... Professional Service 4.New and original 5.Siemens S7300 series PLC Siemens PLC S7200 and S7300 CPU312/313/ ... S7-300 CPU 315-2 PN/DP,CENTRAL PROCESSING UNIT WITH256 KBYTE WORKING MEMORY,1. INTERFACE MPI/DP ... -2DPSIMATIC S7-300, CPU 317-2DP,CENTRAL PROCESSING UNIT WITH512 KBYTE WORKING MEMORY,1. INTERFACE MPI/DP ... S7-300 CPU 319-3 PN/DP,CENTRAL PROCESSING UNIT WITH1,4 MBYTE WORKING MEMORY,1. INTERFACE MPI ...