PROFIBUS uses two physically distinct cable systems depending on which protocol variant is deployed: Both carry digital signals over shielded two-core cable. The color coding is the fastest way to tell them apart in the field. Everything else — conductor size, impedance, maximum segment length, connector type — differs between the two. This article covers both in full.… Read More »
PROFIBUS PA (Process Automation) is a fieldbus communication protocol designed specifically for process industries — oil and gas, chemicals, pharmaceuticals, water treatment, and food and beverage. It connects field instruments like pressure transmitters, flow meters, temperature sensors, and control valves to a control system over a single two-wire cable that carries both data and power simultaneously. In the… Read More »
SCADA stands for Supervisory Control And Data Acquisition. It is a system that lets you watch and control industrial processes from one central place. It collects data from equipment in the field, shows it to operators on screens, raises alarms when something goes wrong, and sends control commands back to equipment. SCADA is common in: It is used… Read More »
Achieving ISO 27001 certification is not a documentation project. It is a rigorous organizational transformation — one that requires building, operating, and demonstrating the effectiveness of a fully functioning Information Security Management System (ISMS) before an accredited external auditor. For IT and security professionals leading or supporting a certification effort, understanding the precise technical and procedural requirements of… Read More »
Picture this: an IT security manager receives an alert about unusual network activity on a control system. She escalates it to the network team, who isolates the affected node — a standard IT incident response move. What she doesn’t know is that the node she just cut off was a PLC managing pressure regulation in a chemical process.… Read More »
When a corporate IT server goes down, the worst-case scenario is usually lost productivity and frustrated employees. When an Industrial Control System (ICS) fails — or is compromised — the consequences can be entirely different: a pipeline rupture, a power grid blackout, a water treatment plant releasing unsafe chemicals, or a factory floor accident that injures workers. Yet… Read More »
Industrial Control Systems (ICS) are the backbone of critical infrastructure — from power grids and water treatment plants to manufacturing lines and oil pipelines. As these systems become increasingly connected to corporate networks and the internet, they face growing cybersecurity threats that were once unthinkable in isolated operational environments. This training guide is designed to help all staff… Read More »
The Distributed Network Protocol (DNP3) is engineered to support a broad spectrum of devices in SCADA and automation systems — from simple field instruments and relays to sophisticated substation controllers and data concentrators. To deliver this flexibility without sacrificing interoperability, IEEE Std 1815-2012 defines four implementation levels (L1 through L4). Each level specifies a precise subset of required… Read More »
The Distributed Network Protocol (DNP3) is a widely used SCADA communication protocol designed to enable reliable data exchange between master stations and outstations. It is optimized for transmitting small, structured data packets efficiently and reliably in industrial environments A key strength of DNP3 lies in its object-based data model, which organizes data into object groups, variations, and indices.… Read More »
The Distributed Network Protocol (DNP3) is a widely adopted communication protocol in SCADA (Supervisory Control and Data Acquisition) systems, particularly within electric power and utility industries. Standardized as IEEE 1815, DNP3 was specifically designed to address the challenges of reliable, efficient, and scalable communication over constrained and noisy networks. Its feature set reflects the practical needs of industrial… Read More »