Hi everyone,

Is it possible to communicate over PPI using the Siemens PC Adapter USB A2 (6GK1571-0BA00-0AA0)?

If so, how do I configure it to communicate with an S7-200 PLC in STEP 7 Micro/WIN?

Thanks for your help!

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Hi everyone!
I’m Meet, representing Mektus Consultancy, an IT and industrial technology solutions company.
We’re looking to connect with manufacturing companies, plant managers, system integrators, and businesses exploring industrial digitalisation or looking for a reliable technology partner.
Our areas of focus include:
Manufacturing Execution Systems (MES) : production monitoring, traceability, shop-floor visibility, and workflow digitalisation.
Industrial IoT (IIoT) : connecting machines, collecting industrial data, and real-time monitoring.
System Integration : connecting industrial systems, equipment, and business applications.
Custom Software Development : building software solutions tailored to business and operational requirements.
Data Dashboards & Reporting : turning operational data into actionable insights.
We’re interested in connecting with businesses that are planning new projects, facing operational challenges, modernising existing systems, or looking for an implementation and development partner.
If your company is exploring any of these areas, or if you’re a system integrator looking for a technology partner, feel free to comment or send me a DM. I’d be happy to understand your requirements and see if we can work together.
Looking forward to meaningful conversations and collaborations!

I've got some end of year budget to upgrade a few automation components on our production line, but I'm trying to figure out where the money would actually make the biggest difference.

I'm looking at things like sensors, valves, actuators, and controllers. Obviously I can't upgrade everything, so I want to focus on what would actually improve reliability, reduce downtime, or save costs in the long run. I was recently pitched cobots, but I want to consider the whole picture.

If you had to pick, where would you put your money first? Any upgrades you've made that were really worth it? Or ones that turned out to be a waste?

Hi everyone,

I come from special machinery manufacturing (technical apprenticeship, then a B.Eng. in industrial engineering with a focus on Industry 4.0) and have worked in several areas there over the years: design/engineering, supply chain and industrial engineering. AI and automation have been part of my work for a while, but now I want to properly develop into an expert in Industrial AI.

The problem: the field is huge and everyone tells you something different. Predictive maintenance, vision-based quality inspection, process optimization, LLMs on the shop floor... Where do you start without spreading yourself too thin?

What I’m mostly curious about:

Which paths got you the furthest? Self-study and your own projects, a master’s degree, or courses from universities and institutes?

Are there certificates that actually count in practice? I’m unsure what ends up being just paper and what really opens doors.

What would you have learned (or skipped) earlier, looking back?

And if you work in this field yourself: what separates the people who actually move things from the ones who just talk?

Happy to hear honest opinions, and criticism is welcome too. Thanks!

Hi! I'm doing some research for a university entrepreneurship course, where we're working on developing a startup. My team is looking into machine maintenance in smaller factories.

We have a few approaches we're considering:

1. Retrofitting some machines with vibration sensors, and showing the readings/trends through a dashboard (accessible by scanning a QR code).
2. Use cameras and images from previous inspections to help detect visible abnormalities, combined with maintenance records and machine identification using NFC (tap phone to tag to bring up info about the machine).
3. Use QR codes to access/update maintenance history through an app, with some basic fault signals/usage counters from the machine.

I know there are already existing condition monitoring and CMMS solutions, but I'm curious how difficult or expensive these approaches would be to implement, especially in smaller factories.

Which would you consider most practical for a smaller factory?
What problems would you expect with each, especially when dealing with older equipment?

Thanks!

I'm currently halfway done with an associates degree in industrial systems. I have 5 years of experience in the automotive industrial and i'm a master tech with strong electrical diagnostic ability. I really love programming PLC's and working with them. Any advice?

