Internet of Things
The importance of an industrial OPC black box
The industrial sector always has, and always will, thrive on data. Whether it is the simple signals shared between rudimentary control systems or performance indicators recorded by engineers to monitor system health, data plays an integral role in the continuity and improvement of industrial processes. With greater machine-to-machine connectivity, the speed, stability and security of network communication of data becomes vital. Here, David Evanson, corporate vendor relationship manager at Novotek UK and Ireland, explains why a black box OPC gateway offers a simple solution to modern network requirements.
F
or the past few years, the number of connected devices has outstripped the population of Earth several times over.
In 2018, Statista reported that there was an estimated total of 22 billion Internet of Things (IoT) devices connected globally, almost three times the 7.5 billion people alive that same year. Within the industrial space, the latest figures
from Juniper Research put the total of Industrial IoT (IIoT) devices at 17.7 billion in 2020. This reinforces what Novotek has seen in the UK market, of more manufacturing and industrial businesses recognising the value of accessing and analysing data from the plant floor, where many of these IIoT systems are situated. However, the IIoT is increasingly stretching
out beyond the factory floor. In today’s digital world, control engineers, production managers, business leaders, interrelated and interdependent departments each need access to real-time data from industrial control equipment. The benefit from increased data access is well-documented. However, the challenge comes from connecting disparate, edge-based and legacy systems in a secure, reliable way. Many industrial settings feature various
installs of industrial communications software running on standard PCs, alongside other software applications that are all competing for processor resources. These PCs often have limited or no access from the wider world, where critical operations management applications would benefit
from real-time industrial data. When we consider that any analytics reporting stands and falls based on the quality and reliability of the data acquisition beneath, it is important that businesses can unify their systems. Understandably, it is no easy task for
engineers to effectively and securely connect IT and OT systems, as well as ensuring communication between edge devices, legacy equipment and data sources using different computing languages. This is where a dedicated, standalone open platform communications (OPC) gateway device comes in. These devices sit securely between IT and OT networks and manage data traffic across a multitude of devices, making the otherwise daunting task simple, controllable and inherently secure.
Crucially, the OPC gateway device benefits
most from being a black box device. There is a widely known phrase in IT technical support that, for many issues, the problem exists between the monitor and chair. This holds true for industrial environments too - the best performing industrial PC for many applications is one with no monitor, keyboard or mouse. Defining the best hardware and OPC
platform for a black box OPC gateway is vital, as the ideal approach should be to set up the device and leave it to perform its job. As such, the physical box should be rugged enough to operate effectively in the harshest of industrial environments. Similarly, the software must be compatible with various applications, powerful enough to bring multiple protocols and drivers into a single
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May 2021 Instrumentation Monthly
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