not execute a processing relating to at least the self-diagnosis (A) utterly. By shifting the timings for the A-system and the B-system to output the diagnosis pulses, independencies can be secured between respective diagnosis processing (self-diagnoses (A) and (B)). Thus, the independencies between the A-system and the B-system can be verified briefly by the self-diagnosis (A) on the A-system side. Further, first diagnosis pulse group are outputted parallel and simultaneously from first diagnosis pulse output means 110A. Thus, since cyclic control is not required for respective external input devices, it can be done to verify the independencies between the A-system and the B-system within a short period of time.