Maintenance
14.1 Replacing components of the S7-1500R/H redundant system
S7-1500R/H redundant system
452 System Manual, 01/2024, A5E41814787-AF
Procedure: Replacing the PROFINET cable
Proceed as follows to replace the defective PROFINET cable:
1. Check the X1 P1/X1 P2 LEDs on the primary and backup CPU. LEDs that are off indicate an
interruption to the PROFINET ring.
2. Locate the defective PROFINET cable in the PROFINET ring. Check the link RX/TX LEDs of the
PROFINET nodes. If the link RX/TX LEDs are switched off, there is no connection between the
interface of the PROFINET device and the communication partner.
3. Replace the defective PROFINET cable.
Result
The defective PROFINET cable has been replaced.
The X1 P1/X1 P2 LEDs on the primary and backup CPU are yellow. The MAINT LEDs on both
CPUs are off.
14.1.5 Replacing a defective SIMATIC memory card
Initial situation
The SIMATIC memory card of a CPU is defective. System diagnostics reports a system error.
The CPU affected has switched to the STOP operating state.
The S7-1500R/H redundant system is in the RUN-Solo system state.
Replacing defective SIMATIC memory card in HF
-CPU with safety program
You can find the exact procedure in the SIMATIC Safety
- Configuring and Programming
https://support.industry.siemens.com/cs/ww/en/view/54110126) programming and
Requirement
• Read the information in the section Checking before replacing components (Page 443).
• The new SIMATIC memory card must have sufficient memory for the project.
Procedure
Proceed as follows to replace a defective SIMATIC memory card:
1. Replace the SIMATIC memory card in the CPU in STOP.
2. Start the CPU.
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