Siemens logo 6 and 8 sps programmable logic controllers siemens 6ed1052 1md00 0ba6 the siemens logo 6 1224rc is a din rail mounted modular programmable logic controller plc for simple industrial and building services applications it has a 4 x 32 character display and a set of push buttons for navigating menus text set points real time values bar graphs and status reports with a 200 x programme block capacity 8 x digital inputs and four digital outputs the logo range is expandabl