Siemens 6ES7231-5QD32-0XB0 Analog Input Module

Siemens 6ES7231-5QD32-0XB0 is a SIMATIC S7-1200 SM 1231 TC analog input module that provides four thermocouple input channels (4 AI TC) for direct temperature sensing within a SIMATIC S7-1200 system. It is designed to plug into the S7-1200 backplane and operate with a 24 V DC supply, enabling compact temperature monitoring in automation projects.

Each of the four channels offers 16-bit resolution per input, with temperature compensation that is parameterizable to improve measurement accuracy across varying ambient conditions. The module supports a broad range of thermocouple types, including B, C, E, J, K, N, R, S, T, and TXK/TXK(L) to GOST, allowing engineers to select the appropriate sensor family for their process requirements. This flexibility makes it suitable for industrial temperature monitoring in applications such as process control, equipment cooling and heating loops, and machine automation where precise thermocouple readings are essential.