Quick answer: The Siemens SIMATIC CPU 1518-4 PN/DP (order code 6ES7518-4AP00-0AB0) is a high-performance S7-1500 PLC with 4096 KB program / 20 MB data and 1 ns bit processing. Flagship CPU, 1 ns processing, 3× PROFINET.
| Identification | |
| CPU Model | CPU 1518-4 PN/DP |
| Order Code (MLFB) | 6ES7518-4AP00-0AB0 |
| Performance | |
| Work Memory (Program) | 4096 KB |
| Work Memory (Data) | 20 MB |
| Bit Processing Speed | 1 ns per instruction |
| Load Memory | SIMATIC Memory Card (SD card, up to 32 GB) |
| Communication | |
| PROFINET | 3× PROFINET interfaces (each a 2-port switch) — supports RT and IRT |
| PROFIBUS DP | 1× PROFIBUS DP master/slave |
| OPC UA | Integrated OPC UA server (all S7-1500 CPUs) |
| Safety & Technology | |
| Functional Safety | Standard (no integrated safety) |
| Motion Control (Technology) | Standard (use S7-1500T for motion control) |
| Redundancy | Standard (no redundancy) |
| General | |
| Programming Software | TIA Portal V15.1 or later (LAD, FBD, STL, SCL, GRAPH) |
| Supply Voltage | 24V DC |
| Operating Temperature | 0°C to +60°C |
| Protection | IP20 (in S7-1500 rail) |
24-hour competitive quote. DDP delivery to CIS, SE Asia, Middle East.