Allen-Bradley 1747-L541 SLC 500 Processor Module

Allen-Bradley 1747-L541 is a SLC 500 Series 5/04 processor module that serves as the central controller for the SLC 500 system, compatible with DH+ and RS-232 serial communications and designed to work with the 1747-OS401 firmware family. It provides up to 16,000 words of user memory (16K words) and supports up to 4,096 digital inputs and 4,096 digital outputs, enabling large I/O configurations in a compact form. With a program scan time of about 0.9 ms and an I/O scan time around 0.225 ms, this CPU handles discrete control tasks efficiently in industrial environments. Installed in a compatible SLC 500 chassis, it is suitable for applications such as conveyors, automated packaging, and general machine control where a robust, modular PLC with DH+/RS-232 connectivity is advantageous.