“The generator is clean enough” – Why your Siemens S7-1200 might fault before the Allen-Bradley PLC even blinks
Allen-Bradley vs Siemens PLC — The myth: “All PLCs with a 24 V DC supply can ride the same voltage sag and surge coming off a diesel generator.” The Siemens S7‑1200 datasheet proudly shows 20.4–28.8 V DC input range – and the Allen‑Bradley… [...]
Continue Reading →Allen-Bradley vs Mitsubishi PLC: The 26°C Shelter Decision That Rewrites Your Heat Budget
Allen-Bradley vs Mitsubishi PLC — The scenario: A remote telecom shelter in the Mojave, with a failing 48 V fan tray and a 40 W heat budget for the controller. [...]
Continue Reading →Allen-Bradley PLC vs Omron PLC: the spec that actually fails first
Allen-Bradley vs Omron PLC — Popular industrial lore says a PLC fails either by blown power supply, a fried I/O card, or bit logic speed. [...]
Continue Reading →Allen-Bradley vs Schneider PLC: Total Cost Over Five Years
Allen-Bradley vs Schneider PLC — If you buy a $600 PLC but spend $4,200 in engineering rework before Year 2, that acquisition price was a trap. [...]
Continue Reading →Allen-Bradley vs Omron PLC: total cost over five years — the spec that keeps costing
Allen-Bradley vs Omron PLC — Every PLC buyer I meet asks the same question: which controller is cheaper to own over five years? [...]
Continue Reading →“A 40 W PLC in a 35 W panel is not a thermal problem, until it is — how many watts do you really need?”
Allen-Bradley vs Siemens PLC — You are reviewing a control cabinet cooling budget, and the PLC datasheet says “power dissipation max 8.5 W” [CompactLogix 5380]. [...]
Continue Reading →“My PLC cycles fast—so what makes a real machine stop?”
Allen-Bradley vs Mitsubishi PLC — You bought a controller that screams on paper: 34 ns basic instruction, 64 k steps of program space . Your team runs a pick-and-place cell, 12 axes, mixed I/O, one short conveyor—mid-range by any measure. [...]
Continue Reading →Allen-Bradley vs Mitsubishi PLC: The $700 Trap That Kills Your Maintenance-Light Panel
Allen-Bradley vs Mitsubishi PLC — The myth: “A maintenance-light panel means you can pick the cheapest PLC because nobody’s going to mess with it.” That thinking leads straight to a $700+ hidden cost — not the hardware, but the labor of… [...]
Continue Reading →Allen‑Bradley PLC vs Schneider PLC: What the Datasheet Hides
Allen-Bradley vs Schneider PLC — You’re wiring a Modicon M241 into a retrofit line. The datasheet says five comms ports, 8 MB program memory, ~50 µs response. Looks strong. [...]
Continue Reading →Allen-Bradley vs Omron PLC: What the Datasheet Hides
Allen-Bradley vs Omron PLC — You’re designing a system that needs to handle 12 axes of motion, a mix of safety zones, and a plant-floor Ethernet ring. [...]
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