Cpu Reset To Factory Settings - Siemens SIMATIC S7-1500 System Manual

15.5

CPU reset to factory settings

Introduction
"Reset to factory settings" restores the CPU to its delivery state. The function deletes all
information that was stored internally on the CPU.
Recommendation:
Switch the CPU to its as-delivered condition if:
• You remove a CPU and use it elsewhere with a different program
• You store the CPU
When resetting to factory settings, remember that the IP address parameters are also deleted.
Options for resetting a CPU to factory settings
To reset the CPU to its delivery state, follow these steps:
• Using the mode selector
• Using STEP 7
• Using the SIMATIC Automation Tool
Procedure using the mode selector
Make sure that the CPU is in STOP: The RUN/STOP LED lights up yellow.
Note
Reset to factory settings ↔ Memory reset
The procedure described below corresponds to the procedure for a memory reset:
• Selector operation with inserted SIMATIC Memory Card: CPU executes a memory reset
• Selector operation without inserted SIMATIC Memory Card: CPU executes reset to factory
settings
Restore the factory settings of the CPU as follows:
1. Set the mode selector to the STOP position.
Result: The RUN/STOP LED lights up yellow.
2. Remove the SIMATIC Memory Card from the CPU. Wait until the RUN/STOP LED stops
flashing.
3. Set the mode selector to the MRES position. Hold the mode selector in this position until the
RUN/STOP LED lights up for the second time and remains lit (this takes three seconds). After
this, release the selector.
4. Within the next three seconds, switch the mode selector back to the MRES position, and
then back to STOP again.
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD
Maintenance
15.5 CPU reset to factory settings
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