Allen-Bradley 1747-L532 SLC 5/03 PLC Processor

The Allen-Bradley 1747-L532 SLC 5/03 Processor is a modular CPU for the SLC 500 family that runs ladder logic for industrial automation. It includes 16K of memory and firmware revision FRN 8, and provides an RS-232 serial port for programming/diagnostics plus a DH+ network port for backplane or remote I/O connectivity. Backbone current draw is up to 1.0 A at 5 V DC and 200 mA at 24 V DC, with an operating ambient temperature range of 0 to 60 C as listed in its specifications. This processor targets discrete control tasks such as batch sequencing, packaging lines, and general machine control, managing I/O within a standard SLC 500 installation. Being part of Rockwell Automation’s legacy automation ecosystem, the 1747-L532 remains compatible with the broader SLC 500 tooling and install base, making it suitable as a spare or retrofit for older lines that rely on RS-232 programming and DH+ communication. The FRN 8 designation indicates the firmware revision associated with this module, and the device is cataloged as a 1747-L532 SLC 5/03 processor with 16K memory and dual communication capabilities.