Siemens 6GK5980-3BC00-0AA5 Automation Connection Component. Siemens 6GK5980-3BC00-0AA5 is the exact manufacturer order number for a automation connection component in the SCALANCE Industrial Ethernet portfolio. Siemens describes this exact reference as: Serial cable M12/RS232; Pre-assembled serial cable with M12 and RS232 connector; Length 3 m; 1 pack = 1 unit. The verified manufacturer lifecycle record is PM300: Active Product.