Siemens SIMATIC S7-200 SMART Thermocouple Input Module

Siemens SIMATIC S7-200 SMART Thermocouple Input Module About

The Siemens 6ES7288-3AT04-0AA0 is an active, compact SIMATIC S7-200 SMART analog input expansion module (SM AT04). It is engineered specifically for high-accuracy temperature acquisition in small-to-medium industrial automation networks. This 45mm-wide expansion block scales up your PLC configuration by adding four analog inputs explicitly optimized for thermocouple sensor integration as detailed on Tradeindia.The differential channels process thermal data at an exceptional 15-bit plus sign resolution (16-bit ADC architecture), delivering highly accurate readings down to 0.1C or 0.1F shown on IndiaMART. Operating via a nominal 24V DC line with a minimal 1.5W typical power loss, it natively supports standard global thermocouple types. Housed in a durable, IP20-protected shell tailored for standard DIN rail layouts, the module incorporates built-in cold-junction compensation, noise filtering parameters, and front-facing diagnostic LEDs to swiftly isolate sensor wire breaks or out-of-range measurement anomalies.