Siemens 6ES7231-5QD32-0XB0 Programmable Logic Controller Module

Siemens SIMATIC S7-1200 SM 1231 TC analog input module, model 6ES7231-5QD32-0XB0, provides four thermocouple inputs for precise temperature monitoring in SIMATIC S7-1200 systems. Each channel accepts thermocouples of types B, C, E, J, K, N, R, S, T, and TXK/XK(L) with an input range of -80 mV to +80 mV and a destruction limit of ±35 V, using a 16‑bit ADC per channel with an integrating measurement principle for accurate readings. It is powered from the backplane at 5 V with a rated 24 V DC supply, drawing typ. 40 mA from the backplane and up to 80 mA on the 5 V bus, with a typical power loss of 1.5 W. Weighing about 0.160 kg and RoHS compliant, the module’s packaging dimensions are roughly 8.8 × 10.9 × 5.7 cm, and it belongs to the SM 1231 TC family designed for direct temperature sensing in industrial processes and automation applications with the S7-1200 controller.