Specifications Specification Details Product Name / Model Schneider Electric TM171PDM27R — Modicon M171 Performance PLC Controller Type Compact programmable logic controller (PLC) Application HVAC, pumping & general automation Total I/O Points 27 points integrated Digital Inputs 8 digital inputs (sink/source logic @ 24 V AC/DC; 1 high‑speed counted) Digital Outputs 7 relay outputs: 2 × SPDT (8 A) and 5 × SPST (5 A) Analog Inputs 6 analog inputs: 2 NTC, 4 configurable (voltage/current/RTD/thermistor/resistance) Analog Outputs 5 analog outputs: 3 voltage/current (0–10 V / 4–20 mA) and 2 open‑collector (1 kHz / 12 V) High‑Speed Counter 1 channel (up to ~1 kHz) Supply Voltage 24 V AC/DC or 20–48 V DC (48 V nominal) Processing Speed ~0.3 ms per 1 K binary instruction (deterministic) Communications 1 × RS‑485 Modbus serial; 1 × CAN expansion bus; 1 × USB mini‑B (programming); 1 × USB Type‑A (host) Display Integrated LCD and front keypad Programming Software EcoStruxure Machine Expert – HVAC / Basic (or equivalent) Protection Rating IP20 Operating Temperature –10 °C to +55 °C (typical) Mounting DIN‑rail (35 mm) Certifications CE, cURus/CSA, EAC; meets EN/IEC 60730 standards Dimensions (approx.) 140 mm (W) × 110 mm (H) × 61.6 mm (D) Weight (approx.) ~0.32 kg