Markus Rentschler

Duale Hochschule Baden-Württemberg Mannheim

Elektrische Verbindungen sind wesentliche Bestandteile jedes Automati­sierungssystems. Dieser Beitrag stellt eine Modellierungsmethodik und erste Bibliotheken elektrischer Schnittstellen für Automatisierungs­geräte vor, die mit dieser Methodik ent­lang vorhandener Standards für elektrischer Schnitt­stellen entwickelt wurden. Diese Bibliotheken könn...

The testbed Edge Configuration was established to prepare the standardization in the context of the manufacturing industry with respect to the emerging edge computing technology. The testbed does not address edge computing technology in itself but focuses on edge configuration. For this purpose, concepts will be developed, practically implemented a...

The testbed Edge Configuration was established to prepare the standardization in the context of the manufacturing industry with respect to the emerging edge computing technology. The testbed does not address edge computing technology in itself but focuses on edge configuration. For this purpose, concepts will be developed, practically implemented a...

Recently, FPGA-based NCS applications have been widely used. Industrial environments have a lot of electromagnetic interference which may induce transient and permanent faults. As a result, Fault-Tolerant FPGA based NCS applications are required. In this paper, an NCS model composed of a combination of S2A architecture and In-Loop architecture conn...

One of the key ideas of Industry 4.0 is the availability of a digital representation of each industrial asset within an Industry 4.0 network, the “Asset Administration Shell” (AAS). The AAS combines data related to an asset and software interfaces which provide access and explorability of the asset data in the network. Because an accepted standard...

In factory automation (FA) and process control, networks and protocols of the operation technology are more and more merged with those of the information technology (IT). The requirements of operational technology (OT) and IT are different. Modern networks and protocols for communication in FA and process control systems must take care of the coexi...

Vorwort Zum 20. Mal trifft sich die Community zum Leitkongress der Mess- und Automatisierungstechnik AUTOMATION im Juli 2019. Unter dem Motto „Autonomous Systems and 5G in Connected Industries“ erwartet Sie ein anspruchsvolles Programm! Wie wirken sich künstliche Intelligenz und autonome Systeme auf die Fertigungs- und Prozessautomation der Zukunft...

Applications in process and factory automation increasingly use wireless technologies. In the past, the existing wireless solutions often could not offer sufficient performance with respect to real-time and reliability requirements for fast closed-loop control applications. As a result, low latency and highly synchronous wireless communication tech...

To simplify the engineering of field devices, almost every fieldbus organization has developed its own Device Description Language (DDL), a formal language to describe the services and configuration options of field devices. The DDLs are usually tailored to the needs of the associated fieldbus engineering tool chain and unusable in tool chains of o...

A Device Description Language (DDL) is a formal language to describe the services and configuration options of field devices in process and factory automation. Almost every fieldbus organization has developed its own standard, usually tailored to the needs of the associated fieldbus engineering tool chain. But these Device Description (DD) files ar...

Control applications in factory automation utilizing wireless technologies require well-defined and constant communication performance with respect to cycle time, determinism and availability. These requirements are hard to meet using standard wireless communication technologies in the presence of interferers and challenging fading channels. The re...

In the context of the Industry 4.0 initiative, Cyber-Physical Production Systems (CPPS) or Cyber Manufacturing Systems (CMS) can be characterized as advanced networked mechatronic production systems gaining their added value by interaction with the ambient Industrial Internet of Things (IIoT). In this context appropriate communication technologies...

Factory automation applications operating on wireless communication systems may exceed the coverage area of a single base station, requiring the capability of device movement between multiple base stations. Roaming is a feature that allows such wireless device mobility between base station cells, but cyclic process data communication between PLC on...

Recently, FPGA-based NCS applications have been widely used. Industrial environments have a lot of electromagnetic interference which may induce transient and permanent faults. As a result, Fault-Tolerant FPGA based NCS applications are required. In this paper, an NCS model composed of a combination of S2A architecture and In-Loop architecture conn...

