ABB 1SAP140100R0100 - PM581 CPU (AC500)

The ABB 1SAP140100R0100 is the order code for the PM581 CPU of the AC500 PLC family, described by distributors as a programmable logic controller with 256kB of program memory, 24 VDC supply, two RS232/RS485 serial interfaces, FBP interface, SD card slot and LCD display. ABB conformity documentation lists the code as PM581, and listings across major distributors show consistent catalog descriptions, EAN references and stock. The PM581 is a mid-range AC500 CPU suited to larger control applications than the PM571 class, and it mounts on AC500 terminal bases such as TB511-ETH and TB521-ETH. Used and refurbished units are commonly offered with warranty; confirm firmware revision before ordering.