Think about software when buying new machinery
So, you’re eyeing up a new piece of kit for the factory—maybe it’s CNC, maybe something flash with a touchscreen and “smart” features. Good stuff. But if you’re serious about digitalising your operation, don’t get distracted by shiny hardware alone. The software side is where things can quietly go very wrong—and very expensive.
Before you sign on the dotted line, ask these three questions:
1. Do I actually own and get the data for free?
Sounds basic, but you’d be surprised. Some machine vendors treat your own data like a luxury add-on. We’ve heard of buyers getting stung with $100K extra just to unlock machine data they assumed was included. That’s daylight robbery.
Always ask if access to machine data is included in the purchase price—and get it in writing.
2. How Do I Access the Data?
Just because data exists doesn’t mean you’ll be able to use it. There are a few common ways to get machine data out—some easy, some a complete headache:
☁️ Cloud APIs or MQTT
This option is available when you're dealing with modern, network-connected machines or IIoT platforms designed with data sharing in mind. If the machine supports MQTT, OPC UA, or offers a cloud API, you can access real-time data remotely—great for integrations with dashboards or ERP systems. But it typically requires good network infrastructure and vendor support for setup.
📠 USB or HMI Export
Some machines only offer data through a built-in HMI screen or export function, often via USB or SD card. This is common on older or standalone machines that don’t support network connectivity. You’ll know this is available if operators can download logs or reports directly from the interface.
🤖 Proprietary Vendor Software
Many CNCs and high-end machines come with their own vendor-specific software for diagnostics, monitoring, or reporting. If your machine manual references tools like FANUC MT-LINKi, Siemens MindSphere, or Mazak Smooth Monitor, this may be the only supported way to access deeper performance and fault data. Be prepared for licensing costs or vendor constraints.
🔌 PLC or Controller Taps
If the machine is automated and runs on a PLC (e.g., Siemens, Allen-Bradley), data access may be possible by tapping into the PLC over Ethernet or serial connection. You’ll typically find this option in machines with some level of automation, especially if they support industrial protocols like Modbus, Profibus, or Ethernet/IP.
🌐 Tap Into SCADA or MES
If the machine is able to be integrated into a SCADA or MES system, data might be available through those platforms rather than directly from the machine itself. This setup is usually found in larger or more advanced manufacturing environments, where machine data is already centralised and used for monitoring or scheduling. Access may require help from your IT or automation team.
If you don’t know how the data gets from the machine to your system, you’re gambling. Clarify it up front.
3. Can You Show Me, Step-by-Step?
Don’t settle for vague answers. Ask the sales team to actually walk you through they can pull and use the data—for your specific use case. If they can’t show you, that’s a red flag.
Already Bought the Machine? Don’t Panic.
If you didn’t check all this before buying, there are still ways to work around it:
📡 Retrofit IoT Sensors
Stick-on sensors (current, vibration, etc.) can pull useful data from legacy gear.
Pros: Doesn’t touch the machine
Cons: Cost, setup time
💾 Edge Devices
Small computers near machines (like a Raspberry Pi) can bridge the gap.
Pros: Flexible, powerful
Cons: Needs setup and maintenance
🧰 Manual Recording
Operators log data by hand—low tech, but doable.
Pros: Cheap and easy
Cons: Slow, error-prone
Final Word
Machinery is a big investment—but if you ignore how the data works, you might end up with a digital lemon.
Ask the right questions, get clear answers, and don’t be afraid to push for transparency and testing what is being told to you. A few awkward questions now can save you a mountain of pain later.
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