Source Best price S7-1500 CPU 1513-1 PN Central processing unit memory 300 KB 6ES7 513-1AL00-0AB0 on m.alibaba.com
CPU 1513-1 PN (6ES7513-1AL00-0AB0)
New Industrial 6es7511-1ak02-0ab0 Original Genuine CPU 1511-1 Pn Model Siemens with Working Memory 150 Kb for Program and 1 MB for Data - China PLC, PLC Controller | Made-in-China.com
Siemens - 6ES75131AL010AB0 - CPU 1513-1 PN, 300KB PROG., 1,5MB DATA - RS