A hydrostatic level transmitter outputs 4–20 mA over a 0–10 m range into a Siemens analog card. Convert between current, level and raw count, and read an out-of-range signal.
📋 Scenario
You are scaling the analog input for a tank on a Siemens S7. The transmitter is 4–20 mA = 0–10.0 m; the card returns a raw integer where 4 mA = 0 counts and 20 mA = 27648 counts. Get the live-zero scaling right in both directions, then interpret a reading that falls below the live zero.