SIMATIC S7-1200, analog I/O SM 1234, 4 AI/2 AO

Specifications: Electrical Characteristics: Supply Voltage: 24 V DC. Backplane Bus Current: 80 mA (typical). Power Loss: 2 W. Current Consumption: 60 mA (typical). Analog Inputs (4 Channels): Signal Types: Voltage (±10 V, ±5 V, ±2.5 V), Current (0–20 mA, 4–20 mA). Resolution: 12-bit + sign (13-bit ADC). Input Resistance: Voltage: ≥9 MΩ. Current: 280 Ω. Cycle Time: Max 625 µs. Smoothing: Configurable (None, Low, Medium, High). Accuracy: ±0.1% @ 25 °C. ±0.2% up to 55 °C. Diagnostics: Wire-break, supply voltage monitoring, LED indicators. Analog Outputs (2 Channels): Signal Types: Voltage (±10 V), Current (0–20 mA, 4–20 mA). Resolution: Voltage: 14-bit. Current: 13-bit. Load Impedance: Voltage: ≥1 kΩ. Current: ≤600 Ω. Accuracy: ±0.3% @ 25 °C. ±0.6% up to 55 °C. Diagnostics: Wire-break, short-circuit, supply voltage monitoring, LED indicators. Mechanical & Environmental: Dimensions (W x H x D): 45 x 100 x 75 mm. Weight: ~220 g. Mounting: DIN rail. Protection Rating: IP20. Operating Temp: –20 to +60 °C. Storage Temp: –40 to +70 °C. Humidity: Up to 95% (non-condensing). Compliance & Approvals: CE, UL, CSA, FM, RCM, KC. Marine: DNV, LRS, BV, RMRS, RINA, CCS. ATEX, IECEx. Environmental Product Declaration (EPD). Global Warming Potential: 43.1 kg CO₂ eq.