Siemens 6ES7650-1BA02-0XX0 Interface Module — Legacy Replacement. Siemens 6ES7650-1BA02-0XX0 is the exact manufacturer order number for a interface module in the SIMATIC S7-300 Connection System portfolio. Siemens describes this exact reference as: SIMATIC PCS7, red. Power MON. monitoring module for input voltage monitoring of the ET200M interface module Contact load: Max. 30 V DC, 0.5 A. The verified manufacturer lifecycle record is PM400:Announcement of product phase-out.