WirelessHART represents a groundbreaking evolution in industrial communication, revolutionizing how data is transmitted, received, and managed across various industrial environments. In the rapidly changing world of industrial automation, effective communication networks are critical. They ensure that systems operate efficiently. Also they ensure that data is transmitted accurately and processes are controlled reliably. WirelessHART, a robust wireless communication protocol, addresses these needs with unparalleled efficiency. This blog will delve into the architecture, benefits, challenges, and real-world applications of this transformative technology.
Introduction to WirelessHART
WirelessHART became an extension of the Highway Addressable Remote Transducer (HART) protocol, which was a standard in industrial automation. However, as industries evolved, the need for a wireless version of the HART protocol became apparent. This protocol was developed by the HART Communication Foundation (HCF) and officially released in 2007. It quickly gained traction across various industries due to its reliability, security, and compatibility with existing HART devices.
One of the primary motivations behind the development of WirelessHART was to address the limitations of wired communication systems. Traditional wired systems, while reliable, often come with high installation and maintenance costs. Moreover, in challenging industrial environments the inflexibility of wired systems becomes a significant drawback. In contrast, WirelessHART offers a cost-effective, flexible, and scalable solution that can be easily integrated into existing infrastructures.
Understanding the Core Components of WirelessHART Architecture
WirelessHART, an extension of the HART communication protocol, is specifically designed to meet the stringent requirements of industrial automation. Its architecture consists of several key components that work in harmony to provide reliable, real-time communication in harsh industrial environments. Let’s break down each component and its role in the overall system.
Field Devices in WirelessHART
Field devices form the backbone of the WirelessHART network. These are the sensors and actuators that collect data from the industrial environment or execute commands from the control system. Each field device is equipped with a WirelessHART communication module, allowing it to transmit data wirelessly to the network.
Field devices are not just passive data collectors; they are integral to the network’s communication structure. Each device operates as a node in a mesh network, meaning that it can forward data from other devices, thereby extending the network’s reach and enhancing its reliability. The mesh network topology ensures that even if one path is obstructed or a node fails, the data can still be transmitted via alternative routes. This redundancy is crucial for maintaining the robustness of the network in dynamic and potentially hostile industrial environments.
Gateways in WirelessHART
The gateway is a critical component in the WirelessHART architecture. It acts as a bridge between the wireless field devices and the plant’s control system or asset management system. The gateway is responsible for managing network communication, translating wireless signals from field devices into a format that can be understood by the control system.
One of the key functions of the gateway is to manage the network’s security. It handles the authentication and encryption of messages to ensure that data transmitted over the wireless network is protected from unauthorized access. Moreover, the gateway is responsible for coordinating the timing of communication within the network, ensuring that data is transmitted efficiently and without interference.
In addition to its role in communication, the gateway also plays a vital role in network management. It monitors the health and status of the network, including the connectivity of field devices, battery levels, and signal strength. This information is critical for maintaining the network’s reliability and for troubleshooting any issues that may arise.
Network Manager in WirelessHART
The network manager is the brain of the WirelessHART network. It is responsible for configuring, managing, and optimizing the network to ensure efficient and reliable communication. The network manager performs several key functions, including routing management, network scheduling, and device management.
Routing management involves determining the best paths for data to travel through the network. Since WirelessHART uses a mesh topology, data can take multiple paths to reach its destination. The network manager continuously monitors the network and updates routing tables to optimize communication paths, ensuring that data is transmitted with minimal delay and maximum reliability.
Network scheduling is another critical function of the network manager. WirelessHART operates on a time-synchronized communication protocol, meaning that each device in the network is synchronized to a common time base. The network manager is responsible for scheduling communication slots for each device, preventing collisions and ensuring that data is transmitted efficiently.
Device management involves monitoring the status of all devices in the network, including their battery levels, signal strength, and connectivity. The network manager uses this information to optimize the network’s performance and to ensure that all devices are functioning correctly.
Security Manager
Security is a paramount concern in industrial communication, and WirelessHART addresses this with a dedicated security manager. The security manager is responsible for handling all aspects of network security, including key management, authentication, and encryption.
Key management involves generating, distributing, and updating encryption keys that are used to secure communication within the network. The security manager ensures that all devices in the network use the correct keys and that these keys are updated regularly to prevent unauthorized access.
