Siemens 505-ATM-0440 Analog Input Expansion Module

505-ATM-0440 Analog Input Expansion Module is a legacy Texas Instruments expansion card for the TI 505/ATM control family that adds extra analog input channels to a 505-series controller. Documentation describes it as a triple-wide module within the 505 ecosystem, designed to extend the input capability of the system. The configuration is associated with a 4 MB memory context for this module, reflecting its role in combined input and memory expansion in certain setups. Common applications include retrofitting older industrial control systems that rely on analog sensing from process signals when a TI 505/ATM backbone is already in place.