Siemens logo standard slave module for plc series 0ba6 and 0ba7 siemens 3rk1400 0ce10 0aa2 a standard plc slave unit that is designed for use with logo 0ba6 and 0ba7 series plcs the unit has an as interface and can be linked into the logo system as an intelligent slave siemens 3rk1400 0ce10 0aa2 logo add on module