Authentication is another critical function of the security manager. Before a device can join the network, it must be authenticated to ensure that it is authorized to communicate with other devices. This prevents rogue devices from accessing the network and compromising its integrity.
Encryption is used to protect data transmitted over the network from being intercepted and read by unauthorized parties. The security manager ensures that all data is encrypted using strong encryption algorithms, providing a high level of security for the network.
Plant Automation and Asset Management Systems in WirelessHART
While not technically part of the WirelessHART network itself, plant automation and asset management systems are integral to the overall architecture. These systems receive data from the WirelessHART network via the gateway and use this data to monitor and control industrial processes.
Plant automation systems are responsible for real-time control of industrial processes, using data from WirelessHART field devices to make decisions and execute commands. Asset management systems, on the other hand, are used to monitor the health and performance of assets, providing valuable insights into maintenance needs and helping to prevent equipment failures.
The Mesh Network Topology: The Backbone of WirelessHART Communication
One of the defining features of WirelessHART is its use of a mesh network topology. In a mesh network, each device is connected to multiple other devices, creating a web of communication paths. This topology offers several key advantages in industrial environments.
Firstly, mesh networks provide redundancy. If one path is blocked or a device fails, data can still be transmitted via alternative routes. This ensures that the network remains operational even in the face of challenges such as physical obstructions, interference, or device failures.
Secondly, mesh networks are highly scalable. New devices can be added to the network without the need for significant reconfiguration. Each new device simply becomes another node in the mesh, extending the network’s reach and enhancing its resilience.
Lastly, mesh networks are self-healing. If a device or communication path fails, the network automatically reconfigures itself to find alternative routes for data transmission. This self-healing capability is critical for maintaining the reliability of the network in dynamic and potentially hostile industrial environments.
Time-Synchronized Communication: Ensuring Reliable Data Transmission
WirelessHART operates on a time-synchronized communication protocol, which is crucial for ensuring reliable and efficient data transmission in industrial environments. Time synchronization involves coordinating the clocks of all devices in the network so that they operate on a common time base. This synchronization is achieved using a technique known as Time Division Multiple Access (TDMA).
In a TDMA-based system, time is divided into discrete slots, and each device is assigned specific slots for transmitting and receiving data. This prevents collisions, where two devices attempt to transmit data at the same time, leading to interference and data loss. By carefully scheduling communication slots, WirelessHART ensures that data is transmitted efficiently and without interference.
Time synchronization also plays a critical role in ensuring the network’s robustness. By synchronizing the timing of communication, WirelessHART can avoid interference from other wireless networks operating in the same frequency band. This is particularly important in industrial environments, where multiple wireless networks may be operating simultaneously.
Security Architecture: Protecting Data and Ensuring Network Integrity
Security is a key consideration in the design of WirelessHART architecture. Industrial environments often involve critical infrastructure and sensitive data, making it essential to protect the network from unauthorized access and cyber threats. WirelessHART incorporates several layers of security to ensure the integrity and confidentiality of the network.
One of the primary security mechanisms in WirelessHART is encryption. All data transmitted over the network is encrypted using strong encryption algorithms, ensuring that even if the data is intercepted, it cannot be read by unauthorized parties. Encryption keys are managed by the security manager, which is responsible for generating, distributing, and updating keys to maintain security.
Another critical security feature of WirelessHART is authentication. Before a device can join the network, it must be authenticated to ensure that it is authorized to communicate with other devices. This prevents rogue devices from accessing the network and compromising its integrity.
In addition to encryption and authentication, WirelessHART also employs techniques such as message integrity checks and replay protection to further enhance security. Message integrity checks ensure that data has not been tampered with during transmission, while replay protection prevents attackers from capturing and retransmitting old messages to disrupt the network.
Network Management and Optimization: The Role of the Network Manager
The network manager plays a central role in the WirelessHART architecture, responsible for configuring, managing, and optimizing the network. This includes tasks such as routing management, network scheduling, and device management.
Routing management is critical for ensuring that data is transmitted efficiently and reliably. The network manager continuously monitors the network and updates routing tables to optimize communication paths. This is particularly important in a mesh network, where data can take multiple paths to reach its destination. By optimizing routes, the network manager ensures that data is transmitted with minimal delay and maximum reliability.
