The central processing units (CPUs) are the heart of the SIMATIC S7-1500 controller. They execute the user program and network the controller with other automation components. Thanks to numerous innovations, the CPUs of the SIMATIC S7-1500 PLC deliver the ultimate plus in productivity and efficiency. The hardware is extremely compact and certified to IP20 or IP65/67 standard. These highly integrated, highly versatile modules save space in and around the cabinet and reduce the spare parts inventory costs.