Siemens 6ES7902-2AB00-0AA0 Automation Connection Component — Legacy Replacement. Siemens 6ES7902-2AB00-0AA0 is the exact manufacturer order number for a automation connection component in the SIMATIC S7-300 Connection System portfolio. Siemens describes this exact reference as: SIMATIC S7/M7, cable for point-to-point connections TTY-TTY 9-pole D-sub pins respectively 5 m length. The verified manufacturer lifecycle record is PM490:Start of final year of support.