How the IO-Link IODD checksum works
Every IODD (IO Device Description) file carries a checksum near the end: <Stamp crc= "1462814215" > <Checker name= "IODD-Checker V1.1.1" ve…
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What 4-20mA actually means (and why your zero is at 4)
The temperature in your database was, at some point, a current in a wire. Not as a metaphor. Actual milliamps through copper. Almost everything your…
How Factory Data Actually Gets from Machines and PLCs to the Cloud
Industry 4.0 data collection sounds simple until you look closely at the factory floor. In theory, the flow is clean: machine → gateway → cloud → da…
The Safety Workaround That Worked, Until It Didn't
Power it on, and it's supposed to be ready to go on its own, no operator steps. Then one day, after a couple of restarts, it just... wasn't. Here's…
Why Your Schneider PLC's Float32 Reads 1.4e-41 Instead of 25.5 C
You've connected your Python script to a Schneider M221, requested a holding register pair where you know the temperature is 25.5°C , and you get ba…