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Technology Common Industrial Cloud Interface for CIP data transfer The goal of ODVA’s Common Industrial Cloud Interface is to leverage cloud technologies to provide consumers and producers the most value throughout the entire lifecycle of devices that use CIP technologies for data transfer. THE INDUSTRIAL INTERNET OF THINGS (IIoT) is bringing new technologies, challenges and opportunities to industrial automation. Companies are looking to the internet and cloud computing to provide new ways to improve operations, increasing productivity and generate more revenue. Acquiring data from devices is a primary focus of IIoT in the market today, but there are definitely opportunities to do more. What are the challenges presented by these relatively new applications? What technologies are being leveraged to solve these challenges? What capabilities are needed to allow CIP devices to provide an advantage in these applications? Introduction A new Special Interest Group (SIG), the Common Industrial Cloud Interface (CICI), is grouped under the Optimization 4.0 banner among ODVA activities. Its goal is to develop standards that enable new cloud applications to be developed by the member community leveraging the rich data available in devices that conform to ODVA standards. The new SIG intends to leverage “cloud technologies” available today and “connect” them with the rich information defined in CIP Devices in a simple and secure manner. The objective is to focus on making available means to discover CIP devices and the data available in those devices, along with also looking for opportunities to manage devices and collections of devices through gateways. Cloud computing offers many advantages that were previously unavailable, starting with the ability to connect to devices across an enterprise or a machine type across multiple enterprises. In addition, the ability to scale computing power and storage are enabling new possibilities for analyzing data streams. In the sections below, we will highlight some of the basics of cloud computing and explore a set of Information exchange patterns that are common to all applications that include devices, gateways and cloud. As an overview, the three main architectural components in the reference architecture are CIP Device, CICI Gateway and the Cloud. CIP devices In the context of CICI reference architecture, a device is a CIP-enabled device connected to a CIP enabled network. The CIP device’s purpose doesn’t change within the CICI context, nor do its characteristics or behaviors. This statement is very important to consider when contemplating the role of the CICI Gateway and Cloud as well as the guiding principles spelled out later in this article. Only conceptually does the CIP-enabled Device change. In the CICI Reference Architecture, a CIP Device engages in an extended, much wider architectural context that includes the Cloud. In this wider architectural context, a CIP Device’s data (telemetry, etc.) can be published (indirectly) to the Cloud, to be processed, stored and analyzed by services and applications executing there. Likewise, commands and notifications can originate from those same cloud-based applications and be pushed back down through the CICI Reference Architecture to CIP Devices. This is made possible because of the CICI Gateway. No changes to a CIP Device are required for it to interoperate within the CICI Reference Architecture. CIP Devices in CICI reference architecture are decoupled from the Cloud; all integration requirements are handled by the CICI Gateway. This important requirement enables full CICI interoperability for legacy CIP Devices. CICI gateway A CICI Gateway is a middle-tier architectural component that is physically located on-premise and that logically bridges between the CIP network and the Internet and Cloud. Logically, it has two logical interfaces: downstream connects to the CIP-enabled network and n-number of CIP Devices; upstream connects to the Internet and Cloud. As a middle tier CICI Gateway maintains contextual information for n-number of CIP Devices on its downstream interface. On its upstream interface, it maintains context (e.g. security credentials, endpoint URIs, etc.) of multiple Cloud-based services, messaging systems. A CICI Gateway performs a number of roles, most visibly bi-directional secure routing of Device-to-Cloud (D2C) and Cloud-to-Device (C2D) messages between CIP Devices on its downstream interface and Cloud-based services and apps on its upstream interface. 12 industrial ethernet book 11.2017 SOURCE: ODVA The three main architectural components in the Common Industrial Cloud Interface reference architecture are CIP Device, CICI Gateway and the Cloud.


Industrial Ethernet Book 103
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