Build the redundant pair
Install two 6ES7515-2RN03-0AB0 CPUs, provide one SIMATIC Memory Card for each CPU and connect the station devices through the planned PROFINET ring. The two CPUs may share one mounting rail or use separate rails.
Product Overview
Siemens 6ES7515-2RN03-0AB0 is the CPU 1515R-2 PN for the SIMATIC S7-1500R/H redundant system. It executes the control program while participating in a two-CPU arrangement designed to keep process control assigned to an available CPU.
Within a redundant station, 6ES7515-2RN03-0AB0 operates with a second CPU 1515R-2 PN, one SIMATIC Memory Card per CPU and a PROFINET ring. The active unit serves as the primary CPU, the second unit follows as backup, and synchronization keeps the relevant data ready for a role change.
At the panel boundary, 6ES7515-2RN03-0AB0 receives 24 V DC through X80, places the two-port X1 interface on the redundant PROFINET path and provides the separate one-port X2 Ethernet interface. Its display, control keys and status LEDs expose configuration and diagnostic information without replacing the network-level checks used for the redundant pair.
Technical Specifications
| Brand | Siemens |
|---|---|
| Model | 6ES7515-2RN03-0AB0 |
| Product Name | SIMATIC S7-1500R/H CPU 1515R-2 PN redundant CPU |
| Brand Country | Germany |
| Hardware / Firmware | FS04 / V3.1 |
| Supply Voltage | 24 V DC rated; 19.2 to 28.8 V DC permitted |
| Work Memory | 1 MB program; 4.5 MB data |
| Load Memory | SIMATIC Memory Card required; up to 32 GB |
| PROFINET Interfaces | X1: two-port integrated switch; X2: one port |
|---|---|
| System Redundancy | PROFINET S2 supported; R1 not supported |
| Connections | 256 maximum; 128 through integrated interfaces |
| Programming Languages | LAD, FBD, STL, SCL and GRAPH |
| Horizontal Operation | -30 to +60 °C, no condensation |
| Vertical Operation | -30 to +40 °C, no condensation |
| Dimensions (W × H × D) | 70 × 147 × 129 mm |
| Weight | Approximately 456 g |
Redundant System Integration
The integration sequence for 6ES7515-2RN03-0AB0 follows the actual redundant-system relationships: build the pair, assign the operating roles and confirm the synchronized ring before process control is expected to transfer between CPUs.
Commission primary and backup roles
Load the coordinated project to both 6ES7515-2RN03-0AB0 CPUs, assign the required network and redundancy identities, and verify that one CPU assumes process control while the other follows as backup. The assigned roles can change during operation.
Verify the synchronized path
Check the complete 6ES7515-2RN03-0AB0 ring, the associated IO devices and the synchronization state before relying on a fast role change. An open or incorrectly routed ring changes the redundancy path even when an individual CPU remains powered.
Diagnostics and Protection
Diagnostics on 6ES7515-2RN03-0AB0 combine front-panel state, network-link indication and protected engineering access. The checks below separate a CPU state problem from a display, connection or access-control issue.
1
Read the operating state
On 6ES7515-2RN03-0AB0, the RUN/STOP, ERROR, MAINT and STOP ACTIVE LEDs distinguish controller state from maintenance and stop conditions. LINK RX/TX indicators then show whether the expected X1 and X2 port links are present.
2
Use the display for identification
The 6ES7515-2RN03-0AB0 display provides diagnostic messages together with article number, firmware version, serial number, IP data, PROFINET device name and redundancy ID. If the display switches off at its temperature threshold, the LEDs continue to report CPU status.
3
Protect power and access
The 24 V DC input of 6ES7515-2RN03-0AB0 includes reverse-polarity protection, while display passwords, write protection, read/write protection, complete protection and user administration control engineering access. These controls must be assigned as part of the project rather than treated as default site security.
Frequently Asked Questions
Do I need one or two 6ES7515-2RN03-0AB0 units for a redundant station?
A redundant S7-1500R station uses two 6ES7515-2RN03-0AB0 CPUs and two SIMATIC Memory Cards. One article number identifies one CPU, so the required quantity must be planned for the complete two-CPU station rather than inferred from the word redundant.
What should be checked before replacing one 6ES7515-2RN03-0AB0 in an existing pair?
Keep 6ES7515-2RN03-0AB0 as the exact article number, then compare the installed hardware functional status, firmware, memory card, TIA Portal project and redundancy configuration. A neighboring 1515R catalog or a different firmware project must not be assumed to be a like-for-like member of the pair.