Network scheduling is another key responsibility of the network manager. WirelessHART operates on a time-synchronized communication protocol, This means that each device in the network is synchronized to a common time base. The network manager is responsible for scheduling communication slots for each device, preventing collisions and ensuring that data is transmitted efficiently.
Device management involves monitoring the status of all devices in the network, including their battery levels, signal strength, and connectivity. The network manager uses this information to optimize the network’s performance and to ensure that all devices are functioning correctly. If a device experiences issues such as low battery or poor connectivity, the network manager can take corrective action, such as rerouting data or adjusting communication schedules, to maintain the network’s reliability.
Interoperability and Integration: WirelessHART in a Multi-Protocol Environment
WirelessHART is designed to be interoperable with other communication protocols, making it a versatile solution for industrial environments. This interoperability is achieved through the use of gateways and interfaces that allow WirelessHART to communicate with other systems, such as plant automation and asset management systems.
Interoperability is critical in industrial environments, where multiple communication protocols may be used simultaneously. For example, a plant may use WirelessHART for wireless communication, while also using a wired protocol such as HART or Modbus for other parts of the network. By ensuring interoperability, WirelessHART allows these different systems to work together seamlessly, enabling integrated and efficient operations.
Integration is another key consideration in the design of WirelessHART architecture. The protocol is designed to be easily integrated into existing industrial networks, minimizing the need for significant reconfiguration or disruption. This is particularly important in brownfield environments, where new wireless technologies must be integrated with legacy systems.
The Benefits of WirelessHART
The adoption of WirelessHART offers numerous benefits to industrial operations, particularly in terms of cost, flexibility, and reliability. Understanding these benefits is key to appreciating why WirelessHART has become a preferred choice for many industries.
Cost-Effectiveness
One of the most significant advantages of WirelessHART is its cost-effectiveness. Traditional wired communication systems require extensive cabling, which can be expensive to install and maintain. Moreover, in complex industrial environments, the cost of wiring can quickly escalate, particularly when equipment needs to be relocated or when new devices need to be added to the system.
WirelessHART eliminates the need for extensive wiring, significantly reducing installation and maintenance costs. Because the system uses wireless communication, it is also easier and more cost-effective to scale the network as needed. New devices can be added to the network without the need for additional wiring, reducing both the time and cost associated with network expansion.
Flexibility and Scalability
The flexibility of WirelessHART is another key benefit. In industrial environments where equipment is frequently moved or where the layout of the facility changes, the inflexibility of wired systems can be a significant drawback. In contrast, WirelessHART offers a flexible solution that can adapt to changing conditions.
Because it is a wireless system, WirelessHART allows devices to be easily relocated without the need to rewire the entire network. This flexibility is particularly valuable in industries where the layout of the facility is constantly changing, such as in manufacturing plants or construction sites.
Moreover, WirelessHART is highly scalable, making it easy to expand the network as needed. New devices can be added to the network without the need for additional wiring, allowing the system to grow alongside the needs of the operation.
Reliability and Redundancy
Despite being a wireless system, WirelessHART offers a level of reliability that is on par with, if not superior to, traditional wired systems. This reliability is achieved through several key features, including mesh networking, frequency hopping, and redundancy.
In a WirelessHART network, devices form a mesh network, with each device acting as both a transmitter and a receiver. This means that data can be routed through multiple devices on its way to the Gateway, ensuring that communication remains reliable even if some devices or communication paths fail. The redundancy provided by the mesh network ensures that data is always transmitted, even in the event of a failure.
Frequency hopping is another feature that enhances the reliability of WirelessHART. The system automatically switches between different frequencies to avoid interference, ensuring that communication remains clear and uninterrupted.
Security
Security is a critical concern in industrial communication, particularly in wireless systems where data is transmitted over the air. WirelessHART addresses these concerns through robust security features, including encryption, authentication, and continuous monitoring.
All data transmitted within a WirelessHART network is encrypted, ensuring that it cannot be intercepted or tampered with by unauthorized parties. The system also authenticates devices as they join the network, ensuring that only authorized devices can communicate within the network. The Security Manager continuously monitors the network for potential security threats, addressing vulnerabilities before they can be exploited.
These security features provide peace of mind to operators, knowing that their data is protected at all times.
Challenges in Implementing WirelessHART
While WirelessHART offers numerous benefits, it is not without its challenges. Understanding these challenges is essential for successful implementation.