Die Inbetriebnahme oder der Austausch verschiedener vernetzter Komponenten in industriellen Netzwerken setzt immer eine Erstkonfiguration der betroffenen Geräte voraus. Diese Erstkonfiguration von industriellen Automatisierungsgeräten mit IP-Zugangsparametern ist immer noch sehr heterogen durch inkompatible Ansätze gelöst, wobei einem einheitlichen...

The ability to remotely discover and configure devices in an automation network without the need for prior knowledge of the network topology or the identities of hosts and servers is a key requirement for industrial networks and cyber-physical systems. The Dynamic Host Configuration Protocol (DHCP) as a UDP-based standardized network protocol becam...

The industrial wireless automation sector exhibits a huge market growth in the last years. Today, many appli-cations already use wireless technologies. However, the existing wireless solutions do not yet offer sufficient performance with respect to real-time and reliability requirements, particularly for closed-loop control applications. As a resul...

Parallel redundant point-to-point transmission utilizing a dual-radio wireless infrastructure has been identified as a powerful approach to improve the performance of wireless communication. This method can be applied for every existing wireless standard, but has not been deeply researched so far. To fill this gap, an OMNet++ simulation model for I...

A powerful approach to improve the performance of wireless communication is the parallel redundant transmission with dual-radio wireless devices. To further verify this approach in this work, an OPNET simulation is performed on a star-topology WNCS workcell with 30 sensor and actuator pairs that are equipped with dual-radios for parallel redundancy...

Downtimes of failed devices in an industrial plant must be kept to a minimum to achieve high system availability. Since failures are often caused by transient hardware- or software faults, a well-defined System Self Diagnosis (SSD) functionality is an important feature for the effective long-term operation of industrial plants. To achieve effective...

Applying multiple redundant and diverse communication channels is an established method to achieve an improved overall communication channel. When applied for packet-based data transmission over channels with strongly nondeterministic behaviour due to environmental influence, such as Wireless Communications, timing performance can be greatly improv...

Redundancy techniques based on the combination of multiple diverse communication channels are an established countermeasure to improve performance characteristics of wireless communication systems. Besides parallel redundancy in the space and frequency domain, serial redundancy in the time domain can be utilized. It is known that the parallel appro...

The "Parallel Redundancy Protocol" (PRP) according to IEC 62439-3 realizes active network redundancy by packet duplication over two independent networks that operate in parallel. It has been specifically designed for industrial networks to meet highest availability requirements. In case of a single network failure, seamless redundancy is provided f...

The application of the "Parallel Redundancy Protocol" (PRP) according to IEC 62439-3 with two diverse redundant wireless channels achieves an improved overall wireless communication channel. Performance parameter like jitter and reliability increase significantly compared to the single wireless channels. In this work, a series of measurements on a...

In the case of failing equipment in industrial plants, the replacement time and effort must be kept at a minimum to increase the overall system availability. A well-designed Faulty Device Replacement (FDR) concept is therefore a central issue to the effective operation of industrial plants. Network enabled devices supporting FDR with minimum subseq...

WLAN according to standard IEEE 802.11 is widely regarded unsuitable as communication channel for real-time and safety applications. Non-determinism and interference liability leads to packet loss, exceeded and variable latency times due to retransmissions. This work proposes a method that compensates such consequences of stochastic channel fading...

PROFINET IO is designed with a modular structure of the IO devices. Certified modular PROFINET IO devices are usually shipped with a General Station Description (GSD) file that does not contain the actual module configuration of the IO device. With common appliances the modules must subsequently be configured manually in the engineering tool. This...

Ethernet ring redundancy is becoming a commodity in Industrial Ethernet environments. There are many ring redundancy protocols in existence, both standardized and proprietary. They all share the common disadvantage, that they can sustain only one fault in the network structure. A second fault results in parts of the network being unavailable. In th...

In modern communication systems based on Ethernet technology, the use of physical ring structures and ring redundancy protocols has been common for some time in the past. A challenge remains the configuration of such a redundancy protocol on each device with the networks stretching out over large areas, like in offshore wind power stations, where e...