Siemens - 6ES7516-3AP03-0AB0 - SIMATIC S7-1500, CPU 1516-3 PN/DP, central processing unit with 2 MB work memory
Siemens 6ES7315-2AH14-0AB0 SIMATIC S7-300, CPU 315-2DP Central processing unit with MPI Integr. power supply 24 V DC
Siemens - 6ES7314-1AG14-0AB0 - SIMATIC S7-300, CPU 314 Central processing unit with MPI, Integr. power supply 24 V DC, work memory 128 KB, Micro Memory Card required