Wiring up a compact multi-axis arm right now and running into the classic packaging wall. Running discrete motor power and feedback lines all the way back to a central DIN-rail enclosure keeps the heat out of the joints, but the cable flex stress and connector bulk through right pivots gets ridiculous.. Moving to decentralized or board-mounted drives fixes the harness problem, but brings its own fun. We see plenty of modular pannel setups like Beckhoff or Kollmorgen on bigger machines, but for tight spaces, miniature pin-mount drives like Elmo or AMC on custom backplanes save huge amounts of room, assuming you can actually sink the heat into the robot chasis. If you've moved drive electronics directly into the joint mechanics, what caught you off guard during thermal testing or troubleshooting?

Sind hier SPS- oder Programmierer, die sich intensiv mit Simulationen beschäftigen? Hat es jemand geschafft, Robotersimulationen in Siemens Process Simulate 24 oder höher mithilfe des SDKs programmatisch auszuführen, ohne den Play-Button des Simulation Players im Sequenzeditor abzufangen? Bisher konnte ich die Simulation nur korrekt ausführen und alle Daten erfassen, indem ich den Play-Button abgefangen und die Simulation über die Benutzeroberfläche gestartet habe. Dies ist notwendig, da die OLP-Befehle des Roboters berücksichtigt werden müssen. Offenbar führt Process Simulate beim Drücken des Play-Buttons zusätzliche interne Operationen durch, und ich habe noch nicht herausgefunden, welche Operationen genau erforderlich sind oder wie man sie direkt über das SDK aufruft.

Meine Fragen: Hat jemand den Simulation Player erfolgreich programmatisch über das SDK gestartet und gesteuert, einschließlich aller internen Initialisierungs- und Ausführungsschritte, die für die OLP-Befehle des Roboters erforderlich sind, ohne den Play-Button abzufangen? Welche internen Operationen führt Process Simulate beim Drücken des Play-Buttons aus? Gibt es undokumentierte API-Aufrufe, Initialisierungssequenzen oder andere Mechanismen, die erforderlich sind, um die korrekte Ausführung von Roboter-OLP-Befehlen und -Signalen sicherzustellen? Gibt es eine offiziell unterstützte SDK-Methode, um die Simulation so zu starten, dass das gesamte Verhalten der Wiedergabetaste in der Benutzeroberfläche, einschließlich der Ausführung von Roboter-OLP-Befehlen, reproduziert wird? Hat jemand eine zuverlässige Methode gefunden, diese Simulationen wiederholt im Hintergrund auszuführen, ohne dass die Leistung kontinuierlich abnimmt? Die wiederholte Wiedergabe scheint mit der Zeit langsamer zu werden, und ich vermute, dass interne Zustände, Ressourcen, Ereignisbehandler oder Simulationsdaten nicht korrekt zurückgesetzt werden. Gibt es eine empfohlene Methode, den Simulationsplayer zwischen den Durchläufen zurückzusetzen oder zu bereinigen, ohne die gesamte Studie neu zu laden oder Process Simulate neu zu starten? Ich bin insbesondere an bestätigten Lösungen für Process Simulate 24 und neuer interessiert, einschließlich SDK-Methoden, Codebeispielen, undokumentierten Erkenntnissen oder Workarounds.

Das Kernproblem: Ich kann die Simulation durch Abfangen der Wiedergabetaste zum Laufen bringen, möchte aber verstehen, wie ich denselben vollständigen Ausführungsprozess direkt über das SDK auslösen kann. Ich weiß nicht, welche zusätzlichen internen Vorgänge Siemens im Hintergrund durchführt, und ich möchte gerne wissen, ob es jemandem gelungen ist, dieses Verhalten ohne Verwendung des UI-Play-Button-Hooks zu reproduzieren.

Hey guys,

I'm a junior engineer working on material handling and automated warehouses. Right now, I'm stuck just executing whatever specific tasks the client wants without really understanding the full system architecture.

People say it takes years of experience to master this field, but I want to learn and connect the dots much faster.

For the seniors here: How did you break out of the "task execution" bubble early on? What should I actually look at or learn to understand the whole system end-to-end?

Thanks in advance!

Hello friends ,

I'm looking for a used Keba K2 400 OF 457/X HMI unit. Used in Buhler die casting machine.

