Siemens 6ES7400-1TA01-0AA0 Subrack Interface Module is a SIMATIC component designed to be installed in a subrack, providing a dedicated interface for connecting rack-mounted I/O to the controller. The part number 6ES7400-1TA01-0AA0 uniquely identifies this module within Siemens' automation architecture. In product listings it is described as a Simatic Sub Rack Module, confirming its role as a compact interface unit inside a Siemens subrack.
