Skip to content

Fred Stiens

Understanding Western Digital hard drive colors

Western Digital uses a clear color coding system to indicate what each hard drive is designed for. The color is not cosmetic. It reflects firmware tuning, workload profile, reliability targets, and the environment the drive… 

Why I Deployed My Own RustDesk Server

Remote access is one of those things that quietly becomes mission critical once you work remote or manage multiple systems. I use remote desktop tools every single day, so trust, performance, and control matter more… 

English C2 Proficient

I got my English C2 Proficient certificate I recently completed the English test from Education First and achieved C2 Proficient. In simple terms, this means English feels natural to me. I do not need to… 

SIMATIC WinCC Open Architecture Basic Course Certification

I completed the SIMATIC WinCC Open Architecture Basic Course, a professional training delivered by ETM Professional Control in The Hague in the Netherlands. This certification confirms my practical and theoretical knowledge of WinCC Open Architecture,… 

WinForms

A small Windows Forms utility that solves a real daily problem Sometimes software does not need to be complex to be useful. This small Windows Forms application is a good example of how a few… 

Wireshark as a microscope for OPC UA communication

In complex automation systems, problems rarely announce themselves clearly. A value arrives too late. A subscription behaves differently than expected. A client reconnects more often than it should. At that point logs are often not… 

OPC UA vs Modbus

Secure, Structured Communication for Modern Industrial Systems OPC UA is what happens when industrial communication grows up. It was designed to solve the limitations of older field protocols such as Modbus. Instead of just reading… 

Modbus over TCP

Coils, Registers and How the Protocol Actually Works Modbus over TCP is one of the simplest industrial communication protocols still in heavy use today. It runs on Ethernet, uses TCP port 502, and follows a… 

Siemens TIA Portal

What I Learned: TIA Portal Feels Familiar When You Know Other PLC Systems One of the most important realizations while reviewing the Siemens TIA Portal S7 1200 course was how familiar the environment felt in…