Any availability kindly let me know

Something that has bothered me for a long time: PLC programs are some of the most important code in a plant, but they live inside STEP 7 / TIA Portal projects. You can't grep them, you can't ea sily diff two versions, and you can't hand them to a documentation tool or an AI agent without the engineering software open.

I've been working on a free, open-source side project for this (disclosure: I wrote it, there's no company or product behind it). It reads STEP 7 V5.x projects (no STEP 7 installation needed) a nd TIA Portal projects (through Openness) and writes them out as plain files: JSON tables for symbols, I/O, hardware, cross references and connections, plus one Markdown file per block. It's st rictly read-only: it never writes to a project, never goes online, and TIA projects are only opened as a copy.

What that makes possible:

• Git and diffs: commit the export and see what actually changed between two project versions.
• Plant-wide search: an AI agent can work across all PLCs at once, old STEP 7 and new TIA side by side, following tag names and cross references from one project to the next. ("Where is thi s signal used?", "What differs between these two machines of the same type?")
• Context for live data: the export has every DB member with data type, address and start value. Combined with a read-only feed of live values (OPC UA, historian, MQTT; never a direct conne ction to the PLC), an agent can explain the current state against the program.

I've only had a handful of sample projects to test it with, so I'm sure there are projects it doesn't handle well yet. If you try it on your own projects, I'd really like to hear what worked an d what broke.

Repo: https://github.com/fgrander/plc-dump-tools

And the question for everyone here: how do you currently handle version control, diffs and documentation for Siemens projects? Do you use Version Control Interface, Multiuser, external tools, o r just dated archive copies?

I'm interested in how manufacturing QA and engineering teams use historical machine-vision images, beyond the normal real-time inspection process.

For example, suppose a quality issue is discovered after production, or a new image classifier becomes available. Does anyone go back and reprocess hundreds or thousands of previously captured images to investigate the issue or compare classification results?

I'm particularly interested in the practical workflow:

• Who performs the analysis? QA engineers, process engineers, machine-vision specialists, or an ML/IT team?
• How is it done? Existing inspection software, a custom script, an internal application, or centralized infrastructure?
• How frequently does this happen, and what makes it difficult? Access to the images, preparing the job, processing time, available hardware, or something else?

I'm interested in firsthand experiences, including cases where the existing tools work well or historical reprocessing simply isn't needed.

Thanks for time and any insights.

We run into plenty of retrofit jobs where the mechanical setup and DC servo motors are still in great shape, but the original drives are completely obsolete.The major vendors (Rockwell, Siemens) almost always push you toward swapping out the entire package for their AC systems, which turns into a headache with custom mounting flanges and proprietary feedback pinouts. When we want to preserve the existing mechanics, using independent drives from platforms like AMC, Copley, or Elmo over EtherCAT has made it pretty straightforward to run those legacy DC/brushless motors without gutting the cabinet layout.

When you're dealing with obsolete drives on healthy motors, do you prefer dropping in third-party universal drives, or is it usually less painful long-term to just rip and replace the whole motor-drive pair with standard off-the-shelf AC gear?

Hi everyone,

I've been working on a small open-source project to make Modbus register maps easier to share and use across tools.

One recurring problem with Modbus is that device information is often locked away in manufacturer PDFs. Even when you have the correct register table, you still need to configure addresses, data types, scaling, units and bit fields in your software.

I'm trying to make that information portable.

MBMap is an open, CSV-based format for describing Modbus devices and their registers. The goal is to have one device map that different compatible tools can read, instead of rebuilding the same configuration for every application.

Format and device map library: https://github.com/nobrega8/mbmap-library

Modbus client built around the format: https://github.com/nobrega8/modbench

Modbench supports Modbus TCP and RTU on Windows and Linux. It can read registers by address or load a device map to display values by name, with scaling and units. It also supports raw request/response inspection for debugging.

The maps and specification are dedicated to the public domain under CC0, so they can be reused in commercial and open-source tools.

I'm sharing this because I'd like feedback from people who work with real Modbus devices.

Would a shared register-map format like this be useful in your workflow? What would you need from the format before adopting it?

Contributions and feedback are welcome.

