B&R Industrial Automation X20AT4222 I/O Module

The X20AT4222 is a four-channel temperature input module for B&R’s X20 I/O system, designed to read RTDs such as Pt100 and Pt1000 sensors. Each channel supports Pt100/PT1000 RTDs with 2-, 3-, or 4-wire configurations to compensate lead resistance, enabling precise temperature measurement in industrial environments. The module is an X20 bus device identified by B&R ID-Code 0x1BA7 and is described in the X20(c)AT4222 data sheet (version 3.32, dated 08/2024). It integrates into the X20 I/O backplane and communicates over the Powerlink/X20 bus, enabling compact, scalable temperature monitoring in control panels and process lines. With four RTD inputs, it allows multi-point temperature sensing from a single module, simplifying wiring and reducing panel footprint. Typical applications include process-temperature monitoring in manufacturing, HVAC systems, and other environments requiring RTD-based temperature data for feedback control.