Description

Parameter Details Product Series SIMATIC S7-1200 (SM 1231 Analog Input Module) Number of Digital Inputs (DI) Not Applicable Number of Digital Outputs (DO) Not Applicable Supply Voltage 24 V DC Output Type Digital (converted from analog signals) Work Memory Not Applicable (I/O Module) Communication Protocol Backplane Bus (S7-1200 internal communication) Number of Analog Inputs (AI) 8 Channels Number of Analog Outputs (AO) Not Applicable Detailed Technical Data Module Type: SM 1231 Analog Input Input Signal Type: Voltage & Current (Differential) Voltage Ranges: ±10 V, ±5 V, ±2.5 V Current Ranges: 0–20 mA / 4–20 mA Resolution: 12-bit + sign (13-bit ADC) Current Consumption: ~45 mA (typical) Power Loss: Approx. 1.5 W Max Input Voltage: 35 V Max Input Current: 40 mA Protection Class: IP20 Mounting: DIN rail (S7-1200 rack system) Weight: Approx. 0.18–0.19 kg Key Features 8 high-resolution analog input channels Supports both voltage and current signals Fast signal conversion with high accuracy Compact modular design for S7-1200 PLC Easy integration with TIA Portal Reliable for industrial automation environments