Allen Bradley SLC 500 PLC 1747-L531

The Allen-Bradley RSLogix 500 1747-L531 is an SLC Processor for the SLC 500 PLC platform. The product by Rockwell Automation in active service due to their extreme reliability and the massive installed base of SLC 500 hardware. The 1747-L531 is the entry-level CPU within the 5/03 family, defined primarily by its memory capacity.

Technical Specification:

Feature	Specification
Processor Type	SLC 5/03
User Memory	8 KB (Instruction/Data words)
I/O Capacity	Max. 4096 Discrete / 480 Analog
Local I/O Chassis	Up to 3 chassis (30 slots total)
Typical Scan Time	0.6 ms per 1K of program
Programming Software	RSLogix 500
Battery	1747-BA (Lithium) for memory backup