Factory Field Notes

AOIs and UDTs are the fastest way to make a PLC program maintainable and the fastest way to make it impossible to troubleshoot. This episode works through where that line sits, plus four more questions from r/PLC.

Subscribe for weekly industrial automation discussions built from the most upvoted questions in the community.

Learn more at Joltek:
- OT Networking Fundamentals, the full course: https://www.joltek.com/education/ot-networking-fundamentals
- Rockwell PLC Lifecycle and Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
- Safety in Industrial Automation: https://www.joltek.com...

Is CODESYS any good? I learned it, read about half of the CODESYS book, and give my honest take: a reliable runtime that wins on hardware choice and loses on ecosystem integration and on how it gets sold. Also: commissioning bags, locked OEM code and careers.

Subscribe for weekly industrial automation discussions built from the most upvoted questions in the community.

Learn more at Joltek:
- Bringing New Machinery Into the Plant: https://www.joltek.com/blog/manufacturing-challenges-new-machinery-plant
- Systems Integrator Playbook: A Plant's Guide: https://www.joltek.com/blog/system-integrators
...

Studio 5000 trends only help if they capture the fault, and the intermittent ones never happen while you are watching. This is the trend setup I use: fixed axes, honest sample rates, a trigger, and BOOLs packed into a DINT.

Subscribe for weekly industrial automation discussions built from the most upvoted questions in the community.

Learn more at Joltek:
- PLC Scan Cycles, Polling and SCADA Data: https://www.joltek.com/blog/plc-scan-cycles-polling-scada-systems-data
- Rockwell PLC Lifecycle and Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
- Root Causes of Downtime in Industrial...

PLC training kit design decides whether students learn what the plant floor actually looks like. A Mitsubishi trainer and a student capstone panel show where good intentions fall short: banana plugs, a single channel E-stop, and a missing ground.

Subscribe for weekly industrial automation discussions built from the most upvoted questions in the community.

Learn more at Joltek:
- Safety in Industrial Automation and Manufacturing: https://www.joltek.com/blog/safety-industrial-automation-manufacturing
- Guide to Installing a Windows VM on Proxmox: https://www.joltek.com/blog/guide-installing-windows-vm-on-proxmox
- Humble Beginnings: Consulting and Upskilling...

HMI SCADA platform to learn in 2026 is the wrong first question, and this Reddit round up explains why the backend matters more than the graphics library. Ignition is still the free starting point, but the real skill gap is somewhere else entirely.

Subscribe for weekly industrial automation and manufacturing discussions.

Learn more at Joltek:
- Connecting an Allen Bradley PLC to Ignition: https://www.joltek.com/blog/connecting-allen-bradley-plc-ignition
- Understanding Industrial Ethernet Reliability: https://www.joltek.com/blog/industrial-ethernet-reliability
- Humble Beginnings: Consulting and Upskilling in Systems Integration: https://www.joltek.com...

NAT in industrial networks solves a real addressing problem and quietly creates three new ones. This is the buy or readdress decision, fully costed, from a live plant deployment.

Most plants meet network address translation the same way. A new machine arrives, the builder has assigned an addressing scheme that has nothing to do with the plant, and somebody decides whether to renumber every device in that panel or put a NAT device in front of it.

Subscribe for weekly breakdowns of the technical decisions that land on an engineering manager's desk.

Learn...

Structured text vs ladder logic is the oldest argument in PLC programming, and this week a CODESYS convert changed sides and said so publicly. I agree with where he landed and not with how he got there.

Subscribe for weekly industrial automation and manufacturing discussions.

Learn more at Joltek:
- IP Addresses in Industrial Automation and OT Networks: https://www.joltek.com/blog/ip-addresses-industrial-automation-ot-networks
- Root Causes of Downtime in Industrial Automation: https://www.joltek.com/blog/root-causes-downtime-industrial-automation
- Rockwell PLC Lifecycle and Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
...

Three weeks into a new PLC programming job with zero PLC experience, no training and nobody nearby to ask. That question drives this episode, along with four more from the plant floor.

