Siemens logo 6 7 and 8 sps plc expansion modules siemens 6ed1055 4mh00 0ba1 the siemens logo 8 dm8 24 display module extends the logo 8 programmable logic controllers with a 6 x 20 backlit character lcd screen choose between 3 x backlight colours for best contrast in your environment the 10 x membrane keys are divided into 4 x function keys 4 x arrow keys plus esc and enter it also features 2 x industrial ethernet interfaces siemens 6ed1055 4mh00 0ba1 logo 8 sps plc expansion modul