About TerminalRow

TerminalRow publishes practical, vendor-neutral guides for the people who actually work with industrial control systems — not for boardrooms or certification bodies.

Who this site is for

TerminalRow is written for:

• Maintenance electricians and technicians who need to troubleshoot a fault or wire a sensor without wading through a vendor manual.
• Junior and mid-level controls engineers learning new platforms or expanding beyond their primary vendor.
• Plant engineers at small and mid-size manufacturers who make purchasing and design decisions without a large engineering department.
• System integrators' new hires who need to get productive quickly across multiple platforms.
• Technical students moving into industrial automation.

What we cover

Seven topic areas, each with a pillar guide and a set of focused articles:

• PLC Programming — ladder logic, structured text, IEC 61131-3, timers, counters, PID and cross-platform comparisons
• HMI & SCADA — screen design, alarms, historians and small-plant SCADA options
• Sensors & Instrumentation — proximity sensors, 4–20 mA, RTD vs thermocouple, IO-Link, level and flow
• Motors & Drives — VFD selection and parameters, servo vs stepper, soft starters and drive faults
• Industrial Networking — EtherNet/IP, PROFINET, Modbus, OPC UA, MQTT/Sparkplug and managed switches
• Machine Safety — safety relays, safety PLCs, light curtains, ISO 13849 and e-stop circuits
• Control Panels — panel layout, wire sizing, UL 508A basics, heat load and NEMA/IP ratings

What we do not cover

Robot arms, cobots and robot programming; CNC machining; compressors, pumps and general maintenance programs; MES/ERP/CMMS software selection; and industry news. These topics are covered by sister sites linked in our editorial policy.

Our differentiator

Most ranking content on industrial controls topics is either vendor documentation (accurate but brand-locked and hard to read), paid-course funnels, or forum threads (useful but scattered and unverified). TerminalRow provides clear, worked answers with cross-vendor comparisons, original wiring diagrams and troubleshooting tables — without selling anything.

Who writes the content

Articles are published under the TerminalRow Editorial Team byline. Content is researched from manufacturer datasheets, IEC and ISO standards, NFPA/NEC requirements, and practitioner forums. We use AI-assisted research and writing tools. Our editorial policy describes the full process, including fact-checking and update procedures.

Safety notice

Questions or corrections? See our corrections page or contact us.