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PLC & controls guides
Focused on why the logic is used on real equipment, not just memorizing instructions.
PLC BASICS
PLC SET/RESET Logic: Why Stop Priority Matters
How scan order, latching and reset conditions affect a machine Run state.
ANALOGHow to Scale a 4–20mA Load Cell Signal in a PLC
Scale 0–4000 raw counts to 0.0–500.0 kg and understand quantization/noise.
PLC BASICSWhy PLC One-Shot Logic Needs a PLS Pulse
Why ADD can repeat every scan and how a one-scan pulse fixes it.
SEQUENCEHow to Build a Step Sequence with Internal M Bits
Use state bits and one-shot transitions to build a clean one-cycle sequence.
DATAPLC D Registers and MOV: Why Scan Order Changes Results
See how MOV placement changes what a comparison sees in the same PLC scan.