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1 – 10 of 23Fieldbus has been used to control self drill drive screw (SDDS), spot clinching and self pierce riveting tools mounted to a single robot with a tool changer. This has…
Abstract
Fieldbus has been used to control self drill drive screw (SDDS), spot clinching and self pierce riveting tools mounted to a single robot with a tool changer. This has reduced wiring complexity and enabled more robust cable dressing. The network, tool operation and tool changer are described.
Ethernet continues to evolve as a viable fieldbus technology for industrial automation. This paper seeks to discuss the development of the Common Industrial Protocol (CIP…
Abstract
Purpose
Ethernet continues to evolve as a viable fieldbus technology for industrial automation. This paper seeks to discuss the development of the Common Industrial Protocol (CIP) for Ethernet and standards with particular reference to time synchronisation, real time motion control and safety.
Design/methodology/approach
The CIP is introduced, with an overview of four network adaptations: CompoNet, DeviceNet, ControlNet, and EtherNet/IP. Developments in the EtherNet/IP implementation are discussed, along with key features. These include CIP Safety to meet the requirements for safety‐related control, CIP Sync for time synchronisation across CIP networks and CIP motion for real‐time closed loop motion control.
Findings
Standard, unmodified Ethernet will support time synchronisation, real time motion control and safety‐related applications with the CIP adaptation EtherNet/IP. The CIP enables complete integration of control with information, multiple CIP networks and internet technologies. CIP provides seamless communication from the plant floor throughout the enterprise, with a scalable and coherent architecture, incorporating functionality, such as safety, time synchronisation and motion control, hitherto only available with specialised or incompatible networks.
Practical implications
The implementations of CIP Sync, CIP Motion and CIP Safety and the corresponding standards provide functionality and flexibility not available from disparate specialist networks. The ability to fully integrate internet technologies and safety, synchronisation, motion and safety together is a distinguishing feature. Industrial Ethernet technologies vary in the ability to integrate to the same level of functionality and offer similar flexibility.
Originality/value
The development of CIP technology and the use of open standards are described. The opportunity to use the combination of an established automation protocol and standard, unmodified Ethernet provides potential cost benefits, flexibility, and innovative solutions, whilst providing integration, performance and cost advantages.
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Keywords
Richard Piggin and Vivek Hajarnavis
This paper aims to propose a model for the provision of EtherNet/IP device‐specific function blocks by discrete industry device vendors and to outline how multi‐vendor…
Abstract
Purpose
This paper aims to propose a model for the provision of EtherNet/IP device‐specific function blocks by discrete industry device vendors and to outline how multi‐vendor network environments can benefit from the use of function block programming to encapsulate code for configuring communication, diagnostics and visualisation tools.
Design/methodology/approach
The approach makes use of function blocks to facilitate simpler use of the EtherNet/IP protocol. The EtherNet/IP messaging mechanisms are described, along with the methodology for configuring communication for both time‐critical and non‐time‐critical messaging, including device‐specific status and diagnostic data. The same approach is utilised for communication to visualisation systems.
Findings
Validation of the model was found to make data transfer between controller and device easier and faster, owing to a reduction in the number of operations a programmer was required to implement. Implementation time was found to be just 6.25 per cent of that needed to achieve the same functionality without the use of function blocks.
Practical implications
The use of function blocks to describe EtherNet/IP communication was tested with a commercial product in an application environment, and subsequently adopted by multiple vendors. A reduction in technical support was noted owing to the use of identical interfaces for multiple device instances. With complete device functionality described and readily available to the end‐user, greater device functionality is utilised and more often may otherwise not have been implemented for time, cost, or complexity reasons.
Originality/value
In the discrete industry, it is uncommon for device vendors to provide device‐specific function blocks describing network communication interfaces and functionality, since they reside in the controller, not the device. This research presents a novel method that provides a consistent, yet flexible approach for the configuration of EtherNet/IP communication for differing devices from multiple vendors within a controller.
