OT And IT Integration Strategy: Breaking Data Silos, Reducing Costs And Increasing Efficiency In Smart Manufacturing

In the current wave of digital transformation, the integration of OT and IT has become a key way for enterprises to achieve intelligent manufacturing, reduce costs, and improve efficiency. As a technical consultant who has been working in the field of industrial automation for fifteen years, I have witnessed too many resource losses caused by system separation. Only by breaking down the barrier between OT and IT can we truly unlock the value of data and transform corporate decision-making from "people who are wise after the fact" to "people who are wise beforehand."

How to formulate an OT and IT integration strategy

The first step in developing a convergence strategy is to take stock of ourselves and understand what types of OT devices and IT systems we have and how they currently interact. Many companies purchase a large amount of industrial software from the beginning, but eventually find that the data cannot be collected at all, or even if it is collected, it cannot correspond to correct information. I propose to form a joint team composed of OT engineers and IT architects to draw the current data flow diagram together, find those pain points that rely on manual report entry, and start to deal with the most painful points.

The second step is to establish a unified data standard. In the OT world, OPC UA and OPC UA have their own set; in the IT world, there are various databases and API interfaces. Without standards, integration can be a disaster. We have to work with the team to define a common data model, such as the format in which equipment status, process parameters, and alarm information are expressed, so that the two worlds with different languages ​​can have a common translator.

The biggest challenge facing convergence strategies

The biggest challenge has never been technical, but the fixed trends generated by human thinking and conflicts in the cultural field. OT engineers focus on stability and reliability. A PLC can run for up to ten years without restarting. They are extremely disgusted with the IT department's practice of frequently upgrading patches and restarting the system. However, IT engineers pursue the flow of data and the security of the network. They don't understand why an old system that has been used for more than ten years cannot even be touched. Such cultural barriers will make project progress extremely difficult.

There are compatibility issues with legacy systems, which is a thorny problem. Many key production equipment are old items from more than ten years ago. They do not support modern communication protocols at all and do not even have network ports. If they are forcibly connected to the network, there will be great technical difficulties and huge production safety risks. How to safely transmit data to these old devices is a practical problem that we have to work hard to solve in every project.

What are the key steps in a convergence strategy?

The first step must be to establish network connectivity, but this is not as simple as just adding a network card to the device. We have to sort out the architecture of industrial networks and office networks layer by layer, just like peeling an onion. Generally, industrial firewalls and gatekeepers are used to open up a one-way or controlled data channel while ensuring the independence and stability of the production network, and "mirror" a copy of the production data to the IT system. The two networks must not be directly connected in a simple and crude way.

The next step is to achieve data cleaning and management. The raw data obtained from OT is extremely dirty, contains a lot of noise, and has inconsistent timestamps. These data need to be structured according to the requirements of the IT system, remove invalid data during shutdown and maintenance, and align the timestamps of different equipment. Only after undergoing such governance can data play a role that is of real practical significance and can produce obvious effects in BI reports or artificial intelligence models. Otherwise, it will be like garbage in and garbage out.

What key technologies are needed for integration strategy?

OPC UA is currently recognized as the "golden key" to connect OT to IT. It is not only a communication protocol, but also a service-oriented architecture. It can model the capabilities and parameters of the equipment into a standard information model. With it, we can make the operating status of a packaging machine be easily read and understood by the upper-layer system like a web page, greatly reducing the threshold and difficulty of data collection.

Another indispensable technology is edge computing, which often transmits all data to the cloud, causing network bandwidth and real-time performance to be overwhelmed. Nowadays, we deploy edge gateways in the workshop, which are like smart sentries, achieving real-time processing, analysis and alarming of data directly next to the equipment. Only aggregate data that requires long-term storage or global analysis will be forwarded to the central IT system, which not only ensures real-time control but also reduces the load on the IT system.

How a converged strategy ensures cybersecurity

Security needs to be built into the design from the beginning, not a patch at the end of the project. We need to build a defense-in-depth system between OT networks and IT networks, not just placing a firewall. This includes in-depth inspections of industrial protocols, security audits of operational behavior, and authentication of all access devices. By dividing the entire production network into different security domains, even if one point is breached, the damage can be controlled within a small area.

Training personnel's security awareness is often overlooked, but it is the last line of defense. Many industrial viruses enter the intranet through a randomly inserted USB flash drive or a phishing email. We must regularly conduct security drills for OT colleagues and IT colleagues to make everyone aware that a single ordinary click in the OT network may cause the entire production line to stop operating. Only technology and management can work together to build a solid defense.

What value can integration strategy bring to enterprises?

The most intuitive value is that production efficiency can be improved. When real-time data from the production site can flow seamlessly into the ERP and MES systems, planners can keep track of the actual progress of each work order at any time, and the inventory turnover rate has increased significantly. We once saw in an auto parts factory that with the integration of OT and IT, the mold change time was shortened by 30%. This is real profit, and it was impossible to achieve it by relying on manual statistics in the past.

The deep value lies in the innovation of business models. After equipment manufacturers collect equipment operation data, they can switch from selling equipment to selling services, consumables, and predictive maintenance. They no longer just send engineers to repair after the problem is over, but inform customers in advance which bearings are about to fail, and proactively go to door-to-door maintenance. This closed loop from OT data to IT applications opens up a new source of revenue for enterprises. This is the real star of the integration strategy.

After talking so much about the integration of OT and IT today, I don’t know whether the great resistance your team encountered when promoting this strategy came from technical bottlenecks, or from department walls and people’s mindset? Welcome to share your practical experience in the comment area, let us communicate and discuss together. If you think this article is beneficial to you, please like it and share it with more friends in need.