Siemens SIMATIC PLC 6AG1277-1AA10-4AA0 SIPLUS NET CSM 1277    WITH CONFORMAL COATING    BASED ON 6GK7277-1AA10-0AA0    .    COMPACT SWITCH MODULE CSM 1277    CONNECTION SIMATIC S7-1200 AND    UP TO 3 ADDIT. DEVICES TO    IND. ETHERNET W. 10/100 MBIT/S 6AG12771AA104AA0