The Allen-Bradley 1747-L552 SLC 500 Processor is a PLC CPU module for SLC 500 racks (SLC 5/05 series) that executes control logic, manages I/O operations, and enables communication between field devices and network systems in industrial automation. It provides 32K words of user memory, Ethernet (EtherNet/IP) and RS-232 ports, and supports up to 4096 inputs and 4096 outputs with support for up to 480 analog I/O points. As a chassis-mounted module for SLC 500 racks, it fits in up to 3 chassis with a total of 30 module slots, programs in ladder logic, and includes battery backup. Common replacements for this part include Allen-Bradley 1747-L553, 1747-L551, and 1747-L542.
