Siemens SIMATIC S7-1500 Automation System User Manual

Commissioning
8.5 Memory reset
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
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8.5.1 Automatic memory reset
Possible cause of automatic memory reset
The CPU executes an automatic memory reset, if an error occurs that prevents normal
further processing.
Causes for such errors can be:
● User program is too large, and can't be completely loaded into work memory.
● The project data on the SIMATIC memory card are damaged, for example because a file
was deleted.
● If the SIMATIC memory card is removed during POWER OFF, and reinserted with a new
user program.
● When a SIMATIC memory card is removed or inserted while the CPU is switched on.
8.5.2 Manual memory reset
Reason for manual memory reset
Memory reset is required to reset the CPU to its "original state".
Options for performing memory reset on a CPU
There are three options for performing a memory reset on the CPU:
● Using the operating mode switch
● Using the display
● Using STEP 7

Siemens SIMATIC S7-1500 Automation System Specifications

General

Series	SIMATIC S7-1500
Programming	TIA Portal (Totally Integrated Automation Portal)
Protection Class	IP20
CPU	Various models available (e.g., CPU 1511-1 PN, CPU 1518-4 PN/DP)
Controller Type	Modular Controller
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Communication Interfaces	PROFINET, PROFIBUS, Ethernet, OPC UA
Digital Inputs	Varies by model and expansion modules
Digital Outputs	Varies by model and expansion modules
Analog Inputs	Varies by model and expansion modules
Analog Outputs	Varies by model and expansion modules
Backplane Bus	High-speed backplane bus for fast communication between modules
Redundancy	Supported with specific models and configurations
Safety	Integrated safety functions available
Scalability	Highly scalable with modular expansion
Operating Temperature	0°C to 60°C