The Siemens 6ES7288-1ST40-0AA1 is a SIMATIC S7-200 SMART CPU ST40, a compact and powerful programmable logic controller (PLC) designed for a wide range of automation tasks. This standard CPU model is engineered to deliver excellent performance for small to medium-sized applications, offering a cost-effective solution without compromising on functionality. It features a substantial number of integrated digital inputs and outputs, along with built-in Ethernet and RS485 communication ports, ensuring seamless connectivity and integration into existing systems. With a generous program and data memory, the CPU ST40 is ideal for controlling standalone machines, production lines, and building automation systems, providing reliability and efficiency in a compact form factor.