Siemens 6ES7515-2AM00-0AB0 CPU, DCP IRT MRP PID

The 6ES7515-2AM00-0AB0: This S7-1500 CPU is the one with DCP and full MRP redundancy manager capability — it can run the ring with up to 50 devices. It supports all five IEC languages (LAD, FBD, STL, SCL, GRAPH), integrated PROFINET IRT, and HTTP/HTTPS web server for diagnostics. Process image is 32 kbyte each for inputs and outputs, enough for a mid-size line. Hardware clock on board, backup time 6 weeks at 40 °C. No PROFIsafe — this is a standard controller, not a safety CPU. If your application requires fail-safe I/O, you need a separate safety CPU or a F-CPU. Integrated PID controllers — one for temperature (with optimization), one for valves. That saves a slot on a loop controller, handy for process skids.