Interference and Signal Obstacles
One of the primary challenges of wireless communication systems is interference. In industrial environments, there are often numerous sources of electromagnetic interference, such as motors, generators, and other wireless devices. This interference can disrupt communication, leading to data loss or transmission errors.
WirelessHART addresses this challenge through frequency hopping and mesh networking. However, it is still essential for operators to carefully plan the deployment of the network to minimize interference. This may involve selecting optimal locations for devices, using shielding to reduce interference, or adjusting the network’s configuration to avoid congested frequencies.
Another challenge is signal obstacles. In some industrial environments, there may be physical obstacles that block or weaken the wireless signal, such as thick walls, metal structures, or large machinery. These obstacles can reduce the range and reliability of the network.
To address this challenge, operators may need to use additional devices to extend the range of the network or to reposition devices to improve signal strength. In some cases, it may also be necessary to adjust the network’s configuration to use alternate communication paths.
Power Consumption
Wireless devices in a WirelessHART network typically rely on batteries for power. While these devices are designed to be energy-efficient, power consumption is still a concern, particularly in large networks where devices may need to operate for extended periods without recharging or replacing batteries.
To address this challenge, operators may need to carefully manage the power consumption of the devices in the network. This may involve optimizing the network’s configuration to reduce the frequency of communication, using energy-efficient devices, or implementing power-saving features such as sleep modes.
In some cases, it may also be necessary to use alternative power sources, such as solar panels or energy harvesting devices, to extend the battery life of the devices.
Real-World Applications of WirelessHART
WirelessHART has been successfully implemented across a wide range of industries, demonstrating its versatility and reliability. Below are some examples of real-world applications of WirelessHART.
Process Automation
In the field of process automation, WirelessHART is used to monitor and control various processes in industries such as oil and gas, chemical manufacturing, and pharmaceuticals. The protocol enables real-time monitoring of critical parameters, such as temperature, pressure, and flow rates. By providing accurate and timely data, WirelessHART helps optimize process efficiency, reduce downtime, and enhance safety.
For example, in an oil refinery, WirelessHART can be used to monitor the temperature and pressure of different processing units. This data is transmitted to a central control system, where operators can make informed decisions to ensure smooth and safe operations.
Factory Automation
Factory automation involves the use of automated systems and machinery to perform manufacturing tasks. WirelessHART plays a crucial role in enabling seamless communication between these systems, ensuring coordinated and efficient operations. The protocol’s low latency and high reliability are particularly valuable in applications where precise timing and synchronization are essential.
In a car manufacturing plant, WirelessHART can facilitate communication between robotic arms, conveyor belts, and quality control systems. This ensures that each step of the manufacturing process is executed accurately and efficiently, resulting in higher product quality and reduced production costs.
Asset Management
Effective asset management is essential for maximizing the lifespan and performance of industrial equipment. WirelessHART enables real-time monitoring of assets, providing valuable insights into their condition and performance. This data can be used to implement predictive maintenance strategies, reducing the risk of unexpected failures and minimizing downtime.
For instance, in a power generation plant, WirelessHART can monitor the health of critical equipment such as turbines and generators. By analyzing data on vibration, temperature, and other parameters, maintenance teams can identify potential issues before they escalate, ensuring continuous and reliable operation.
Environmental Monitoring
Environmental monitoring involves the collection and analysis of data on environmental parameters such as air quality and soil. WirelessHART is well-suited for these applications due to its ability to support large-scale sensor networks and provide reliable data transmission.
In a smart city, WirelessHART can be used to monitor air quality across different neighborhoods. Sensors deployed throughout the city can collect data on pollutants and transmit this information to a central system. City authorities can use this data to implement measures to improve air quality and protect public health.
Safety and Security
Ensuring the safety and security of industrial facilities is of paramount importance. WirelessHART can be used to deploy wireless safety and security systems, such as gas detectors, fire alarms, and access control systems. The protocol’s robust security features and reliable communication ensure that critical safety information is transmitted promptly and accurately.
In a chemical plant, WirelessHART can enable real-time monitoring of gas leaks and fire hazards. In the event of an emergency, the system can trigger alarms and automatically initiate safety protocols to protect workers and prevent damage to the facility.
Remote Monitoring and Control
Remote monitoring and control applications allow operators to monitor and manage industrial processes from remote locations. WirelessHART’s high reliability and low latency make it an ideal choice for these applications, enabling operators to make real-time decisions and adjustments.
