Siemens 6ES7370-0AA01-0AA0 Industrial Automation Module — Legacy Replacement. Siemens 6ES7370-0AA01-0AA0 is the exact manufacturer order number for a industrial automation module in the SIMATIC S7-300 portfolio. Siemens describes this exact reference as: ***spare part*** SIMATIC S7-300, dummy module DM 370, dummy module use for module replacement. The verified manufacturer lifecycle record is PM410:Product cancellation.