Siemens 6ES7231-5QF32-0XB0 Programmable Logic Controller

Siemens 6ES7231-5QF32-0XB0 is an eight-channel analog input expansion module (SM 1231 TC) for the SIMATIC S7-1200 family, delivering eight thermocouple inputs for direct temperature sensing in an automation system. This module enables temperature monitoring by accepting thermocouple sensors across channels—supporting thermocouple types B, C, E, J, K, N, R, S, and T—so you can tailor measurements to a wide range of process requirements. As part of the SIMATIC SM 1231 series, it integrates with S7-1200 controllers to extend analog input capabilities, commonly powered from the system’s 24 V DC supply and connected via the backplane for synchronized data exchange. Ideal for temperature analysis in process control, manufacturing automation, and equipment monitoring, this module provides a compact, DIN-rail-ready solution for expanding an existing S7-1200 installation with robust thermocouple measurement across eight channels.