Model Type:SIMATIC S7-300
Model Number:6ES7331-7KFO2-OABO
Manufacturer:SIEMENS
Dimensions (W x D x H):2.441 x 3.583 x 0.787 inches
Weight:0.095 lbs
Analog Input Channels:2
Resolution:9/12/14 bits
Input Types:Voltage, Current, Thermocouple, Resistance
Operating Range:-20°C to 85°C
Optical Isolation:Yes
Interrupt & Diagnostic Features:Yes
Communication Interface:DI / DO
Power Consumption:1.5 W max.
The SIEMENS 6ES7331-7KFO2-OABO SM331 Analog Input Module is engineered to enhance the precision and reliability of industrial automation systems. This module is a cornerstone of the SIMATIC S7-300 family, providing an efficient solution for data acquisition in diverse applications.
With its robust design and 4 high-quality analog input channels, this module ensures accurate signal processing across a wide range of industries. The inclusion of optical isolation protects against electrical interference, ensuring stable performance under varying conditions.
Featuring a cycle time of 110 ms per channel, the module supports fast response times critical for dynamic control environments. Its compatibility with various signal types, including universal input, thermocouples, and resistance measurements, makes it adaptable to a multitude of applications.
Operated within a temperature range from -25°C to +60°C, this module is suitable for use in extreme conditions without compromising performance. Its compact dimensions (15 mm x 13.20 mm x 5.10 mm) and lightweight design (0.293 kg) enable easy integration into space-constrained systems.
Equipped with diagnostics functions, the SIEMENS 6ES7331-7KFO2-OABO ensures proactive maintenance, allowing for timely identification and resolution of issues. This feature contributes to enhanced system uptime and productivity.

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