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OPC UA security is based on state-of-the-art IT best practices, but you do not have to understand the intricacies to deliver a secure solution. Security is always a priority whenever data is passed across a network. As obvious and vital as all these requirements are for OT data, many widely adopted protocols and custom cloud/IIoT solutions do not include these essential aspects. Critical for good OT data management are a quality indicator and the time stamp of the actual reading-not the time it was uploaded. Each tag or data point has descriptive metadata including valuable text descriptions of the point, units, ranges, locations, etc. OPC reflects the reality of the OT environment. OPC has always been targeted at automation data-a continuous stream of values that we need to share between applications to populate user interfaces and trends and from which we need to extract alarms and anomalies. The most obvious is that OPC UA is crossplatform and provides secure-by-design network communications The importance of IIoT and the continuing growth of the cloud may not have been obvious when the OPC Unified Architecture standard was first published in 2006, but some prescient decisions help make OPC UA a natural choice for the entire cloud environment. With many years of experience in the OT field, the OPC UA standard kept the utility and capabilities of the legacy standard while addressing the limitations. The redesign of the OPC standard was much more than a modernization of the legacy standard.

OPC UA SERVER FREE SOFTWARE

It is the preferred way to share data with factory automation software and is implemented by many vendors. The most recent OPC specification-OPC UA-continues to be very widely supported and provides access to almost any field device. OPC has come a long way from the original Windows-centric, network unfriendly, insecure, legacy standard of the late 1990s. OPC unified architecture:В A complete redesign There is one technology you already know that will take your designs from device to cloud and back, and thatвЂ™s OPC UA. There is no reason for the cloud to be intimidating or complex. What changed the landscape then is a clear solution to our current dilemma-OPC. Historically vendors would sell programmable logic controllers (PLCs) and automation products with proprietary interfaces that worked only with their software. Operational technology (OT) applications have a very long life, and in the fast-moving world of cloud IT some solutions are likely to be orphaned. These cloud vendorвЂ“specific solutions have, in turn, caused a proliferation of вЂњgatewaysвЂќ with multiple vendors promoting different methods as a way to transfer data to the cloud.Д¬ustom implementations from IIoT/edge/cloud software and hardware vendors cause a вЂњvendor lock,вЂќ limiting your choices and flexibility. The machine-readable format of the data, usually defined in XML or JSON and different for each solution, creates a custom protocol that may not be ideally suited forВ automation data. IIoT вЂњstandardsвЂќ such as MQTT, AMQP, REST, and Kafka compete to serve as pipelines to move data across the network. There is a confusing hodgepodge of different approaches. Cloud providers, Amazon Web Services, Microsoft Azure, Google IO, and many others each advocate for their own technique for IIoT data interchange. Conquering the Cloud with OPC UAД®xchanging data between Industrial Internet of Things (IIoT) devices and the cloud presents a bewildering array of options. From Volume 1 of the Automation 2021 Ebook: IIoT & Industry 4.0. This vendor-independent standard can take your designs from the device to the cloud and back, protecting your automation investment.

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