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Richard Piggin, Ken Young and Richard McLaughlin
The traditional use of fieldbus is discussed. Examples of novel applications enabled by fieldbus are introduced. Work on temporary fieldbus connectivity that allows more…
Abstract
The traditional use of fieldbus is discussed. Examples of novel applications enabled by fieldbus are introduced. Work on temporary fieldbus connectivity that allows more robust and simple tool change mechanisms is then described.
This paper aims to explain the emergence of the World Heritage Site (WHS) designation as a de facto brand. Branding provides a framework for managing the image of a place…
Abstract
Purpose
This paper aims to explain the emergence of the World Heritage Site (WHS) designation as a de facto brand. Branding provides a framework for managing the image of a place and is an important component of destination marketing. The WHS “brand” is of importance to developing nations because it is available without cost. The study examines the evolution of the WHS program with a focus on emerging markets. It seeks to identify economic, political and other factor which dispose emerging countries to seek WHS designations.
Design/methodology/approach
This study is based on a multivariate analysis of data on 48 emerging countries in which their predisposition to seek WHS designations is predicted by indicators measuring: on‐going involvement with tourism, number of existing WHS sites, level of democratization, and the Human Development Index. The dataset is used to test four hypotheses.
Findings
The analysis identified two significant statistical relationships: first, the number of existing WHS is, as hypothesized, positively related to applications for additional sites and second, the countries standing on the Democracy Index is significantly related to applications, but negatively, not positively, as had been hypothesized.
Originality/value
The study applies multivariate analysis to a field dominated by case study methodologies and suggests the potential complementarities between the two approaches. It documents as well the development of the WHS program as a major factor and contributor to heritage tourism and highlights the growing prominence and value of the WHS brand.
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Hany Abdelghaffar and Lobna Samer
The use of information and communication technologies to provide citizens with the opportunity to give the government their feedback on the rules currently under…
Abstract
Purpose
The use of information and communication technologies to provide citizens with the opportunity to give the government their feedback on the rules currently under development is termed as e-rulemaking. Forums – as the main technological tool used for this – has shown many shortcomings and cannot satisfy all the demands of e-rulemaking. Because social networking sites have shown a political impact on ground, they also might have the ability to remedy these shortcomings. This study aims to investigate the possibility of the use of social networking sites in e-rulemaking.
Design/methodology/approach
This research reviews democratic deliberation theory and e-rulemaking in relation with social networks that are used to develop a proposed conceptual model. A combination of qualitative and quantitative research approaches were used to test the proposed model. Semi-structured interviews for mangers and surveys for citizens were used for data collection and then analyzed to draw empirical conclusions.
Findings
Certain variable were found to have a statistically significant impact on the dependent variable of this study. The variables include information collection, user interface, privacy, security and use of emoticons in communications. Through this, the research provides an understanding of the variables that significantly and insignificantly affect the use of social networking sites in e-rulemaking.
Originality/value
This research contributes with a conceptual model that outlines the influence of different variables on e-rulemaking as well as an understanding of how social networking sites could be used to improve e-rulemaking practices and citizen inclusion.
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Hilary Du Cros and Weng Hang Kong
The purpose of this study is to offer advice to the Macao Special Administrative Region (SAR) Government regarding the tourist and traffic flow concerning how these…
Abstract
Purpose
The purpose of this study is to offer advice to the Macao Special Administrative Region (SAR) Government regarding the tourist and traffic flow concerning how these contribute to congestion in World Heritage Site (WHS) elements and make recommendations regarding the management of tourist flows and traffic congestion.
Design/methodology/approach
The research undertaken in this study is partially longitudinal. The case study is also partially ethnographic in that tourist behaviour at key sites has been observed. Concerning the specific methodology applied, data collection techniques are chosen to provide a multiplicity of data sources: on-site observation and semi-structured telephone interviews.
Findings
The study is found that Macao was at a crossroad. All stakeholders needed to take some responsibility for implementing actions recommended that would ensure that Macao SAR’s World Heritage assets would be used responsibly for future, as well as for present generations.
Originality/value
The study has shown that better and long-term understanding of congestion is necessary to inform better visitor management decision-making, enhance tourist experience and discover the factors that influence visitor satisfaction. It is also needed to reveal aspects of stakeholder readiness and barriers to action.
Details