Subscribe for weekly industrial automation and manufacturing discussions.

Learn more at Joltek:
- Unmanaged Switches and Cybersecurity: https://www.joltek.com/blog/industrial-unmanaged-switches-cybersecurity
- PLC Lifecycle and Migration: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
- Industrial Ethernet Reliability: https://www.joltek.com/blog/industrial-ethernet-reliability

The career question is the one worth sitting with. A computer science graduate takes...

AI in industrial automation is producing real productivity gains and real risk at the same time. This is an honest account of where it helps and where it will confidently hand your team a wrong answer.

Subscribe for industrial automation and manufacturing perspective from active project work.

Learn more at Joltek:
- Edge Computing, AI and Manufacturing Data: https://www.joltek.com/blog/edge-computing-ai-value-manufacturing-data
- Root Causes of Downtime in Industrial Automation: https://www.joltek.com/blog/root-causes-downtime-industrial-automation
- Workforce Development and Education: https://www.joltek.com/services/service-details-workforce-development-education
- Operations...

Choosing a PLC brand for a new plant has two very different answers depending on whether you own the factory or you are advising someone who does. This episode gives both, plus four more questions from the plant floor.

Subscribe for weekly industrial automation and manufacturing discussions.

Learn more at Joltek:
- Connecting an Allen-Bradley PLC to Ignition: https://www.joltek.com/blog/connecting-allen-bradley-plc-ignition
- Rockwell PLC Lifecycle and Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
- Edge Devices, PLCs, IPCs and Plant Architectures: https://www.joltek.com/blog/manufacturing-concepts-edge-devices-plcs-ipcs-industrial-automation-software-hardware-architectures
...

Ladder logic is not a legacy habit. It is the right visual representation for the Boolean, state based logic that actually runs machines, and this week explains why that matters at 3 AM with a line down.

Subscribe for weekly plant floor questions answered in full.

Learn more at Joltek:
PLC Scan Cycles, Polling and SCADA Data: https://www.joltek.com/blog/plc-scan-cycles-polling-scada-systems-data
Rockwell PLC Lifecycle Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide

The anchor question came from a computer science background: why do PLC programmers use ladder? The usual answer...

PLC panel photos tell you almost everything about the person who built or dismantled them. This week reviews five real ones from the community, plus the honest answer to what a beginner should actually learn first.

Subscribe for weekly plant floor questions answered in full.

Learn more at Joltek:
Control System Modernization Strategy: https://www.joltek.com/blog/control-system-modernization-strategy
Rockwell PLC Lifecycle Migration Guide: https://www.joltek.com/blog/rockwell-plc-lifecycle-migration-guide
Connecting an Allen-Bradley PLC to Ignition: https://www.joltek.com/blog/connecting-allen-bradley-plc-ignition

The best panel this week is a large...

A messy control panel tells you almost everything about how a machine has been maintained. This episode reads five real plant photos and calls out what actually matters.

The first submission is a panel worked on for years under time pressure, and every symptom of that is visible. I cover what I would flag first, why panels end up this way, and how to decide whether it gets retrofitted or runs until the machine retires.

Subscribe for weekly plant floor questions answered in full.

Learn more at Joltek:
Control System Modernization Strategy...

Wireless PLC Access during commissioning lets you program and troubleshoot a controller from a laptop without running an Ethernet cable across the plant floor. This video shows the field method and the disciplined alternative.

Most PLCs do not connect wirelessly out of the box, so field teams reach for an inexpensive travel router to close the gap. Subscribe for more field grounded guidance on OT networking, commissioning, and industrial modernization from Joltek.

Learn more at Joltek:
- OT Networking Fundamentals: https://www.joltek.com/education/ot-networking-fundamentals
- IT and OT Architecture Integration: https...

In-House vs Contractor is the call every engineering manager eventually faces on aging control systems, and this field Q&A works through when to keep the work internal and when to bring in outside help.

Vladimir Romanov answers six real questions from the field, from a Siemens ET 200SP retrofit to buggy PLC software, HMI design, and hiring for automation roles.

