A review of the fieldbuses

Thomesse, Jean-Pierre

doi:10.1016/s1367-5788(98)00003-0

Cited by 75 publications

(25 citation statements)

References 11 publications

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“…2) Bus Access: When fieldbus was first developed, it was viewed as a wiring simplification solution and its implementation was treated as a media access problem [20]. While this disregarded much of the application level requirements that have since originated, media access is still an important part of fieldbus operation, especially with respect to maintaining determinism.…”

Section: A Fieldbus Operation 1) Network Stackmentioning

confidence: 99%

“…Each bus master can poll other devices and request necessary information as well as allow the devices to reply before passing the token on to the next master. This can result in a data mismatch between bus masters if they each request the same data from a device and the state of the data changes between the requests [20]. Variations of the client-server model are also implemented, such as client-multiserver in which the server acts as a proxy and obtains the required information through its own client-server requests to other devices; third-party clientserver, in which the principal server has another server reply to the request from the client on its behalf and multiconfirmation client-server in which the server may reply to the client several times in order to fulfil the requested service.…”

Section: ) Information Distributionmentioning

confidence: 99%

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Introduction to Industrial Control Networks

Galloway

Hancke

2013

IEEE Commun. Surv. Tutorials

416

193

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Abstract-An industrial control network is a system of interconnected equipment used to monitor and control physical equipment in industrial environments. These networks differ quite significantly from traditional enterprise networks due to the specific requirements of their operation. Despite the functional differences between industrial and enterprise networks, a growing integration between the two has been observed. The technology in use in industrial networks is also beginning to display a greater reliance on Ethernet and web standards, especially at higher levels of the network architecture. This has resulted in a situation where engineers involved in the design and maintenance of control networks must be familiar with both traditional enterprise concerns, such as network security, as well as traditional industrial concerns such as determinism and response time. This paper highlights some of the differences between enterprise and industrial networks, presents a brief history of industrial networking, gives a high level explanation of some operations specific to industrial networks, provides an overview of the popular protocols in use and describes current research topics. The purpose of this paper is to serve as an introduction to industrial control networks, aimed specifically at those who have had minimal exposure to the field, but have some familiarity with conventional computer networks.

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Section: A Fieldbus Operation 1) Network Stackmentioning

confidence: 99%

Section: ) Information Distributionmentioning

confidence: 99%

Introduction to Industrial Control Networks

Galloway

Hancke

2013

IEEE Commun. Surv. Tutorials

416

193

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“…CASNET adopts simple three layers for a simple configuration proposed by IEC, as opposed to selecting the hierarchical model suggested by the OSI-7 layer [14,15]. However, it appends on the fourth layer, referred to as the transport layer, to package and send/receive the message in CASNET device, as shown in Figure 1.…”

Section: Casnet Protocolmentioning

confidence: 99%

FPGA Implementation of Real-Time Ethernet for Motion Control

Chen

Chunxiang

Tao

et al. 2013

Advances in Mechanical Engineering

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This paper provides an applicable implementation of real-time Ethernet named CASNET, which modifies the Ethernet medium access control (MAC) to achieve the real-time requirement for motion control. CASNET is the communication protocol used for motion control system. Verilog hardware description language (VHDL) has been used in the MAC logic design. The designed MAC serves as one of the intellectual properties (IPs) and is applicable to various industrial controllers. The interface of the physical layer is RJ45. The other layers have been implemented by using C programs. The real-time Ethernet has been implemented by using field programmable gate array (FPGA) technology and the proposed solution has been tested through the cycle time, synchronization accuracy, and Wireshark testing.

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“…Point-to-point or direct connections are not considered suitable any more for systems composed of many devices because the number of cables is increasing proportional to the square of the number of devices. In order to solve this problem, various serial communication networks have been designed and implemented to provide reliable and efficient communication paths for data exchange among the system components; such networks are called fieldbuses (Schumny, 1998;Thomesse, 1998) A fieldbus is a type of real-time communication system based on a layered structure deduced from the seven layers Open System Interconnection (OSI) model (Zimmermann, 1980). Fieldbuses include Profibus, World FIP, Fieldbus Foundation, Controller Area Network (CAN) and LonWorks (Choi, et al, 2000;Lee, et al, 2004;Almedia, et al, 2002).…”

Section: Introductionmentioning

confidence: 99%