PROFIsafe is a functional safety communication protocol that runs on top of PROFIBUS or PROFINET. It allows safety-critical data — emergency stop signals, light curtain outputs, safety door interlocks — to travel on the same cable as standard control data, without requiring a separate safety bus. In the IEC standards framework, PROFIsafe is defined as FSCP 3/1 (Functional… Read More »
PROFIBUS faults fall into two categories: installation faults (wiring, termination, grounding — things that were never right) and operational faults (things that worked and then stopped). The approach to each is different. For installation faults — commissioning a new network or adding devices — start at the physical layer and work up. You cannot fix a protocol issue… Read More »
PROFIBUS is a digital communication system that connects a factory’s brain (the controller) to its hands and senses (sensors, valves, motors, and instruments) using a single shared cable instead of hundreds of individual wires. The Problem PROFIBUS Was Designed to Solve Imagine a large factory. A PLC (Programmable Logic Controller) sits in a control room. Out on the… Read More »
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 »