The Cincinnati Milacron 3-531-4350A Input Module is a circuit-board input interface used in Cincinnati Milacron control systems. In listings it is described as an HDCI input card or PLC slot card bearing the 3-531-4350A designation and sold as a replacement part for Milacron equipment. Available as used or refurbished through third-party suppliers, it appears in listings from Ideal Machinery, Machinio, and various marketplaces, with references to revisions such as Rev A or Rev D. Some listings note it was removed from a 440-ton Cincinnati Milacron injection-molding machine, illustrating its role in older Milacron machinery.
