Siemens SIMOTION Series User Manual

11.5.5 After a power failure/POWER FAIL
Case 1: SRAM saved
In the event of a power failure, the POWER FAIL detection feature integrated in the
SIMOTION P320‑4 will automatically cause the SIMOTION P firmware to save the user data
in the SRAM of the SIMOTION P320‑4. An SRAM image, however, cannot be created any
more in this case.
When the power supply returns or when the system is booted again, the data is available again.
Now SIMOTION P320-4 is immediately ready to run again.
Note
Backup of the user data in the SRAM of the SIMOTION P320‑4 in case of power failure is only
guaranteed if the SIMOTION P320‑4 is operated within its defined specifications.
Case 2: SRAM not saved
If the hardware of the SIMOTION P320-4 was operated outside of the defined specifications,
the user data might not have been backed up in the SRAM of the SIMOTION P320-4 under
certain circumstances.
Service and maintenance
11.5 Special power-up situations
SIMOTION P320-4 E / P320-4 S
192 Commissioning and Hardware Installation Manual, 11/2016

Siemens SIMOTION Series Specifications

General

Brand	Siemens
Model	SIMOTION Series
Category	Controller
Language	English