Siemens 6ES7153-1AA03-0XB0SIMATIC DP, connection IM 153 1, for ET 200M, for max. 8 S7 300 modules What type of Siemens module is this? This is a Siemens ET 200M interface module used in distributed I O systems. What role does this module play in an automation system? It serves as the interface between the ET 200M I O station and the higher level PLC or network. Which PLC systems is this module commonly used with? It is typically used with Siemens S7 300 based distributed I O