Siemens 6ES7431-7QH00-0AB0 Industrial PLC CPU Module

Siemens 6ES7431-7QH00-0AB0 is a 16‑channel analog input module for the SIMATIC S7‑400 PLC family, designed to expand your controller’s ability to read analog signals from sensors and transducers and convert them into digital values the CPU can process. The unit provides 16 analog input channels and is listed for a 24 VDC input environment, making it suitable for standard industrial sensors and signal conditioners. It supports multiple signal types with configurable input ranges, including DC voltage, DC current (such as 0–20 mA), and RTD/thermocouple inputs, in line with Siemens data sheets describing the 6ES7431‑7QH00‑0AB0 family. Typical applications include process monitoring, machine automation, and multi‑point data acquisition where parallel analog readings are required for real‑time control and logging. Key specs at a glance: 16 analog inputs; supports voltage, current, RTD, and thermocouple signal types with configurable ranges; designed for use with SIMATIC S7‑400 backplanes in the Siemens ecosystem, enabling seamless integration with the CPU and engineering tools.