PLC and Automation Guides, Page 5

S7-1200 First Program in TIA Portal: Step by Step

Build your first Siemens S7-1200 program in TIA Portal from scratch. CPU selection, hardware config, tag table, ladder rung, and online download all covered.

Jul 8, 2026 · 8 min read

TIA Portal Data Blocks: DB Types and When to Use Each

TIA Portal data blocks come in four distinct types. Knowing which to use and how optimized access changes everything will save you hours of debugging.

Jul 8, 2026 · 8 min read

Keyence KV Studio: A Practical Getting-Started Guide

KV Studio is Keyence's free PLC programming environment for the KV-8000, KV-5500 and KV-7500 series. Here's what you actually need to know to get productive fast.

Jul 8, 2026 · 8 min read

TON, TOF and TONR Timers: What Actually Differs

TON, TOF and TONR timers behave very differently under power loss and input cycling. Here's exactly how each one works, with real ladder examples and common gotchas.

Jul 7, 2026 · 7 min read

PLC Counter Instructions: CTU, CTD and CTUD Explained

CTU, CTD and CTUD counters explained with real preset values, accumulated counts, reset behaviour, and vendor-specific differences you need to know.

Jul 7, 2026 · 9 min read

SCADA Alarm Management: Cutting Nuisance Alarms the Right Way

Nuisance alarms erode operator trust and hide real faults. Here is how to audit, rationalise and configure SCADA alarms using ISA-18.2 and EEMUA 191 benchmarks.

Jul 7, 2026 · 9 min read

SCADA Communication Protocols: Modbus, DNP3 and OPC UA

Modbus, DNP3 and OPC UA each solve a different problem in SCADA. This guide breaks down how each works, where it fits, and what trips engineers up in the field.

Jul 6, 2026 · 9 min read

What Is SCADA Software? Features and How to Choose One

SCADA software turns raw field data into actionable plant visibility. Here is what it actually does, which features separate good platforms from frustrating ones, and how to choose.

Jul 6, 2026 · 8 min read

SCADA Network Design: Topologies, Protocols and Security

SCADA network design covers topology choices, protocol selection and cybersecurity hardening. Get the real engineering decisions right the first time.

Jul 6, 2026 · 9 min read

SCADA Control System Basics for Automation Engineers

SCADA control systems sit above the PLC but below the enterprise network. Here's how the layers connect, what software does the work, and where things go wrong.

Jul 5, 2026 · 9 min read

HMI and SCADA: How They Fit Together in a Real Plant

HMI and SCADA are not interchangeable terms. Learn how each layer works, where they connect, and how a real plant ties them together from sensor to supervisor.

Jul 5, 2026 · 9 min read

SCADA System Architecture: Layers, RTUs and the Master Station

Understand SCADA system architecture in depth: the three-layer model, how RTUs and PLCs differ, what the master station really does, and how modern IP networks changed everything.

Jul 5, 2026 · 9 min read

SCADA vs PLC: How They Work Together on the Plant Floor

SCADA and PLCs are not competitors. One controls the process, the other watches it. This guide breaks down the real roles, how they communicate, and where engineers get the split wrong.

Jul 4, 2026 · 8 min read

5 Types of PLC Programming Languages Explained

IEC 61131-3 defines five PLC programming languages. Here is a plain-English breakdown of each, with real examples and honest advice on which to pick.

Jul 4, 2026 · 7 min read

PLC Memory and Addressing Explained

PLC memory addressing controls every tag, bit, byte and word your program touches. Here is how it really works across Siemens, Rockwell and CODESYS platforms.

Jul 4, 2026 · 8 min read

Traffic Light PLC Exercise: Full Ladder Logic

A traffic light PLC exercise is the perfect timer and sequencer workout. Build the full four-phase cycle in ladder logic, then add a pedestrian call button.

Jul 3, 2026 · 6 min read

PLC Elevator Logic Exercise: Step-by-Step

A complete PLC elevator logic exercise covering floor call latching, direction interlocks, door timers and a state-based sequencer. Real runnable ladder included.

Jul 3, 2026 · 7 min read

PLC Bottle Filling Machine: Step-by-Step Project

A hands-on PLC bottle filling machine project covering I/O design, sequence logic, fill-by-time control, and a real ladder rung you can adapt today.

Jul 3, 2026 · 8 min read

PROFINET Communication Loss: How to Diagnose It

PROFINET drops can kill a line in seconds. Here is a systematic diagnosis method: fault log, device status, ping test, topology view and cable checks.

Jul 2, 2026 · 9 min read

Intermittent Sensor Faults: How to Find Them

Intermittent sensor faults in PLC systems are notoriously elusive. Learn how to capture, isolate and permanently fix them using real field techniques.

Jul 2, 2026 · 7 min read

How to Find a Ground Fault in a Control Panel

Ground faults in control panels are silent troublemakers. Here is a systematic, multimeter-based method to find them fast without shutting down the whole machine.

Jul 2, 2026 · 7 min read

Pneumatic Solenoid Valves: Types, Wiring and PLC Control

Understand 2/2, 3/2, 5/2 and 5/3 pneumatic solenoid valve configurations, their wiring to PLC outputs, and the ladder logic that controls them correctly.

Jul 1, 2026 · 8 min read

Safety Relay Wiring: Circuits Explained

Safety relay wiring demystified: terminal functions, dual-channel E-stop circuits, feedback loops, manual vs automatic reset, and how the safety output connects to a PLC.

Jul 1, 2026 · 8 min read

3-Wire Sensor Wiring: PNP vs NPN to PLC Inputs

PNP or NPN sensor, sinking or sourcing input? Learn exactly how to wire 3-wire sensors to any PLC input card with real wiring rules and common mistakes.

Jul 1, 2026 · 9 min read