In a remote mining operation, WirelessHART can facilitate communication between equipment and control centers located miles away. Operators can monitor the status of mining equipment, track production metrics, and remotely control machinery, ensuring efficient and safe operations.
Future Prospects of WirelessHART: Shaping the Future of Industrial Communication
In the ever-evolving landscape of industrial automation, WirelessHART stands as a beacon of innovation and reliability. Introduced as a wireless extension of the HART (Highway Addressable Remote Transducer) protocol, WirelessHART has already made significant strides in enhancing communication in industrial environments. However, the journey of WirelessHART is far from over. As technology continues to advance, the future prospects of this protocol are incredibly promising, with the potential to redefine the way industries operate. In this detailed article, we will explore the future prospects of WirelessHART, focusing on its potential advancements, applications, and its role in the broader context of industrial communication.
The Evolution of WirelessHART: A Glimpse into the Future
WirelessHART has already established itself as a reliable and secure communication protocol in the industrial sector. Its ability to provide robust and resilient wireless communication in harsh environments has made it a preferred choice for many industries. But what does the future hold for this protocol?
As we move forward, one of the most significant trends we can expect to see is the integration of WirelessHART with emerging technologies such as the Industrial Internet of Things (IIoT) and Artificial Intelligence (AI). The integration of these technologies will not only enhance the capabilities of WirelessHART but also open up new avenues for its application.
Integration with IIoT
The Industrial Internet of Things (IIoT) represents the next frontier in industrial automation. IIoT involves the use of interconnected devices and sensors to collect and analyze data, enabling smarter and more efficient operations. WirelessHART, with its robust architecture and reliable communication capabilities, is well-positioned to play a crucial role in the IIoT ecosystem.
In the future, we can expect to see WirelessHART devices becoming integral components of IIoT networks. These devices will collect data from various industrial processes and transmit it to central systems for analysis. The ability to gather real-time data wirelessly will enable industries to monitor and optimize their operations more effectively. This will be leading to increased efficiency and reduced downtime.
Moreover, the integration of WirelessHART with IIoT will enable predictive maintenance, a key application of IIoT. By continuously monitoring the condition of equipment and assets, WirelessHART devices can help identify potential issues before they lead to failures. This will enhance the reliability of industrial processes and reduce maintenance costs and extend the lifespan of equipment.
Leveraging Artificial Intelligence
Artificial Intelligence (AI) is another technology that is poised to have a profound impact on the future of WirelessHART. AI involves the use of algorithms and machine learning techniques to analyze data, make decisions, and optimize processes. When combined with WirelessHART, AI has the potential to take industrial automation to new heights.
One of the key areas where AI can enhance WirelessHART is in the optimization of network performance. AI algorithms can analyze data from the WirelessHART network to identify patterns and trends. This will be enabling the network manager to make more informed decisions about routing, scheduling, and device management. This will lead to more efficient and reliable communication, even in complex and dynamic industrial environments.
AI can also be used to enhance the security of WirelessHART networks. By analyzing network traffic and identifying anomalies, AI algorithms can detect and respond to potential security threats in real-time. This will provide an additional layer of protection for industrial networks, which are often the targets of cyberattacks.
Smart Cities and Infrastructure
The concept of smart cities involves the use of technology to enhance the efficiency, sustainability, and quality of life in urban environments. WirelessHART, with its ability to provide reliable wireless communication, could play a key role in the development of smart city infrastructure.
In the future, we can expect to see WirelessHART being used in a wide range of smart city applications, from environmental monitoring to traffic management. For example, WirelessHART devices could be used to monitor air quality in real-time. This will enable city authorities to take proactive measures to reduce pollution. Similarly, WirelessHART could be used to monitor and control traffic lights and other infrastructure, helping to reduce congestion and improve the flow of traffic.
The use of WirelessHART in smart cities will not only enhance the efficiency of urban infrastructure but also contribute to sustainability efforts. By providing real-time data, WirelessHART can help cities optimize their operations and reduce their environmental impact.
Renewable Energy
The transition to renewable energy sources is one of the most significant challenges facing the world today. WirelessHART could play a crucial role in this transition by providing reliable communication for renewable energy systems.
