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instrumentation

2 articles tagged “instrumentation”.

Instrumentation cable shielding diagram showing single-end grounding of 4-20 mA analog signal cable in a PLC panel
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Shielding Analog Signal Cables in PLC Panels

Analog noise in PLC panels usually traces back to wrong shield grounding. Here's the exact technique, the common mistakes and the real-world numbers that matter.

Jul 12, 2026 · 8 min read

PLC analog input wiring diagram showing 4-20 mA transmitter connected to Siemens S7 analog input module
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PLC Analog Input Wiring: 4-20 mA Step by Step

Wire a 4-20 mA transmitter to a PLC analog input without ground loops or signal noise. Covers 2-wire, 3-wire, 4-wire devices, shielding and raw count scaling.

Jun 29, 2026 · 6 min read

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