Features:
- The CPU 1515R-2 PN executes the user program within a SIMATIC S7-1500R redundant arrangement.
- X1 and X2 divide PROFINET IO control from independent Ethernet communication.
- Load memory depends on a SIMATIC Memory Card, while diagnostics and traces remain separate analysis resources.
The redundant CPU role belongs to an R-system architecture; it does not turn every interface into the same network function.
X1 carries the switched IO-controller and ring responsibilities, whereas X2 is retained as a distinct communication path.
Program loading, retained events, and trace capture use different memory areas and must be planned independently.
The Siemens 6ES7515-2RM00-0AB0 CPU 1515R-2 PN Redundant Controller may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7515-2RM00-0AB0 CPU 1515R-2 PN Redundant Controller Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
How the redundant CPU resources are organized
- CPU role: The module is a CPU 1515R-2 PN for a SIMATIC S7-1500R redundant system.
- Program space: Work memory is divided into 500 KB for the program and 3 MB for data.
- Load location: A SIMATIC Memory Card is mandatory and supports load-memory capacity up to 32 GB.
- Process image: Input and output address areas are each documented at 32 KB.
How X1 and X2 divide network duties
- X1: Two switched ports form the PROFINET IO controller interface and support up to 64 IO devices.
- X2: One independent Ethernet port provides SIMATIC server and open IE communication.
- Ring function: MRP is assigned to X1 rather than to the X2 interface.
- Connection pool: The CPU supports a documented maximum of 108 connections across its communication resources.
How the ring responds to a line break
- Topology: The redundant media path is built on the two switched X1 ports.
- Typical recovery: A line break is followed by a typical MRP switchover time of 200 ms.
- Traffic path: During recovery, communication is redirected through the remaining ring path.
- Scope: The timing describes network-path recovery and is separate from CPU processing time.
How event history and trace capture differ
- Diagnostics history: The buffer holds 3,200 entries for operational events.
- Retained portion: Five hundred diagnostics entries remain power-failure-proof.
- Trace set: Four trace resources are available, each with 512 KB.
- Use boundary: The diagnostic buffer records event history, while traces capture configured signal behavior for analysis.