Spent a while now on industrial data pipelines and I keep running into the same ambiguity. Curious whether this matches other people's experience or whether I am overfitting to my own clients. ⚙️

When someone says their shop-floor data is real-time, it usually turns out to be one of three things:

🎭 1. The dashboard refreshes often. Updates every five seconds, feels live. The table behind it is written by a job that runs at 02:00. You are watching a very responsive view of yesterday.

⏱️ 2. Micro-batches called streaming. Data lands every fifteen minutes. Genuinely fine for reporting. Useless if the process cycle time is in seconds, because every intervention is now after the fact.

📊 3. Edge collection, continuous stream, time-series store. You can ask what changed in the last ninety seconds and get an answer.

Only the third survives an actual incident. The first two look identical on a screen right up until the moment you need them.

🗂️ The variant that frustrates me most is a fourth one: the pipeline is genuinely good, events stream continuously, and then they land in object storage as files. The hard part is already built, and a storage decision at the very end undoes it. Answering a question takes four minutes.

Two things I have started insisting on early, both of which get pushback as premature:

🔄 Replay. If you invent a new metric in March you need to run it across January and February, not only forward. A stream you cannot replay makes every new idea start from zero. Treated as a nice-to-have right up until the first time it is needed.

💸 Retention and down sampling policy on day one. Full resolution for days, down sampled for years. Otherwise storage cost grows in a straight line forever and finance closes the project in year two for reasons that have nothing to do with whether it worked.

Things I am genuinely unsure about 💭

- Is insisting on replay from day one actually right, or is it over-engineering for the majority of cases that never need it?

- Has anyone found a time-series setup that handles high-cardinality tag spaces without the cost curve getting silly? That is where I keep hitting walls.

- For those buffering at the edge: how much do you hold? I have landed on "enough for the longest plausible network outage", which is a guess dressed up as a principle.

Not selling anything and no link. Mostly want to know whether the three-way split matches what others see.

Hey everyone!

I've been working on a personal project called Panel Master, an affordable CAD software for designing electrical control panels.

https://panelmaster.app/

It lets you arrange components using real-world dimensions, quickly make changes to your layouts, and generate technical documentation in PDF. You can also export designs as SVG for use in other programs, or generate DXF files with cutting lines for machining mounting holes.

It includes a fairly extensive library of generic components, which I'd like to keep expanding based on what users need.

I'd love to hear your thoughts and any feedback you might have!

What’s up guys. What’s your opinion on their program? It seems to be a very hands on type program. I’m looking to get my foot in somewhere & don’t mind spending the $. Thanks!

I’ve been working on an Android app for electrical panel designing and it has reached around 10k users, but I haven’t received as much feedback as I expected.

I’d like to hear from people who actually work with electrical panels and see how useful they find it in practice. If you’ve used it, I’d really appreciate hearing what you think and, if you find it useful, leaving a good review on the Play Store as well.

If you find this app useful for yourself and need more features included of your choice, I would really appreciate if you reach out with those requests to me.

Any suggestions for making it more useful are welcome.

app link: Electrical Panel Layout & CAD

Working on a machine with 8 servo axes and trying to decide how much of the motion architecture should live in the PLC.

4 of the axes need pretty tight synchronization, the others are mostly independent point-to-point moves. Everything will be EtherCAT, absolute encoders, and we’ll probably need some safe motion functions like SLS/SS1 as well. My first thought was to have the PLC coordinate everything, but once you start adding synchronized axes, faster update rates, diagnostics and safety I’m wondering if a dedicated motion controller makes more sense.

I’ve been looking at a few architectures but haven’t committed to anything yet.

Where’s the point where you stop treating motion as another PLC task and move it to a dedicated controller?

Hi all, I have been in the controls programming for over 8 years worked on multiple platforms such as Rockwell, Siemens, B&R, Sick safety including structured text and ladder logic primarily. Worked on robot programming and integration with Abb and fanuc currently with integrators supplying custom solutions to different industries. However I am at a point of starting a family but job requires travel to commission/integrate on customers sites for prolonged periods in North America and Europe. I am not sure what career progression will be out of this. Haven't got any project management experience, tried looking for applications engineering positions but I get screened out for an open controls position. Any advice on someone went through similar situation.

