Siemens 6ED1 055-1CB00-0BA0 Expansion Module DM8

Siemens 6ED1055-1CB00-0BA0 Expansion Module DM8 is a compact 24‑V digital input/output expansion for the LOGO! family, designed to add four digital inputs and four digital outputs to a LOGO! controller, enabling more complex control tasks without replacing the main unit. The DM8 24 expansion provides four DI and four DO channels that operate at 24 V DC, allowing direct wiring to typical industrial sensors and actuators such as mechanical limit switches, photoelectric sensors, relays, and small actuators, with wiring kept simple by the LOGO! interface. Because it is designed to integrate with LOGO! logic modules, it preserves the compact footprint and straightforward configuration of LOGO! systems, offering a scalable solution for small automation projects like packaging lines, conveyors, machine panels, or process control loops where additional discrete I/O is needed. The 6ED1055-1CB00-0BA0 designation identifies the DM8 24 expansion variant, and Siemens catalogs also reference a near-identical revision 6ED1055-1CB00-0BA2, providing continuity for compatibility and replacement parts.