Siemens logo 6 and 8 sps programmable logic controllers siemens 6ed1052 1cc01 0ba8 the siemens logo 8 24ce 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 the 0ba8 controllers feature an ethernet interface and an integrated web server for networking up to 9 x logo unit