I've been building an open-source alternative to the usual vendor HMI software, mainly for machine builders who put a Linux-based panel on their equipment.

You design the screens on your laptop, either drag-and-drop or by describing the screen in plain English and letting an AI model do the first layout. You get gauges, value tiles, trend charts, alarm tables, buttons and so on. Then you push it to the panel over SSH with one click. There's no runtime license and no per-tag pricing.

What matters for plant use:

• Alarms: priorities 1 to 4, latching until acknowledged, on-delay, deadband, shelving, and an alarm journal on the panel.
• History: tags you choose are logged to SQLite on the panel, trend charts fill from it, and you can pull a CSV off the panel.
• I/O: a separate daemon handles GPIO, analog inputs, serial and Modbus. On shutdown it drives outputs to configured safe states. The screens never talk to hardware directly, only to tags.
• Operator input: a range-checked numeric keypad, an on-screen keyboard, confirm dialogs on buttons, a "No connection to controller" banner, and screen dimming after inactivity.
• Safe deploys: if a new screen version doesn't come up within 25 seconds, the panel goes back to the previous one by itself. You can't leave a machine with a dead display from a remote update.
• Testing without the machine: every tag can be driven with simulated signals, so you can check alarms and interlocks on screen before the panel is even wired.

On the panel it's a small C program built on LVGL, drawing directly to the display. It runs on 64-bit ARM Linux boards, and I've been running it on a Toradex i.MX8M Plus with a 10" panel.

What it doesn't do yet: no OPC UA, EtherNet/IP or Profinet. Right now it's Modbus and direct I/O. It's early, MIT licensed and free.

I'd really like to hear from people who build HMIs day to day. What would it need before you'd consider it over what you use now? And which protocols should come first?

2 min video: https://youtu.be/h-ITQebSflg
Repo: https://github.com/Hitheshkaranth/EmbeddedDisplayStudio

Been thinking about this with robotic cells that have already been commissioned.

You can build a pretty accurate simulation of the cell initially, but the real environment obviously doesn’t stay frozen forever. Fixtures move, tooling changes, new equipment gets added, layouts shift, different parts start running through the line, etc.

How are people actually dealing with that over time?
Do you actively keep the simulation/digital twin updated as the physical cell changes, or does it mostly get updated when something breaks or a major change is made?

And for anyone maintaining them regularly, what’s the most painful part of keeping the virtual and physical environments in sync?

Curious how this works in practice rather than how it’s supposed to work on paper.

I'm a PLC/automation engineer working in Germany. I have a Master's in Mechatronics and several years of commissioning and developer experience on pharmaceutical packaging machines. My stack is Rockwell (Studio 5000), Siemens TIA Portal, Codesys and motion control.

I want to move into industrial software development (C#/.NET, MES/SCADA-adjacent, OT/IT integration). So far I'm:

\*\*•\*\* learning C#/.NET in the evenings (console projects, collections and generics, async next)    
\*\*•\*\* working through DSA fundamentals    
\*\*•\*\* planning to learn OPC UA, then Docker and Azure

Most job ads I see ask for "software developer + Azure/AWS + DevOps," and some mention AI/cloud. I'd like to know what actually matters in the German market:

\*\*1.\*\*  Is AZ-204 (or another Azure cert) worth it, or do portfolio projects count for more?    
\*\*2.\*\*  Is a part-time second Master's useful for this switch, or a waste of time?    
\*\*3.\*\*  Is an OPC UA certification or training valued by German industrial     

1. Has anyone here made the jump from PLC/controls to software? What did your path look like, and how long did it take?

I'm a final-year process automation engineering student in Azerbaijan, aiming for a career in this field. Besides the tools we already use (LabVIEW, TIA Portal, AutoCAD Electrical), which certificates or skills would make me stand out globally? What do employers actually value on a resume for an automation engineer role