Schneider Electric TWDLMDA20DRT Modular Base Controller

The Schneider Electric TWDLMDA20DRT is a Twido modular base controller—a programmable logic controller (PLC)—that combines a processor, 20 onboard I/O, and a 24 VDC power supply in a compact DIN-rail PLC processor module. It provides 12 digital inputs and 8 digital outputs (6 relays, 2 transistor sources) and supports up to seven expansion modules with two free expansion slots for scalable discrete control. Memory is cartridge-based, supporting 32 KB or 64 KB memory cartridges with real-time clock support, and the unit is designed for Twido PLC systems. Commonly used in packaging machinery, conveyors, material handling, water treatment systems, and OEM production equipment, this discontinued legacy module has replacements such as Schneider Electric TM221M16R, TM221M16T, or OEM equivalents.