Schneider Electric TWDDDI16DT Expansion Module

Schneider Electric TWDDDI16DT is a 16-channel discrete input expansion module for the Twido PLC family, delivering 16 digital 24 V DC input points to a Twido base. The module uses a removable screw-terminal block for easy connection of 24 V DC signals, enabling reliable expansion of I/O in compact automation setups. It is designed to work with Schneider Electric’s Twido bases as part of the discrete I/O expansion line, providing sixteen 24 V DC input channels that mirror the standard Twido 24 V logic level. This is a legacy Twido module that Schneider Electric lists as End of Sale on December 31, 2016, with formal end-of-service noted by December 31, 2021. For users migrating to newer hardware, Schneider Electric specifies the TM3DI16 (Modicon TM3 family) as the replacement option for 16-input, 24 V DC applications, typically offered with a screw-terminal connection. If you are maintaining an existing Twido system that relies on TWDDDI16DT, this module delivers the required 16-channel 24 V DC input expansion; for new designs, the TM3DI16 or later TM3 family is recommended to ensure ongoing support and availability.