Why can a 6ES7515-2RN03-0AB0 pair report a redundancy problem while both CPUs remain powered?
The two 6ES7515-2RN03-0AB0 CPUs depend on the PROFINET ring for the redundancy connection and synchronization path. Inspect both X1 ring links, the ring routing and the relevant LINK RX/TX and redundancy diagnostics instead of treating power on both CPUs as proof that synchronization is intact.
Why is the display on 6ES7515-2RN03-0AB0 dark even though its LEDs are active?
The 6ES7515-2RN03-0AB0 display can switch off when its display temperature threshold is reached, while the CPU LEDs continue indicating operating state. Read the LEDs and system diagnostics first, then confirm the installation orientation and ambient temperature before treating the display itself as failed.
Can X2 on 6ES7515-2RN03-0AB0 replace an X1 redundancy-ring port?
No. On 6ES7515-2RN03-0AB0, X1 is the two-port PROFINET interface with the integrated switch and media-redundancy support; X2 is a separate one-port interface without media redundancy. Wire the ring through the intended X1 ports and reserve X2 for its configured Ethernet communication task.
Which TIA Portal version matches 6ES7515-2RN03-0AB0 firmware V3.1?
For 6ES7515-2RN03-0AB0 with firmware V3.1, use TIA Portal V19; firmware V3.0 is integrated from V18. If an older engineering environment is involved, verify how the project represents the CPU before downloading, because the exact article may be configured through an earlier catalog representation.
About Moore Automation
Moore Automation
https://www.mvme.cnMoore Automation supports industrial automation part enquiries across PLC, DCS, drive, monitoring and instrumentation hardware. Product references, requested quantities and destination details are kept together for enquiry review.
For Siemens 6ES7515-2RN03-0AB0, the visible article number, required quantity and target S7-1500R station can be included so the response stays tied to the requested CPU.
Model reviewComplete product references and requested quantities stay together.
Supply scopePLC, DCS, drive, monitoring and instrumentation enquiries can be coordinated.
Packing detailsProduct form and destination information guide shipment preparation.
Direct contactOne named sales contact keeps the enquiry route clear.
Recommended Products
Siemens6ES7288-2QT16-0AA0
Bently Nevada330701-00-10-10-02-00
Allen-Bradley1336F-BRF10-AA-EN
TriconexAO3481S2
Woodward8446-1068
GE60X/CFG
Vibro-MeterCPUM Mk2 600-050
Siemens6ES7288-2QR16-0AA0
Bently Nevada330425-01-00
Allen-Bradley8403X-1
TriconexDO3401S2
Woodward9907-010
GE60R/PPM01-02-0
Vibro-MeterIOCN Mk2 600-051
Siemens6ES7288-2DR32-0AA0
Bently Nevada200355-00-00-00
Allen-Bradley3009X
TriconexAI3351S2
GE60R/PNL01-02-0
Vibro-MeterCPUR2 600-026-000-002
Siemens6ES7288-1CR60-0AA0
Bently Nevada330910-00-24-10-01-CN
Allen-Bradley84661-08
Triconex8106
GE60R/PIM01-02-0
Vibro-MeterIOCR2 620-022-000-112
Siemens6ES7288-7DP01-0AA0
Bently Nevada3500/77M 143737-01
Allen-Bradley1336F-B050-AA-EN
Triconex3720
GE60R/INP06-02-0
Vibro-MeterXIO16T 620-002-000-113
Siemens6ES7288-3AM06-0AA0
Bently Nevada330101-00-20-05-02-00
Allen-Bradley2094-BC01-MP5-S
Triconex3674
GE60R/BLK01
Vibro-MeterCPUR2 601-026
Siemens6ES7288-2DT08-0AA0
Bently Nevada330173-00-05-10-02-00
Allen-Bradley25B-D1P4N104
Triconex3603B
GEIC610CHS101
Vibro-MeterMPC4 200-510-074-114
Siemens6ES7288-1SR20-0AA1
Bently Nevada330905-00-25-05-02-IN
Allen-Bradley22-HIM-A3
Triconex3564
GEIC200UAR028
Vibro-MeterIOC4T 200-560-000-114
Siemens6ES7211-1AE40-0XB0
Bently Nevada60M500-05-00
Allen-Bradley2711PC-T10C4D1
GEIC200UAA007
Vibro-MeterIOC16T 200-565-000-012
Siemens6ES7231-5ND32-0XB0
Bently Nevada330106-05-30-10-02-IN
Allen-Bradley2711P-T15C22D9PK
GEHE800ACM200
Vibro-MeterRLC16 200-570-000-014
No related record found