Siemens 6ES7241-1CA50-0XB0 Automation Connection Component. Siemens 6ES7241-1CA50-0XB0 is the exact manufacturer order number for a automation connection component in the SIMATIC S7-1200 portfolio. Siemens describes this exact reference as: SIMATIC S7-1200 G2: CB 1241 Communication Board, interface: RS485, with push-in terminal block. The verified manufacturer lifecycle record is PM300: Active Product.