In the future, we can expect to see WirelessHART being used to monitor and control renewable energy installations, such as wind farms and solar power plants. The ability to collect and transmit data wirelessly will enable operators to optimize the performance of these systems. This will ensure that they generate as much energy as possible while minimizing downtime.
WirelessHART could also be used to monitor and manage energy storage systems. By providing real-time data on the status of these systems, WirelessHART can help ensure that energy is stored and distributed efficiently, contributing to the overall reliability and sustainability of the energy grid.
Healthcare and Medical Devices
The healthcare sector is another area where WirelessHART could have a significant impact in the future. As medical devices become increasingly connected and data-driven, the need for reliable wireless communication is becoming more critical. WirelessHART, with its proven reliability and security, is well-suited to meet this need.
In the future, we can expect to see WirelessHART being used in a wide range of healthcare applications, from remote monitoring of patients to the control of medical devices. For example, WirelessHART could be used to transmit data from wearable devices, such as heart rate monitors and blood pressure cuffs, to healthcare providers in real-time. This would enable doctors to monitor the health of their patients remotely and intervene if necessary.
Enhancing Security: Meeting the Challenges of the Future
As the use of WirelessHART continues to grow, so too does the need for robust security measures. The future of industrial communication will undoubtedly involve increased connectivity and data exchange, making security a top priority. WirelessHART already incorporates several layers of security, but as the threat landscape evolves, so too must the security measures employed by the protocol.
Advanced Encryption and Authentication
One of the key areas where we can expect to see advancements in the future is in encryption and authentication. As cyber threats become more sophisticated, the need for stronger encryption algorithms and more secure authentication methods will become increasingly important.
In the future, WirelessHART may adopt advanced encryption techniques, such as quantum-resistant encryption, to protect data from being intercepted and deciphered by unauthorized parties. Similarly, the protocol may incorporate more robust authentication methods, such as multi-factor authentication, to ensure that only authorized devices can join the network.
AI-Powered Threat Detection
As mentioned earlier, AI has the potential to significantly enhance the security of WirelessHART networks. In the future, we can expect to see AI-powered threat detection systems being integrated into WirelessHART networks. These systems will continuously monitor network traffic and use machine learning algorithms to identify and respond to potential threats in real-time.
By analyzing patterns in network traffic, AI algorithms can detect anomalies that may indicate a security breach, such as unauthorized access attempts or unusual data transmissions. The system can then take immediate action to mitigate the threat, such as isolating the affected device or blocking the unauthorized access.
Secure Over-the-Air Updates
As WirelessHART devices become more widespread, the need for secure over-the-air (OTA) updates will become increasingly important. OTA updates allow devices to receive software and firmware updates without the need for physical intervention, making it easier to keep devices up to date with the latest security patches and features.
In the future, WirelessHART may incorporate advanced OTA update mechanisms that ensure updates are delivered securely and reliably. This could involve the use of encrypted update packages, secure update channels, and robust verification processes. This will ensure that only authorized updates are applied to devices.
The Role of Standardization and Interoperability
As WirelessHART continues to evolve, the importance of standardization and interoperability will become increasingly apparent. In a world where industrial communication systems are becoming more interconnected, the ability for different systems to work together seamlessly is critical.
Evolving Standards
As new technologies and applications emerge, the need for updated standards will become more important. In the future, we can expect to see new standards being developed that incorporate the latest advancements in technology, such as IIoT and AI, while ensuring compatibility with existing systems.
These new standards will ensure that the protocol remains relevant in an ever-changing technological landscape. Industries can ensure that their WirelessHART networks are compatible with other systems. They can take advantage of the latest innovations in industrial communication.
Interoperability with Other Protocols
Interoperability is another critical aspect of the future of WirelessHART. In industrial environments, multiple communication protocols are often used simultaneously, each serving a specific purpose. Ensuring that these different protocols can work together seamlessly is essential for efficient and integrated operations.
Conclusion
WirelessHART has proven itself to be a reliable, secure, and cost-effective solution for industrial communication. As more and more devices are connected to industrial networks, the need for reliable and secure communication will become even more critical. WirelessHART, with its robust security features and reliable communication, is well-positioned to meet this need.
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Do go through our other blogs to understand IoT concepts: https://blog.smowcode.com/smart-connectivity-wi-fi-in-the-iot-era/
Link to Modbus Blog: https://blog.smowcode.com/understanding-modbus-in-industrial-iot/
