6ES7331-7PF01-0AB0

Siemens 6ES7331-7PF01-0AB0 – RTD analog input module for SIMATIC S7-300

The Siemens 6ES7331-7PF01-0AB0 (SM331) is an 8-channel analog input module designed for precise RTD temperature sensor measurement in SIMATIC S7-300 automation systems. It supports PT100, PT1000 and other RTD types, offering high accuracy, low noise performance and a 14-bit resolution for industrial temperature monitoring. The module integrates easily into existing S7-300 racks and provides stable operation in demanding industrial environments.

Key features and benefits:

• 8 RTD analog input channels
• Supports PT100, PT1000 and other RTD sensors
• 14-bit measurement resolution
• Galvanic isolation between channels and backplane
• High measurement stability and low noise
• Compatible with SIMATIC S7-300 rack modules

Typical applications:

• Industrial temperature monitoring
• Process control systems
• HVAC and thermal regulation
• Heating/cooling systems
• Manufacturing and automation lines

About the manufacturer:

Siemens is a global leader in industrial automation, known for high-reliability PLC systems and precise I/O modules used in advanced control architectures.