Product Overview

The SIMATIC S7-1200 Analog Input Module SM 1231 TC delivers high-precision temperature measurement with 8 thermocouple inputs. Supporting multiple thermocouple types (J/K/T/E/R/S/N/C/TXK/XK(L)) and 15-bit resolution, this module provides accurate temperature monitoring for industrial automation applications.

Key Features

• 8 Thermocouple Channels: Multi-point temperature measurement with 15-bit resolution
• Universal TC Support: J, K, T, E, R, S, N, C, TXK, and XK(L) thermocouple types
• Temperature Range: -200°C to +2300°C (depending on TC type)
• Direct Connection: No additional amplifiers required, ±80mV range support
• Advanced Diagnostics: Open wire detection and comprehensive alarm functions
• Compact Design: 45mm width with DIN rail mounting and integrated connections

Technical Specifications

• Inputs: 8 thermocouple channels, 15-bit resolution
• Dimensions: 45 × 100 × 75 mm (W × H × D) | Weight: 0.191 kg
• Operating Temperature: -20°C to +60°C (horizontal), -20°C to +50°C (vertical)
• Protection: IP20 | Power: 24V DC from CPU backplane
• Temperature Ranges: Type K (-200°C to +1350°C), Type J (0°C to +750°C), Type R/S (0°C to +1750°C), Type C (0°C to +2300°C)

Applications & Integration

Primary Applications:

• Process temperature monitoring, furnace control, heat treatment
• Chemical/petrochemical processes, power generation systems
• Industrial automation requiring multi-point temperature measurement

System Compatibility:

• All S7-1200 CPU series (1211C, 1212C, 1214C, 1215C, 1217C)
• TIA Portal configuration with STEP 7 Basic programming
• Hot-swappable installation with up to 8 modules per CPU
• Automatic temperature scaling and pre-configured function blocks

Quality & Compliance

• Status: Active Product (PM300) | Origin: China
• EAN: 6940408101906 | UPC: 887621424732
• RoHS Compliant: Since 30.08.2013 | WEEE: Take-back obligation applies
• REACH: Contains lead, lead oxide, and BPA above 0.1% w/w (safe when used as intended)

Package Contents

• 1 × SM 1231 TC Module (8 AI), technical documentation, DIN rail hardware

Download existing graphical data for this product:

• Technical Datasheet
• Product Information Page
• SM 1231 Product Family
• TIA Portal Documentation
• Technical Specifications