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The 1746-NR4 is obsolete. Allen Bradley stopped actively pushing SLC 500 hardware years ago. But "obsolete" isn't the same as "useless." The manual represents a time when engineers wrote documents to educate , not just to comply with ISO standards.
The is a specialized 4-channel analog input module designed for the SLC 500 family of programmable logic controllers. This module is primarily used to interface with Resistance Temperature Detectors (RTDs) and other resistance devices like potentiometers, providing high-resolution temperature and resistance data directly to the SLC processor. 1746-nr4 manual
Note: The manual includes a complete example for RSLogix 500. The 1746-NR4 is obsolete
The 1746-NR4 module offers several benefits, including: The is a specialized 4-channel analog input module
The is more than a dusty PDF; it is a vital tool for maintaining the reliability of SLC 500-based control systems. By understanding the DIP switch configuration, following the exact wiring diagrams for 3-wire RTDs, and interpreting the status bits in the input image table, you can achieve precision temperature measurement with this legacy workhorse.