If you lead an automation or engineering team, subscribe to Factory Field Notes for weekly lessons that connect the technical call to the business case.

<...

Industrial automation Q&A on the skills shift every controls team is feeling, plus a cautionary Rockwell quality story, a TIA Portal version trap, and honest career advice. This episode answers five of the most upvoted questions from the r/PLC community.

Vladimir Romanov, founder of Joltek, answers each one as someone who has hired, mentored, and built automation teams. If you manage engineers or you are growing your own career, subscribe for breakdowns that connect the technical work to the business decisions behind it.

The lead question is the one most managers are quietly...

Industrial automation careers reward the people who treat skill building like a capital investment, not a hobby. This Q&A breaks down how to grow in controls, SCADA, and MES, how to break into the field without an engineering degree, and how to think about which skills actually pay.

Vladimir Romanov, founder of Joltek, answers real questions from the community as someone who has hired, mentored, and built automation teams. If you manage engineers or you are trying to grow into a more valuable role yourself, subscribe for breakdowns that connect the technical work...

This obsolete ControlLogix has been running a whole production line for over a decade, the power supply just failed, and nobody will approve the modernization. In this Q&A I work through five real questions from the community, and the one that hits hardest is the nightmare cabinet: a dusty, ten foot high enclosure built around a controller that ended support years ago.

If you program, wire, commission, or maintain industrial systems, this episode is built for you. I go past the surface and into why this specific failure mode is so expensive. The controller in that...

Allen-Bradley vs Siemens is rarely a pure technology decision, and this field Q&A breaks down why region, hiring, support networks, and vendor lock-in usually decide your PLC standard long before specs do. If you own a platform decision, this gives you the real reasoning to defend it upward.

Most managers inherit a control system standard rather than choose one from a clean sheet. A plant accumulates machines from different builders, each arriving with its own controller, and over time the cost and difficulty of supporting many vendors pushes the organization toward harmonizing on...

This PLC and Automation Q&A answers six field questions on engineer burnout, IT/OT skill pressure, Studio 5000 bitwise AND, and the 2026 entry level job market.

Every question maps to a decision an engineering manager is already navigating: retention, training, IT and OT scope, and how to hire and evaluate junior talent.

Subscribe for analysis of engineering team dynamics, capital planning, and the operational realities of running an industrial automation function.

Learn more at Joltek:

- IT and OT Architecture Integration: https...

The Rockwell State of Smart Manufacturing Report 2026 is the most cited smart manufacturing study of the year. This executive review pulls apart which findings hold up on the plant floor.

Rockwell Automation surveyed 1,560 decision makers across 17 countries for the eleventh annual edition, with 62 percent holding spend authority.

Subscribe for executive analysis of industry research, capital allocation, and the operational reality behind digital transformation.

Learn more at Joltek:

- Digital Transformation in Manufacturing: https://www.joltek.com/blog/digital-transformation-in-manufacturing

- Industry 4.0...

Industrial automation Q&A: a consultant answers six of the most consequential career and modernization questions facing engineers and managers in manufacturing today. Real questions, no vendor pitch, no oversimplified answers.

From legacy PLC migration to the polymath trap, this episode walks through the operating decisions quietly shaping plant floors across the country right now.

Subscribe for weekly conversations on industrial automation, manufacturing modernization, and the operational decisions that separate plants that scale from plants that stall.

Learn more at Joltek:
- Rockwell PLC Lifecycle and Migration Guide: https://www.joltek.com...

PLC programming Q&A walks through five r/PLC community questions on free simulators, browser IDEs, physical trainers, automation careers, and project complexity.

This first episode pulls the most discussed questions from r/PLC, PLCtalk, control.com, and automation subreddits, then answers each with the perspective a working controls engineer would give. Subscribe to follow the rest of the series.

Learn more at Joltek:

- PLC Scan Cycles, Polling, and SCADA Data: https://www.joltek.com/blog/plc-scan-cycles-polling-scada-systems-data

- Connecting an Allen Bradley PLC to...